# Boston Gear 30223155 621B-4 Helical Speed Reducer 4:1 Ratio - MROSupply.com

***Boston Gear 30223155 621B-4 helical speed reducer with 4:1 ratio. Cast iron housing for general industrial power transmission applications. Compact inline design for space-constrained installations.***



## Product details:

- Catalog number: 621B-4
- SKU: 41099
- Price: ***$2,714.49*** 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: 23.002 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:
- Excellent customer service - The couplings are just what they are supposed to be. But I wanted to comment on MRO. This was my first order with them and I was extremely surprised at how well the company is run. I will be doing more business with them in the future.
- Shaft output is reversible - Description should say that shaft is reversible. Other than that perfect fit. Good communication from the shipping folks.
- 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.
- 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!