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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.
Material Cast Iron, Standard Paint
Media Mapping Output H
Keyway Size 3/16 x 3/32
Bolt Centers w/ Std. Base Kit (in) 6 3/8 x 4 11/16
Bolt Center Length x Bolt Center Width 5 in x 2 7/8 in
Output Speed 87.5 rpm
Reduction Type Single
Bolt Center 5 in x 2 7/8 in
Base to Centerline of Input Shaft 4 11/32 in
Motor Frame Size B556C
Motor Application General Purpose
Worm Position Universal
Max. Overhung Load @ 1750 rpm 700 lb/in
Thermal Input Horsepower @ 1750 RPM N/A
Output Torque 892 lb-in
Standard AGMA Service Class II
Output Torque Rating Range [Max] 999 lb-in, 109 Nm
Box Width 4 45/64 in
Max. Thrust Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Torque Out @ 1750 rpm 892 in lb
Base to Shaft Center Height w/Vert. "J" Base Kit 3.94 in
Input Power Rating 1.4 hp, 1.044 kW
Center Distance Code 721
Input Configuration C-Face Quilled
Output Torque Rating Range [Min] 750 lb-in, 85 Nm
Max. Input HP @ 100 rpm 0.11 hp
Output (Shaft or Bore) Size 3/4 in
Input (Shaft or Bore) Size 5/8 in
Base Mounting Attachment No Base
Output Configuration Hollow Output
Output Bore Shaft Dia. 0.75 in
Bolt Centers w/ Vertical "J" Base Kit (in) 8.63 x 2.63
Ratio 20:1
Center Distance 2.0625 in
Rated Efficiency 88%
Use With 721
Max. Overhung Load @ RPM 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm
Lubrication None
Frame Size 56C
Media Mapping Hollow Bore P12
Shaft Assembly Code H
Family Name HF
Style Right Angle
Motor HP 1 hp
Input HP @ RPM 0.86 hp @ 1150 rpm, 1.4 hp @ 1750 rpm
Housing Material Cast Iron
Input Motor HP 1
Max. Thrust Load @ 1150 rpm 700 lb/in
Base to Shaft Center Height w/High Vert. Base Kit 4.88 in
Frame 56C
Output RPM @ Input RPM 88 rpm @ 1750 rpm
Base to Centerline of Output Shaft 2 9/32 in
Bolt Centers w/ Vertical Base Kits (in) 8 3/8 x 4 7/8
HP @ RPM 1 hp @ 1800 rpm
Media Mapping Style HF
Output RPM @ 1750 rpm Input 87.5 rpm
Fan Cooled No
Output Shaft Projection Hollow Output
Washdown Duty No
Output Shaft Hollow
Base to Shaft Center Height w/Std. Base Kit 4.81 in
Base to Shaft Center Height w/Low Vert. Base Kit 3.13 in
Series 700
Box Length 6 in
Bore Code B5
Torque Out @ 1150 rpm 782 in lb
Output Torque @ RPM 782 in lb @ 1150 rpm, 892 in lb @ 1750 rpm
Box Height 6 3/8 in
Weight 26.1 LB
EAN or UPC 781711630334
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