A timing pulley (also called a timing belt pulley or synchronous pulley) has evenly spaced teeth that mesh with a toothed timing belt for slip-free, synchronized power transmission. 3BG Supply stocks timing pulleys in aluminum, steel, and stainless steel, including metric and custom sizes, to pair with our timing belts. For OEM or bulk production runs, check out our timing pulley stock bar options, or browse the full pulleys and sheaves category.
Find the right Timing Pulley for your needs.
FAQs
What is a timing pulley?
A timing pulley is a toothed wheel designed to mesh with a matching toothed timing belt, transferring rotational power without the slippage common to smooth-faced pulleys and V-belts. The interlocking teeth keep the driving and driven shafts perfectly synchronized.
How does a timing belt work with a timing pulley?
The teeth on a timing belt engage with the grooves on a timing pulley, creating a positive mechanical link that eliminates slip and maintains a fixed speed ratio between shafts. This makes timing pulley and belt systems ideal for applications where precise indexing or synchronization matters.
What's the difference between a timing pulley and a V-belt pulley?
A timing pulley has machined teeth that mesh with a toothed belt for zero-slip, synchronized motion, while a V-belt pulley has a smooth, angled groove that relies on friction to grip a V-belt. V-belt systems tolerate some slip and are generally quieter, while timing systems offer more precise motion control.
Does 3BG Supply offer custom or metric timing pulleys?
Yes, 3BG Supply stocks metric timing pulleys alongside standard inch-pitch options, and can source custom timing pulleys machined to your specific tooth count, bore, and hub configuration. Send us your prints or an existing sample part for a quote.
How do I remove a timing belt pulley?
Most timing pulleys mount to a shaft using a keyway and set screw, or a bushing, so removal typically involves loosening the set screw or bushing bolts before sliding the pulley off the shaft. If the pulley uses a taper-lock or QD-style bushing, follow the standard jack-bolt removal procedure for that bushing type.
What is a timing belt idler pulley?
A timing belt idler pulley is a non-driven pulley used to guide, tension, or route a timing belt around obstructions in the drive layout without adding power to the system. See our idler pulley category for stocked options.
Industrial Timing Pulley Manufacturers
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