Size 05B chain is the third smallest British Standard roller chain made. Because of this, high-precision tolerances are necessary not only for manufacturing the chain but manufacturing the sprockets as well. Our sprockets are made with these high-precision tolerances using state of the art modern equipment, they are also constructed out of a high-quality high-strength steel so not only are the 05B sprockets effectively high-performance, they also out-last other brands. Standard configurations for these sprockets include A-Plate and B-Hub (hub on 1 side), while stock bores will range from 5mm up to 20mm and outside diameters range from 24mm to 322.5mm.

05B A-plate Sprockets

 

 

 

 

 

 

 

Sprocket Size	Tooth Count	Outside Diameter (OD)	Pitch Diameter (PD)	Stock Bore (ID)	Thickness (T)	Weight (kg)
05B B-Hub Sprockets                 Sprocket Size Outside Diameter (OD) Pitch Diameter (PD) Hub Diameter (H) Stock Bore (ID) Length Thru Bore (L) Thickness (T) Weight (kg) 05B8 24.0mm 20.90mm 13mm 6mm 12mm 2.8mm 0.02 05B9 26.6mm 23.39mm 15mm 6mm 12mm 2.8mm 0.02 05B10 29.2mm 25.89mm 17mm 8mm 12mm 2.8mm 0.02 05B11 31.7mm 28.39mm 18mm 8mm 13mm 2.8mm 0.03 05B12 34.2mm 30.91mm 20mm 8mm 13mm 2.8mm 0.03 05B13 36.7mm 33.42mm 23mm 8mm 13mm 2.8mm 0.05 05B14 39.2mm 35.95mm 25mm 8mm 13mm 2.8mm 0.05 05B15 41.7mm 38.48mm 28mm 8mm 13mm 2.8mm 0.07 05B16 44.3mm 41.01mm 30mm 8mm 14mm 2.8mm 0.08 05B17 46.8mm 43.53mm 30mm 8mm 14mm 2.8mm 0.08 05B18 49.3mm 46.07mm 30mm 8mm 14mm 2.8mm 0.09 05B19 51.9mm 48.61mm 30mm 8mm 14mm 2.8mm 0.09 05B20 54.4mm 51.14mm 30mm 8mm 14mm 2.8mm 0.10 05B21 57.0mm 53.67mm 35mm 8mm 14mm 2.8mm 0.12 05B22 59.5mm 56.21mm 35mm 8mm 14mm 2.8mm 0.13 05B23 62.0mm 58.75mm 35mm 8mm 14mm 2.8mm 0.14 05B24 64.6mm 61.29mm 35mm 8mm 14mm 2.8mm 0.14 05B25 67.5mm 63.83mm 35mm 8mm 14mm 2.8mm 0.14 05B26 69.5mm 66.37mm 40mm 10mm 16mm 2.8mm 0.14 05B27 72.2mm 68.91mm 40mm 10mm 16mm 2.8mm 0.20 05B28 74.8mm 71.45mm 40mm 10mm 16mm 2.8mm 0.21 05B29 77.3mm 73.99mm 40mm 10mm 16mm 2.8mm 0.21 05B30 79.8mm 76.53mm 40mm 10mm 16mm 2.8mm 0.22 05B31 82.4mm 79.08mm 40mm 10mm 16mm 2.8mm 0.22 05B32 84.9mm 81.61mm 40mm 10mm 16mm 2.8mm 0.24 05B33 87.5mm 84.16mm 40mm 10mm 16mm 2.8mm 0.24 05B34 90.0mm 86.70mm 40mm 10mm 16mm 2.8mm 0.24 05B35 92.5mm 89.24mm 40mm 10mm 16mm 2.8mm 0.24 05B36 95.0mm 91.79mm 40mm 10mm 16mm 2.8mm 0.24 05B37 97.6mm 94.33mm 40mm 10mm 16mm 2.8mm 0.24 05B38 100.2mm 96.88mm 40mm 10mm 16mm 2.8mm 0.28 05B39 102.7mm 99.42mm 40mm 10mm 16mm 2.8mm 0.28 05B40 105.3mm 101.97mm 40mm 10mm 16mm 2.8mm 0.28 05B45 118.0mm 114.69mm 60mm 12mm 20mm 2.8mm 0.88 05B50 130.7mm 127.41mm 60mm 12mm 20mm 2.8mm 0.88 05B57 146.8mm 145.22mm 80mm 14mm 20mm 2.8mm 1.20