Timing Belts – High-Precision Power Transmission for Industrial & Automation Systems
MXL, XL, L, H, XH, XXH & HTD 3M, 5M, 8M, 14M, 20M Series
Timing belts are essential components in synchronous drive systems, providing precise motion control, slip-free performance, and maintenance-free operation. Used across industrial, commercial, and automation applications, these belts ensure exact synchronization between shafts, making them ideal for systems requiring accurate positioning and consistent power transmission. Two major timing belt categories dominate modern engineering: classical trapezoidal timing belts and curvilinear HTD belts, each offering unique performance advantages.
Classical Trapezoidal Timing Belts
MXL, XL, L, H, XH, XXH Series
These belts feature a trapezoidal tooth profile and are widely used in legacy systems, light machinery, and applications demanding precise indexing.
MXL – Mini Extra Light
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Pitch: 0.080" (2.03 mm)
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Applications: Robotics, instrumentation, printers, small devices
XL – Extra Light
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Pitch: 0.200" (5.08 mm)
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Applications: Office equipment, light-duty automation, 3D printers
L – Light
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Pitch: 0.375" (9.53 mm)
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Applications: Packaging, conveyors, textile equipment
H – Heavy
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Pitch: 0.500" (12.7 mm)
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Applications: Woodworking machinery, general industrial drives
XH – Extra Heavy
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Pitch: 0.875" (22.23 mm)
XXH – Double Extra Heavy
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Pitch: 1.25" (31.75 mm)
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Applications: Very high-torque industrial machines and heavy equipment
These belts provide outstanding positional accuracy and reduced backlash for synchronous motion applications.
HTD Timing Belts – High Torque Drive
Curvilinear Tooth Profile for Superior Load Distribution
HTD belts offer enhanced torque capacity and smoother meshing due to their rounded tooth profile, making them ideal for modern high-load systems.
HTD 3M – Precision devices, compact mechanisms
HTD 5M – Light automation, office systems
HTD 8M – General industrial machinery, compressors, packaging lines
HTD 14M – Heavy-duty torque drives, conveyors, crushers
HTD 20M – Extreme-load systems in mining, construction, and bulk handling
HTD belts often use fiberglass or steel tension cords, providing excellent strength and longevity.
Applications of Timing Belts
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Automotive: Camshafts, superchargers, engine timing
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Industrial Automation: CNC equipment, robotics, conveyors
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Commercial Machinery: Printers, copiers, plotters
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Home & Medical Equipment: Washers, vacuum systems, imaging machines
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Fitness Equipment: Treadmills, elliptical trainers
Benefits of Timing Belts
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High positional accuracy
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No slippage
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Zero lubrication required
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Quiet, efficient operation
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Long service life
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Ideal for compact synchronous drive layouts
Choosing the appropriate timing belt—from lightweight MXL series to high-torque HTD 14M and 20M profiles—ensures optimized performance, reduced maintenance, and maximum reliability in synchronous drive systems. For OEM replacements, cross-references, or engineering support, our experts are ready to assist in selecting the perfect belt for your application.