# Boston Gear L121Y 30216947 Spur Gear 12 D.P. 21 Teeth 20 Degree Pressure Angle - MROSupply.com

***Boston Gear 30216947 L121Y spur gear with 12 diametral pitch, 21 teeth, and 20 degree pressure angle. Suitable for general industrial open gearing applications requiring precise tooth engagement and load distribution.***



## Product details:

- Catalog number: L121Y
- SKU: 36008
- Price: ***$69.64*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Boston Gear](https://www.mrosupply.com/brands/boston-gear/)
- Category: 
    - [Miter Gears](htts://www.mrosupply.com/gears-gear-racks/gears/miter-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: 0.401 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. 625
  

  
- Diametral Pitch: 12
  

  
- Material: & Condition STEEL-UNHARDENED Torque Rating (LB-IN) 38
  

  
- Mounting Distance: 1. 750
  

  
- Outside Diameter (IN): 1. 870
  

  
- Pitch Diameter (IN): 1. 750
  

  
- Speed: 1800 RPM
  

  
- Torque Rating (LB-IN): 38. 5 @1800 RPM MAX
  
## Product documents / software:

- [Catalog Product Section](https://documents.mrosupply.com/product_documents/30/30626/p-1930-bg_miter-and-bevel-gears_NiLLoCi.pdf)
- [Engineering Data](https://documents.mrosupply.com/product_documents/30/30626/1930-bg_engineering-info-miter-and-bevel-gears_45TyihF.pdf)
- [Full Catalog](https://documents.mrosupply.com/product_documents/57/57878/p-1930-bg.pdf)

## Product's reviews:
- Needle gear - I'm very happy with my purchase. I found exactly what I was looking for and I received it in a couple days. I will recommend your company to others and I hope I can deal with you again. Thank you!
- Quality - very high quality. using these gears in a model 9 cylinder radial engine with a 1"
bore. about 8 h.p. , for oil pump a scavenge pump timing gears and distributor . very good quality gears.
- Gear box oil - This has been very hard to find. It’s the oil spec’ed for my 1950s Rockwell wedge bed planer gear box. I haven’t found it anyplace else.
- Change gears - Found what I needed, fair price,...fast delivery....All Good!! Good job MRO Supply!