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20B51 Metric Roller Chain Sprocket

$512.80 Each


  • Typically ships in: 1 day
  • Weight: 78.0 lb
  • Free shipping on orders over $20

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Additional Description

Metric B Style sprockets are flat sprockets with a hub extension welded on one side. These plain bore sprockets can easily be bored to a metric or standard size to fit your application. Keyways, set screws and hardened teeth are quick alterations that can be made.
Material Steel Hub Configuration B
Chain Number 20B-1 Hub Outside Diameter 127.000 mm
Chain Pitch 31.750 mm Length thru Bore 64.008 mm
Number of Chain Rows 1 Hub Recessed For Chain Clearance No
Number of Teeth 51 Construction Detail Welded
Outside Diameter 536.387 mm Bore Type Stock Bore
Pitch Diameter 515.749 mm Min Bore Size 40.000 mm
Single Strand Tooth Thickness 18.593 mm Max Bore Size 86.000 mm
Hardened Teeth No
Storage Dimension Length 21.118 in. Weight 73.18 lbs.
Storage Dimension Width 21.118 in. Individually Packaged No
Storage Dimension Height 2.520 in.


Pitch 31.750 mm
Number Of Teeth 51
Outside Dia 536.387 mm
Material Steel
Pitch Diameter 515.749 mm

Return policy

Item must be unused.

Item must be in it's original package.

Restocking, shipping and handling fees may apply to any return with this manufacturer.

For more information please consult


Product's availability

State of California Proposition 65 Product Warning