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