# Boston Gear 30223156 F621B-4-B9 Helical Speed Reducer 4:1 Ratio 180TC Input Flange - MROSupply.com

***Boston Gear 30223156 F621B-4-B9 helical speed reducer with 4:1 ratio and 180TC input flange. Cast iron housing for general industrial power transmission applications requiring reliable speed reduction.***



## Product details:

- Catalog number: F621B-4-B9
- SKU: 41100
- Price: ***$3,359.89*** 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: 30.002 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:
- Exactly what i needed - Item was exactly what I needed and a perfect fit for my project. Extremely happy.
- 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.
- Finding the right parts. - MRO made it quick and easy.
- Fast shipping - I ordered this part hoping it would arrive within 2 weeks because I had an emergency situation with an employee waiting to repair a piece of equipment at a customer’s location. The part actually arrived halfway across the country in 5 days including the weekend. MRO processed, packaged and shipped it with incredible speed. Thanks again!