ईपी-टी 5 मिमी एल्युमिनियम टाइमिंग पुली, बेल्ट की चौड़ाई 16 मिमी | स्ट्रेट बोर टाइमिंग पुली

Aluminium alloy (6061-T6 or equivalent) has a density approximately one-third that of steel, directly reducing the rotational inertia (J = ½mR²) of the timing pulley at any given pitch diameter. In servo motor and stepper motor driven automation systems — where the torque available to accelerate the load is limited and fast cycle times require high angular acceleration of the driven inertia — minimising pulley inertia is a primary design goal. The EP-T5-27 range allows drive designers to achieve the required belt speed and torque ratio while keeping total drive inertia within the servo motor rated inertia range, enabling tighter control loops and faster cycle times.

The 23 part numbers in the T5-27 series cover pitch diameters from 15.92 mm (10 teeth) to 95.52 mm (60 teeth), supporting reduction ratios from near-unity through to 6:1. Having the full tooth count range available from a single China timing pulley supplier eliminates sourcing delays that arise when non-standard tooth counts must be special-ordered from multiple vendors.

Both the flange width (F = 21 mm) and hub length (L = 27 mm) are constant across all 23 part numbers in the T5-27 series. This dimensional uniformity means that every pulley in the drive train — whether at the motor shaft or the driven axis — occupies the same axial space and accepts the same width timing belt. Machine designers can route T5 timing belts past multiple pulleys without adjusting axial spacing, and maintenance teams can replace any pulley in the system with a same-tooth-count unit from stock without any machine adjustment, since all T5-27 pulleys share identical mounting dimensions.

The T5 tooth profile is defined by ISO 5296-1 (Synchronous Belt Drives — Metric Pitch) and is internationally standardized, ensuring that T5-27 pulleys from our facility mesh correctly with T5 timing belts from any compliant supplier worldwide. This standard profile compatibility is the fundamental interchangeability guarantee that global OEM machine builders rely on when sourcing replacement timing pulleys for installed machines — the replacement pulley must produce the same tooth contact geometry and pitch diameter as the original, regardless of which manufacturer supplies it.

All Type 6F pulleys (10 to 42 teeth) carry flanges with outer diameters listed in the Df column of the dimensional table. These flanges provide positive lateral retention of the T5 timing belt during operation, preventing belt edge walk-off under axial forces generated by shaft misalignment, belt entry angle variation, or lateral vibration in the drive system. The Type 6 pulleys (44, 48, and 60 teeth) omit separate flanges and rely on drive geometry for belt tracking — a standard approach at larger T5 pitch diameters where belt tension across the wide arc of contact provides natural retention.

The T5-27 body is machined from 6061-T6 aluminium alloy bar stock (or equivalent EN AW-6082 T6 for European market supply), providing a yield strength of approximately 276 MPa. This strength level is adequate for the tooth root bending stress generated at T5 pitch tooth dimensions under the rated belt tension for 16 mm wide T5 belts. Aluminium alloy 6061-T6 machines to excellent dimensional accuracy and surface finish on CNC turning and hobbing equipment, enabling the tooth profile and bore dimensions to meet the ISO 5296-1 tolerance grades required for correct belt mesh and rated drive performance.

The T5 tooth profile is a trapezoidal form with a 5.000 mm pitch, specified in ISO 5296-1 as part of the metric synchronous belt drive series. The tooth height, flank angle, and root radius are machined to the tolerances defined in the standard, ensuring correct belt tooth seating and pitch line position when meshed with an ISO 5296-1-compliant T5 timing belt. The aluminium tooth surface, while softer than steel, provides adequate wear resistance for the normal operating loads of a 16 mm T5 belt drive at typical automation and office equipment speeds. For higher load or abrasive environments, hard anodizing the tooth surfaces provides a surface hardness exceeding 300 HV, significantly extending tooth life.

Standard EP-T5-27 series pulleys are supplied in natural (uncoated) aluminium condition, with the machined tooth and bore surfaces left bright for dimensional accuracy verification. An optional Type II anodizing treatment (clear or black, 10 to 20 microns) improves corrosion resistance in humid environments. Type III hard anodizing (25 to 50 microns) provides higher surface hardness for tooth wear resistance. Both options are factory-applied; specify at order placement.

The flanges on Type 6F pulleys (10 to 42 teeth) are aluminium plate discs identified identified by the Flange Number in the dimensional table. Each flange is precision-turned to the Df outer diameter listed for that tooth count, providing the lateral retention gap between the belt edge and flange face consistent with the ISO 5296-1 belt-to-flange clearance specification. Type 6 pulleys (44, 48, and 60 teeth) in the T5-27 series omit flanges; the larger diameter of these pulleys provides inherent belt retention through the improved arc of contact and belt tension distribution at larger T5 pitch diameters.

The primary application for T5-27 pulleys is in servo motor and stepper motor driven positioning axes — XY gantries, pick-and-place heads, label applicators, and filling machine dosing axes — where the low rotational inertia of the aluminium timing pulley allows the motor to achieve high angular acceleration without exceeding the motor rated peak torque. The EP-T5-27 range covers motor shaft pulleys from 10 to 25 teeth and driven shaft pulleys from 25 to 60 teeth, providing the reduction ratios most commonly needed in servo axis belt-drive designs used across global industrial automation equipment.

Desktop 3D printers (FDM, resin), laser engravers, and compact CNC routing machines use T5 metric timing belt and pulley combinations for their XY motion systems. The compact pitch diameter of the T5 series — as small as 15.92 mm at 10 teeth — allows the pulley to be mounted directly on standard NEMA 17 stepper motor shafts (5 mm diameter) with minimal machine frame width, while the aluminium construction minimises shaft loading from the low rotating mass of the timing pulley and belt system. The T5-27 series covers the standard tooth counts used in most desktop machine tool axis designs globally.

Medical diagnostic instruments, automated liquid handling systems, and laboratory robotic sample handlers use T5-27 pulleys for their pipette drive and carousel positioning mechanisms. Aluminium is compatible with the cleanroom and sterile environment requirements of these applications — aluminium does not rust, produces no lubrication requirement, and the anodizing option provides an inert, particle-free surface suitable for use near biological samples. The low inertia of the T5-27 pulley is particularly valuable in micro-stepping liquid dispensing drives where each motor step must produce a controlled incremental movement of the dispensing head without overshoot.

High-speed document scanners, laser printers, and photocopier paper transport systems use T5 aluminium timing pulleys for paper feed rollers, platen drive, and ADF (automatic document feeder) transport mechanisms. The combination of light weight, correct T5 pitch, and low rotational inertia minimises the energy consumed in each paper advance cycle, contributing to the energy efficiency specification of the equipment. The tight pitch accuracy of the ISO 5296-1-compliant T5-27 pulley ensures consistent paper advance distance per motor step, maintaining document scan quality and print registration over millions of cycles.

In high-speed packaging machinery, T5-27 pulleys are used for auxiliary drives — label reel feed tensioners, film registration sensors, and date-code printer carriage drives — where the main machine drive uses larger H or L-pitch pulleys and the auxiliary T5 drives handle lightweight positioning tasks. The compact T5-27 range covers the small-diameter motor shaft pulleys and the slightly larger driven pulleys used in these auxiliary positions, allowing the machine builder to use a consistent T5 metric belt width for all auxiliary positions rather than mixing multiple belt pitch families.

Collaborative robot (cobot) arm joints, SCARA robot wrist drives, and delta robot link actuators use T5 aluminium timing pulleys and belts for their final reduction stages and cross-body cable-and-pulley transmission systems. The compact dimensions of the T5-27 series — Dp 15.92 to 95.52 mm — fit within the narrow link cross-sections of modern robot arm designs, and the low mass of the aluminium timing pulley minimises the distal arm inertia that the shoulder and elbow joints must accelerate. Robot joint belt drives typically use very high belt tension relative to the torque capacity, making the pull-through behaviour of the aluminium tooth profile the primary design constraint — specification of hard anodized T5 series pulleys is recommended for high-cycle robot joint applications.

T5 metric pitch toothed bars are used where the T5 belt drive converts rotary motion to linear motion — in XY gantry systems, belt-driven linear rails, and open-belt linear axes for 3D printers and CNC machines. The toothed bar replaces the driven pulley in linear applications, and the same T5 16 mm belt runs over the motor-side T5-27 pulley and along the toothed bar to produce the required linear displacement per motor revolution. Our T5 toothed bar range is dimensionally matched to the T5-27 aluminium timing pulley tooth profile, ensuring correct mesh engagement and rated linear force output.

In machinery where a main V-belt drive provides primary speed reduction from the motor before a T5 synchronous belt drive handles the final precision positioning stage, our V-belt pulley range complements the T5-27 product family. Sourcing both V-belt pulleys and T5 metric pulleys from the same China timing pulley supplier consolidates documentation, simplifies vendor qualification, and ensures consistent quality standards across both drive types in the machine. Our V-belt pulley range covers classical section (A, B, C) and narrow section (SPZ, SPA, SPB) profiles in a full range of groove configurations.