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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
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    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.
Torque Out @ 1750 rpm 892 in lb
Motor HP 1 hp
Style Right Angle
Bolt Centers w/ Vertical Base Kits (in) 8 3/8 x 4 7/8
Use With 721
Thermal Input Horsepower @ 1750 RPM N/A
Max. Overhung Load @ 1750 rpm 700 lb/in
Base to Centerline of Output Shaft 2 9/32 in
Bolt Center Length x Bolt Center Width 5 in x 2 7/8 in
Output Torque 892 lb-in
Media Mapping Output H
Shaft Assembly Code H
Input HP @ RPM 0.86 hp @ 1150 rpm, 1.4 hp @ 1750 rpm
Media Mapping Style HF
Output RPM @ Input RPM 88 rpm @ 1750 rpm
Motor Frame Size B556C
Max. Input HP @ 100 rpm 0.11 hp
Input (Shaft or Bore) Size 5/8 in
Box Height 6 3/8 in
Family Name HF
Series 700
Output Shaft Projection Hollow Output
Output Torque @ RPM 782 in lb @ 1150 rpm, 892 in lb @ 1750 rpm
Base to Shaft Center Height w/High Vert. Base Kit 4.88 in
Base to Centerline of Input Shaft 4 11/32 in
Rated Efficiency 88%
Max. Thrust Load @ 1150 rpm 700 lb/in
Center Distance 2.0625 in
Output Bore Shaft Dia. 0.75 in
Washdown Duty No
Output Torque Rating Range [Min] 750 lb-in, 85 Nm
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Output Configuration Hollow Output
Media Mapping Hollow Bore P12
HP @ RPM 1 hp @ 1800 rpm
Base to Shaft Center Height w/Low Vert. Base Kit 3.13 in
Frame Size 56C
Output Speed 87.5 rpm
Output Shaft Hollow
Output RPM @ 1750 rpm Input 87.5 rpm
Input Motor HP 1
Motor Application General Purpose
Output Torque Rating Range [Max] 999 lb-in, 109 Nm
Bolt Centers w/ Std. Base Kit (in) 6 3/8 x 4 11/16
Worm Position Universal
Ratio 20:1
Housing Material Cast Iron
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Box Width 4 45/64 in
Input Configuration C-Face Quilled
Lubrication None
Fan Cooled No
Keyway Size 3/16 x 3/32
Material Cast Iron, Standard Paint
Bolt Center 5 in x 2 7/8 in
Frame 56C
Output (Shaft or Bore) Size 3/4 in
Bore Code B5
Reduction Type Single
Torque Out @ 1150 rpm 782 in lb
Base Mounting Attachment No Base
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
Box Length 6 in
Center Distance Code 721
Base to Shaft Center Height w/Vert. "J" Base Kit 3.94 in
Standard AGMA Service Class II
Input Power Rating 1.4 hp, 1.044 kW
Weight 26.1 LB
EAN or UPC 781711630334
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