# Boston Gear 30223656 F643B-40-B7 Helical Speed Reducer 40:1 Ratio 140TC Input Flange - MROSupply.com

***Boston Gear 30223656 F643B-40-B7 helical speed reducer with 40:1 ratio and 140TC input flange. This cast iron unit is designed for general industrial power transmission applications requiring reliable speed reduction.***



## Product details:

- Catalog number: F643B-40-B7
- SKU: 41389
- Price: ***$8,126.86*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Boston Gear](https://www.mrosupply.com/brands/boston-gear/)
- Category: 
    - [Right Angle Helical/Spiral Bevel Speed Reducers](htts://www.mrosupply.com/speed-reducers/right-angle-speed-reducers/right-angle-helicalspiral-bevel-speed-reducers/)
    - [Right Angle Speed Reducers](htts://www.mrosupply.com/speed-reducers/right-angle-speed-reducers/)
    - [Speed Reducers](htts://www.mrosupply.com/speed-reducers/)
- Unit of measure: each
- Weight: 94.000 lb
- Technicall support: contact supplier for technical support on 800-626-2120


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


## Product attributes;

  
- Ratios from 1.6: 1 to 160:1 (23 increments)
  

  
- Standards: ISO 9001
  
## Product documents / software:

- [Data Sheet](https://documents.mrosupply.com/product_documents/41/00/41007/p-1485-bg_600b-series-helical_bpEi8qZ.pdf)

## Product's reviews:
- 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.
- Boston gear order - MRO had the items that I needed. I ordered them and they were shipped faster than I expected. It was a pleasant experience all around.
- Good seller - Catalogue item, good price, fast delivery = good seller
- Good quality, fast delivery. - Easy ordering, don't have a minimum quantity, and fast delivery. Very satisfied with order.