Skip to content Skip to navigation menu
Boston GearHF721-30-B5-H-P12

HF721-30-B5-H-P12

700 Series Bostmount C-Face Quilled Reducer
Item #101795475
  • 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-P12
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

  • Drives used in a vertical mounting application may require additional pipe plugs and/or grease fittings for proper lubrication and are considered special.
  • High loads, high ambient or operating temperatures, and unusually contaminated atmospheres will require more frequent relubrication.
Frame 56C
Box Length 6 in
HP @ RPM 0.75 hp @ 1800 rpm
Base to Centerline of Input Shaft 4 11/32 in
Ratio 30:1
Output RPM @ Input RPM 58 rpm @ 1750 rpm
Worm Position Universal
Bolt Centers w/ Vertical Base Kits (in) 8 3/8 x 4 7/8
Reduction Type Single Reduction
Keyway Size 3/16 x 3/32
Torque Out @ 1750 rpm 871 in lb
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
Max. Input HP @ 100 rpm 0.086 hp
Base to Shaft Center Height w/Vert. "J" Base Kit 3.94 in
Max. Overhung Load @ 1750 rpm 700 lb/in
Input HP @ RPM 0.62 hp @ 1150 rpm, 0.99 hp @ 1750 rpm
Family Name HF
Base to Centerline of Output Shaft 2 9/32 in
Fan Cooled No
Motor Application General Purpose
Thermal Input Horsepower @ 1750 RPM N/A
Motor HP 0.75 hp
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Input Configuration C-Face Quilled
Box Width 4 45/64 in
Bolt Center Length x Bolt Center Width 5 in x 2 7/8 in
Torque Out @ 1150 rpm 795 in lb
Base to Shaft Center Height w/Std. Base Kit 4.81 in
Frame Size 56C
Output Torque @ RPM 795 in lb @ 1150 rpm, 871 in lb @ 1750 rpm
Use With 721
Lubrication None
Washdown Duty No
Box Height 6 3/8 in
Bore Code B5
Housing Material Cast Iron
Base to Shaft Center Height w/High Vert. Base Kit 4.88 in
Output RPM @ 1750 rpm Input 58.33 rpm
Bolt Centers w/ Std. Base Kit (in) 6 3/8 x 4 11/16
Bolt Center 5 in x 2 7/8 in
Center Distance 2.0625 in
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Shaft Assembly Code H
Output (Shaft or Bore) Size 3/4 in
Output Configuration Hollow Output
Input (Shaft or Bore) Size 5/8 in
Max. Thrust Load @ 1150 rpm 700 lb/in
Weight 26.1 LB
EAN or UPC 781711630396
We're here for you
with Service Centers across the country -
We have your back
Close Compare List Open Compare List Toggle

Product Comparison