Skip to content Skip to navigation menu
Boston GearHF721-40-B5-H-P16

HF721-40-B5-H-P16

700 Series Bostmount C-Face Quilled Reducer
Item #101793659
  • 2 1/16" Center Distance
  • 40:1 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-P16
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
  • 40:1 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

  • Mount in the horizontal position only.
  • High loads, high ambient or operating temperatures, and unusually contaminated atmospheres will require more frequent relubrication.
Lubrication None
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Torque Out @ 1150 rpm 785 in lb
Frame Size 56C
Torque Out @ 1750 rpm 876 in lb
Fan Cooled No
Shaft Assembly Code H
Bolt Center Length x Bolt Center Width 5 in x 2 7/8 in
Max. Overhung Load @ 1750 rpm 700 lb/in
Input HP @ RPM 0.49 hp @ 1150 rpm, 0.81 hp @ 1750 rpm
Box Height 6 3/8 in
Motor Application General Purpose
Housing Material Cast Iron
Bore Code B5
Base to Shaft Center Height w/High Vert. Base Kit 4.88 in
Output Configuration Hollow Output
Bolt Centers w/ Std. Base Kit (in) 6 3/8 x 4 11/16
Bolt Center 5 in x 2 7/8 in
Bolt Centers w/ Vertical "J" Base Kit (in) 8.63 x 2.63
Center Distance 2 1/16 in
Box Width 4 45/64 in
Base to Centerline of Input Shaft 4 11/32 in
Base to Shaft Center Height w/Low Vert. Base Kit 3.13 in
Base to Shaft Center Height w/Std. Base Kit 4.81 in
Base to Shaft Center Height w/Vert. "J" Base Kit 3.94 in
Base to Centerline of Output Shaft 2 9/32 in
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Keyway Size 3/16 x 3/32
Motor HP 1/2 hp
Thermal Input Horsepower @ 1750 RPM N/A
Ratio 40:1
Reduction Type Single Reduction
Max. Thrust Load @ 1150 rpm 700 lb/in
Output RPM @ Input RPM 44 rpm @ 1750 rpm
Output RPM @ 1750 rpm Input 43.75 rpm
Use With 721
Frame 56C
Output Torque @ RPM 785 in lb @ 1150 rpm, 876 in lb @ 1750 rpm
Output (Shaft or Bore) Size 1 in
HP @ RPM 0.3333333 hp @ 1200 rpm, 0.5 hp @ 1800 rpm
Box Length 6 in
Family Name HF
Bolt Centers w/ Vertical Base Kits (in) 8 3/8 x 4 7/8
Worm Position Universal
Input (Shaft or Bore) Size 5/8 in
Washdown Duty No
Max. Input HP @ 100 rpm 0.074 hp
Input Configuration C-Face Quilled
Weight 26.1 LB
EAN or UPC 781711630471
We're here for you
with Service Centers across the country -
We have your back
Close Compare List Open Compare List Toggle

Product Comparison