# Grove Gear IronMan GR-H842-20-H1-28 GR8420505.28 20:1 Single-Reduction Worm Gear Speed Reducer 4.25" Center Distance Hollow Output Cast Iron - MROSupply.com

***Grove Gear IronMan GR-H842-20-H1-28 (catalog GR8420505.28) 20:1 ratio single-reduction worm gear speed reducer with 4.25" center distance. Cast iron housing, non-flanged hollow output with universal hand, 1.25" input diameter, and 1.75" output diameter. Right-angle design for industrial power transmission applications.***



## Product details:

- Catalog number: GR8420505.28
- SKU: 1334512
- Price: ***$3,640.43*** 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: 
    - [Solid Input Shaft Hollow Bore Output Worm Gear](htts://www.mrosupply.com/speed-reducers/right-angle-speed-reducers/right-angle-worm-gear-speed-reducers/solid-input-shaft-worm-gear-reducers/solid-input-shaft-hollow-bore-output-worm-gear/)
    - [Solid Input Shaft Worm Gear Reducers](htts://www.mrosupply.com/speed-reducers/right-angle-speed-reducers/right-angle-worm-gear-speed-reducers/solid-input-shaft-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: 139.000 lb
- UPC: 690310028001
- Technicall support: contact supplier for technical support on 800-626-2120


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


## Product attributes;

  
- Assembly: H-H1
  

  
- Bore Code: 28
  

  
- Center Distance: 4.2 In.
  

  
- Center distance (in): 4.25
  

  
- Center Distance Range: Above 3.25"
  

  
- Gear Drive Reductions: Single
  

  
- Gear Type: Worm
  

  
- Housing material: Cast iron
  

  
- HP Range: 7-1/2 (< 10)
  

  
- Input Diameter (in): 1.25
  

  
- Input HP: 11.02
  

  
- Input RPM: 2500
  

  
- Input Style: Solid Input Shaft
  

  
- Keyway: 1/4 X 2.50
  

  
- Model Code: H842
  

  
- Mounting Style: Shaft Mount
  

  
- No. of Gear Reductions: Single
  

  
- Output: Hollow
  

  
- Output Diameter (in): 1.750
  

  
- Output Hollow Shaft Diameter (in): 1.750
  

  
- Output HP: 8.458
  

  
- Output Key: 3/8 x 3.00
  

  
- Output RPM: 87
  

  
- Output Shaft Assembly Code: H1
  

  
- Output Shaft Orientation: H1
  

  
- Output Style: H1
  

  
- Output Torque: 6092
  

  
- Output Torque (lb-in): 4999
  

  
- Output Torque Range: 5000 to 10000 in lbs
  

  
- Output type: Hollow bore
  

  
- Overhung Load Rating (Output Shaft(lb)): 3320
  

  
- Paint/Coating: Blue
  

  
- Product Line: GR Series - Ironman Worm Gear Reducers
  

  
- Product Type: Right Angle
  

  
- Ratio: 20 to 1
  

  
- Ratio Range: 20-1
  

  
- Reducer: Worm - Right Angle
  

  
- Reducer Style: Worm - Right Angle
  

  
- Reducer Type: Single
  

  
- Series: GR Series - Ironman Worm Gear Reducers
  

  
- Series Style: GR-H-H1
  

  
- Service Factor: 1
  

  
- Shaft Seal Material: Viton
  

  
- Thrust Rating - output shaft: 2533
  
## Product documents / software:

- [Catalog](https://documents.mrosupply.com/product_documents/13/35/1335389/Grove_Gear_GR842051228_Catalog_xQtksfM.pdf)
- [Instruction/Installation Manual](https://documents.mrosupply.com/product_documents/13/41/1341843/Grove_Gear_EL813001400_Manual_GZR8HGy.pdf)

## 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.
- Coach - Timely delivery in an untimely world.
- Gear box - excellent service, fast, easy, and customer service outstanding,
if any changes they call and let you know,
- Right on - Took a bit to ship but after it shipped I got it fast. Right product.