Raydafon Technology Group Co.,Limited
Raydafon Technology Group Co.,Limited
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20B Metric Roller Chain Sprockets

20B Metric Roller Chain Sprockets

Raydafon Group's 20B Metric Roller Chain Sprockets are engineered for superior power transmission in demanding applications. Featuring premium materials and precise design, these sprockets deliver exceptional durability, reduced wear, and smooth operation. Ideal for industrial machinery, automotive systems, and manufacturing professionals, they ensure reliable performance under heavy loads. Experience the confidence of seamless motion and enhanced longevity—choose Raydafon Group for precision that sets the standard in chain drive solutions.
20B roller chain sprockets are manufactured for metric 20B roller chain and are manufactured in accordance with ISO, DIN, and BS228/3 standards. Our sprockets are precision manufactured from high-quality steel, directly interchange with other manufactures, and are engineered for superb performance and durability. Common styles of these sprockets include; A-Plate, B-Hub, C-Hub, and taper bushed type but others are available upon request. The below charts show our standard sizes for 20B sprockets, if you don't see the exact sprocket you need we also custom manufacture sprockets.20B Metric Roller Chain Sprockets

20B A-Plate Sprockets:

20B Metric Roller Chain Sprockets

Sprocket Size
Tooth Count
Pitch Diameter
Stock Bore
Sprocket Weight (kg)
20A8882.97mm25mm0.63
20A9992.83mm25mm0.95
20A1010102.75mm25mm1.27
20A1111112.70mm25mm1.59
20A1212122.67mm25mm1.91
20A1313132.67mm25mm2.18
20A1414142.68mm25mm2.49
20A1515152.71mm25mm2.68
20A1616162.75mm24mm3.08
20A1717172.79mm24mm3.54
20A1818182.84mm30mm3.81
20A1919192.90mm30mm4.31
20A2020202.96mm30mm4.58
20A2121213.03mm32mm5.17
20A2222223.10mm32mm5.72
20A2323233.17mm32mm5.99
20A2424243.25mm32mm6.62
20A2525253.32mm32mm6.94
20A2626263.41mm32mm7.62
20A2727273.49mm32mm8.35
20A2828283.57mm32mm8.85
20A2929293.66mm32mm9.43
20A3030303.75mm32mm9.98
20A3131313.83mm32mm10.73
20A3232323.92mm32mm11.49
20A3333334.01mm32mm12.24
20A3434344.10mm32mm13.00
20A3535354.20mm32mm13.75
20A3636364.29mm32mm14.50
20A3737374.38mm32mm15.25
20A3838384.48mm32mm16.01
20A3939394.57mm32mm16.76
20A4040404.67mm32mm17.52
20A4141414.77mm32mm18.27
20A4242424.88mm32mm19.03
20A4343434.96mm32mm19.78
20A4444445.06mm32mm20.53
20A4545455.15mm32mm21.29
20A4646465.25mm32mm22.04
20A4747475.35mm32mm22.79
20A4848485.45mm32mm23.55
20A4949495.55mm32mm24.30
20A5050505.65mm32mm25.06
20A5151515.75mm40mm24.43
20A5252525.85mm40mm25.85
20A5353535.95mm40mm27.27
20A5454546.05mm40mm25.70
20A5555556.15mm40mm30.12
20A5656566.25mm40mm31.34
20A5757576.35mm40mm32.96
20A5858586.45mm40mm35.80
20A5959596.56mm40mm37.22
20A6060606.66mm40mm38.64
20A7070707.68mm40mm52.85
20A7272727.89mm40mm55.70
20A7676768.30mm40mm61.38
20A8080808.71mm40mm67.06
20A8484849.13mm40mm72.75
20A9090909.76mm40mm81.27
20A9595960.28mm40mm102.42
20A9696970.38mm40mm103.84
20A1141141152.27mm40mm130.84

20B B-Hub Sprockets:

20B Metric Roller Chain Sprockets

Hot Tags: 20B Metric Roller Chain Sprockets, Industrial Sprockets Manufacturer, Custom Roller Chain Sprockets
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Sprocket Size
Tooth Count
Pitch Diameter
Stock Bore
Maximum Bore
Hub Diameter
Length Thru Bore (LTB)
Sprocket Weight (kg)
20B8882.97mm25mm57mm48mm48mm1.04
20B9992.83mm25mm57mm58mm48mm1.45
20B1010102.75mm25mm60mm69mm48mm1.86
20B1111112.70mm25mm70mm79mm48mm2.40
20B1212122.67mm25mm76mm90mm48mm2.95
20B1313132.67mm25mm76mm98mm41mm3.00
20B1414142.68mm25mm76mm106mm41mm3.40
20B1515152.71mm25mm76mm114mm44mm4.31
20B1616162.75mm25mm76mm114mm44mm4.63
20B1717172.79mm32mm76mm114mm44mm4.99
20B1818182.84mm32mm76mm114mm44mm5.44
20B1919192.90mm32mm76mm114mm51mm5.90
20B2020202.96mm32mm76mm114mm51mm6.35
20B2121213.03mm32mm76mm114mm51mm7.03
20B2222223.10mm32mm76mm114mm51mm7.71
20B2323233.17mm32mm84mm114mm51mm8.16
20B2424243.25mm32mm84mm114mm51mm8.62
20B2525253.32mm32mm84mm114mm51mm9.07
20B2626263.41mm32mm84mm127mm51mm9.53
20B2727273.49mm32mm84mm127mm51mm10.43
20B2828283.57mm32mm84mm127mm51mm11.34
20B2929293.66mm32mm84mm127mm51mm11.76
20B3030303.75mm32mm84mm127mm51mm12.02
20B3131313.83mm32mm84mm127mm51mm12.77
20B3232323.92mm32mm84mm127mm51mm13.52
20B3333334.01mm32mm84mm127mm51mm14.59
20B3434344.10mm32mm84mm127mm51mm15.66
20B3535354.20mm32mm84mm127mm64mm16.74
20B3636364.29mm32mm84mm127mm64mm17.51
20B3737374.38mm32mm84mm127mm64mm18.17
20B3838384.48mm32mm84mm127mm64mm18.82
20B3939394.57mm32mm84mm127mm64mm19.78
20B4040404.67mm32mm84mm127mm64mm21.27
20B4141414.77mm32mm84mm127mm64mm22.07
20B4242424.88mm32mm84mm127mm64mm22.86
20B4343434.96mm32mm84mm127mm64mm23.40
20B4444445.06mm32mm84mm127mm64mm23.95
20B4545455.15mm32mm84mm127mm64mm24.49
20B4646465.25mm32mm84mm127mm64mm26.31
20B4747475.35mm32mm84mm127mm64mm28.12
20B4848485.45mm40mm102mm152mm64mm29.94
20B4949495.55mm40mm102mm152mm64mm31.76
20B5050505.65mm40mm102mm152mm64mm33.57
20B5151515.75mm40mm102mm152mm64mm35.39
20B5252525.85mm40mm102mm152mm64mm37.21
20B53