JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser.

Timing Belt Idler Pulleys

Our free-spinning pulleys are the perfect addition to your timing belt setup, helping to reduce vibration and prevent belt wear. A needle bearing at the center of each pulley is lined with small cylindrical rollers that minimize friction during rotation, allowing both the pulley and shaft to spin independently. Made from sturdy iron or steel, these pulleys are highly durable and wear-resistant, and the black oxide coating protects against corrosion in dry environments. The trapezoidal teeth on the outside of each pulley match the teeth inside your timing belt, ensuring a secure fit. Make sure to choose a pulley that matches your belt trade size, with a maximum width that's equal to or greater than the width of your timing belt.

SKU	For Shaft Dia.	OD	Material	Pitch (mm)	Bore Type	Overall Wd.	Pitch Dia.	Hub Dia.	Number of Teeth	Fabrication	For Max. Belt Wd.	Bearing Type	Dia.
Metric—Press-Fit Mount
For GT2 Belt Trade Size
UA6A_16V12	30mm	100mm	Black-Oxide Iron	8mm	Plain	91.19mm	91.67mm	79.5mm	36	Machined	62mm	Needle Roller	90.07mm
x Timing Belt Idler Pulleys Estimated Delivery - 15 to 17 days €363.77 Product Detail
UA6A_16V11	40mm	146mm	Black-Oxide Iron	14mm	Plain	58.67mm	133.68mm	111mm	---	Machined	37mm	Needle Roller	130.89mm
x Timing Belt Idler Pulleys Estimated Delivery - 15 to 17 days €506.38 Product Detail
UA6A_16V10	20mm	90mm	Black-Oxide Iron	8mm	Plain	45.97mm	81.48mm	69.85mm	32	Machined	21mm	Needle Roller	79.88mm
x Timing Belt Idler Pulleys Estimated Delivery - 15 to 17 days €247.94 Product Detail
For GT Belt Trade Size
UA6A_16V9	30mm	100mm	Black-Oxide Iron	8mm	Plain	48mm	91.67mm	---	36	Machined	30mm	Needle Roller	90.3mm
x Timing Belt Idler Pulleys Estimated Delivery - 15 to 17 days €359.57 Product Detail
UA6A_16V8	20mm	90mm	Black-Oxide Iron	8mm	Plain	46.23mm	81.48mm	69.85mm	32	Machined	20mm	Needle Roller	80.12mm
x Timing Belt Idler Pulleys Estimated Delivery - 15 to 17 days €169.23 Product Detail
Inch—Press-Fit Mount
For XL Belt Trade Size
UA6A_16V7	12.7mm	35.6mm	Black-Oxide Steel	5.1mm	Plain	19.0mm	35.6mm	---	22	Machined	19.0mm	Needle Roller	34.9mm
x Timing Belt Idler Pulleys Estimated Delivery - 15 to 17 days €49.98 Product Detail
UA6A_16V6	12.7mm	38.1mm	Black-Oxide Steel	5.1mm	Plain	12.7mm	38.8mm	30.7mm	24	Machined	12.7mm	Needle Roller	38.1mm
x Timing Belt Idler Pulleys Estimated Delivery - 15 to 17 days €28.62 Product Detail
For L Belt Trade Size
UA6A_16V5	25.4mm	66.0mm	Black-Oxide Steel	9.5mm	Plain	28.6mm	66.7mm	44.4mm	22	Machined	25.4mm	Needle Roller	65.9mm
x Timing Belt Idler Pulleys Estimated Delivery - 15 to 17 days €60.57 Product Detail
UA6A_16V4	25.4mm	53.3mm	Black-Oxide Steel	9.5mm	Plain	28.6mm	54.6mm	44.4mm	18	Machined	25.4mm	Needle Roller	54.0mm
x Timing Belt Idler Pulleys Estimated Delivery - 15 to 17 days €44.93 Product Detail
For H Belt Trade Size
UA6A_16V3	25.4mm	71.1mm	Black-Oxide Iron	12.7mm	Plain	79.4mm	72.8mm	44.4mm	18	Machined	76.2mm	Needle Roller	63.5mm
x Timing Belt Idler Pulleys Estimated Delivery - 15 to 17 days €96.40 Product Detail
UA6A_16V2	25.4mm	63.5mm	Black-Oxide Steel	12.7mm	Plain	54.0mm	64.7mm	47.0mm	16	Machined	50.8mm	Needle Roller	63.5mm
x Timing Belt Idler Pulleys Estimated Delivery - 15 to 17 days €63.49 Product Detail
UA6A_16V1	25.4mm	63.5mm	Black-Oxide Steel	12.7mm	Plain	28.6mm	64.7mm	45.7mm	16	Machined	25.4mm	Needle Roller	63.5mm
x Timing Belt Idler Pulleys Estimated Delivery - 15 to 17 days €57.08 Product Detail