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.
Worm Position Universal
Motor HP 3/4 hp
Thermal Input Horsepower @ 1750 RPM N/A
Motor Application General Purpose
Base to Shaft Center Height w/Std. Base Kit 4.81 in
Output RPM @ Input RPM 58 rpm @ 1750 rpm
Base to Shaft Center Height w/Vert. "J" Base Kit 3.94 in
Input Configuration C-Face Quilled
Base to Centerline of Output Shaft 2 9/32 in
Base to Centerline of Input Shaft 4 11/32 in
Torque Out @ 1750 rpm 871 in lb
Bore Code B5
Bolt Centers w/ Vertical Base Kits (in) 8 3/8 x 4 7/8
Center Distance 2 1/16 in
Bolt Centers w/ Std. Base Kit (in) 6 3/8 x 4 11/16
Input (Shaft or Bore) Size 5/8 in
Lubrication None
Keyway Size 3/16 x 3/32
Max. Thrust Load @ 1150 rpm 700 lb/in
Frame Size 56C
Bolt Center Length x Bolt Center Width 5 in x 2 7/8 in
Use With 721
HP @ RPM 0.75 hp @ 1800 rpm
Shaft Assembly Code H
Box Length 6 in
Max. Overhung Load @ 1750 rpm 700 lb/in
Bolt Centers w/ Vertical "J" Base Kit (in) 8.63 x 2.63
Torque Out @ 1150 rpm 795 in lb
Output RPM @ 1750 rpm Input 58.33 rpm
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Box Width 4 45/64 in
Output (Shaft or Bore) Size 1 7/16 in
Ratio 30:1
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Housing Material Cast Iron
Output Torque @ RPM 795 in lb @ 1150 rpm, 871 in lb @ 1750 rpm
Max. Input HP @ 100 rpm 0.086 hp
Washdown Duty No
Fan Cooled No
Output Configuration Hollow Output
Base to Shaft Center Height w/High Vert. Base Kit 4.88 in
Base to Shaft Center Height w/Low Vert. Base Kit 3.13 in
Reduction Type Single Reduction
Input HP @ RPM 0.62 hp @ 1150 rpm, 0.99 hp @ 1750 rpm
Box Height 6 3/8 in
Frame 56C
Family Name HF
Bolt Center 5 in x 2 7/8 in
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