Precision punching CD70 420 41T-14T

The "Precision Punching CD70 420 41T-14T" is a specification description for precision punched sprockets and chains applicable to CD70 motorcycles, as follows:

CD70： The Jialing CD70 motorcycle is a classic model known for its economy, practicality, and excellent quality. It has been widely used in China and is particularly popular among consumers in urban and rural areas

420： Representing chain specifications. The pitch of the chain in this specification is 12.7 millimeters, the roller diameter is 7.77 millimeters, the inner section width is 6.25 millimeters, the pin shaft diameter is 3.96 millimeters, and the chain plate thickness is 1.5 millimeters. Suitable for small displacement motorcycles, it can meet the transmission requirements of CD70, has strength and practicality, and is relatively lightweight

41T - 14T： Representing the combination of sprocket teeth, 41T is the number of rear sprocket teeth, and 14T is the number of front sprocket teeth. The transmission ratio formed by this tooth number combination is 41 ÷ 14 ≈ 2.93. A larger transmission ratio enables the vehicle to have strong power when starting and climbing, such as when starting on urban roads or encountering small slopes, making it relatively easy to handle. However, when driving at high speeds, the engine speed may be relatively high, which may lead to increased fuel consumption, and the vehicle's high speed may be subject to certain limitations

Precision punching: It is the manufacturing process of sprockets. The sprocket manufactured by precision punching technology has fine dimensions and an accuracy of up to 0.05mm. It has the characteristics of being super flat and super round, with full bright band, good precision, and good consistency. The small wheel adopts non oxidative co infiltration technology, with a high surface hardness; The large wheel adopts surface treatment technology for drilling parts, which improves performance stability. The fine punched sprocket has good meshing with the chain, which can reduce the jumping and noise during the transmission process, improve the transmission efficiency and stability, extend the service life, and is suitable for long-distance driving and working conditions with high requirements for transmission stability and noise

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