Skip to content Skip to navigation menu
Boston GearHF721-40-B5-H-P19

HF721-40-B5-H-P19

700 Series Bostmount C-Face Quilled Reducer
Item #101794630
  • 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-P19
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

  • High loads, high ambient or operating temperatures, and unusually contaminated atmospheres will require more frequent relubrication.
Box Width 4 45/64 in
Base to Shaft Center Height w/Std. Base Kit 4.81 in
Frame 56C
Box Length 6 in
Washdown Duty No
Output (Shaft or Bore) Size 1 3/16 in
Housing Material Cast Iron
Max. Input HP @ 100 rpm 0.074 hp
Lubrication None
Torque Out @ 1750 rpm 876 in lb
Max. Overhung Load @ 1750 rpm 700 lb/in
Ratio 40:1
Output Configuration Hollow Output
Family Name HF
Input HP @ RPM 0.49 hp @ 1150 rpm, 0.81 hp @ 1750 rpm
Bolt Centers w/ Vertical "J" Base Kit (in) 8.63 x 2.63
Input Configuration C-Face Quilled
Thermal Input Horsepower @ 1750 RPM N/A
Worm Position Universal
HP @ RPM 0.3333333 hp @ 1200 rpm, 0.5 hp @ 1800 rpm
Output Torque @ RPM 785 in lb @ 1150 rpm, 876 in lb @ 1750 rpm
Bolt Centers w/ Vertical Base Kits (in) 8 3/8 x 4 7/8
Input (Shaft or Bore) Size 5/8 in
Base to Shaft Center Height w/High Vert. Base Kit 4.88 in
Max. Thrust Load @ 1150 rpm 700 lb/in
Center Distance 2 1/16 in
Base to Shaft Center Height w/Low Vert. Base Kit 3.13 in
Torque Out @ 1150 rpm 785 in lb
Box Height 6 3/8 in
Motor HP 1/2 hp
Reduction Type Single Reduction
Keyway Size 3/16 x 3/32
Base to Centerline of Input Shaft 4 11/32 in
Fan Cooled No
Bolt Center 5 in x 2 7/8 in
Output RPM @ Input RPM 44 rpm @ 1750 rpm
Motor Application General Purpose
Bolt Centers w/ Std. Base Kit (in) 6 3/8 x 4 11/16
Base to Shaft Center Height w/Vert. "J" Base Kit 3.94 in
Bolt Center Length x Bolt Center Width 5 in x 2 7/8 in
Shaft Assembly Code H
Bore Code B5
Use With 721
Frame Size 56C
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Output RPM @ 1750 rpm Input 43.75 rpm
Base to Centerline of Output Shaft 2 9/32 in
Weight 26.1 LB
EAN or UPC 781711630488
We're here for you
with Service Centers across the country -
We have your back
Close Compare List Open Compare List Toggle

Product Comparison