{"id":3500,"date":"2026-07-02T06:57:37","date_gmt":"2026-07-02T06:57:37","guid":{"rendered":"https:\/\/china-timing-pulley.xyz\/?post_type=product&p=3500"},"modified":"2026-07-02T07:04:19","modified_gmt":"2026-07-02T07:04:19","slug":"ep-l100-9-525mm-steel-cast-iron-straight-bore-timing-pulley","status":"publish","type":"product","link":"https:\/\/china-timing-pulley.xyz\/ru\/product\/ep-l100-9-525mm-steel-cast-iron-straight-bore-timing-pulley\/","title":{"rendered":"EP-L100 9,525-\u043c\u043c \u0441\u0442\u0430\u043b\u044c\u043d\u043e\u0439 \u0438 \u0447\u0443\u0433\u0443\u043d\u043d\u044b\u0439 \u043f\u0440\u044f\u043c\u043e\u0439 \u0437\u0443\u0431\u0447\u0430\u0442\u044b\u0439 \u0448\u043a\u0438\u0432 \u0413\u0420\u041c"},"content":{"rendered":"
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Timing Pulley Series | straight bore timing pulley nearby<\/p>\n

EP-L100 9.525MM Steel & Cast Iron
\nStraight Bore Timing Pulley | Timing Belt Pulley<\/h2>\n

A precision-machined straight bore timing pulley<\/strong> in the L Series (9.525 mm pitch), available in Steel and Cast Iron, covering 10 to 120 teeth. Designed for synchronized belt drives in automation, packaging, conveying, and power transmission applications worldwide.<\/p>\n<\/div>\n

Series:<\/span> L100 | Pitch: 9.525 mm | Material: Steel \/ Cast Iron | Teeth Range: 10\u2013120 | Type: 6F \/ 6WF \/ 6W \/ 6A<\/span><\/div>\n<\/div>\n
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1. Technical Specifications \u2014 L100 Series (9.525 mm Pitch) \u041f\u0440\u044f\u043c\u043e\u0442\u043e\u0447\u043d\u044b\u0439 \u0448\u043a\u0438\u0432 \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u0438\u0437\u0430\u0446\u0438\u0438<\/strong><\/h2>\n

The table below contains the complete dimensional specifications for all standard models in the EP-L100 straight bore timing pulley<\/strong> series. Dimensions are in millimetres. Dp = Pitch Diameter, De = Outside Diameter, Df = Flange Diameter, Dm = Hub Diameter, Di = Inside Flange Diameter, F = Belt Width, L = Hub Width, d = Bore Diameter. This straight bore timing pulley<\/strong> is available for engineers searching for a straight bore timing pulley nearby<\/strong> with global stock and rapid dispatch capability.<\/p>\n

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Part Code<\/th>\nTeeth<\/th>\nType<\/th>\nMaterial<\/th>\nDp (mm)<\/th>\nDe (mm)<\/th>\nDf (mm)<\/th>\nDm (mm)<\/th>\nDi (mm)<\/th>\nF (mm)<\/th>\nL (mm)<\/th>\nd (mm)<\/th>\n<\/tr>\n<\/thead>\n
10 L 100<\/td>\n10<\/td>\n6F<\/td>\nSteel<\/td>\n30.32<\/td>\n29.56<\/td>\n37<\/td>\n20<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n8<\/td>\n<\/tr>\n
11 L 100<\/td>\n11<\/td>\n6F<\/td>\n33.35<\/td>\n32.59<\/td>\n37<\/td>\n22<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n8<\/td>\n<\/tr>\n
12 L 100<\/td>\n12<\/td>\n6F<\/td>\n36.38<\/td>\n35.62<\/td>\n43<\/td>\n24<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n8<\/td>\n<\/tr>\n
13 L 100<\/td>\n13<\/td>\n6F<\/td>\n39.41<\/td>\n38.65<\/td>\n44<\/td>\n28<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n8<\/td>\n<\/tr>\n
14 L 100<\/td>\n14<\/td>\n6F<\/td>\n42.45<\/td>\n41.68<\/td>\n48<\/td>\n28<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
15 L 100<\/td>\n15<\/td>\n6F<\/td>\n45.48<\/td>\n44.72<\/td>\n51<\/td>\n34<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
16 L 100<\/td>\n16<\/td>\n6F<\/td>\n48.51<\/td>\n47.75<\/td>\n54<\/td>\n36<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
17 L 100<\/td>\n17<\/td>\n6F<\/td>\n51.54<\/td>\n50.78<\/td>\n57<\/td>\n36<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
18 L 100<\/td>\n18<\/td>\n6F<\/td>\n54.57<\/td>\n53.81<\/td>\n60<\/td>\n40<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
19 L 100<\/td>\n19<\/td>\n6F<\/td>\n57.61<\/td>\n56.84<\/td>\n64<\/td>\n40<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
20 L 100<\/td>\n20<\/td>\n6F<\/td>\n60.64<\/td>\n59.88<\/td>\n66.5<\/td>\n40<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
21 L 100<\/td>\n21<\/td>\n6F<\/td>\n63.67<\/td>\n62.91<\/td>\n70<\/td>\n45<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
22 L 100<\/td>\n22<\/td>\n6F<\/td>\n66.70<\/td>\n65.94<\/td>\n75<\/td>\n45<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
23 L 100<\/td>\n23<\/td>\n6F<\/td>\n69.73<\/td>\n68.97<\/td>\n79<\/td>\n55<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
24 L 100<\/td>\n24<\/td>\n6F<\/td>\n72.77<\/td>\n72.00<\/td>\n79<\/td>\n55<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
25 L 100<\/td>\n25<\/td>\n6F<\/td>\n75.80<\/td>\n75.04<\/td>\n82.5<\/td>\n58<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
26 L 100<\/td>\n26<\/td>\n6F<\/td>\n78.83<\/td>\n78.07<\/td>\n86<\/td>\n58<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
27 L 100<\/td>\n27<\/td>\n6F<\/td>\n81.86<\/td>\n81.10<\/td>\n86<\/td>\n58<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
28 L 100<\/td>\n28<\/td>\n6F<\/td>\n84.89<\/td>\n84.13<\/td>\n91<\/td>\n58<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
29 L 100<\/td>\n29<\/td>\n6F<\/td>\n87.93<\/td>\n87.16<\/td>\n94<\/td>\n58<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
30 L 100<\/td>\n30<\/td>\n6F<\/td>\n90.96<\/td>\n90.20<\/td>\n97<\/td>\n70<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
32 L 100<\/td>\n32<\/td>\n6F<\/td>\n97.02<\/td>\n96.26<\/td>\n102<\/td>\n70<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
33 L 100<\/td>\n33<\/td>\n6F<\/td>\n100.05<\/td>\n99.29<\/td>\n106<\/td>\n70<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
34 L 100<\/td>\n34<\/td>\n6F<\/td>\n103.08<\/td>\n102.32<\/td>\n112<\/td>\n70<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
35 L 100<\/td>\n35<\/td>\n6F<\/td>\n106.12<\/td>\n105.35<\/td>\n112<\/td>\n70<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
36 L 100<\/td>\n36<\/td>\n6F<\/td>\n109.15<\/td>\n108.39<\/td>\n115<\/td>\n70<\/td>\n\u2013<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
40 L 100<\/td>\n40<\/td>\n6WF<\/td>\n121.28<\/td>\n120.51<\/td>\n128<\/td>\n70<\/td>\n100<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
41 L 100<\/td>\n41<\/td>\n6WF<\/td>\n124.31<\/td>\n123.55<\/td>\n135<\/td>\n70<\/td>\n103<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
42 L 100<\/td>\n42<\/td>\n6WF<\/td>\n127.34<\/td>\n126.58<\/td>\n135<\/td>\n70<\/td>\n106<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
44 L 100<\/td>\n44<\/td>\n6WF<\/td>\n133.40<\/td>\n132.64<\/td>\n142<\/td>\n70<\/td>\n112<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
45 L 100<\/td>\n45<\/td>\n6WF<\/td>\n136.44<\/td>\n135.67<\/td>\n142<\/td>\n70<\/td>\n115<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
47 L 100<\/td>\n47<\/td>\n6WF<\/td>\n142.50<\/td>\n141.74<\/td>\n150<\/td>\n70<\/td>\n121<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
48 L 100<\/td>\n48<\/td>\n6WF<\/td>\n145.53<\/td>\n144.77<\/td>\n150<\/td>\n70<\/td>\n124<\/td>\n31.8<\/td>\n45<\/td>\n11<\/td>\n<\/tr>\n
49 L 100<\/td>\n49<\/td>\n6W<\/td>\nCast Iron<\/td>\n148.56<\/td>\n147.80<\/td>\n\u2013<\/td>\n70<\/td>\n127<\/td>\n31.8<\/td>\n45<\/td>\n14<\/td>\n<\/tr>\n
50 L 100<\/td>\n50<\/td>\n6W<\/td>\n151.60<\/td>\n150.83<\/td>\n\u2013<\/td>\n70<\/td>\n130<\/td>\n31.8<\/td>\n45<\/td>\n14<\/td>\n<\/tr>\n
52 L 100<\/td>\n52<\/td>\n6W<\/td>\n157.66<\/td>\n156.90<\/td>\n\u2013<\/td>\n70<\/td>\n136<\/td>\n31.8<\/td>\n45<\/td>\n14<\/td>\n<\/tr>\n
56 L 100<\/td>\n56<\/td>\n6W<\/td>\n169.79<\/td>\n169.02<\/td>\n\u2013<\/td>\n70<\/td>\n149<\/td>\n31.8<\/td>\n45<\/td>\n14<\/td>\n<\/tr>\n
57 L 100<\/td>\n57<\/td>\n6W<\/td>\n172.82<\/td>\n172.06<\/td>\n\u2013<\/td>\n70<\/td>\n152<\/td>\n31.8<\/td>\n45<\/td>\n14<\/td>\n<\/tr>\n
60 L 100<\/td>\n60<\/td>\n6W<\/td>\n181.91<\/td>\n181.15<\/td>\n\u2013<\/td>\n75<\/td>\n160<\/td>\n31.8<\/td>\n50<\/td>\n14<\/td>\n<\/tr>\n
65 L 100<\/td>\n65<\/td>\n6A<\/td>\n197.07<\/td>\n196.31<\/td>\n\u2013<\/td>\n75<\/td>\n176<\/td>\n31.8<\/td>\n50<\/td>\n14<\/td>\n<\/tr>\n
66 L 100<\/td>\n66<\/td>\n6A<\/td>\n200.11<\/td>\n199.34<\/td>\n\u2013<\/td>\n75<\/td>\n179<\/td>\n31.8<\/td>\n50<\/td>\n14<\/td>\n<\/tr>\n
72 L 100<\/td>\n72<\/td>\n6A<\/td>\n218.30<\/td>\n217.53<\/td>\n\u2013<\/td>\n75<\/td>\n197<\/td>\n31.8<\/td>\n50<\/td>\n14<\/td>\n<\/tr>\n
84 L 100<\/td>\n84<\/td>\n6A<\/td>\n254.68<\/td>\n253.92<\/td>\n\u2013<\/td>\n75<\/td>\n233<\/td>\n31.8<\/td>\n50<\/td>\n14<\/td>\n<\/tr>\n
90 L 100<\/td>\n90<\/td>\n6A<\/td>\n272.87<\/td>\n272.11<\/td>\n\u2013<\/td>\n75<\/td>\n252<\/td>\n31.8<\/td>\n50<\/td>\n14<\/td>\n<\/tr>\n
96 L 100<\/td>\n96<\/td>\n6A<\/td>\n291.06<\/td>\n290.30<\/td>\n\u2013<\/td>\n75<\/td>\n269<\/td>\n31.8<\/td>\n50<\/td>\n14<\/td>\n<\/tr>\n
120 L 100<\/td>\n120<\/td>\n6A<\/td>\n363.83<\/td>\n363.07<\/td>\n\u2013<\/td>\n75<\/td>\n342<\/td>\n31.8<\/td>\n50<\/td>\n14<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

All dimensions in mm. F = belt width reference. L = hub length. Df applies to flanged types only. Di applies to wide-flanged types only. Flange Number (mating belt width code) omitted for brevity; refer to catalog for matching belt specification.<\/p>\n

\u041f\u0440\u044f\u043c\u043e\u0442\u043e\u0447\u043d\u044b\u0439 \u0448\u043a\u0438\u0432 \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u0438\u0437\u0430\u0446\u0438\u0438<\/a><\/p>\n<\/div>\n

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2. Five Key Product Advantages<\/h2>\n
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\u25b6 Broad Teeth Range in One Series<\/div>\n

With 10 to 120 tooth options under the same L100 part code structure, this L100 series allows engineers to specify the exact speed ratio they need without switching to a different pitch family. Whether the application demands a compact 10-tooth drive position for a servo-driven conveyor or a 120-tooth driven wheel for a low-speed indexing table, the L100 straight bore timing pulley delivers consistent pitch accuracy across the full range, simplifying design standardization and reducing spare parts inventory complexity in industrial facilities worldwide.<\/p>\n<\/div>\n

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\u25b6 Dual Material Options for Load Matching<\/div>\n

Steel construction (10 to 48 teeth) provides high tensile strength, excellent machinability for bore finishing, and reliable performance in dynamic, high-cycle drive applications. Cast Iron (49 to 120 teeth) delivers the damping characteristics and mass needed to stabilize larger-diameter straight bore timing pulley<\/strong> units against vibration-induced pitch error at the tooth-belt meshing point. Matching material to tooth count \u2014 and therefore to likely torque load \u2014 is standard engineering practice, and the L100 material split reflects this logic directly.<\/p>\n<\/div>\n

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\u25b6 Multiple Flange Configurations<\/div>\n

The L100 straight bore timing pulley<\/strong> series offers four distinct flange type codes \u2014 6F, 6WF, 6W, and 6A \u2014 each suited to different belt-tracking and housing-clearance requirements. A flanged straight bore timing pulley (6F, 6WF) keeps the L-pitch timing belt centered on the pulley face without requiring external belt guides, reducing lateral belt wander especially in open-frame machines. The unflanged straight bore timing pulley variants (6W, 6A) are preferred where a fixed guide rail or housing provides lateral constraint, or where the drive arrangement requires easy belt removal without dismantling the pulley from the shaft.<\/p>\n<\/div>\n

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\u25b6 Standard Pitch Compatibility<\/div>\n

The 9.525 mm pitch of the L Series is one of the most widely adopted standard timing belt pitches in global industrial machinery, recognized under both Imperial (L series) and interchangeable metric-inch standards. Timing belts and pulleys<\/strong> in the L100 series mate directly with L-profile belts from any major belt supplier conforming to ANSI\/RMA or equivalent standards, ensuring belt replacement is never dependent on a single supply source. This broad belt availability makes the L100 straight bore timing pulley<\/strong> the practical choice for global maintenance teams who need an interchangeable, stocked product.<\/p>\n<\/div>\n

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\u25b6 Clean Straight Bore for Custom Finishing<\/div>\n

Unlike taper lock or QD bushing variants, the straight bore timing pulley<\/strong> arrives with a pre-machined through-bore at standard size, which the end-user or their machine shop can ream, bore, or keyway-mill to the precise shaft fit required. This flexibility eliminates the need to specify a completed bore size at the time of order, reducing procurement lead time significantly and making the L100 straight bore timing pulley<\/strong> the preferred stocking SKU for distributors who serve multiple customer applications from a single inventory holding.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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3. Working Principle of the L100 Straight Bore Timing Pulley<\/h2>\n

A straight bore timing pulley<\/strong> in the L100 series transmits power through positive meshing engagement between the precision-machined trapezoidal teeth on the pulley face and the corresponding tooth profiles on the inner surface of an L-series timing belt. Unlike a V-pulley or flat belt pulley where power transfer depends on friction and belt tension, the timing belt drive relies entirely on tooth engagement, meaning there is no slip between pulley and belt. Every rotation of the drive straight bore timing pulley produces an exact, predictable rotation of the driven pulley \u2014 the defining characteristic of a synchronized belt drive system<\/strong>.<\/p>\n

At the heart of the L100 series is the 9.525 mm pitch. This pitch \u2014 the linear distance from the center of one tooth to the center of the next, measured along the pitch line of the belt \u2014 determines how many belt teeth engage per revolution and therefore governs the relationship between belt speed and pulley surface speed. The pitch diameter (Dp) of this straight bore timing pulley<\/strong> is calculated from the tooth count and pitch using the formula Dp = (N \u00d7 P) \/ \u03c0, where N is the number of teeth and P is the pitch (9.525 mm). The outside diameter (De) is always slightly smaller than the pitch diameter because the belt pitch line sits above the tooth root, not at the outermost surface of the pulley.<\/p>\n

When the drive motor rotates the input shaft, torque is transmitted through the interference fit or key connection between the shaft and the straight bore timing pulley bore. The straight bore timing pulley teeth pull the belt teeth forward on the drive side and the belt teeth engage the driven straight bore timing pulley teeth on the other end of the belt loop. Because L-pitch timing belts are made with glass fiber or Kevlar tension cords that resist elongation under load, the center distance between pulleys remains stable throughout operation, preventing the speed variation that would occur with an elastically stretching belt. This combination of tooth geometry and cord stiffness gives the straight bore timing pulley<\/strong> drive its defining zero-slip synchronous performance within the synchronized belt drive system<\/strong>.<\/p>\n<\/div>\n

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4. Material Composition \u2014 Steel and Cast Iron Straight Bore Timing Pulley<\/h2>\n

Material selection in the L100 straight bore timing pulley<\/strong> series is determined by the diameter and therefore the mass and torque requirements of the tooth count range. Smaller pulley units with compact pitch diameters operate at higher rotational speeds for a given belt speed, and the centrifugal and tooth-meshing forces are well within the capacity of steel without requiring the mass damping benefit of cast iron. Larger-diameter pulley variants running at lower rotational speeds carry higher torque loads and benefit from the inherent vibration absorption and surface hardness of cast iron, which reduces the tendency for chatter noise at the tooth-belt mesh point during direction reversals.<\/p>\n

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Steel (10\u201348 Teeth) Straight Bore Timing Pulley<\/h3>\n

Carbon steel with a tensile strength typically in the 500\u2013700 MPa range provides excellent machinability for precision tooth hobbing and bore finishing to tight tolerances on this straight bore timing pulley<\/strong>. The steel body is compatible with all standard keyway milling, bore reaming, and set-screw installation processes. Surface finishes may include black oxide, zinc phosphate, or clear lacquer depending on the operating environment. Steel straight bore timing pulley construction also makes these units suitable for applications requiring the timing pulley standard sizes to interface with stainless steel shafts via appropriate transition fits.<\/p>\n<\/div>\n

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Cast Iron (49\u2013120 Teeth) Straight Bore Timing Pulley<\/h3>\n

Grey cast iron (typically Grade 250 or equivalent) is used for the larger-tooth-count straight bore timing pulley<\/strong> variants. Cast iron’s graphite flake microstructure provides natural self-damping of vibration transmitted through the timing belt, and the higher density contributes to smoother running at the low rotational speeds typical of large-diameter straight bore timing pulley units. Cast iron is also inherently resistant to galling, making it a practical material for pulleys that must be disassembled and reinstalled on a shaft multiple times in field service situations \u2014 a consideration for users ordering metric timing belt pulleys<\/strong> for maintenance stock.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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5. Straight Bore Timing Pulley Selection Guide \u2014 L100 Series<\/h2>\n

Selecting the correct straight bore timing pulley<\/strong> from the L100 range begins with three parameters: tooth count for the required speed ratio, material based on torque load and duty cycle, and flange type based on the lateral belt guidance available in the machine design. Engineers who have previously specified metric timing belt pulleys<\/strong> in European machine designs should note that the L100 pitch (9.525 mm) is an inch-pitch standard rather than a metric-pitch standard \u2014 it is compatible with L-series belts from all major suppliers but does not interchange with T5 (5 mm pitch) or AT5 metric pulleys, which use a different tooth form geometry.<\/p>\n

For drive ratio calculation using this straight bore timing pulley<\/strong>: the speed ratio equals the tooth count of the driven straight bore timing pulley divided by the tooth count of the driving straight bore timing pulley. A 20-tooth driver paired with a 60-tooth driven straight bore timing pulley produces exactly 3:1 speed reduction. The pitch diameter for any straight bore timing pulley in the table can be used to calculate the minimum center distance and the required belt length using standard timing belt drive design formulas available from belt manufacturers. The uniform belt face width F = 31.8 mm across the full straight bore timing pulley range simplifies belt procurement: a single belt width (L 100 = 1-inch wide) covers every tooth count in the series.<\/p>\n

For buyers searching for a straight bore timing pulley nearby<\/strong> who need immediate stock rather than lead-time production, our standard L100 range from 14 to 36 teeth in steel and 50 to 72 teeth in cast iron is typically available for rapid dispatch. The custom timing belt pulleys<\/strong> capability covers non-standard bore diameters, hub length modifications, and special surface treatments for any straight bore timing pulley<\/strong> in the L100 series \u2014 providing flexibility for OEM applications that cannot use the pre-machined standard bore.<\/p>\n<\/div>\n

\"china-timing-pulley-products-EP-L100<\/p>\n

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6. Application Scenarios for the L100 Straight Bore Timing Pulley<\/h2>\n

The L100 straight bore timing pulley<\/strong> is deployed across a wide range of synchronized belt drive system<\/strong> applications globally. The following represent the most common deployment contexts for this straight bore timing pulley<\/strong> series.<\/p>\n

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Industrial Automation and CNC Machinery<\/h3>\n

CNC routers, laser cutters, and multi-axis automation systems require precise axis positioning that is repeatable to fractions of a millimetre. The zero-slip synchronous engagement of the L-series synchronized belt drive system<\/strong> \u2014 with the L100 straight bore timing pulley<\/strong> at its core \u2014 delivers the positional repeatability these systems require. The 9.525 mm pitch provides a good balance between compact drive dimensions and the tooth count needed for smooth multi-tooth engagement across the arc of contact on the drive pulley, reducing per-tooth load and extending belt service life in high-cycle automation environments.<\/p>\n<\/div>\n

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Packaging and Food Processing Lines<\/h3>\n

Packaging machinery relies on synchronized belt drives to coordinate the timing of film feeding, sealing jaw activation, and product indexing. Any slip between the drive and driven pulley positions translates directly into misaligned seal positions, film waste, or rejected product. The L100 straight bore timing pulley<\/strong> series is widely used in form-fill-seal machines, wrapping lines, and cartoning equipment across European and North American packaging plants. The straight bore configuration allows rapid integration into existing drive shafts during line changeovers without the removal of taper lock bushings, which reduces downtime.<\/p>\n<\/div>\n

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Conveyor and Material Handling Systems<\/h3>\n

Conveyor systems that handle products requiring precise timing \u2014 such as unit-load handling in distribution centers, product accumulation zones, or incline conveyors in mining and aggregate processing \u2014 use L-pitch timing belt drive systems where the position of the product must track exactly with the belt surface motion. The larger-bore Cast Iron straight bore timing pulley<\/strong> variants in the L100 series, with Di dimensions up to 342 mm on the 120-tooth model, suit the slow-speed, high-torque main drive applications found on heavy-duty conveyor head-drives in Australian mining operations and South American agricultural processing facilities.<\/p>\n<\/div>\n

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Printing and Paper Handling Machinery<\/h3>\n

Printing presses, die-cutting machines, and paper folding lines use timing belt drives extensively to coordinate multiple shafts that must remain in precise phase relationship throughout the print cycle. The L-series pitch straight bore timing pulley<\/strong> provides the repeatable synchronization between the impression cylinder, ink rollers, and paper feed mechanism that makes consistent print registration possible at high speeds. Printing machinery manufacturers in Germany, Japan, and the United States frequently specify L100 straight bore timing pulley<\/strong> units for drive axis designs in commercial and industrial printing equipment.<\/p>\n<\/div>\n

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Medical and Laboratory Equipment<\/h3>\n

Diagnostic imaging equipment, laboratory liquid handlers, and sample processing automation use small-bore steel straight bore timing pulley<\/strong> units in the 10 to 20 tooth range of the L100 series for the positioning axes of their scanning, pipetting, and sample transport mechanisms. The precision of the tooth geometry in a properly manufactured straight bore timing pulley<\/strong> ensures that the number of steps taken by a stepper motor or the encoder counts from a servo motor translate to precise linear displacement of the driven mechanism \u2014 a requirement for medical equipment accuracy under applicable regulatory frameworks such as FDA 21 CFR Part 820 in the United States and CE marking requirements in the European Union.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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6. Regulatory Compliance and Standards<\/h2>\n

Timing pulleys and their associated belt drive systems used in machinery sold or operated globally are subject to a range of industry standards and national regulations that govern dimensional tolerance, safety, and product documentation. Understanding the applicable framework is important for purchasing engineers specifying the L100 straight bore timing pulley<\/strong> for regulated applications.<\/p>\n

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ANSI\/RMA IP-24 \u2014 Inch Pitch Timing Belt Drives (USA)<\/strong><\/p>\n

The American National Standards Institute ANSI\/RMA IP-24 standard defines the dimensional specifications for L-series timing belts and pulleys, including tooth form geometry, pitch measurement, and belt width tolerances. L-pitch straight bore timing pulley units conforming to this standard are dimensionally interchangeable with belts from any manufacturer who also certifies conformance to ANSI\/RMA IP-24. This interchangeability is an important procurement advantage for buyers in North and South America managing replacement belt inventories for machines operating on L100 series straight bore timing pulley<\/strong> units.<\/p>\n<\/div>\n

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ISO 5295 \u2014 Synchronous Belt Drive Systems<\/strong><\/p>\n

ISO 5295 specifies dimensions and tolerances for synchronous belt drive systems, covering pulley groove geometry and belt tooth profile. Products designed to ISO 5295 are recognized across European and Asian markets, providing the dimensional basis for engineering calculations of drive capacity, belt life, and shaft loads. European machinery manufacturers purchasing metric timing belt pulleys<\/strong> or L-series straight bore timing pulley units for equipment destined for export should verify ISO 5295 conformance to ensure belt sourcing flexibility in destination markets.<\/p>\n<\/div>\n

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EU Machinery Directive 2006\/42\/EC<\/strong><\/p>\n

In the European Union, machinery incorporating timing belt drives must comply with the Machinery Directive. This requires that all power transmission components, including the straight bore timing pulley<\/strong>, be designed and installed so that belt or pulley failure does not create immediate hazard. Drive guards and belt tension monitoring provisions fall under this requirement. Suppliers of straight bore timing pulley units to European OEM machinery builders should provide appropriate documentation supporting CE marking, including material certificates and dimensional inspection records where specified in the customer’s supplier qualification requirements.<\/p>\n<\/div>\n

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GB\/T Standards \u2014 Chinese National Standards for Synchronous Pulleys<\/strong><\/p>\n

Chinese national standards under the GB\/T framework define tooth form geometry and material requirements for synchronous pulleys manufactured and sold in the Chinese domestic market. As a China timing pulley supplier producing L-series straight bore timing pulley<\/strong> products, our manufacturing process references applicable GB\/T standards for material grade selection, heat treatment, and dimensional tolerance inspection, ensuring that products meet both domestic and export market quality requirements without parallel production systems for different destinations.<\/p>\n<\/div>\n

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ICONTEC and NTC Standards \u2014 Colombia and Latin America<\/strong><\/p>\n

In Colombia and other Andean Community member states, power transmission components used in industrial machinery must comply with applicable ICONTEC NTC standards that align with ISO and ANSI references for belt drive systems. Buyers in Colombia, Peru, Chile, and Brazil sourcing L100 straight bore timing pulley<\/strong> units for locally manufactured automation and processing equipment should verify that the component’s dimensional standard (ANSI\/RMA or ISO) is recognized by the machine OEM’s design documentation to ensure compatibility compliance.<\/p>\n<\/div>\n

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FDA 21 CFR Part 820 \u2014 Medical Device Manufacturing (USA)<\/strong><\/p>\n

For custom timing belt pulleys<\/strong> used in FDA-regulated medical device manufacturing equipment \u2014 including the straight bore timing pulley<\/strong> in custom bore configurations \u2014 the supplier must be able to provide material traceability documentation, dimensional inspection records, and process control evidence consistent with the device manufacturer’s supplier qualification requirements under 21 CFR Part 820. Buyers specifying L100 steel straight bore timing pulley units for medical laboratory or diagnostic equipment drives should clarify documentation requirements at the point of inquiry to avoid supply delays during OEM equipment qualification.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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7. Related Products<\/h2>\n

A straight bore timing pulley<\/strong> performs as part of a complete synchronized belt drive system<\/strong>. The following complementary products ensure full system compatibility and support one-stop procurement for engineers and buyers specifying complete timing belt drive assemblies alongside the straight bore timing pulley<\/strong>.<\/p>\n

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Metric Pitch Standard Toothed Bars<\/h3>\n

\"Metric<\/p>\n

Metric Pitch Standard Toothed Bars are the linear-motion complement to rotary straight bore timing pulley units. When used together with the L100 straight bore timing pulley<\/strong> and a compatible timing belt, toothed bars create linear positioning drives that offer the same zero-slip synchronization as rotary timing belt drives \u2014 essential for CNC axis drives, conveyor indexing, and linear robot positioning systems. Our toothed bar series covers all major metric and inch pitches, including the L-pitch profile, for direct compatibility with L100 series pulleys and standard L-series belts.<\/p>\n<\/div>\n

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V-Pulley<\/a><\/h3>\n

\"V-Belt<\/p>\n

Our V-Pulley<\/a> range is designed for use alongside straight bore timing pulley drives in machines that combine synchronous and non-synchronous belt drive sections. V-belt pulleys are commonly used for motor input stages where slip tolerance is acceptable, with the straight bore timing pulley handling the precision positioning downstream. Sourcing both straight bore timing pulley<\/strong> units and V-pulleys from a single supplier ensures consistent manufacturing quality standards, simplified logistics, and a single technical contact for drive system design support, reducing procurement complexity for global engineering teams.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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8. About Us<\/h2>\n

We are a specialist manufacturer of precision straight bore timing pulley products and synchronized belt drive components, supplying the automation, packaging, food processing, conveying, printing, and medical equipment industries worldwide. Our L-series straight bore timing pulley<\/strong> range is manufactured under ISO 9001-certified quality management processes, with tooth form geometry held to ANSI\/RMA IP-24 and ISO 5295 tolerances. As an established China timing pulley manufacturer, we serve OEM machine builders, system integrators, and MRO distributors across North America, Europe, Southeast Asia, Australia, and Latin America. Our custom timing belt pulleys<\/strong> capability extends the standard L100 straight bore timing pulley<\/strong> range to non-standard bore diameters, modified hub lengths, and special corrosion protection treatments, addressing the requirements of buyers who cannot use the standard pre-machined bore on their specific machine shaft specification.<\/p>\n

Workshop<\/h3>\n
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\"Straight
\n\"Straight
\n\"Timing
\n\"Straight<\/div>\n<\/div>\n<\/div>\n
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Frequently Asked Questions<\/h2>\n

Common questions from engineers, procurement managers, and distributors worldwide about the L100 straight bore timing pulley<\/strong> and related timing belt drive systems.<\/p>\n

\nQ1. What is a straight bore timing pulley and how does it differ from a taper lock or QD bushing type in an industrial drive application?<\/summary>\n
A1. A straight bore timing pulley<\/strong> has a parallel cylindrical bore machined through the hub, which slides onto the drive shaft and is secured by a key and setscrew or a press fit. Unlike a taper lock pulley, which uses a tapered bushing system to grip the shaft by wedge action, the straight bore timing pulley design requires the bore to be machined or reamed to the exact shaft diameter at installation. For stock distributors and OEM buyers who need flexibility to finish the bore to different shaft sizes from a single SKU, the straight bore timing pulley type is the most practical choice because it can be precision-bored to any size within the hub diameter constraints on arrival at the machine shop.<\/div>\n<\/details>\n
\nQ2. Where can I find a reliable supplier of L100 straight bore timing pulleys in stock for same-week dispatch to North America or Europe?<\/summary>\n
A2. We maintain stock of the most common L100 straight bore timing pulley<\/strong> tooth count variants \u2014 typically 14 to 36 teeth in Steel and 50 to 72 teeth in Cast Iron \u2014 and can dispatch within 3 to 5 working days to North America and most European destinations by air freight. For buyers searching for a straight bore timing pulley nearby<\/strong> with fast availability, less common tooth counts or custom bore requirements have production lead times of 10 to 20 working days. Contact our sales team with your part code, quantity, and required delivery date for a confirmed availability and shipping cost response.<\/div>\n<\/details>\n
\nQ3. How do I calculate the correct tooth count for an L100 timing pulley to achieve a specific speed ratio in my conveyor drive system in Australia?<\/summary>\n
A3. The speed ratio of a straight bore timing pulley<\/strong> drive equals the ratio of the driven pulley tooth count to the drive pulley tooth count. For example, if your motor shaft straight bore timing pulley has 20 teeth (20 L 100) and you need a 3:1 speed reduction, select a 60-tooth driven straight bore timing pulley (60 L 100) to achieve the exact ratio. For torque capacity verification, calculate the pitch diameter of each straight bore timing pulley using Dp = N \u00d7 9.525 \/ \u03c0 and use the belt manufacturer’s power rating tables to confirm the drive is within capacity at your operating speed and torque. Our technical team can assist with this calculation for Australian conveyor or industrial plant applications.<\/div>\n<\/details>\n
\nQ4. What is the difference between the L series and HTD timing belt pulleys and which one should I choose for a CNC routing machine drive?<\/summary>\n
A4. The L series straight bore timing pulley<\/strong> uses a trapezoidal tooth profile and a 9.525 mm pitch, which is an established standard widely used in light to medium duty synchronous drives including CNC positioning axes. HTD (High Torque Drive) pulleys use a rounded curvilinear tooth profile designed to reduce tooth root stress concentration, which makes them better suited to high-torque, shock-load applications such as main spindle drives. For a CNC routing machine positioning axis with servo or stepper motor input, the L series straight bore timing pulley<\/strong> is commonly used and provides adequate capacity for most cutting forces. For heavy-duty spindle drive applications on the same machine, an HTD or AT series would be the better choice. Among timing belts and pulleys<\/strong> in the L family, the straight bore type is the most commonly stocked and the easiest to integrate into existing drive shaft configurations.<\/div>\n<\/details>\n
\nQ5. What timing belt should I pair with the 25 L 100 straight bore timing pulley and what belt width does the belt width code 100 indicate?<\/summary>\n
A5. The part code 25 L 100 specifies a 25-tooth L-pitch straight bore timing pulley<\/strong> with a belt width reference code of 100, which corresponds to a 1-inch-wide (25.4 mm) L-series timing belt. The mating belt designation is an L-profile belt with width designation 100 \u2014 available from major timing belt manufacturers as a standard stocked item in cut lengths and endless loop formats. The flanged configuration (type 6F) on the 25-tooth steel straight bore timing pulley variant helps to keep the 25.4 mm wide belt centered on the pulley face without requiring external belt guides in most horizontal drive arrangements.<\/div>\n<\/details>\n
\nQ6. Are L100 Cast Iron timing pulleys available with a finished bore and setscrew ready for immediate installation in a food processing plant in Southeast Asia?<\/summary>\n
A6. Yes, we can supply L100 Cast Iron straight bore timing pulley<\/strong> units with a finished bore to your specified shaft diameter, with one or two setscrews over a keyway, ready for direct installation. For food processing applications in Southeast Asian markets, please specify if the application requires a specific corrosion protection finish such as clear lacquer, zinc phosphate, or unpainted bare machined surface, as some food processing facility standards specify no loose paint coating on equipment above open product lines. Minimum order quantity for finished bore straight bore timing pulley variants is generally 5 pieces per size.<\/div>\n<\/details>\n
\nQ7. What is the difference between the 6F, 6WF, 6W, and 6A flange type codes in the L100 straight bore timing pulley series?<\/summary>\n
A7. The type codes describe the flange configuration of the straight bore timing pulley<\/strong>: 6F indicates a standard flanged unit (one or two flanges) that fits within the F belt-width envelope. 6WF is a wide-flanged type where the pulley body is wider than the belt to accommodate the flange outside the belt running surface, used for wider belt spans. 6W is a wide straight bore timing pulley type without a flange on either side, used where the belt is guided laterally by housing features rather than pulley flanges. 6A is a Cast Iron wide straight bore timing pulley type without flanges, used on the larger-diameter models where the pulley mass and the low rotational speed make belt wander less of an issue, or where the machine housing constrains lateral movement.<\/div>\n<\/details>\n<\/div>\n<\/div>\n

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

The EP-L100 is a straight bore timing pulley manufactured to the L Series standard, with a nominal pitch of 9.525 mm and a belt width reference of 100 (1 inch). This series covers tooth counts from 10 to 120 teeth, offering one of the broadest selection ranges available within a single L-pitch timing pulley family. The pitch diameter of the series spans from 30.32 mm on the 10-tooth model all the way to 363.83 mm on the 120-tooth variant, making it suitable for both compact machine designs and large-center-distance power transmission layouts where a timing belt pulley with consistent dimensional standards is required.<\/p>\n

Available in two material grades \u2014 Steel for the 10 to 48 tooth range and Cast Iron for 49 teeth and above \u2014 the L100 straight bore timing pulley is machined with a clean through-bore that accepts custom finishing to the user’s exact shaft diameter. The bore (d) is standardized at 8 mm for the smallest variants, stepping to 11 mm for mid-range teeth, then to 14 mm for Cast Iron models, accommodating a wide range of shaft sizes used in industrial machinery without requiring a taper lock bush or other intermediate hub element. Flange configurations cover 6F (flanged), 6WF (wide flanged), 6W (wide without flange), and 6A (unflanged wide Cast Iron), providing flexibility across belt tracking requirements and application environments.<\/p>","protected":false},"featured_media":3503,"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-3500","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\/ru\/wp-json\/wp\/v2\/product\/3500","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/china-timing-pulley.xyz\/ru\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/china-timing-pulley.xyz\/ru\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/china-timing-pulley.xyz\/ru\/wp-json\/wp\/v2\/comments?post=3500"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/china-timing-pulley.xyz\/ru\/wp-json\/wp\/v2\/media\/3503"}],"wp:attachment":[{"href":"https:\/\/china-timing-pulley.xyz\/ru\/wp-json\/wp\/v2\/media?parent=3500"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/china-timing-pulley.xyz\/ru\/wp-json\/wp\/v2\/product_brand?post=3500"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/china-timing-pulley.xyz\/ru\/wp-json\/wp\/v2\/product_cat?post=3500"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/china-timing-pulley.xyz\/ru\/wp-json\/wp\/v2\/product_tag?post=3500"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}