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DS100R21H Double Single Roller Chain Sprocket bushed for MST (R1)

$314.48 Each


  • Typically ships in: 1 day
  • Weight: 25.3 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 100 Hub Recessed For Chain Clearance No
Chain Pitch 1.250 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 9.040 in. Bushing Part Number R1
Pitch Diameter 8.387 in. Bushing Min Bore Size 1.125 in.
Single Strand Tooth Thickness 0.692 in. Bushing Max Bore Size 3.750 in.
Hardened Teeth Yes
Storage Dimension Length 9.040 in. Weight 25.29 lbs.
Storage Dimension Width 9.040 in. Individually Packaged No
Storage Dimension Height 2.688 in.


Number Of Teeth 21
Outside Dia 9.040"
Material Steel
Pitch 1.250 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