Motorcycle Sprocket

Motorcycle sprocket is a key component in the motorcycle transmission system. Here are some introductions about it:

Function: To transmit the power generated by the engine to the wheels through a chain, driving the motorcycle to travel. By combining sprockets with different numbers of teeth, the transmission ratio can be changed to meet the power output of motorcycles under different road conditions and driving needs, such as acceleration, climbing, or high-speed driving

Structure and Classification

Structure: A sprocket is usually composed of a hub, spokes, and a ring gear.

. The hub is used for installation on the shaft, and the spokes connect the hub and the ring gear. The teeth on the ring gear mesh with the chain

Classification: According to the number of sprocket rows, it can be divided into single row sprockets and multi row sprockets. Motorcycles generally use single row sprockets; It can be divided into driving sprocket (installed on the engine output shaft) and driven sprocket (installed on the rear axle) according to their purposes

Materials

Common materials include excellent carbon steel (such as 45 steel), alloy steel, Q235, Q275, and gray cast iron.

. In order to improve the performance, strength, and fatigue resistance of the sprocket (based on actual reports), the tooth surface is usually subjected to heat treatment such as quenching, carburizing, nitriding, etc

Click to view the motorcycle model parameter table：

		Chain type	number of teeth
1	Alpha	420	36
2	Alpha	420	39
3	Alpha	420	41
4	Alpha	420	43
5	Alpha	420	46
6	pit bike	420	36
7	pit bike	420	39
8	pit bike	420	41
9	pit bike	420	43
10	pit bike	420	46
11	pit bike	428	36
12	pit bike	428	39
13	pit bike	428	41
14	pit bike	428	43
15	pit bike	428	46
16	CG/CB	520	36
17	CG/CB	520	39
18	CG/CB	520	41
19	CG/CB	520	43
20	CG/CB	520	46
21	CG/CB	520	49
22	CG/CB	525	39
23	CG/CB	525	41
24	CG/CB	525	43
25	CG/CB	530	39
26	CG/CB	530	41
27	CG/CB	530	43
28	dirt bike	520	36
29	dirt bike	520	39
30	dirt bike	520	41
31	dirt bike	520	43
32	dirt bike	520	46
33	dirt bike	520	49
34	dirt bike	525	41
35	dirt bike	530	41
36	139fmb	420	13
37	139fmb	420	14
38	139fmb	420	15
39	139fmb	420	16
40	139fmb	420	17
41	139fmb	428	13
42	139fmb	428	14
43	139fmb	428	15
44	139fmb	428	16
45	139fmb	428	17
46	CG/CB	428	13
47	CG/CB	428	14
48	CG/CB	428	15
49	CG/CB	428	16
50	CG/CB	428	17
51	CG/CB	428	18
52	CG/CB	428	19
53	CG/CB	520	12
54	CG/CB	520	13
55	CG/CB	520	14
56	CG/CB	520	15
57	CG/CB	520	16
58	CG/CB	520	17
59	CG/CB	520	18
60	CG/CB	520	19
61	CG/CB	520	13
62	CG/CB	525	14
63	CG/CB	525	16
64	CG/CB	525	18
65	CG/CB	530	13
66	CG/CB	530	14
67	CG/CB	530	16
68	CG/CB	530	18