Basic Info.

Model NO.	T20
Type	Timing Pulley
Certification	SGS,RoHS
Trademark	JBOSUN
Transport Package	Carton, Wooden
Specification	SGS, ROHS
Origin	Shenzhen China
HS Code	84839000

Product Description

We produce good quality, competitively priced timing pulleys in a variety of styles and sizes for customers and standard applications.

Timing Pulley
	Type	Belt nominal width	Pulley width	Step/hub	Flange diameter	Flange thickness	Number of tooth(or as blueprint)
T Type	MXL	3.048mm~25.4mm	4mm~27mm	as your request	as standard	1.0mm~3.0mm	15~200
	XL	4.826mm~50.8mm	6mm~52mm			1.0mm~3.0mm	10~200
	L	9.398mm~76.2mm	11mm~79mm			1.5mm~3.0mm	10~200
	H	9.398mm~101.6mm	11mm~105mm			1.0mm~3.0mm	10~200
	XH	19.05mm~127mm	21mm~131mm			1.0mm~3.0mm	18~120
	XXH	25.4mm~152.4mm	29mm~158mm			2.0mm~3.0mm	18~120
	T2.5	3mm-30mm	4mm-32mm			1.0mm~3.0mm	12~200
	T5	4mm~50mm	5mm-52mm			1.0mm~3.0mm	10~300
	T10	10mm~100mm	11mm~102mm			1.5mm~3.0mm	12~200
	T20	20mm~100mm	22mm~103mm			1.5mm~3.0mm	18~120
	AT5	6mm~50mm	7mm~52mm			1.0mm~3.0mm	14~300
	AT10	10mm~100mm	11mm~102mm			1.5mm~3.0mm	12~200
	AT20	20mm~100mm	22mm~103mm			1.5mm~3.0mm	18~120
Arc Type	2M	3mm-30mm	4mm~32mm			1.5mm~3.0mm	15~200
	3M	3mm-30mm	4mm~32mm			1.0mm~3.0mm	12~250
	5M	10mm~50mm	11mm~52mm			1.0mm~3.0mm	14~300
	8M	10mm~85mm	12mm-87mm			1.0mm~3.0mm	16~200
	14M	20mm~115mm	22mm-119mm			1.5mm~3.0mm	18~200
	S2M	3mm-30mm	4mm~32mm			1.0mm~3.0mm	15~200
	S3M	3mm-30mm	4mm~32mm			1.0mm~3.0mm	12~250
	S5M	10mm~50mm	11mm~52mm			1.0mm~3.0mm	14~300
	S8M	10mm~85mm	12mm-87mm			1.5mm~3.0mm	16~200
	2GT	3mm-30mm	4mm~32mm			1.0mm~3.0mm	15~200
	3GT	3mm-30mm	4mm~32mm			1.0mm~3.0mm	12~250
	5GT	10mm~50mm	11mm~52mm			1.0mm~3.0mm	14~300
	8MGT	10mm~85mm	12mm~87mm			1.0mm~3.0mm	10~200

Production process

1. Material selection and preparation
Use high-strength steel, aluminum alloy or cast iron as raw materials to ensure that the pulley has good mechanical strength and wear resistance.

Steel is generally made of carbon steel or alloy steel, and aluminum alloy is anodized to improve corrosion resistance.

2. Blank forming
Pulley blanks are made by forging, casting or cutting.

Aluminum alloy pulleys are mostly cast or CNC machined, while steel pulleys can be forged or mechanically cut.

3. Precision machining
Precision turning of the outer diameter, inner diameter and flange of the pulley to ensure dimensional accuracy and surface finish.

Gear milling: Use a special gear hob (such as HSS high-speed steel hob) to mill the pulley tooth profile to ensure that the tooth profile is fully matched with the T20 synchronous belt tooth profile, ensuring meshing accuracy and transmission stability.

Drilling and keyway machining: Machining the center hole, keyway or tapered bushing hole according to design requirements to facilitate pulley installation and fixing.

4. Surface treatment
Steel pulleys are usually phosphated or blackened to improve corrosion resistance and surface hardness.

Aluminum alloy pulleys are mostly anodized to enhance wear resistance and oxidation resistance.

5. Dynamic balancing and quality inspection
Static or dynamic balancing correction is performed on pulleys with larger sizes or high speeds to ensure smooth operation and reduce vibration and noise.
Multiple tests are performed on size, tooth shape, hardness and surface quality to ensure that the product meets the design standards.

6. Packaging and delivery
Qualified pulleys are cleaned and rust-proofed before being packaged to prevent damage or rust during transportation.

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