Skip to content Skip to navigation menu
Boston GearHF721-40-B5-H-P20

HF721-40-B5-H-P20

700 Series Bostmount C-Face Quilled Reducer
Item #101795718
  • 2 1/16" Center Distance
  • 20:1 Ratio
  • 56C Frame
  • C-Face Quilled Input
  • Hollow Output
  • Universal Worm Position
  • No Lubricant
  • Cast Iron
+ Show More + Show Less
Boston GearHF721-40-B5-H-P20
Price Unavailable
Price Unavailable
Pricing is unavailable at this time. Please contact Customer Service for assistance.
Online Ordering Restricted
Please contact Customer Service for assistance.
Contact Customer Service
    Shipment Options
  • 2 1/16" Center Distance
  • 20:1 Ratio
  • 56C Frame
  • C-Face Quilled Input
  • Hollow Output

features

  • Large oil reservoir provides efficient heat dissipation and lubrication for longer life
  • Housing is straddle milled top and bottom for precise alignment
  • Internal baffles ensure positive, leak-free venting
  • Rugged housing fabricated of fine-grained cast iron for maximum strength and greater precision during worm and gear alignment
  • Bronze worm gear is straddle mounted between heavy-duty tapered roller bearings to increase thrust and load capacities on size 713 to 760
  • High strength steel output shaft ensures capacity for high torque
  • Pipe plugs allow easy fill, level and drain in any mounting position
  • Super finished oil seal diameters on both input and output shafts extend seal life

caution

  • Must be filled to the proper level with the recommended lubricant for your application before operation
Thermal Input Horsepower @ 1750 RPM N/A
Base to Shaft Center Height w/Low Vert. Base Kit 3.13 in
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Output Torque @ RPM 782 in lb @ 1150 rpm, 892 in lb @ 1750 rpm
Bore Code B5
Use With 721
Center Distance 2 1/16 in
Bolt Centers w/ Std. Base Kit (in) 6 3/8 x 4 11/16
Max. Overhung Load @ 1750 rpm 700 lb/in
Frame Size 56C
Base to Centerline of Output Shaft 2 9/32 in
Fan Cooled No
Family Name HF
Keyway Size 3/16 x 3/32
Base to Shaft Center Height w/Std. Base Kit 4.81 in
Output RPM @ 1750 rpm Input 87.5 rpm
Shaft Assembly Code H
Lubrication None
Bolt Center 5 in x 2 7/8 in
Box Length 6 in
Motor Application General Purpose
Base to Shaft Center Height w/Vert. "J" Base Kit 3.94 in
Housing Material Cast Iron
Output Configuration Hollow Output
Box Height 6 3/8 in
Max. Thrust Load @ 1150 rpm 700 lb/in
Input Configuration C-Face Quilled
Washdown Duty No
Max. Input HP @ 100 rpm 0.11 hp
Output (Shaft or Bore) Size 1 1/4 in
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Base to Centerline of Input Shaft 4 11/32 in
Frame 56C
Box Width 4 45/64 in
Torque Out @ 1750 rpm 892 in lb
Worm Position Universal
Bolt Center Length x Bolt Center Width 5 in x 2 7/8 in
Output RPM @ Input RPM 88 rpm @ 1750 rpm
HP @ RPM 1 hp @ 1800 rpm
Ratio 20:1
Bolt Centers w/ Vertical Base Kits (in) 8 3/8 x 4 7/8
Input HP @ RPM 0.86 hp @ 1150 rpm, 1.4 hp @ 1750 rpm
Input (Shaft or Bore) Size 5/8 in
Base to Shaft Center Height w/High Vert. Base Kit 4.88 in
Reduction Type Single Reduction
Torque Out @ 1150 rpm 782 in lb
Motor HP 1/2 hp
Bolt Centers w/ Vertical "J" Base Kit (in) 8.63 x 2.63
Weight 26.1 LB
EAN or UPC 781711630495
We're here for you
with Service Centers across the country -
We have your back
Close Compare List Open Compare List Toggle

Product Comparison