{"id":3541,"date":"2026-07-03T06:34:57","date_gmt":"2026-07-03T06:34:57","guid":{"rendered":"https:\/\/china-timing-pulley.xyz\/?post_type=product&p=3541"},"modified":"2026-07-03T06:34:57","modified_gmt":"2026-07-03T06:34:57","slug":"ep-h150-12-7mm-steel-cast-iron-straight-bore-timing-pulley","status":"publish","type":"product","link":"https:\/\/china-timing-pulley.xyz\/id\/produk\/ep-h150-12-7mm-steel-cast-iron-straight-bore-timing-pulley\/","title":{"rendered":"EP-H150 12.7MM Steel & Cast Iron Straight Bore Timing Pulley"},"content":{"rendered":"
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EP-H150 12.7MM Steel & Cast Iron Straight Bore Timing Pulley<\/h2>\n

H Pitch Mid-Width Straight Bore Timing Belt Pulley \u2014 F = 46 mm, Steel 14\u201352 Teeth, Cast Iron 58\u2013156 Teeth, Global Supply<\/p>\n

H Pitch: 12.700 mm \u00a0|\u00a0 Face Width F: 46 mm \u00a0|\u00a0 Material: Steel \/ Cast Iron \u00a0|\u00a0 Type: 6F \/ 6WF \/ 6W \/ 6A<\/div>\n<\/div>\n
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1. H 150 (12.700 mm) \u2014 Full Dimensional Specification Table<\/h2>\n

All dimensions in millimeters. Dp = Pitch Diameter; De = Outside Diameter; Df = Flange Diameter; Dm = Body Diameter; Di = Inner Diameter; F = Face Width (46 mm throughout); L = Hub Length; d = Bore Reference. Material: STEEL for 14\u201352 teeth; CAST IRON for 58\u2013156 teeth. Each straight bore timing pulley in this table is dimensioned per ANSI\/RMA IP-24. Dash (\u2014) indicates the dimension is not applicable for that structural type.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Part Code<\/th>\nTeeth<\/th>\nType<\/th>\nMaterial<\/th>\nDp<\/th>\nDe<\/th>\nDf<\/th>\nDm<\/th>\nDi<\/th>\nF<\/th>\nL<\/th>\nd<\/th>\nFlange No.<\/th>\n<\/tr>\n<\/thead>\n
14 H 150<\/td>\n14<\/td>\n6F<\/td>\nSTEEL<\/td>\n56.60<\/td>\n55.22<\/td>\n64<\/td>\n40<\/td>\n\u2014<\/td>\n46<\/td>\n58<\/td>\n11<\/td>\n59<\/td>\n<\/tr>\n
15 H 150<\/td>\n15<\/td>\n6F<\/td>\nSTEEL<\/td>\n60.64<\/td>\n59.27<\/td>\n66.5<\/td>\n45<\/td>\n\u2014<\/td>\n46<\/td>\n58<\/td>\n11<\/td>\n60<\/td>\n<\/tr>\n
16 H 150<\/td>\n16<\/td>\n6F<\/td>\nSTEEL<\/td>\n64.68<\/td>\n63.31<\/td>\n70<\/td>\n45<\/td>\n\u2014<\/td>\n46<\/td>\n58<\/td>\n11<\/td>\n61<\/td>\n<\/tr>\n
17 H 150<\/td>\n17<\/td>\n6F<\/td>\nSTEEL<\/td>\n68.72<\/td>\n67.35<\/td>\n75<\/td>\n45<\/td>\n\u2014<\/td>\n46<\/td>\n58<\/td>\n11<\/td>\n62<\/td>\n<\/tr>\n
18 H 150<\/td>\n18<\/td>\n6F<\/td>\nSTEEL<\/td>\n72.77<\/td>\n71.39<\/td>\n79<\/td>\n55<\/td>\n\u2014<\/td>\n46<\/td>\n58<\/td>\n14<\/td>\n63<\/td>\n<\/tr>\n
20 H 150<\/td>\n20<\/td>\n6F<\/td>\nSTEEL<\/td>\n80.85<\/td>\n79.48<\/td>\n87<\/td>\n62<\/td>\n\u2014<\/td>\n46<\/td>\n58<\/td>\n14<\/td>\n76<\/td>\n<\/tr>\n
22 H 150<\/td>\n22<\/td>\n6F<\/td>\nSTEEL<\/td>\n88.94<\/td>\n87.56<\/td>\n94<\/td>\n68<\/td>\n\u2014<\/td>\n46<\/td>\n58<\/td>\n14<\/td>\n67<\/td>\n<\/tr>\n
24 H 150<\/td>\n24<\/td>\n6F<\/td>\nSTEEL<\/td>\n97.02<\/td>\n95.65<\/td>\n102<\/td>\n72<\/td>\n\u2014<\/td>\n46<\/td>\n58<\/td>\n14<\/td>\n70<\/td>\n<\/tr>\n
26 H 150<\/td>\n26<\/td>\n6F<\/td>\nSTEEL<\/td>\n105.11<\/td>\n103.73<\/td>\n112<\/td>\n80<\/td>\n\u2014<\/td>\n46<\/td>\n58<\/td>\n14<\/td>\n72<\/td>\n<\/tr>\n
28 H 150<\/td>\n28<\/td>\n6F<\/td>\nSTEEL<\/td>\n113.19<\/td>\n111.82<\/td>\n120<\/td>\n80<\/td>\n\u2014<\/td>\n46<\/td>\n58<\/td>\n14<\/td>\n75<\/td>\n<\/tr>\n
30 H 150<\/td>\n30<\/td>\n6F<\/td>\nSTEEL<\/td>\n121.28<\/td>\n119.90<\/td>\n128<\/td>\n80<\/td>\n\u2014<\/td>\n46<\/td>\n58<\/td>\n14<\/td>\n78<\/td>\n<\/tr>\n
32 H 150<\/td>\n32<\/td>\n6F<\/td>\nSTEEL<\/td>\n129.36<\/td>\n127.99<\/td>\n135<\/td>\n80<\/td>\n\u2014<\/td>\n46<\/td>\n58<\/td>\n14<\/td>\n80<\/td>\n<\/tr>\n
35 H 150<\/td>\n35<\/td>\n6F<\/td>\nSTEEL<\/td>\n141.49<\/td>\n140.12<\/td>\n150<\/td>\n80<\/td>\n\u2014<\/td>\n46<\/td>\n58<\/td>\n14<\/td>\n85<\/td>\n<\/tr>\n
36 H 150<\/td>\n36<\/td>\n6WF<\/td>\nSTEEL<\/td>\n145.53<\/td>\n144.16<\/td>\n150<\/td>\n80<\/td>\n118<\/td>\n46<\/td>\n58<\/td>\n14<\/td>\n85<\/td>\n<\/tr>\n
40 H 150<\/td>\n40<\/td>\n6WF<\/td>\nSTEEL<\/td>\n161.70<\/td>\n160.33<\/td>\n168<\/td>\n80<\/td>\n134<\/td>\n46<\/td>\n58<\/td>\n14<\/td>\n90<\/td>\n<\/tr>\n
44 H 150<\/td>\n44<\/td>\n6WF<\/td>\nSTEEL<\/td>\n177.87<\/td>\n176.50<\/td>\n184<\/td>\n80<\/td>\n150<\/td>\n46<\/td>\n58<\/td>\n19<\/td>\n95<\/td>\n<\/tr>\n
48 H 150<\/td>\n48<\/td>\n6WF<\/td>\nSTEEL<\/td>\n194.04<\/td>\n192.67<\/td>\n200<\/td>\n90<\/td>\n166<\/td>\n46<\/td>\n58<\/td>\n19<\/td>\n100<\/td>\n<\/tr>\n
49 H 150<\/td>\n49<\/td>\n6W<\/td>\nSTEEL<\/td>\n198.08<\/td>\n196.71<\/td>\n\u2014<\/td>\n90<\/td>\n170<\/td>\n46<\/td>\n65<\/td>\n19<\/td>\n\u2014<\/td>\n<\/tr>\n
52 H 150<\/td>\n52<\/td>\n6W<\/td>\nSTEEL<\/td>\n210.21<\/td>\n208.84<\/td>\n\u2014<\/td>\n90<\/td>\n182<\/td>\n46<\/td>\n65<\/td>\n19<\/td>\n\u2014<\/td>\n<\/tr>\n
58 H 150<\/td>\n58<\/td>\n6A<\/td>\nCAST IRON<\/td>\n234.47<\/td>\n233.09<\/td>\n\u2014<\/td>\n90<\/td>\n207<\/td>\n46<\/td>\n65<\/td>\n19<\/td>\n\u2014<\/td>\n<\/tr>\n
60 H 150<\/td>\n60<\/td>\n6A<\/td>\nCAST IRON<\/td>\n242.55<\/td>\n241.18<\/td>\n\u2014<\/td>\n90<\/td>\n215<\/td>\n46<\/td>\n65<\/td>\n19<\/td>\n\u2014<\/td>\n<\/tr>\n
70 H 150<\/td>\n70<\/td>\n6A<\/td>\nCAST IRON<\/td>\n282.98<\/td>\n281.61<\/td>\n\u2014<\/td>\n100<\/td>\n255<\/td>\n46<\/td>\n65<\/td>\n24<\/td>\n\u2014<\/td>\n<\/tr>\n
84 H 150<\/td>\n84<\/td>\n6A<\/td>\nCAST IRON<\/td>\n339.57<\/td>\n338.20<\/td>\n\u2014<\/td>\n100<\/td>\n312<\/td>\n46<\/td>\n65<\/td>\n24<\/td>\n\u2014<\/td>\n<\/tr>\n
96 H 150<\/td>\n96<\/td>\n6A<\/td>\nCAST IRON<\/td>\n388.08<\/td>\n386.71<\/td>\n\u2014<\/td>\n120<\/td>\n360<\/td>\n46<\/td>\n65<\/td>\n24<\/td>\n\u2014<\/td>\n<\/tr>\n
120 H 150<\/td>\n120<\/td>\n6A<\/td>\nCAST IRON<\/td>\n485.10<\/td>\n483.73<\/td>\n\u2014<\/td>\n120<\/td>\n458<\/td>\n46<\/td>\n65<\/td>\n24<\/td>\n\u2014<\/td>\n<\/tr>\n
156 H 150<\/td>\n156<\/td>\n6A<\/td>\nCAST IRON<\/td>\n630.64<\/td>\n629.26<\/td>\n\u2014<\/td>\n120<\/td>\n603<\/td>\n46<\/td>\n65<\/td>\n24<\/td>\n\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Note: Full 43-part range available including all intermediate tooth counts \u2014 contact us for the complete H150 specification table. Bore diameter (d) reference indicates minimum standard bore; custom bore machining available on request.<\/p>\n

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2. About Our H150 Series \u2014 H Pitch, 1.5-Inch Face Width<\/h2>\n

The EP-H150 series is an intermediate face width H pitch straight bore timing pulley<\/strong>, positioned between the H100 (F = 31.8 mm) and H200 (F = 58.7 mm) in the H pitch product family. This straight bore timing pulley series fills the intermediate face width niche. The “150” suffix denotes the 1.500-inch (38.1 mm nominal) belt width class for which this pulley is designed, with an actual face width of F = 46 mm \u2014 wider than the belt to allow for normal belt tracking variation without belt overhang. This 46 mm face width gives the H150 straight bore timing pulley approximately 45% higher power capacity than the H100 at identical tooth count, pitch circle speed, and center distance, while remaining more compact than the H200 alternative for installations where space is limited and the H100’s power limit has been reached.<\/p>\n

The H150 straight bore timing pulley<\/strong> fills the engineering gap that designers frequently encounter when H100 capacity is slightly insufficient but H200 represents an excessive increase in belt width, hub length, and shaft loading for the application. Rather than over-engineering with the H200 series, this straight bore timing pulley achieves the required power capacity with the minimum additional drive width, hub length, and belt tension on the shaft \u2014 a meaningful consideration when shaft and bearing sizing in existing machines must not be increased, or when axial space is limited to the range between H100 and H200 hub lengths. The H150’s L = 58 mm hub length (for 14\u201348 teeth in steel) and L = 65 mm (for 49+ teeth) provide the intermediate engagement depth that this application scenario requires.<\/p>\n

Available in steel for tooth counts 14\u201352 and cast iron for 58\u2013156 teeth, this straight bore timing pulley covers pitch diameters from 56.60 mm (14 teeth) through 630.64 mm (156 teeth) \u2014 the full H pitch diameter range. The structural type progression follows the same engineering logic as the H100 and H200: Type 6F (flanged solid disc) for 14\u201335 teeth, Type 6WF (wide web with flanges) for 36\u201348 teeth, Type 6W (wide web, no flanges) for 49\u201352 teeth, and Type 6A (arm-spoked cast iron) for 58\u2013156 teeth. This progression ensures the correct belt retention geometry, material efficiency, and structural weight optimization at each tooth count, consistent with timing belt pulley<\/strong> engineering standards applied across the full H pitch diameter range. Each straight bore timing pulley in this series is dimensioned to ANSI and ISO standards.<\/p>\n<\/div>\n

\"china-timing-pulley-products-EP-H150<\/p>\n

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3. Five Key Product Advantages<\/h2>\n
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\u25b6 Optimal Mid-Point Between H100 and H200 \u2014 No Over-Engineering<\/div>\n

The H150 straight bore timing pulley<\/strong> provides approximately 45% more power capacity than the H100 at the same tooth count and operating conditions, without the additional axial space, hub length, and shaft loading of the H200. This intermediate specification is particularly valuable when a machine’s shaft and bearing sizing was originally designed around H100 requirements and cannot economically be upgraded \u2014 the H150 straight bore timing pulley allows power increase to the required level without redesigning the shaft support system. Engineering teams in Mexico, Brazil, and Poland managing production capacity upgrades on existing machinery regularly find the H150 straight bore timing pulley the correct specification for this scenario.<\/p>\n<\/div>\n

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\u25b6 F = 46 mm Face Width \u2014 Compact Yet Substantially More Powerful<\/div>\n

At 46 mm face width, the H150 straight bore timing pulley is 14.2 mm wider than the H100 (31.8 mm) but 12.7 mm narrower than the H200 (58.7 mm). This compact increase in belt width adds meaningful power capacity in a dimension increment that requires no machine structure modification in most retrofit applications \u2014 the additional 14.2 mm can typically be accommodated within the shaft’s existing overhand clearance without repositioning bearings, guards, or adjacent components. For buyers searching for a size straight bore timing pulley<\/strong> that upgrades drive power without structural redesign, the H150 straight bore timing pulley represents the most space-efficient path forward from an H100 installation.<\/p>\n<\/div>\n

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\u25b6 Full ANSI H Pitch Compatibility \u2014 1.5-Inch Belt Global Availability<\/div>\n

The H150 straight bore timing pulley tooth form and pitch circle geometry conform to ANSI\/RMA IP-24 and ISO 5294, and the matching H150 belt (1.500-inch nominal width H pitch) is stocked globally. This straight bore timing pulley is distributed throughout North America, Europe, East Asia, and Oceania. The global stocking of H pitch belts in the 1.5-inch width class ensures that timing belt pulley replacement<\/strong> belts are accessible wherever the H150 drive system is deployed \u2014 reducing unplanned downtime risk at remote industrial locations in Canada, Australia, Russia, and across Southeast Asia. The belt designation for this pulley series is H150 (e.g., a belt specification such as 600H150 denotes 600 teeth, H pitch, 1.500-inch belt width).<\/p>\n<\/div>\n

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\u25b6 Hub Length L = 58\u201365 mm \u2014 Adequate Engagement Without Excessive Shaft Demand<\/div>\n

The H150 straight bore timing pulley hub lengths \u2014 L = 58 mm for 14\u201348 teeth in steel and L = 65 mm for 49\u2013156 teeth \u2014 sit between the H100 (45\u201360 mm) and H200 (70\u201375 mm) values, providing adequate bore-to-shaft contact length for the intermediate belt tension generated by the H150 belt width without the extended shaft overhang that H200 requires. This hub length is appropriate for the shaft diameter range covered by the H150’s bore specifications (d = 11\u201324 mm), keeping the hub wall thickness adequate for the keyway while maintaining the shaft journal length requirement of this straight bore timing pulley at a level that standard industrial shaft designs can accommodate without modification.<\/p>\n<\/div>\n

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\u25b6 Identical Pitch Circle to H100\/H200 \u2014 Speed Ratio Unchanged Across Series<\/div>\n

Because pitch circle diameter depends only on tooth count and pitch \u2014 not on face width \u2014 an H150 straight bore timing pulley at any given tooth count has the exact same Dp and De as the H100 and H200 at the same tooth count. Drive ratio and peripheral speed calculations performed for an H100 system remain valid when upgrading to H150: only the belt width designation changes in the straight bore timing pulley specification. This kinematic identity between the H pitch face-width series simplifies drive redesign documentation, allows speed ratio verification from the original H100 calculations, and eliminates the need to recalculate center distance or belt length when switching between H100, H150, and H200 within the same center distance.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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4. Working Principle: H150 Mid-Width Synchronous Belt Drive<\/h2>\n

The H150 timing belt pulley<\/strong>, which is a precision straight bore timing pulley, operates through the same synchronous engagement principle as all H pitch pulleys: the belt’s trapezoidal teeth mesh positively with the machined tooth spaces in the pulley rim, transmitting torque with zero slip and maintaining precise shaft speed ratio. At the H150 face width of 46 mm, the straight bore timing pulley belt contact area is intermediate between H100 and H200, and the resultant belt tension per millimeter of face width at any given transmitted power is correspondingly between the two. This moderate specific loading \u2014 neither as high as the H100 (which has the smallest area distributing the tension) nor as low as the H200 \u2014 places the H150 in the optimal operating region for the power range it is designed to serve, balancing belt life, bearing load, and shaft bending stress at a level suited to the medium-duty industrial drive applications where this straight bore timing pulley is most commonly specified.<\/p>\n

The synchronous nature of the drive \u2014 the fact that the input and output shaft positions maintain a fixed angular relationship determined by the tooth count ratio \u2014 is what distinguishes the H150 straight bore timing pulley<\/strong> system from V-belt and chain alternatives in applications where shaft synchronization matters. In a multi-station production line where several process stations must execute their motions at precisely the correct phase relationship, the H pitch synchronous drive provides the phase accuracy and repeatability that V-belt drives cannot guarantee over time as the belt stretches and the slack increases. The H150 belt’s moderate tension requirement also means that the H150 straight bore timing pulley system imposes lower radial loads on the shaft bearings than an H100 system running at its maximum capacity for the same transmitted power \u2014 the wider belt transmits the power at lower tension, reducing the bearing radial load \u2014 a practical advantage of the straight bore timing pulley configuration at this face width.<\/p>\n

In the cast iron Type 6A large-diameter H150 straight bore timing pulley models (58\u2013156 teeth), the torque travels from the bore through the hub, along the cast iron arms, and into the rim where the tooth engagement occurs. At the H150 face width, the rim depth of each straight bore timing pulley tooth root is sized to carry the full H150 belt tension with the fatigue safety factor required by the cast iron material’s tensile fatigue limit. The arm cross-sections are proportioned using the same structural engineering principles as the H100 and H200 6A straight bore timing pulley arms \u2014 bending stress check at the arm root under the hub-to-rim torque at rated belt tension \u2014 but the H150 arm sections are intermediate between the lighter H100 and the heavier H200 arm sections, reflecting the intermediate belt tension level of the H150 series.<\/p>\n<\/div>\n

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5. H Pitch Face Width Comparison: H100, H150, H200<\/h2>\n

The H150 straight bore timing pulley occupies the center position in the three-variant H pitch straight bore timing pulley family. Understanding the dimensional relationships between the three straight bore timing pulley variants helps engineers select the appropriate face width for any given application requirement.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nH100 (1-inch)<\/th>\nH150 (1.5-inch)<\/th>\nH200 (2-inch)<\/th>\n<\/tr>\n<\/thead>\n
Face Width F<\/td>\n31.8 mm<\/td>\n46 mm<\/td>\n58.7 mm<\/td>\n<\/tr>\n
Hub Length L (small TC)<\/td>\n45 mm<\/td>\n58 mm<\/td>\n70 mm<\/td>\n<\/tr>\n
Hub Length L (large TC)<\/td>\n50\u201360 mm<\/td>\n65 mm<\/td>\n75 mm<\/td>\n<\/tr>\n
Max Bore d (large TC)<\/td>\n19 mm<\/td>\n24 mm<\/td>\n28 mm<\/td>\n<\/tr>\n
Belt Width Designation<\/td>\nH100 (1.000 in)<\/td>\nH150 (1.500 in)<\/td>\nH200 (2.000 in)<\/td>\n<\/tr>\n
Relative Power Capacity<\/td>\n1.0\u00d7 (reference)<\/td>\n\u2248 1.45\u00d7<\/td>\n\u2248 1.85\u00d7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

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6. Materials: Steel and Cast Iron for the H150 Series<\/h2>\n

The H150 straight bore timing pulley<\/strong> follows the same material specification philosophy as the H100 and H200 series. Steel (medium-carbon 45C or alloy 40Cr) is used for tooth counts 14\u201352 where higher shaft speeds make steel’s better fatigue endurance and bore surface hardness relevant, while grey cast iron (HT200 class, HB 180\u2013220) is used for the larger 58\u2013156 tooth range where reduced rotating speed and the economic and damping advantages of cast iron predominate. At the H150 face width of 46 mm, the straight bore timing pulley material requirements are intermediate between H100 and H200: the belt tension per millimeter of face width is slightly lower than H100 (benefiting belt and tooth root fatigue life) but not as reduced as H200, keeping material stress levels within the standard specifications for this straight bore timing pulley material class.<\/p>\n

Steel H150 straight bore timing pulley products (14\u201352 teeth) are machined from bar or forging to the finished tooth form, bore, keyway, and hub geometry. The medium-carbon content (0.40\u20130.50% C) provides adequate strength for the tooth root and bore wall in the H150 configuration, and the 46 mm face width gives each tooth root a wider cross-section than the H100 configuration \u2014 contributing to improved fatigue margin at the tooth root of this straight bore timing pulley under H150 belt tension. The standard surface treatment for steel H150 pulleys is black oxide, with zinc plating or phosphate-plus-oil available for improved corrosion protection in humid or wash-down applications. Cast iron H150 straight bore timing pulley products in the 6A arm-spoked configuration use the same grey iron specification as the H100 and H200 large-diameter pulleys, with arm cross-sections proportioned for the H150 belt tension level rather than the lighter H100 or heavier H200 tension.<\/p>\n<\/div>\n

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Looking for a straight bore timing pulley for sale in the T series, or need a custom bore specification for your industrial drive?<\/p>\n

T Series Timing Pulley\u00a0<\/a><\/p>\n<\/div>\n

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7. Application Scenarios<\/h2>\n

The H150 straight bore timing pulley<\/strong> occupies the power and drive width range that sits between light-duty H100 applications and heavy-duty H200 requirements. Below are the primary industrial scenarios where this intermediate specification is the natural choice.<\/p>\n

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Medium-Duty Conveyor and Indexing Drives<\/div>\n

Medium-weight indexing conveyors, pallet transfer systems, and buffer conveyor drives in automotive assembly plants use the straight bore timing pulley, distribution warehouses, and manufacturing facilities across France, Italy, and Spain use H150 timing belt pulley<\/strong> systems when the conveyor load exceeds H100 capacity but the installation has limited axial clearance for the wider H200 straight bore timing pulley. The H150 straight bore timing pulley belt width accommodates load levels up to approximately 45% higher than H100 without requiring mechanical modifications to the existing drive shaft arrangements \u2014 making it the go-to upgrade option for conveyor system capacity increases in existing production facilities.<\/p>\n<\/div>\n

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Textile and Fabric Processing Equipment<\/div>\n

Weaving machines, knitting frame drives, and yarn processing equipment in the textile manufacturing sectors of India, Turkey, Bangladesh, and Vietnam use the H150 straight bore timing pulley in H pitch synchronous belt drives extensively. The H150 straight bore timing pulley series covers the power range of medium-format weaving machines where the H100 belt reaches its tension limit at sustained high-speed operation, but adding the H200 belt would exceed the bearing load limits of the original machine design. The consistent F = 46 mm face width across the full H150 straight bore timing pulley tooth count range simplifies the belt sourcing relationship for textile equipment maintenance teams that manage multiple machine types sharing this common belt width standard.<\/p>\n<\/div>\n

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Agricultural Machinery and Grain Handling<\/div>\n

Combine harvester threshing drum drives, grain auger main drives, and fodder processing equipment in agricultural machinery use the straight bore timing pulley across North America, Argentina, Ukraine, and Australia use H pitch timing belt drive pulley<\/strong> systems where the synchronous ratio must be maintained precisely to protect threshing drum speed-sensitive crop quality outcomes. The H150 straight bore timing pulley suits the moderate-to-high power range of medium-scale harvesting equipment where H100 belt life is unacceptably short under the sustained high-load operation of harvest season, but H200 width would require structural modification of the drive housing on established machine platforms. The H150 timing pulley and belt<\/strong> straight bore timing pulley combination provides the service life improvement that agricultural equipment manufacturers need without platform redesign.<\/p>\n<\/div>\n

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Pharmaceutical and Chemical Mixing Equipment<\/div>\n

Pharmaceutical mixing tanks, ribbon blenders, and chemical reactor agitator drives in production facilities use the H150 straight bore timing pulley across Switzerland, Germany, the United States, and India use H pitch synchronous belt drives at the reduction stage between the gear motor and the mixer shaft. The H150 straight bore timing pulley series covers the power range of medium-scale mixers where the H100 belt operates near its rated capacity and any belt slippage or tension loss creates unacceptable product quality variation. Pharmaceutical mixing drives require zero-slip synchronous behavior to maintain shaft speed accuracy within the product specification tolerances, and the H150 straight bore timing pulley’s increased power margin over H100 provides the headroom needed to absorb transient mixing resistance spikes without belt ratcheting risk.<\/p>\n<\/div>\n

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Cement and Building Materials Processing<\/div>\n

Cement mixer drum drives, tile press main drives, and aggregate screening plant drives across Brazil, Mexico, Turkey, and Egypt use the straight bore timing pulley use H pitch timing belt drives at positions where precise speed ratio between the drive motor and the process machine determines product quality \u2014 mortar mixing consistency, tile thickness uniformity, or screen deck frequency accuracy. The H150 straight bore timing pulley<\/strong> in cast iron (60\u2013120 teeth) appears at the slow-speed large-diameter driven shaft positions in these applications, where the combination of high tooth count (large ratio in a single stage) and the intermediate belt width (H150) provides the straight bore timing pulley power capacity for medium-scale production equipment without requiring the large H200 belt width that heavier industrial installations use.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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8. Standards Compliance and Global Regulatory Framework<\/h2>\n
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ANSI\/RMA IP-24 \u2014 USA \/ Americas<\/div>\n

The H150 straight bore timing pulley<\/strong> conforms to ANSI\/RMA IP-24 H pitch tooth form specifications. The H150 belt designation (1.500-inch face width) follows the ANSI belt width naming convention and is stocked by industrial distributors throughout North America and Latin America. China timing pulley<\/strong> products produced to IP-24 H pitch standards as a straight bore timing pulley are dimensionally interchangeable with ANSI-compliant belts from any manufacturer in the Americas \u2014 ensuring that replacement belts for H150-equipped machines are available locally in the United States, Canada, Mexico, Brazil, and Argentina without special import arrangements.<\/p>\n<\/div>\n

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ISO 5294 \/ ISO 5296 \u2014 Europe and International<\/div>\n

ISO 5294 and ISO 5296 H pitch dimensional requirements align with ANSI\/RMA IP-24 for the H pitch family, providing the international standards framework for H150 series procurement across European, Asian, and Oceanian markets. European machine builders in Germany, France, Italy, and the Netherlands who reference ISO 5294 in their mechanical design specifications can source the H150 straight bore timing pulley with confidence that the ANSI and ISO H pitch tooth form specifications are equivalent at this pitch. ISO compliance documentation is available with qualifying straight bore timing pulley orders for CE marking technical file requirements.<\/p>\n<\/div>\n

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EU Machinery Directive 2006\/42\/EC and Food Contact Regulation<\/div>\n

Drive components including the H150 straight bore timing pulley installed in CE-marked machinery for EU markets must be selected with appropriate design safety factors. For food processing applications specifically, the H150 belt in food-grade neoprene or polyurethane must comply with EU Regulation (EC) No 1935\/2004 on materials in contact with food. The H150 straight bore timing pulley itself \u2014 in steel or cast iron \u2014 does not contact the food product and is not subject to food contact regulation, but the belt material must be specified to comply with the applicable food contact regulation in the target market (FDA 21 CFR for the USA, EC 1935\/2004 for the EU).<\/p>\n<\/div>\n

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India \u2014 BIS Standards for Power Transmission<\/div>\n

The Bureau of Indian Standards (BIS) publishes IS standards for power transmission components including synchronous belt pulleys, generally aligned with ISO specifications. For Indian buyers procuring H150 straight bore timing pulleys<\/strong> for textile machinery, pharmaceutical equipment, and agricultural processing machines \u2014 major Indian industrial applications for H pitch drives \u2014 ISO 5294 compliance documentation satisfies BIS-aligned procurement specifications. Our technical data pack includes the dimensional data, material specifications, and quality system certification applicable to Indian industrial procurement of a straight bore timing pulley.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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9. Compatible System Products<\/h2>\n

A complete H150 synchronous drive system requires matched timing belts and pulleys<\/strong> and may benefit from compatible drive accessories. We supply matched products for complete drive system procurement.<\/p>\n

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V-Belt Pulleys<\/div>\n

In many medium-duty industrial drives, a V-belt primary stage handles the initial power transmission from the motor while the H150 synchronous stage provides the accurate speed ratio to the process. Our V-belt pulley<\/a> range in cast iron and steel \u2014 SPZ, SPA, SPB, SPC, A, B, C section groove profiles \u2014 covers the primary drive stage counterpart for H150 straight bore timing pulley synchronous secondary drives. Standard bore and keyway dimensions across the straight bore timing pulley and V-belt pulley families align with the standard shaft diameter progression in industrial drive engineering, simplifying shaft selection and hub dimensioning for combined V-belt and H150 timing drive systems in medium-duty industrial equipment.<\/p>\n

\"V-belt<\/div>\n<\/div>\n
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Metric Pitch Standard Toothed Bars<\/div>\n

Metric Pitch Standard Toothed Bars complement the H150 timing belt pulley<\/strong> in linear drive applications where a rotary-to-linear motion conversion stage follows the H150 reduction drive. Toothed bars meshing with the same H pitch belt engaged on the H150 pulley allow the belt to travel along a fixed rack, producing linear movement of a carriage or driven element \u2014 a common architecture in long-travel gantry systems, industrial automation, and large-format CNC router tables where the H150 belt drive provides the power level and the toothed bar provides the linear motion. Our toothed bar range covers the H pitch specification to match H150 drive systems requiring this combined rotary-and-linear capability.<\/p>\n

\"Metric<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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10. About Us<\/h2>\n

We are a specialized timing pulley manufacturer<\/strong> with production capabilities spanning the complete range of synchronous belt drive pulleys including MXL, XL, L, H (H100\/H150\/H200\/H300), XH, XXH, T-series (T2.5, T5, T10), AT-series (AT5, AT10), and HTD series (HTD 3M, HTD 5M, HTD 8M) \u2014 in materials from 6061-T6 aluminum through medium-carbon steel and grey cast iron, across the full tooth count range from the smallest precision instrument pulleys through the largest heavy industrial cast iron 6A arm-spoked pulleys at 630 mm pitch diameter. Our H150 straight bore timing pulley series production capability covers the full 14\u2013156 tooth range in both steel and cast iron, with CNC-finished tooth profiles, bores, keyways, and hub faces dimensioned to ANSI\/RMA IP-24 and ISO 5294 tolerances.<\/p>\n

We maintain timing pulley stock<\/strong> of the most frequently ordered H150 configurations \u2014 steel tooth counts 20, 24, 28, 30, 32 (6F) and 36, 40, 44, 48 (6WF), plus cast iron 60, 70, 84, 96 (6A) \u2014 for immediate delivery to buyers globally. Custom timing belt pulleys<\/strong> in the H150 straight bore timing pulley series with non-standard bore diameters, modified hub lengths, special keyway specifications, or precision balance requirements are manufactured to order with 10\u201320 business day lead times. Our engineering team provides drive selection support for straight bore timing pulley applications including H150 power capacity calculation, service factor determination, and center distance optimization for buyers designing new equipment or upgrading existing drives from H100 to H150 specifications.<\/p>\n

WorkShop<\/h3>\n
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Frequently Asked Questions<\/h2>\n
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\nQ1. What is an H150 straight bore timing pulley and when should I choose it over H100 or H200 for an industrial drive upgrade in the United Kingdom?<\/summary>\n
An H150 straight bore timing pulley uses the ANSI H pitch (12.700 mm) tooth form with a face width of F = 46 mm and hub length L = 58\u201365 mm, positioned between the H100 (F = 31.8 mm) and H200 (F = 58.7 mm) in power capacity. Choose the H150 straight bore timing pulley for a UK industrial drive upgrade when the H100 belt reaches its capacity limit but adding the H200 width would require shaft or bearing redesign that is too costly, or when axial space constrains the hub length to between 58 and 65 mm. The H150 straight bore timing pulley provides approximately 45% more power than H100 in the same pitch circle geometry, which covers the most common medium-duty power gap that arises when production rates increase on existing machinery.<\/div>\n<\/details>\n<\/div>\n
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\nQ2. How do I find a straight bore timing pulley nearby in the H150 series for immediate replacement on a textile machine drive in India?<\/summary>\n
For immediate H150 straight bore timing pulley replacement on a textile machine drive in India, first confirm the part code from the existing pulley (e.g., “28 H 150”) and bore diameter. Common tooth counts (24, 28, 30, 32 in steel, and 60, 70, 84 in cast iron) are typically held by industrial drive component distributors in Mumbai, Surat, Ahmedabad, and Coimbatore \u2014 centers serving the Indian textile machinery market. If your required straight bore timing pulley tooth count is not immediately available locally, we can ship express freight with delivery to major Indian industrial centers within 5\u20137 business days for standard stock configurations. Provide the part code and bore diameter for our fastest response to your sourcing inquiry.<\/div>\n<\/details>\n<\/div>\n
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\nQ3. What size straight bore timing pulley should I select in the H150 series to achieve a 5:1 speed reduction on a conveyor drive in France?<\/summary>\n
For a 5:1 speed reduction in an H150 straight bore timing pulley conveyor drive in France, the tooth count ratio must equal 5:1. Select a 20-tooth steel driving pulley (20 H 150, Dp 80.85 mm) and a 100-tooth driven pulley \u2014 but 100 H 150 is not a listed standard tooth count; the nearest are 96 H 150 (cast iron, ratio 4.8:1) or 106 H 150 (cast iron, approximately 5.3:1). For an exact 5:1 ratio, use 20-tooth driver and 100-tooth driven, which we can produce as a non-standard cast iron tooth count. Alternatively, use 16-tooth driver and 80-tooth driven (both listed standard tooth counts) for a 5:1 ratio. Contact our engineering team with your motor power and shaft speed for a full straight bore timing pulley drive power capacity check and belt designation specification.<\/div>\n<\/details>\n<\/div>\n
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\nQ4. What are the timing belt pulley types available in the H150 series and how does the bore reference dimension d progress across the tooth count range?<\/summary>\n
The H150 straight bore timing pulley series uses four structural types: Type 6F (solid disc, flanged both sides) for 14\u201335 teeth; Type 6WF (wide web with flanges) for 36\u201348 teeth; Type 6W (wide web, no flanges) for 49\u201352 teeth; and Type 6A (arm-spoked, no flanges) for 58\u2013156 teeth in cast iron. The bore reference dimension d progresses as follows: d = 11 mm for 14\u201317 teeth; d = 14 mm for 18\u201335 teeth in 6F, and 14 mm for 36\u201341 teeth in 6WF; d = 19 mm for 42\u201352 teeth (6WF and 6W) and for 58\u201360 teeth (6A); and d = 24 mm for 70\u2013156 teeth in 6A. This progression reflects the increasing minimum bore size that the wider straight bore timing pulley hub wall can accommodate at each tooth count range without undercutting the hub wall minimum thickness at the keyway depth.<\/div>\n<\/details>\n<\/div>\n
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\nQ5. What is the timing belt idler pulley function in an H150 drive, and when is it needed on a pharmaceutical mixer drive in Switzerland?<\/summary>\n
A timing belt idler pulley in an H150 straight bore timing pulley drive maintains belt tension or increases wrap angle around a small driving pulley when the standard installation geometry results in inadequate wrap angle (below 90 degrees). In a pharmaceutical mixer drive in Switzerland, an idler is needed when: a high drive ratio (e.g., 6:1 or greater) is used with a small driving tooth count and constrained center distance; or when the belt must deviate from a straight path between the two main pulleys to avoid structural obstacles in the mixer frame. The idler \u2014 either plain or toothed \u2014 is positioned on the slack belt span. For pharmaceutical applications subject to EU GMP hygiene requirements, the idler design must accommodate cleaning access and must not create hard-to-clean crevices near the product zone.<\/div>\n<\/details>\n<\/div>\n
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\nQ6. How does the H150 straight bore timing pulley hub length of 58\u201365 mm affect the shaft overhang calculation for a cement mixing plant drive in Turkey?<\/summary>\n
The H150 straight bore timing pulley hub length L = 58 mm (for 14\u201348 teeth) and L = 65 mm (for 49+ teeth) determines the shaft journal length required beyond the outboard bearing to support the pulley hub. This shaft overhang creates a bending moment at the bearing from the belt tension radial load. For a Turkish cement mixing plant drive with, for example, a 30-tooth steel H150 pulley (L = 58 mm) on a 60 mm nominal diameter shaft, the overhang is approximately 58 mm plus any spacer. At the H150 belt tension for the rated drive power, the bearing bending moment from this overhang must be within the bearing’s rated combined load capacity. Verify bearing selection against the calculated bending moment before finalizing the drive design; if the existing bearing is marginal, select the H100 straight bore timing pulley series to reduce belt tension and hub length within the existing bearing rating.<\/div>\n<\/details>\n<\/div>\n
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\nQ7. What custom timing pulleys can be produced in the H150 series for a non-standard bore or keyway required for a specific motor shaft in Mexico?<\/summary>\n
Custom H150 straight bore timing pulleys for non-standard bore or keyway requirements for Mexican motor shafts can be produced with any bore diameter up to the hub wall minimum thickness limit at the relevant tooth count, keyways to any standard (ANSI B17.1, DIN 6885, or JIS B 1301), modified hub length, or special face runout tolerance. Standard tooth counts can be custom-bored within our standard production process, adding 5\u201310 business days to the standard lead time. Non-standard tooth counts require planning but are achievable. Provide your required straight bore timing pulley tooth count, bore diameter with tolerance (H7 or H8 recommended for keyed shaft fits), keyway dimensions, hub length, and annual quantity for a custom quotation including dimensional drawing for approval before production.<\/div>\n<\/details>\n<\/div>\n
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\nQ8. What is the correct timing belt replacement procedure for an H150 belt on an agricultural harvester drive in Ukraine, and what belt specification should I order?<\/summary>\n
To replace an H150 belt on a straight bore timing pulley-equipped Ukrainian agricultural harvester drive: first de-energize and lock out the drive. Measure the belt tooth count by wrapping a tape measure around the inner circumference and dividing by the H pitch (12.700 mm) to get the tooth count, or count directly. The belt specification follows ANSI naming: for example, 450H150 means 450 teeth, H pitch, 1.500-inch belt width. With the belt specification confirmed, release the tensioner or motor adjustment, slide off the old belt, and replace with the new belt confirming it seats fully in the pulley tooth spaces before re-tensioning to the recommended deflection. In Ukraine, H pitch belts for the straight bore timing pulley are available from industrial drive component distributors in Kyiv, Kharkiv, and Dnipro serving the agricultural machinery maintenance market.<\/div>\n<\/details>\n<\/div>\n
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\nQ9. How does the H150 timing belt drive pulley compare to a chain drive for medium-duty industrial conveyor applications in Canada?<\/summary>\n
The H150 straight bore timing pulley system compares favorably to a chain drive for medium-duty industrial conveyor applications in Canada in several important areas: zero maintenance lubrication (the H belt requires no lubricant, unlike chain which requires regular oiling or grease); cleaner operation (important in food processing and pharmaceutical facilities where chain lubricant contamination is a hazard); lower noise (the mesh between belt teeth and pulley is significantly quieter than roller chain on sprockets); and no elongation-induced ratio change (H belts on a straight bore timing pulley elongate microscopically from tensile loading without pitch change, unlike chain which elongates significantly through wear and must be replaced before pitch error exceeds the sprocket’s compensation capability). Chain is preferable only when the drive power exceeds H150 capacity at the available belt width or when extremely high shock load would cause belt ratcheting before the torque limiter activates.<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/div>\n

Editor: PXY<\/p>","protected":false},"excerpt":{"rendered":"

The EP-H150 12.7mm Steel & Cast Iron Timing Pulleys are designed for high-torque applications with a 12.7mm pitch. Available in tooth counts from 14 to 156, they are manufactured from durable Steel (types 6F, 6WF, 6W) or Cast Iron (type 6A). A key feature is the extra-wide face width (F) of 46mm, providing superior belt support compared to standard H-series pulleys. Smaller models (14\u201336 teeth) have a length (L) of 58mm, while larger sizes extend to 65mm. Bore diameters (Dm) range from 40mm to 120mm, accommodating heavy-duty shafts. With outer diameters (De) spanning 55.22mm to 629.26mm, the H150 series ensures robust, precise power transmission for demanding industrial machinery requiring wider belt drives.<\/p>","protected":false},"featured_media":3543,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[1051],"product_tag":[],"class_list":["post-3541","product","type-product","status-publish","has-post-thumbnail","product_cat-straight-bore-timing-pulley-mxl-xl-l-h","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/china-timing-pulley.xyz\/id\/wp-json\/wp\/v2\/product\/3541","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/china-timing-pulley.xyz\/id\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/china-timing-pulley.xyz\/id\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/china-timing-pulley.xyz\/id\/wp-json\/wp\/v2\/comments?post=3541"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/china-timing-pulley.xyz\/id\/wp-json\/wp\/v2\/media\/3543"}],"wp:attachment":[{"href":"https:\/\/china-timing-pulley.xyz\/id\/wp-json\/wp\/v2\/media?parent=3541"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/china-timing-pulley.xyz\/id\/wp-json\/wp\/v2\/product_brand?post=3541"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/china-timing-pulley.xyz\/id\/wp-json\/wp\/v2\/product_cat?post=3541"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/china-timing-pulley.xyz\/id\/wp-json\/wp\/v2\/product_tag?post=3541"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}