Shop All Chain Sprockets
Martin Sprocket & Gear
Spk Roller B Stainless, 50B21SS
Mfr # 50B21SS
Zoro # G2457774
product price: $407.99
/ea
Free Shipping & Returns
$407.99
Free Shipping on orders over $50
after youÂ
Free 30-Day Returns
Key Features
- Outside Dia. 0.343
- Bore Type Reboreable
- Pitch 0.625
- Max. Bore (In.) 2
- Number of Teeth 21
Get 10% Off Your First Order
Real Support From Real People
Contact Our U.S.-Based teams
Free 30-Day Returns
Return Policy
Accepted Payment Options
![paypal](https://www.zoro.com/static/assets/img/base/icons/paypal-81447b0e73.png)
Product Information
- Brand Martin Sprocket & Gear
- MFR # 50B21SS
- Zoro # G2457774
- UPC # 697950065496
- Country of Origin United States
- Category Chain Sprockets
Dimensions
Outside Dia. | 0.343 |
Pitch Dia. | 4.194 |
Hub Dia. (In.) | 3 |
Length through Bore (In.) | 1 |
Outside Dia. (In.) | 4.522 |
Roller Width | 0.375 |
Chain Roller Dia. | 0.4 |
Storage Height | 1 |
Storage Width | 4.722 |
Storage Length | 4.722 |
Caliper Diameter | 3.782 |
Restrictions
- WARNING: Cancer and Reproductive Harm For more information go to www.P65Warnings.ca.gov
Ratings & Reviews
3 Reasons You Can Count On Us
Supplies for every job.
10 million items and the exact one you need.
When you need it fast, count on Zoro!
2 million products ship in 1 day.
Stretch your budget further.
Everyday low prices on the brands you love.
Explore More Products
- D&D 87" Outside Length, 1 1/2" Top Width, 2 Ribs (2/B84)
- DAYTON 2/BX120 Banded V-Belt, 123" Outside Length, 21/32" Top Width, 2 Ribs (54TY13)
- PARKER Hydraulic Motor, 14.5 Cu. In./Rev. (TG0240AS030AAAA)
- SPEEDAIRE Air Cylinder, 4 in Bore, 36 in Stroke, NFPA Double Acting (5VLR9)
- MARTIN SPROCKET & GEAR BS SABERTOOTH - DIRECT BORE (35BS21HT 1)
- MARTIN SPROCKET & GEAR BS FINISHED BORE - 80 CHAIN AND BELOW - DIRECT BORE (40BS15 5/8)
- MARTIN SPROCKET & GEAR (2517) Spk Roller Double Tb, D50CTB42 (D50CTB42)
- MARTIN SPROCKET & GEAR Spk Roller Torque Limiter, 80TTA26-70 (80TTA26-70)
- MARTIN SPROCKET & GEAR (2517) Spk Roller Tb Saber, 80BTB20H (80BTB20H)
- MARTIN SPROCKET & GEAR Spk Roller B, 60B54 (60B54)
- TRITAN Finished Bore with Keyway & SS Bore Roller Chain Sprocket, 60 Chain Size, 14 # of Teeth (60BS14H X 3/4)
- Martin Sprocket & Gear Chains & Chain Sprockets