Motorcycle timing chains

The timing chain functions in the same way that a timing belt does. The difference between the two is simply the material and location. One is constructed of metal and the other, a reinforced rubber. Though timing chains were used first, belts were introduced into vehicles in the 1960s. Belts…

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TOPCHAIN NO. Type Pitch Width Roller Plate Pin Average Approx Weight
 Ultimate kg/m
P W Dia Height Thickness Dia Lengths Strength
inch mm mm R H1 H2 T1 T2 D F G kgf
＊25 A 1/4″ 6.35 3.18 3.3 5 5.8 0.75 0.75 2.3 3.8 4.8 450 0.14
＊25-2 B 1/4″ 6.35 3.18 3.3 5 5.8 0.75 0.75 2.3 7.03 8.02 900 0.26
＊25F A 1/4″ 6.35 3.18 3.3 5.8 5.8 0.75 0.75 2.3 3.8 4.8 450 0.15
＊25H A 1/4″ 6.35 3.18 3.3 5 5.8 1 1 2.3 4.5 5.1 560 0.16
＊25FH A 1/4″ 6.35 3.18 3.3 5.8 5.8 1 1 2.3 4.5 5.1 560 0.17
05E A 0.315″ 8 4.7 5.65 7.6 7.6 1 1.25 3.05 5.95 7.15 920 0.33
＊05T A 0.315″ 8 4.7 4.73 7.6 7.6 1 1.25 3.05 5.5 6.9 920 0.32
06B A 0.375″ 9.525 5.72 6.35 8.1 8.1 1 1.2 3.28 6.1 7.4 1050 0.39
06BA A 0.375″ 9.525 5.72 6.35 8.1 8.1 1.25 1.25 3.28 6.5 7.45 1050 0.4
06BH A 0.375″ 9.525 5.72 6.35 8.1 8.1 1.25 1.5 3.28 6.93 8.17 1250 0.45
＊06D A 0.375″ 9.525 5.72 6.35 9.5 9.5 1.25 1.3 4.44 6.75 7.75 1050 0.52
06B-2 C 0.375″ 9.525 5.72 6.35 8.1 8.1 1 1.25 3.28 11.2 12.3 1900 0.74
06BH-2 C 0.375″ 9.525 5.72 6.35 8.1 8.1 1.25 1.5 3.28 12.6 14 2500 0.8
＊35-2
B 3/8″ 9.525 4.76 5.08 7.6 9 1.2 1.2 3.59 10.8 12 2050 0.69
＊35F A 3/8″ 9.525 4.76 5.08 8.7 8.7 1.25 1.25 3.58 5.88 6.7 1150 0.41
   ＊04M A 0.275″ 7 3.65 4 6.85 6.85 1 1.15 2.7 4.8 — 800 0.24
＊04M-2 C 0.275″ 7 3.65 4 6.85 6.85 1 1.15 2.7 8.9 — 1600 0.56
＊06D-2 C 0.375″ 9.525 4.2 6.35 9.5 9.5 1.25 1.55 4.44 10.9 — 2100 1.03
＊05CA A 0.315″ 8 4.8 5 7.55 7.55 1 1.35 3.15 5.8 — 920 0.38

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