Skip to content Skip to navigation menu
Boston GearHF721-20-B5-H-P12

HF721-20-B5-H-P12

700 Series 20:1 Ratio Hollow Assembly Single Reduction Worm Gear Reducer Without Base
Item #101795354
  • 1 Input Motor hp
  • 700 Series
  • 2.06 in Center Distance
  • Single Reduction
Boston GearHF721-20-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
  • 1 Input Motor hp
  • 700 Series
  • 2.06 in Center Distance
  • Single Reduction

description

  • Our standard 700 Series - the heart of Boston Gear's speed reducer product line - has been serving many industries reliably for over 40 years. Its proven modular design has set the industry standard for performance and is the most imitated product in today's worm gear speed reducer market.

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

  • Sudden, slam-type stalling should be avoided. Applications of this kind, which are beyond the expected normal performance of pneumatic power motors, will damage the power train due to the dynamic shock loads imposed.
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Torque Out @ 1750 rpm 892 in lb
Bolt Centers w/ Vertical "J" Base Kit (in) 8.63 x 2.63
Base to Centerline of Input Shaft 4 11/32 in
Bolt Centers w/ Vertical Base Kits (in) 8 3/8 x 4 7/8
Output Speed 87.5 rpm
Base to Shaft Center Height w/High Vert. Base Kit 4.88 in
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Input HP @ RPM 0.86 hp @ 1150 rpm, 1.4 hp @ 1750 rpm
Series 700
Motor Frame Size B556C
Output Bore Shaft Dia. 0.75 in
Base to Shaft Center Height w/Low Vert. Base Kit 3.13 in
Media Mapping Output H
Family Name HF
Frame Size 56C
Max. Thrust Load @ 1150 rpm 700 lb/in
Fan Cooled No
Material Cast Iron, Standard Paint
Rated Efficiency 88%
Output RPM @ 1750 rpm Input 87.5 rpm
Max. Overhung Load @ 1750 rpm 700 lb/in
Housing Material Cast Iron
Output Shaft Hollow
Base to Shaft Center Height w/Std. Base Kit 4.81 in
Input (Shaft or Bore) Size 5/8 in
Motor HP 1 hp
Frame 56C
Bolt Center 5 in x 2 7/8 in
Output Configuration Hollow Output
Input Motor HP 1
Bolt Center Length x Bolt Center Width 5 in x 2 7/8 in
HP @ RPM 1 hp @ 1800 rpm
Bore Code B5
Box Width 4 45/64 in
Output Shaft Projection Hollow Output
Shaft Assembly Code H
Style Right Angle
Input Configuration C-Face Quilled
Torque Out @ 1150 rpm 782 in lb
Base Mounting Attachment No Base
Ratio 20:1
Output Torque Rating Range [Min] 750 lb-in, 85 Nm
Washdown Duty No
Output Torque @ RPM 782 in lb @ 1150 rpm, 892 in lb @ 1750 rpm
Base to Shaft Center Height w/Vert. "J" Base Kit 3.94 in
Standard AGMA Service Class II
Worm Position Universal
Thermal Input Horsepower @ 1750 RPM N/A
Keyway Size 3/16 x 3/32
Media Mapping Hollow Bore P12
Output (Shaft or Bore) Size 3/4 in
Input Power Rating 1.4 hp, 1.044 kW
Media Mapping Style HF
Center Distance 2.0625 in
Output Torque 892 lb-in
Output Torque Rating Range [Max] 999 lb-in, 109 Nm
Bolt Centers w/ Std. Base Kit (in) 6 3/8 x 4 11/16
Center Distance Code 721
Max. Input HP @ 100 rpm 0.11 hp
Box Length 6 in
Motor Application General Purpose
Output RPM @ Input RPM 88 rpm @ 1750 rpm
Use With 721
Base to Centerline of Output Shaft 2 9/32 in
Reduction Type Single
Lubrication None
Box Height 6 3/8 in
Weight 26.1 LB
EAN or UPC 781711630334
We're here for you
with Service Centers across the country -
We have your back
Close Compare List Open Compare List Toggle

Product Comparison