Skip to content Skip to navigation menu
Metric Roller Chain Sprocket

20A40

Metric Roller Chain Sprocket
Item #100966914
  • 20B-1 Chain Number
  • 1 Strand
  • 40 Teeth
  • Without Hardened Teeth
  • A Sprocket Style
  • 32 mm Minimum Bore
  • 375.19 mm Maximum Bore
+ Show More + Show Less
Metric Roller Chain Sprocket
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
  • 20B-1 Chain Number
  • 1 Strand
  • 40 Teeth
  • Without Hardened Teeth
  • A Sprocket Style

description

  • Maximum bores shown will accommodate standard keyseat and setscrew over keyseat. Slightly larger bores are possible with no keyseat, shallow keyseat, or setscrew at an angle to keyseat.

features

  • Manufactured of high carbon steel
  • Precise machining and processes ensure consistent finish and high quality
  • Bores are concentric to pitch line, minimizing run out
  • Chain rows are parallel and precisely spaced to increase longevity of sprocket and chain
Bore Range [Min] 32 mm
Bore Range [Max] 375.19 mm
Bore Type Reborable
Chain Pitch 31.75 mm
Hardened Teeth Without Hardened Teeth
Martin No. 20A40
Outside Dia. [Min] 425.31 mm
Hub Dia. N/A
Bore Style Minimum Bore
Hub Length Thru N/A
Length Through Bore 18.59 mm
Pin Diameter 19.05 mm
Hub Projection N/A
Family Name No. 20 - 31.750 mm Pitch - Single - A
No. of Strands Across 1
Single Strand Tooth Thickness 18.59 mm
Pitch Root Diameter 385.6 mm
Width Across Teeth 18.59 mm
Caliper Diameter 385.62 mm
Pitch Diameter 404.7 mm
Material Steel
Pitch Diameter [Min] 404.7 mm
Chain No. 20B, 20B-1
Series A
Root Diameter 385.6 mm
No. of Teeth 40
Sprocket Style A
Inch/Metric Metric
Outside Dia. 425.31 mm
Weight 38.62 LB
EAN or UPC 697950404295
We're here for you
with Service Centers across the country -
We have your back
Close Compare List Open Compare List Toggle

Product Comparison