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Martin Sprocket 40BS21-7/8 PITCH: #40 TEETH: 21 BORE: 7/8 INCH

BRAND: Martin Sprocket | MODEL: 40BS21 7/8 | CONDITION: NEW | SKU: 261449
Martin Sprocket 40BS21-7/8 PITCH: #40 TEETH: 21 BORE: 7/8 INCH

Image for Illustration purposes only,
Actual product may vary
In Stock - Ready to Ship: see availability
Returnable: see conditions
Shipping from?: see locations Ships in 1 day
Weight: 1.66 lbs UOM: EA

Additional Description


These finished bore sprockets are shaft ready and come complete with keyways and setscrews. The keyways are on center line of the tooth. Bored to size sprockets with ½ inch bores and smaller are stocked with (2) setscrews only.
Material Steel Hub Outside Diameter 2.750 in.
Chain Number 40 Length thru Bore 1.000 in.
Chain Pitch 0.500 in. Hub Recessed For Chain Clearance No
Number of Chain Rows 1 Construction Detail Solid
Number of Teeth 21 Bore Type Bored To Size
Outside Diameter 3.617 in. Finished Bore Size 0.875 in.
Pitch Diameter 3.355 in. Key Way Size 3/16x3/32 in.
Single Strand Tooth Thickness 0.284 in. Set Screw Size 1/4-20X1/4 in.
Hardened Teeth No Set Screw Location (2) Set Screws (1) Over Kw And (1) At 90
Hub Configuration B
Storage Dimension Length 4.313 in. Weight 1.50 lbs.
Storage Dimension Width 4.313 in. Individually Packaged Yes
Storage Dimension Height 1.060 in.