# Boston Gear F842B-45K-B5-M4 Helical Speed Reducer 45:1 Ratio 56C Input Flange - MROSupply.com

***Boston Gear 30267671 F842B-45K-B5-M4 helical speed reducer with 45:1 ratio and 56C input flange. Cast iron housing for general industrial power transmission applications.***



## Product details:

- Catalog number: F842B50SB5M2
- SKU: 2039922
- Price: ***$718.38*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Boston Gear](https://www.mrosupply.com/brands/boston-gear/)
- Category: 
    - [Quill Input Inline Helical Reducers](htts://www.mrosupply.com/speed-reducers/inlineconcentric-speed-reducers/inline-helical-speed-reducers/quill-input-inline-helical-reducers/)
    - [Inline Helical Speed Reducers](htts://www.mrosupply.com/speed-reducers/inlineconcentric-speed-reducers/inline-helical-speed-reducers/)
    - [Inline/Concentric Speed Reducers](htts://www.mrosupply.com/speed-reducers/inlineconcentric-speed-reducers/)
    - [Speed Reducers](htts://www.mrosupply.com/speed-reducers/)
- Unit of measure: each
- Technicall support: contact supplier for technical support on 800-626-2120


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


## Product attributes;

  
- Over 40 different ratios 1.5: 1 - 71:1 double-reduction ratios 36:1 - 250:1 triple-reduction ratios
  

  
- Ratios up to 70: 1 in just two stages means increased efficiency and reduced case size.
  
## Product documents / software:

- [Data Sheet](https://documents.mrosupply.com/product_documents/40/42/40424/p-1485-bg_800b_in-line_helical_em5Xii1.pdf)

## Product's reviews:
- Na40 - Fast shipping!!! Great to do business with.
- 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.
- Finding the right parts. - MRO made it quick and easy.
- Exactly what i needed - Item was exactly what I needed and a perfect fit for my project. Extremely happy.