Product Description
The Martin 50B22 is a Type B hub, single-strand roller chain sprocket designed for use with ANSI #50 roller chain (5/8" pitch). It features 22 teeth, a stock bore diameter of 3/4" that is reboreable up to 2" maximum, and is manufactured from high carbon steel to meet or exceed ANSI standards. The B-hub design includes a hub extension on one side, providing stability and allowing the bore to be enlarged to accept a keyway and setscrews for secure shaft attachment. Designed for horizontal shaft orientation with a nominal drive ratio of 1:1 when paired with a matching sprocket.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Martin |
| Model / Part Number | 50B22 |
| Product Type | Roller Chain Sprocket |
| Chain Number | #50 |
| Chain Pitch | 5/8" (0.625 in) |
| Number of Teeth | 22 |
| Hub Type | B (Hub One Side) |
| Number of Strands | Single (1) |
| Stock Bore Diameter | 0.750 in (3/4") |
| Maximum Bore Diameter | 2.000 in |
| Bore Type | Plain / Reboreable |
| Outside Diameter (OD) | 4.722 in |
| Pitch Diameter | 4.3917 in |
| Caliper Diameter | 3.9917 in |
| Hub Diameter | 3.000 in |
| Length Through Bore (LTB) | 1.000 in |
| Tooth Width (Face Width) | 0.343 in |
| Material | High Carbon Steel |
| Hardened Teeth | No (Non-Hardened) |
| Surface Treatment | Protective Coating |
| Sprocket Type | Standard ANSI Roller |
| Standards Met | ANSI B29.1 |
We warranty all items for 30 days from date of purchase.
Other Details
We warranty all items for 30 days from date of purchase. If you experience any issues with your item within this period, please contact us and we will work with you to resolve the problem. This warranty covers defects in functionality but does not cover damage caused by misuse, improper installation, or normal wear and tear.Product Videos
Custom Field
GTIN 679523686161
Manufacturer Martin
Part Number 50B22
Shelf GS-33
Model 50B22
MPN 50B22
Type Roller Chain Sprocket
