Sprocket charts by chain size
Pitch, outside, bottom and caliper diameters for 8 to 120 teeth.
American ANSI B29.1 roller chain (A series)
- ANSI 25 (04C)1/4" x 1/8" · p 6.35 mm
- ANSI 35 (06C)3/8" x 3/16" · p 9.525 mm
- ANSI 40 (08A)1/2" x 5/16" · p 12.7 mm
- ANSI 50 (10A)5/8" x 3/8" · p 15.875 mm
- ANSI 60 (12A)3/4" x 1/2" · p 19.05 mm
- ANSI 80 (16A)1" x 5/8" · p 25.4 mm
- ANSI 100 (20A)1 1/4" x 3/4" · p 31.75 mm
- ANSI 120 (24A)1 1/2" x 1" · p 38.1 mm
- ANSI 140 (28A)1 3/4" x 1" · p 44.45 mm
- ANSI 160 (32A)2" x 1 1/4" · p 50.8 mm
- ANSI 200 (40A)2 1/2" x 1 1/2" · p 63.5 mm
- ANSI 240 (48A)3" x 1 7/8" · p 76.2 mm
European ISO 606 / DIN 8187 roller chain (B series)
- 05B8 x 3 mm · p 8 mm
- 06B3/8" x 7/32" · p 9.525 mm
- 08B1/2" x 5/16" · p 12.7 mm
- 10B5/8" x 3/8" · p 15.875 mm
- 12B3/4" x 7/16" · p 19.05 mm
- 16B1" x 17,02 mm · p 25.4 mm
- 20B1 1/4" x 3/4" · p 31.75 mm
- 24B1 1/2" x 1" · p 38.1 mm
- 28B1 3/4" x 1 1/4" · p 44.45 mm
- 32B2" x 1 1/4" · p 50.8 mm
- 40B2 1/2" x 1 1/2" · p 63.5 mm
- 48B3" x 1 3/4" · p 76.2 mm