Product Description
The Tsubaki HDS50A20 is a double-strand, hardened-tooth, Type A flat-plate roller chain sprocket designed for ANSI #50 (5/8" pitch) roller chain. The "H" prefix denotes hardened teeth (Rockwell C35 minimum) for superior wear resistance, while the "A" designation indicates a hubless plate-style body. This sprocket is produced from carbon steel with a stock bore of 3/4" and is suitable for demanding power transmission applications where extended service life and chain engagement precision are required.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Tsubaki (U.S. Tsubaki Power Transmission) |
| Model / Part Number | HDS50A20 |
| Product Type | Roller Chain Sprocket |
| Chain Number (ANSI) | #50 |
| Chain Pitch | 5/8" (0.625 in) |
| Number of Strands | Double (2-Strand) |
| Number of Teeth | 20 |
| Hub Type | Type A – Flat Plate (No Hub) |
| Outside Diameter | 4.321 in |
| Pitch Diameter | 3.995 in |
| Stock Bore Diameter | 3/4 in (0.750 in) |
| Sprocket Thickness (Tooth Width) | 0.343 in (nominal) |
| Hardened Teeth | Yes – Rockwell C35 Minimum |
| Material | Carbon Steel |
| Chain Inside Width | 0.375 in |
| Chain Roller Diameter | 0.400 in |
| Bore Type | Stock / Plain Bore (reborable) |
| Standard | ANSI / ASME 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
Country/Region of Manufacture China
Manufacturer Tsubaki
Part Number HDS50A20
Shelf GS-38
Model HDS50A20
MPN HDS50A20
Type Roller Chain Sprocket
