Skip to content Skip to navigation menu
Boston GearHF721-30-B5-H-P19

HF721-30-B5-H-P19

700 Series Bostmount C-Face Quilled Reducer
Item #101794631
  • 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-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
  • 30:1 Ratio
  • 56C Frame
  • C-Face Quilled Input
  • Hollow Output

features

  • 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
  • Large oil reservoir provides efficient heat dissipation and lubrication for longer life
  • Housing is straddle milled top and bottom for precise alignment

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.
Base to Centerline of Input Shaft 4 11/32 in
Frame 56C
Box Length 6 in
Fan Cooled No
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Bolt Center 5 in x 2 7/8 in
Keyway Size 3/16 x 3/32
Base to Shaft Center Height w/Vert. "J" Base Kit 3.94 in
Washdown Duty No
Base to Shaft Center Height w/Low Vert. Base Kit 3.13 in
Input Configuration C-Face Quilled
Bore Code B5
Torque Out @ 1150 rpm 795 in lb
Center Distance 2 1/16 in
Input HP @ RPM 0.62 hp @ 1150 rpm, 0.99 hp @ 1750 rpm
Use With 721
Thermal Input Horsepower @ 1750 RPM N/A
Max. Thrust Load @ 1150 rpm 700 lb/in
Motor HP 3/4 hp
Output RPM @ 1750 rpm Input 58.33 rpm
Ratio 30:1
Max. Overhung Load @ 1750 rpm 700 lb/in
Output (Shaft or Bore) Size 1 3/16 in
HP @ RPM 0.75 hp @ 1800 rpm
Reduction Type Single Reduction
Worm Position Universal
Bolt Centers w/ Vertical "J" Base Kit (in) 8.63 x 2.63
Base to Shaft Center Height w/Std. Base Kit 4.81 in
Lubrication None
Bolt Centers w/ Vertical Base Kits (in) 8 3/8 x 4 7/8
Box Width 4 45/64 in
Bolt Center Length x Bolt Center Width 5 in x 2 7/8 in
Motor Application General Purpose
Housing Material Cast Iron
Family Name HF
Input (Shaft or Bore) Size 5/8 in
Shaft Assembly Code H
Max. Input HP @ 100 rpm 0.086 hp
Base to Shaft Center Height w/High Vert. Base Kit 4.88 in
Box Height 6 3/8 in
Base to Centerline of Output Shaft 2 9/32 in
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Frame Size 56C
Torque Out @ 1750 rpm 871 in lb
Bolt Centers w/ Std. Base Kit (in) 6 3/8 x 4 11/16
Output Torque @ RPM 795 in lb @ 1150 rpm, 871 in lb @ 1750 rpm
Output Configuration Hollow Output
Output RPM @ Input RPM 58 rpm @ 1750 rpm
Weight 26.1 LB
EAN or UPC 781711630426
We're here for you
with Service Centers across the country -
We have your back
Close Compare List Open Compare List Toggle

Product Comparison