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