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Worm
Grove Gear GRG-HM821-20-H1-56-16
Grove Gear GR Series - Ironman Worm Gear Reducers Cast Iron Single-Reduction Worm Reducer
Product Type
Right Angle
Series
GR Series - Ironman Worm Gear Reducers
Motor Frame Size
56
J
4.75
Need help confirming fit? Send us the current part number, shaft size, housing photo, or equipment model.
Product Overview
- One-piece cast iron housings with single output cover design, CNC machined for precise component fit and alignment.
- Factory-filled with premium Mobil Glygoyle 460 polyalkalene glycol lubricant.
- Large oil capacity provides positive splash lubrication and superior cooling capability.
- Viton® double lip seals provide extended life through increased resistance to high temperature, abrasion and chemicals.
- The unique quill seal guard protects the input seal from damage during motor installation.
- Bronze worm gear chill cast from high quality bronze for maximum strength, lubricity and superior life.
- Oversized high-speed bearings, positively retained for frequent reversing and start/stop cycles.Tapered roller bearings on output shaft for high overhung and thrust load capacities.
- All units are 100% run and leak tested at the factory to insure that you receive the highest quality product.
- Ultimate application flexibility with all-angle mounting provisions, the widest selection of accessory bases and flanges and the largest selection of stock reducer styles.
- Mounting dimensions are interchangeable with most industry standard reducers.
- J
- 4.75
- AD
- 4.99
- Cd
- 2.06
- Input HP
- 1.584
- Output HP
- 1.338
- BE
- 0.38
- Input Style
- Flexible Coupling Input
- C
- 6.38
- AE1
- 0.61
- Series Style
- GRG-HM-H1
- Mounting Style
- Shaft Mount
- AB
- 5.43
- Output Style
- H1
- U
- 0.625
- AE2
- 0.4
- L
- 4.82
- V
- 1.94
- BD
- 6.5
- AG
- 6
- Frame Size
- 56C
- D
- 2.28
- I
- 3.61
- Output Shaft Assembly Code
- H1
- AA
- 7.24
- AJ
- 5.88
- Series Type
- Cast Iron 800 Worm Gear Reducers
- Reducer Style
- Worm - Right Angle
- G
- 1.44
- AF
- 0.75
- Output Key
- 1/4 X 2.50
- Output Shaft Orientation
- H1
- LM
- 7.07
- BF
- 0.41
- B
- 5.8
- Input RPM
- 1,750
- Output RPM
- 87
- R
- 0.75
- F
- 3
- AK
- 4.5
- Input Diameter (in)
- 0.625
- Gear Type
- Worm
- Output Diameter (in)
- 1
- Input Keyway
- 3/16 X 1.38
- Reducer
- Worm - Right Angle
- Assembly
- HM-H1
- Center Distance (in)
- 2.06
- Input HP @ 1750 RPM
- 1.584
- T
- 1
- Ratio
- 20:1
- Product Line
- GR Series - Ironman Worm Gear Reducers
- Motor Frame Size
- 56
- Product Type
- Right Angle
- Max Thrust Load (Output Shaft)
- 1144
- Model Code
- HM821
- Input Keyway (C Face)
- 3/16 x 3/32
- Center Distance Range
- 1" thru 3.25"
- No. of Gear Reductions
- Single
- Shaft Seal Material
- Viton
- Input Bore (C Face)
- 0.625
- Ratio Range
- 20:1
- Service Factor
- 1
- HP Range
- 1HP to 1-1/2HP (< 2)HP
- Output Torque Range
- 500 to 1000 in lbs
- Reduction
- Single
- Output Shaft Direction
- H1
- Housing Material
- Cast Iron
- Overhung Load Rating (Output Shaft(lb))
- 1,175
- Output Shaft
- Hollow Bore
- Output Torque Rating (in-lb)
- 964
Always verify dimensions, load ratings, material, and seal type before ordering.
- Brandi
- Grove Gear
- Mfg. Catalog Numberi
- GRG-HM821-20-H1-56-16
- Mfg. Part Numberi
- GRG8210517.16
- GDS #i
- GDS-153242
- Categoryi
- Worm
- UPCi
- 690310038000
- Bore Codei
- 16
- Series Codei
- GRG
- Seriesi
- GR Series - Ironman Worm Gear Reducers
Common Questions
How do I get a price for the GRG-HM821-20-H1-56-16?
This part is quoted individually. Request a quote from this page and our sales team will respond with current pricing and availability.
Is this a genuine Grove Gear part?
Yes. GDS Supply supplies the genuine Grove Gear GRG-HM821-20-H1-56-16, manufacturer article number GRG8210517.16. Its UPC is 690310038000.
