STS/STD tooth synchronous pulley

STS/STD tooth Synchronous pulley also known as semi-circular tooth Synchronous pulley.

STS/STD Synchronous pulley Category: S2M, S3M, S4.5M, S5M, S8M, S14M

STS/STD Synchronous pulley Raw materials: Generally made of steel, aluminum alloy, cast iron, brass, etc. The inner hole has round hole, D-shaped hole, conical hole and other forms.

STS/STD Synchronous pulley surface treatment: Natural oxidation, blackening, zinc plating, color zinc plating, high frequency quenching and other treatment. Accuracy level depends on customer requirements.

1. The STS/STD Synchronous pulley produced by our factory is not only for the STS/STD Synchronous belt of domestic equipment, but also can replace the imported STS/STD Synchronous pulley.

2, user customized STS/STD Synchronous pulley, please provide pulley drawing (it is not necessary to draw the tooth shape size of the pulley in the drawing), our factory can also draw pulley drawing according to the specifications provided by the user, the inner hole of the pulley, the keyway, the width and other dimensions for the user.

3, our factory STS/STD Synchronous pulley can be processed according to user needs, and our factory can also develop drawings for users.

Presentation method	Code	Material	Surface treatment
	LYA	Aluminum alloy	Natural anodizing
	LYZ		Hard oxidation
	LYH		Do not process
	LYY	45# steel	Blackening treatment
	LYD		Galvanizing
	LYM		Do not process

Standard keyway size table (dH7: indicates inner hole size; bJS9: indicates the keyway width; t tolerance: keyway depth
Model	dH7		bJS9		t tolerance		Model	dH7		bJS9		t tolerance		Model	dH7		bJS9		t tolerance
N8	8	+0.015 0	3	±0.0125	1.4	+0.1 0	N23	23	+0.021 0	8	±0.018	3.3	+0.2 0	N38	38	+0.025 0	10	±0.018	3.3	+0.2 0
N10	10	+0.015 0	3	±0.0125	1.4		N24	24	+0.021 0					N39	39		12	±0.0215
NK10	10	+0.018 0	4	±0.015	1.8		N25	25						N40	40
N11	11				1.8		N26	26						N41	41
N12	12				2.3		N27	27						N42	42
N13	13						N28	28						N43	43
N14	14		5				N29	29						N44	44
N15	15						N30	30						N45	45		14		3.8
N16	16						N31	31						N46	46
N17	17						N32	32	+0.025 0	10				N47	47
N18	18		6		2.8		N33	33						N48	48
N19	19	+0.021 0					N34	34						N49	49
N20	20						N35	35						N50	50
N21	21						N36	35
N22	22						N37	37
Note: When the shaft hole is 10, the keyway width is 4.0MM, and the keyway depth is 1.8MM, the shaft hole is represented by NK10

Model	Pitch Pb	Slot width S	Tooth height hg	Base radius R	Tip radius rb	Root radius rt
S2M	2.00	1.30	0.76	1.325	0.19	0.10
S3M	3.00	1.95	1.11	1.975	0.28	0.15
S4.5	4.50	2.93	1.59	2.980	0.38	0.20
S5M	5.00	3.25	1.77	3.275	0.55	0.25
S8M	8.00	5.20	2.83	5.300	0.75	0.40
S14M	14.00	9.10	4.95	9.280	1.31	0.75