# U.S. Tsubaki 40B21SS #40 Roller Chain Sprocket, 21 Teeth, Type B Plain Bore - MROSupply.com

***U.S. Tsubaki 40B21SS #40 roller chain sprocket with 21 teeth and Type B single hub. Plain bore (stock bore) for custom machining. Pitch 0.500 in, outside diameter 3.620 in. Suitable for ANSI #40 roller chain drives in industrial power transmission and conveyor applications.***



## Product details:

- Catalog number: 40B21SS
- SKU: 396904
- Price: ***$186.08*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [U.S.Tsubaki](https://www.mrosupply.com/brands/ustsubaki/)
- Category: 
    - [Type B Plain Bore Sprockets](htts://www.mrosupply.com/chains-sprockets/sprockets/roller-chain-sprockets/plain-bore-sprockets/type-b-plain-bore-sprockets/)
    - [Plain Bore Sprockets](htts://www.mrosupply.com/chains-sprockets/sprockets/roller-chain-sprockets/plain-bore-sprockets/)
    - [Roller Chain Sprockets](htts://www.mrosupply.com/chains-sprockets/sprockets/roller-chain-sprockets/)
    - [Sprockets](htts://www.mrosupply.com/chains-sprockets/sprockets/)
    - [Chains & Sprockets](htts://www.mrosupply.com/chains-sprockets/)
- Unit of measure: each
- Weight: 1.680 lb
- Technicall support: contact supplier for technical support on 800 323 7790


## Product images:
- https://static.mrosupply.com/images/noimage.webp


## Product attributes;

  
- Bore: C2080
  

  
- Chain Size: #40
  

  
- Hub Diameter: 2-3/4 in
  

  
- Keyway Size: 3/16 x 3/32 in
  

  
- Length Through Bore: 1 in
  

  
- Material: 304 Stainless Steel
  

  
- O.D.: 3.620 in
  

  
- Pitch: 0.500 in
  

  
- Pitch Diameter: 3.355 in
  

  
- Screw Size: 1/4 in
  

  
- Teeth: 21
  

  
- Type: Plain Bore Type B
  

## Alternate products to `U.S. Tsubaki 40B21SS #40 Roller Chain Sprocket, 21 Teeth, Type B Plain Bore - MROSupply.com`:
- [Martin 40B21SS Type B plain bore roller chain sprocket for #40 chain (1/2" pitch), 21 teeth, stainless steel (304 SS) construction. Hub on one side for re-boring. Outside diameter: 3.618".](https://www.mrosupply.com/products/261967/as-markdown/)
- [Linn-Gear 40B21SS Stainless Steel Sprocket H1](https://www.mrosupply.com/products/571077/as-markdown/)

## Product's reviews:
- Sprocket - look good and very fast shipping
- Tsbsb05 shock relay - Had no idea of Miro supply and after exhaustive search on internet came up with Miro Supply as having the item I needed and the price was well below others that I had found for the same item. It arrived in a good timely manner and was as a new item that was described and worked fine and got my smoker back up and running again. Will look at this site for future items that I may need. Thank You and Saved Money Also
- Engineer - EXACTLY WHAT WE ORDER EVERY TIME. Quick delivery. MRO is the best!.