Timing Belts | McMaster-Carr

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	Belt Trade Size Belt Trade Size

AT10

	Belt Trade Number Belt Trade Number

	Teeth Shape Teeth Shape

	Trapezoidal
	Curved
	Tire Track

	Material Material

Rubber

Aluminum

	Reinforcement Material Reinforcement Material

	Color Color

	Black
	Gray
	White

	Maximum Temperature Maximum Temperature

	Minimum Temperature Minimum Temperature

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Manufacturer Equivalent Number Manufacturer Equivalent Number

	Teeth Finish Teeth Finish

Nylon Coated

Polyamide Coated

	For Maximum Belt Width For Maximum Belt Width

3mm

6mm

9mm

	For Shaft Diameter For Shaft Diameter

	OD OD

	Number of Flanges Number of Flanges

	Overall Width Overall Width

	Inside Width Inside Width

4mm

7.2mm

10.4mm

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1,476 Products

L Series Timing Belts and Pulleys

L Series Timing Belts

Neoprene is reinforced with fiberglass for quiet operation with high strength.

L Series Dust-Free Timing Belts

Urethane has excellent abrasion resistance, so these belts don’t create dust while they run.

L Series Heat-Resistant Timing Belts

Withstanding temperatures up to 400° F, silicone is the best choice for use in hot environments. Belts have Kevlar reinforcement, which has very high strength, low stretch, and excellent shock resistance.

L Series Cut-to-Length Timing Belts

Quiet-running neoprene is reinforced with high-strength fiberglass for use in general purpose linear motion drives.

L Series Dust-Free Cut-to-Length Timing Belts

Known for excellent abrasion resistance, use one of these urethane belts in your linear motion application to don’t create dust while they run. Belts have Kevlar reinforcement, which has very high strength, low stretch, and excellent shock resistance.

L Series Timing Belts with Teeth on Both Sides

Use a single belt to drive three or more pulleys in reversing and serpentine drive systems. These belts have teeth on both sides to transmit power from either side and rotate pulleys in opposite directions. Belts are neoprene with fiberglass reinforcement for quiet operation with high strength.

XL Series Timing Belts and Pulleys

XL Series Timing Belts

Belts combine neoprene with fiberglass reinforcement for quiet operation with high strength.

XL Series Dust-Free Timing Belts

Abrasion-resistant urethane means these belts don’t create dust while they run.

XL Series Heat-Resistant Timing Belts

Resisting temperatures up to 400° F, silicone can take the heat. Belts have Kevlar reinforcement, which has very high strength, low stretch, and excellent shock resistance.

XL Series Cut-to-Length Timing Belts

Use quiet-running neoprene with high-strength fiberglass reinforcement in your linear motion drive system.

XL Series Dust-Free Cut-to-Length Timing Belts

Drive linear motion while maintaining a clean environment—urethane has excellent abrasion resistance so these belts don’t create dust while they run. They have Kevlar reinforcement, which has very high strength, low stretch, and excellent shock resistance.

XL Series Timing Belts with Teeth on Both Sides

Often used in reversing and serpentine drive systems, teeth on both sides allow you to rotate pulleys in opposite directions. Belts are quiet-running neoprene and high-strength fiberglass.

MXL Series Timing Belts and Pulleys

MXL Series Timing Belts

Quiet-running neoprene is reinforced with high-strength fiberglass for use in general purpose drive systems.

MXL Series Dust-Free Timing Belts

Urethane has excellent abrasion resistance, so these belts don’t create dust while they run. They have Kevlar reinforcement, which has very high strength, low stretch, and excellent shock resistance.

MXL Series Corrosion-Resistant Timing Belt Pulleys

Anodized aluminum has good corrosion resistance.

MXL Series Cut-to-Length Timing Belts

Used to drive small-scale linear motion applications, these belts are neoprene with fiberglass reinforcement for quiet operation with high strength.

H Series Timing Belts and Pulleys

H Series Timing Belts

Good for use in general purpose drive systems, these belts combine quiet-running neoprene with high-strength fiberglass reinforcement.

H Series Dust-Free Timing Belts

Urethane has excellent abrasion resistance, so these belts don’t create dust while they run. Belts have steel reinforcement, which has very high strength, low stretch, and excellent shock resistance.

H Series Heat-Resistant Timing Belts

Enduring temperatures up to 400° F, silicone is the best choice for use in hot environments. Belts have Kevlar reinforcement, which has very high strength, low stretch, and excellent shock resistance.

H Series Cut-to-Length Timing Belts

Designed for use in linear motion drives, these belts are neoprene with fiberglass reinforcement for quiet operation with high strength.

H Series Dust-Free Cut-to-Length Timing Belts

Known for excellent abrasion resistance, use a urethane belt in your linear motion application to avoid dust from wear. They have Kevlar reinforcement, which has very high strength, low stretch, and excellent shock resistance.

T Series Dust-Free Timing Belts

Belts are abrasion-resistant urethane, so they don’t create dust while they run. They have steel reinforcement, which has very high strength, low stretch, and excellent shock resistance.

AT Series Dust-Free Cut-to-Length Timing Belts

Urethane has excellent abrasion resistance, so these belts don’t create dust while they run. They have steel reinforcement, which has very high strength, low stretch, and excellent shock resistance.

High-Strength Timing Belts and Pulleys

High-Strength Ultra-Quiet Timing Belts

These quiet-running timing belts have a curved tooth shape that provides higher strength than trapezoidal teeth.

High-Strength HTD Timing Belts

HTD (high torque drive) timing belts have a curved tooth shape that provides higher strength than trapezoidal teeth. Belts are neoprene with fiberglass reinforcement for quiet operation.

High-Strength HTD Cut-to-Length Timing Belts

Replace worn timing belts in 3D printers and other precision linear motion equipment with the exact belt length and teeth shape required. These high torque drive (HTD) belts come in a variety of lengths so you can cut the exact length you need.

Ultra-High-Strength Poly Chain Timing Belts

Strong enough to replace roller chain, these timing belts combine the high strength of a curved tooth with high-strength carbon fiber reinforcement.