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4012 1/2 PITCH: #40 Bore: 1/2 INCH

BRAND: Martin Sprocket | MODEL: 4012 1/2 | CONDITION: NEW | SKU: 262149
4012 1/2 PITCH: #40 Bore: 1/2 INCH

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Weight: 0.43 lbs UOM: EA

Additional Description

Technical Specifications

Number Of Teeth 12
Outside Dia 2.000"
Material Steel
Pitch 40.000 in.


Roller chain couplings have a torque capacity in excess of the torque normally transmitted by shafting which falls within the coupling bore range. Select the smallest coupling, which will accomodate both shafts. For a reversing operation, shock or pulsating loads, or other severe operating conditions, select the next larger coupling size. A cover should be used to assure maximum service life, particularly if the coupling operates at high speeds or under moist conditions. For proper lubrication, fill the space between the cover and the coupling with soft to medium consistency coupling grease. Many finished bore sizes available as well as stock bore blanks that can be altered. Chains, Covers stocked in all branch locations. All stock roller chain couplings have hardened teeth.
Material Steel Bore Type Bored To Size
Coupling Size 40 Finished Bore Size 0.500 in.
Chain Pitch 40.000 in. Key Way Size 1/8 X 1/16 in.
Number of Teeth 12 Set Screw Size #10-24X3/16 in.
Pitch Diameter 1.932 in. Set Screw Location 1 Over Keyway
Outside Diameter 2.000 in. Number of Set Screws 1
Hub Outside Diameter 1.406 in. Min Bore Size 0.500 in.
Length Thru Bore 1.125 in. Max Bore Size 0.875 in.
Hardened Teeth Yes
Storage Dimension Length 2.125 in. Weight 0.45 lbs.
Storage Dimension Width 2.125 in. Individually Packaged Boxed
Storage Dimension Height 1.190 in.