# Boston Gear 30215197 NO21B 3 D.P. 21-Tooth Steel Spur Gear, 14.5° Pressure Angle - MROSupply.com

***Boston Gear 30215197 NO21B steel spur gear with 3 diametral pitch, 21 teeth, and 14.5-degree pressure angle. Designed for general industrial open gearing applications requiring moderate load capacity and smooth operation.***



## Product details:

- Catalog number: NO21B
- SKU: 35077
- Price: ***$1,099.16*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Boston Gear](https://www.mrosupply.com/brands/boston-gear/)
- Category: 
    - [External Tooth Spur Gears](htts://www.mrosupply.com/gears-gear-racks/gears/spur-gears/external-tooth-spur-gears/)
    - [Spur Gears](htts://www.mrosupply.com/gears-gear-racks/gears/spur-gears/)
    - [Gears](htts://www.mrosupply.com/gears-gear-racks/gears/)
    - [Gears & Gear Racks](htts://www.mrosupply.com/gears-gear-racks/)
- Unit of measure: each
- Weight: 30.501 lb
- Technicall support: contact supplier for technical support on 800-626-2120


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


## Product attributes;

  
- Bore Diameter (IN): 1. 313
  

  
- Face Width (IN): 3. 000
  

  
- Hub Diameter (IN): 0. 00
  

  
- Pitch Diameter (IN): 7. 000
  

  
- Speed: 300 RPM
  

  
- Torque Rating (LB IN): 10554 @ 300 RPM MAX
  
## Product documents / software:

- [Catalog Product Section](https://documents.mrosupply.com/product_documents/38/38846/p-1930-bg_spur-gears_XPDPy70.pdf)
- [Engineering Data](https://documents.mrosupply.com/product_documents/38/38846/p-1930-bg_engineering-info-spur-gears_Zlip3tk.pdf)
- [Full Catalog](https://documents.mrosupply.com/product_documents/57/57878/p-1930-bg.pdf)
## Alternate products to `Boston Gear 30215197 NO21B 3 D.P. 21-Tooth Steel Spur Gear, 14.5° Pressure Angle - MROSupply.com`:
- [Martin S321 steel spur gear with 3 diametral pitch, 21 teeth, and 14.5-degree pressure angle. Outside diameter 7.666". Stock spur gear for power transmission applications. Compatible with other 14.5-degree PA gears.](https://www.mrosupply.com/products/251368/as-markdown/)

## Product's reviews:
- Finding the right parts. - MRO made it quick and easy.
- Speed reducer purchase - The purchase was easy it did take two purchase until we got the correct part I guess it was a fault on both parts as we were looking at the wrong part number, but overall the purchase was good part fit perfectly. Thanks for your support.
- Good seller - Catalogue item, good price, fast delivery = good seller
- Right parts - very very please thank you