Skip to content Skip to navigation menu
Boston Gear40B21-3/4

40B21-3/4

Finished Bore Sprocket
Item #101836293
  • 40 Chain
  • 21 Teeth
  • 3/4" Bore
  • 3/16 in x 3/32 in Keyway
Boston Gear40B21-3/4
Price Unavailable
Price Unavailable
Pricing is unavailable at this time. Please contact Customer Service for assistance.
Online Ordering Restricted
Please contact Customer Service for assistance.
Contact Customer Service
    Shipment Options
  • 40 Chain
  • 21 Teeth
  • 3/4" Bore
  • 3/16 in x 3/32 in Keyway

features

  • Quality design
  • Superior fatigue resistance
  • Long operational life
  • Complete with keyway and setscrew

compliances

  • 0
Keyway 3/16 x 3/32
Sprocket Style B
Length Through Bore 1 in
Width Across Teeth 0.284 in
Hardened Teeth Without Hardened Teeth
Hub Projection 0.716 in
Hub Dia. 2 3/4 in
Finished Bore 3/4 in
Chain No. 40
Material Steel
Outside Dia. 3.617 in
Chain Pitch 0.5 in
No. of Strands Across 1
No. of Teeth 21
Inch/Metric Inch
Pitch Diameter 3.355 in
Weight 1.801 LB
EAN or UPC 781711171486
We're here for you
with Service Centers across the country -
We have your back
Close Compare List Open Compare List Toggle

Product Comparison