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DS80R21H Double Single Roller Chain Sprocket bushed for MST (R1)

$226.76 Each


  • Typically ships in: 1 day
  • Weight: 10.3 lb
  • Free shipping on orders over $20
  • Contiguous U.S. States

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Additional Description

Double single sprockets are precision machined steel spockets and run with two single chains. They are stocked in minimum plain bore, taper bushed and Martin Split Taper style. The minimum plain bores can be quickly modified for your specific application.
Material Steel Hub Configuration B
Chain Number 80 Hub Recessed For Chain Clearance No
Chain Pitch 1.000 in. Construction Detail Solid
Number of Chain Rows Double Single Bore Type Bushed MST
Number of Teeth 21 Key Way Size 3/4x4.190 in.
Outside Diameter 7.240 in. Bushing Part Number R1
Pitch Diameter 6.710 in. Bushing Min Bore Size 1.125 in.
Single Strand Tooth Thickness 0.575 in. Bushing Max Bore Size 3.750 in.
Hardened Teeth Yes
Storage Dimension Length 7.230 in. Weight 10.27 lbs.
Storage Dimension Width 7.230 in. Individually Packaged No
Storage Dimension Height 2.188 in.


Number Of Teeth 21
Outside Dia 7.240"
Material Steel
Pitch 1.000 in.

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