# Grove Gear Narrow Housing IronMan NH-BM821-25-R-56 NH8210054.00 25:1 Cast Iron Single-Reduction Worm Gear Speed Reducer 2.06" Center Distance 56C Input Right-Hand Solid Output - MROSupply.com

***Grove Gear NH-BM821-25-R-56 (catalog NH8210054.00) 25:1 ratio right angle cast iron single-reduction worm gear speed reducer with 2.06" center distance. Features 56C motorized flexible coupling input, 0.625" input bore, and 0.875" right-hand solid output shaft. Rated 1.333 input HP at 1750 RPM, 985 in-lb output torque. Narrow Housing IronMan series with blue painted finish and Viton shaft seals.***



## Product details:

- Catalog number: NH8210054.00
- SKU: 1344474
- Price: ***$939.66*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Electra/Grove Gear](https://www.mrosupply.com/brands/electragrove-gear/)
- Category: 
    - [3-Piece Coupled Input Output Shaft Right Worm Gear](htts://www.mrosupply.com/speed-reducers/right-angle-speed-reducers/right-angle-worm-gear-speed-reducers/3-piece-coupled-input-worm-gear-reducers/3-piece-coupled-input-output-shaft-right-worm-gear/)
    - [3-Piece Coupled Input Worm Gear Reducers](htts://www.mrosupply.com/speed-reducers/right-angle-speed-reducers/right-angle-worm-gear-speed-reducers/3-piece-coupled-input-worm-gear-reducers/)
    - [Right Angle Worm Gear Speed Reducers](htts://www.mrosupply.com/speed-reducers/right-angle-speed-reducers/right-angle-worm-gear-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: 26.000 lb
- UPC: 690310061732
- Technicall support: contact supplier for technical support on 800-626-2120


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


## Product attributes;

  
- Assembly: BM-R
  

  
- Center Distance: 2.1 In.
  

  
- Center distance (in): 2.06
  

  
- Center Distance Range: 1" thru 3.25"
  

  
- Gear Drive Reductions: Single
  

  
- Gear Type: Worm
  

  
- H-Tap Size: 5/16 - 18 UNC
  

  
- Housing material: Cast iron
  

  
- HP Range: 1 to 1-1/2 (< 2)
  

  
- Input Bore (C Face): 0.625
  

  
- Input Diameter (in): 0.625
  

  
- Input Flange: 56C
  

  
- Input HP: 1.333
  

  
- Input HP @ 1750 RPM: 1.333
  

  
- Input Keyway (C Face): 3/16 x 3/32
  

  
- Input RPM: 1750
  

  
- Input Style: 3-Piece Coupled
  

  
- Max OHL (Output Shaft): 775
  

  
- Max Thrust Load (Output Shaft): 1144
  

  
- Model Code: BM821
  

  
- Motor Frame Size: 56
  

  
- Mounting Style: Base
  

  
- No. of Gear Reductions: Single
  

  
- Output: Right
  

  
- Output Diameter (in): 0.875
  

  
- Output HP: 1.094
  

  
- Output Key: 3/16 X 1.50
  

  
- Output RPM: 70
  

  
- Output Shaft Assembly Code: R
  

  
- Output Shaft Direction: Right
  

  
- Output Shaft Orientation: R
  

  
- Output Style: R
  

  
- Output Torque: 985
  

  
- Output Torque Range: 500 to 1000 in lbs
  

  
- Output type: Solid Shaft
  

  
- Overhung Load: 1210
  

  
- Paint/Coating: Blue
  

  
- Product Line: NH Series - Ironman Narrow Housing Worm Gear Reducers
  

  
- Product Type: Right Angle
  

  
- Ratio: 25 to 1
  

  
- Ratio Range: 25-1
  

  
- Reducer: Worm - Right Angle
  

  
- Reducer Style: Worm - Right Angle
  

  
- Reducer Type: Single
  

  
- Series: NH Series - Ironman Narrow Housing Worm Gear Reducers
  

  
- Series Code: NH
  

  
- Series Style: NH-BM-R
  

  
- Service Factor: 1
  

  
- Shaft Seal Material: Viton
  

  
- Size: 56C
  

  
- TAP Depth: 0.63
  

  
- Thrust Rating - output shaft: 1144
  
## Product documents / software:

- [Catalog](https://documents.mrosupply.com/product_documents/13/44/1344580/Grove_Gear_NH821000100_Catalog_o0QdWLM.pdf)
- [Instruction/Installation Manual](https://documents.mrosupply.com/product_documents/13/41/1341843/Grove_Gear_EL813001400_Manual_GZR8HGy.pdf)
- [NH-BM821-25-R-56_dimensions](https://documents.mrosupply.com/product_documents/NH/NH8130037.00/BM-NH.pdf)
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## Product's reviews:
- Replacement for an obsolete gearbox - We needed this gearbox as a replacement for an obsolete model made by Grove Gear back in the 90&#39;s. Needed to call the company to find out the equivalent and they directed me towards MRO. If this one will last as long as its predecessor I&#39;ll be retired by the time it will need to be replaced again.
- Gear box - excellent service, fast, easy, and customer service outstanding,
if any changes they call and let you know,
- Gearbox gold - Great Gearbox, great price, free shipping!
- Right on - Took a bit to ship but after it shipped I got it fast. Right product.