Skip to content Skip to navigation menu
Boston GearHF721-30-B5-H-P23

HF721-30-B5-H-P23

700 Series Bostmount C-Face Quilled Reducer
Item #101794743
  • 2 1/16" Center Distance
  • 30:1 Ratio
  • 56C Frame
  • C-Face Quilled Input
  • Hollow Output
  • Universal Worm Position
  • No Lubricant
  • Cast Iron
+ Show More + Show Less
Boston GearHF721-30-B5-H-P23
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
  • 30:1 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.
Shaft Assembly Code H
Motor HP 3/4 hp
Use With 721
Bolt Centers w/ Std. Base Kit (in) 6 3/8 x 4 11/16
Family Name HF
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Max. Thrust Load @ 1150 rpm 700 lb/in
Torque Out @ 1750 rpm 871 in lb
Bolt Center 5 in x 2 7/8 in
Housing Material Cast Iron
Keyway Size 3/16 x 3/32
Base to Centerline of Output Shaft 2 9/32 in
Motor Application General Purpose
Ratio 30:1
Output Configuration Hollow Output
Center Distance 2 1/16 in
Bore Code B5
Frame Size 56C
Box Length 6 in
Thermal Input Horsepower @ 1750 RPM N/A
Bolt Center Length x Bolt Center Width 5 in x 2 7/8 in
Torque Out @ 1150 rpm 795 in lb
Lubrication None
Box Width 4 45/64 in
Input HP @ RPM 0.62 hp @ 1150 rpm, 0.99 hp @ 1750 rpm
Input Configuration C-Face Quilled
Worm Position Universal
Base to Shaft Center Height w/Std. Base Kit 4.81 in
Output Torque @ RPM 795 in lb @ 1150 rpm, 871 in lb @ 1750 rpm
Input (Shaft or Bore) Size 5/8 in
Bolt Centers w/ Vertical Base Kits (in) 8 3/8 x 4 7/8
Bolt Centers w/ Vertical "J" Base Kit (in) 8.63 x 2.63
Max. Overhung Load @ 1750 rpm 700 lb/in
Output RPM @ Input RPM 58 rpm @ 1750 rpm
Frame 56C
Base to Shaft Center Height w/High Vert. Base Kit 4.88 in
Box Height 6 3/8 in
Washdown Duty No
Output RPM @ 1750 rpm Input 58.33 rpm
Reduction Type Single Reduction
Base to Shaft Center Height w/Low Vert. Base Kit 3.13 in
Base to Centerline of Input Shaft 4 11/32 in
Base to Shaft Center Height w/Vert. "J" Base Kit 3.94 in
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Fan Cooled No
Output (Shaft or Bore) Size 1 7/16 in
HP @ RPM 0.75 hp @ 1800 rpm
Max. Input HP @ 100 rpm 0.086 hp
Weight 26.1 LB
EAN or UPC 781711630440
We're here for you
with Service Centers across the country -
We have your back
Close Compare List Open Compare List Toggle

Product Comparison