# Martin 140B21 Type B Plain Bore Roller Chain Sprocket #140 Chain 1-3/4" Pitch 21 Teeth Steel - MROSupply.com

***Martin 140B21 Type B plain bore roller chain sprocket for #140 chain (1-3/4" pitch), 21 teeth, steel construction. Outside diameter: 12.660". Single hub design for re-boring to required shaft size. Suitable for heavy-duty industrial power transmission applications.***



## Product details:

- Catalog number: 140B21
- SKU: 259400
- Price: ***$525.01*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Martin Sprocket](https://www.mrosupply.com/brands/martin-sprocket/)
- 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: 38.700 lb
- Technicall support: contact supplier for technical support on 323-728-8117


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


## Product attributes;

  
- Material: Steel
  

  
- Number Of Teeth: 21
  

  
- Outside Dia: 12.660"
  

  
- Pitch: 1.750 in.
  

## Suggested products:
- [Martin 140B21 Type B plain bore roller chain sprocket for #140 chain (1-3/4" pitch), 21 teeth, steel construction. Outside diameter: 12.660". Single hub design for re-boring to required shaft size. Suitable for heavy-duty industrial power transmission applications.](https://www.mrosupply.com/products/259400/as-markdown/)
- [Martin 140A15 Type A plain bore roller chain sprocket for #140 chain with 1-3/4" pitch, 15 teeth, and 9.283" outside diameter. Steel flat plate design with no hub, suitable for light-duty applications where weight is a concern.](https://www.mrosupply.com/products/259344/as-markdown/)
- [Martin 140A12 Type A plain bore roller chain sprocket for #140 chain, 1-3/4" pitch, 12 teeth, 7.581" outside diameter. Flat plate design with no hub, steel construction. Suitable for applications requiring a lightweight, compact sprocket that can be bored to size.](https://www.mrosupply.com/products/259341/as-markdown/)
- [HKK RC140R1A 140R10 140 single strand standard ANSI roller chain with 1-3/4" pitch, supplied on a 10 ft reel. Solid bushings and rollers, pin diameter 0.500", plate height 1.610", roller width 1", plate thickness 0.219", roller diameter 1.000". Average ultimate strength 48,800 lbs, maximum allowable load 11,740 lbs. ANSI B29.1 compliant, made in Japan.](https://www.mrosupply.com/products/2265731/as-markdown/)
- [Martin 140A11 Type A plain bore roller chain sprocket for #140 chain with 1-3/4" pitch, 11 teeth, and 7.010" outside diameter. Steel construction with flat plate design and no hub. Suitable for applications requiring a lightweight, simple sprocket configuration.](https://www.mrosupply.com/products/259340/as-markdown/)

## Product's reviews:
- Great prices and quality products - Your products are not only affordable, but they are also priced very fairly and competitively & always ship out pretty quickly. You have gained a new regular customer and stolen us from one of our regular distributors without even trying. Thank you for being awesome! Not to mention the free shipping over $100 perk is super appreciated as we not only are saving money per item, but we are also able to buy in bulk without the additional burden of freight/shipping costs.
THANK YOU!! :)
- Free freight ! - Easy to do business with
- Nice sprocket - sprocket is very nice.
- Perfect - Perfect replacement part, Good purchase experience. I would use MRO again.