NEW MARTIN 50BS24 1 1/8

The Martin Sprocket & Gear 50BS24 1 1/8 is a Bored-to-Size (Type BS) single-pitch roller chain sprocket designed for ANSI #50 roller chain with a 5/8-inch pitch. It features a 1-1/8-inch finished bore with a keyway and two set screws, making it shaft-ready for direct installation. Manufactured from high-carbon steel for strength and durability, this B-hub sprocket includes a single hub extension on one side for stability in power transmission drive applications. Designed for horizontal shaft orientation with a nominal drive ratio of 1:1.
Specification
Value
Brand
Martin Sprocket & Gear
Model / Part Number
50BS24 1 1/8
Product Type
Roller Chain Sprocket
Sprocket Type / Hub Type
Type BS – B-Hub (Hub One Side), Bored-to-Size
Chain Number
#50 (ANSI Roller Chain)
Chain Pitch
5/8 in (0.625 in)
Number of Teeth
24
Number of Strands
Single (1)
Bore Diameter
1-1/8 in (1.125 in)
Outside Diameter (OD)
5.122 in
Pitch Diameter
4.788 in
Hub Outside Diameter
3.00 in (3-1/2 in per some catalog data)
Length Through Bore
1-1/4 in (1.25 in)
Keyway Size
1/4 x 1/8 in
Set Screw Size
5/16-18 x 5/16 in (2 set screws)
Bore Type
Finished Bore with Keyway
Hardened Teeth
No
Material
High Carbon Steel
Standards
ANSI
We warranty all items for 30 days from date of purchase.