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Worm
Grove Gear NH-B821-20-D
Grove Gear NH Series - Ironman Narrow Housing Worm Gear Reducers Cast Iron Single-Reduction Worm Reducer
Product Type
Right Angle
Series
NH Series - Ironman Narrow Housing Worm Gear Reducers
Output Style
D
H Depth
0.63
Need help confirming fit? Send us the current part number, shaft size, housing photo, or equipment model.
Product Overview
- Rugged cast iron housings, covers, and flanges provide superior strength and rigidity.
- 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.
- O-rings on all bearing covers, eliminating gaskets, sealants and leaks.
- 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.
- 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.
- 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.
- Output Style
- D
- H Depth
- 0.63
- O
- 2.66
- No. of Gear Reductions
- Single
- Center Distance (in)
- 2.06
- Mounting Style
- Base
- A
- 2.5
- Model Code
- B821
- Output HP
- 1.338
- U
- 0.625
- O(asterisk)
- 2.45
- Input HP @ 1750 RPM
- 1.584
- B
- 4.5
- HP Range
- 1 to 1-1/2 (< 2)
- Input RPM
- 1,750
- F
- 1.88
- Reducer Style
- Worm - Right Angle
- Input Diameter (in)
- 0.625
- Output Key
- 3/16 X 1.50
- Max Thrust Load (Output Shaft)
- 1144
- M
- 1.76
- Input Keyway
- 3/16 X 1.38
- N
- 4.34
- Output Shaft Orientation
- LR
- Output RPM
- 87
- K
- 1.63
- Ratio Range
- 20:1
- Service Factor
- 1
- H Tap Size
- 5/16 - 18 UNC
- J
- 3.25
- Center Distance Range
- 1" thru 3.25"
- Series Style
- NH-B-D
- Assembly
- B-D
- C
- 6
- Output Diameter (in)
- 0.875
- Reducer
- Worm - Right Angle
- Overhung Load
- 1,175
- Input HP
- 1.584
- Shaft Seal Material
- Viton
- T
- 0.875
- I
- 3.61
- Product Type
- Right Angle
- L
- 4.82
- Cd
- 2.06
- Ratio
- 20:1
- G
- 0.94
- Output Torque Range
- 500 to 1000 in lbs
- D
- 2.31
- Gear Type
- Worm
- Output Shaft Assembly Code
- D
- Product Line
- NH Series - Ironman Narrow Housing Worm Gear Reducers
- Input Style
- Solid Shaft
- Reduction
- Single
- Output Shaft Direction
- Double
- Output Shaft
- Solid Shaft
- Output Torque Rating (in-lb)
- 964
- Housing Material
- Cast Iron
- Overhung Load Rating (Output Shaft(lb))
- 775
Always verify dimensions, load ratings, material, and seal type before ordering.
- Brandi
- Grove Gear
- Mfg. Catalog Numberi
- NH-B821-20-D
- Mfg. Part Numberi
- NH8210029.00
- GDS #i
- GDS-155246
- Categoryi
- Worm
- UPCi
- 690310061480
- Seriesi
- NH Series - Ironman Narrow Housing Worm Gear Reducers
- Series Codei
- NH
Common Questions
How do I get a price for the NH-B821-20-D?
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 NH-B821-20-D, manufacturer article number NH8210029.00. Its UPC is 690310061480.
