# Boston Gear 30215917 GB21 16 D.P. 21-Tooth Steel Spur Gear, 14.5° Pressure Angle - MROSupply.com

***Boston Gear 30215917 GB21 steel spur gear with 16 diametral pitch, 21 teeth, and 14.5° pressure angle. Designed for general industrial open gearing applications requiring precise tooth engagement and moderate load capacity. Manufactured from steel for durability in power transmission drives.***



## Product details:

- Catalog number: GB21
- SKU: 35175
- Price: ***$63.31*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Boston Gear](https://www.mrosupply.com/brands/boston-gear/)
- Category: 
    - [Change Gears](htts://www.mrosupply.com/gears-gear-racks/gears/change-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: 0.101 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): 0. 750
  

  
- Face Width (IN): 0. 500
  

  
- Hub Diameter (IN): 0
  

  
- Outside Diameter (IN): 1. 440
  

  
- Pitch Diameter (IN): 1. 313
  

  
- Speed: 1800 RPM
  

  
- Torque Rating (LB IN): 58. 4 @1800 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 30215917 GB21 16 D.P. 21-Tooth Steel Spur Gear, 14.5° Pressure Angle - MROSupply.com`:
- [Linn Gear 16CG21 16 DP steel change gear with 21 teeth and 14.5° pressure angle. Precision-machined for reliable power transmission in gear trains. Suitable for use in machine tools and industrial equipment.](https://www.mrosupply.com/products/555632/as-markdown/)

## Product's reviews:
- Shaft output is reversible - Description should say that shaft is reversible. Other than that perfect fit. Good communication from the shipping folks.
- Right parts - very very please thank you
- 80 tooth change gear - Exact part for the machine, deliverd quickly, and priced right!
- Finding the right parts. - MRO made it quick and easy.