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Boston Gear
HF7721-40-B5-H-P20
700 Series 40:1 Ratio Hollow Assembly Single Reduction Worm Gear Reducer Without Base
Item #101795718
- 0.75 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
- Must be filled to the proper level with the recommended lubricant for your application before operation
| Output Speed | 43.8 rpm |
| Base to Shaft Center Height w/Vert. "J" Base Kit | 3.94 in |
| Output Torque @ RPM | 782 in lb @ 1150 rpm, 892 in lb @ 1750 rpm |
| Reduction Type | Single |
| Input HP @ RPM | 0.86 hp @ 1150 rpm, 1.4 hp @ 1750 rpm |
| Media Mapping Hollow Bore | P20 |
| Input (Shaft or Bore) Size | 5/8 in |
| Box Height | 6 3/8 in |
| Base to Shaft Center Height w/Low Vert. Base Kit | 3.13 in |
| Standard | AGMA Service Class I |
| Media Mapping Output | H |
| Torque Out @ 1150 rpm | 782 in lb |
| Output Torque Rating Range [Min] | 750 lb-in, 85 Nm |
| Max. Thrust Load @ RPM | 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm |
| Bolt Centers w/ Vertical Base Kits (in) | 8 3/8 x 4 7/8 |
| Rated Efficiency | 75% |
| Frame Size | 56C |
| Output Shaft Projection | Hollow Output |
| Shaft Assembly Code | H |
| Fan Cooled | No |
| Output Configuration | Hollow Output |
| Box Width | 4 45/64 in |
| Output RPM @ Input RPM | 88 rpm @ 1750 rpm |
| Thermal Input Horsepower @ 1750 RPM | N/A |
| Output (Shaft or Bore) Size | 1 1/4 in |
| Output RPM @ 1750 rpm Input | 87.5 rpm |
| Motor HP | 1/2 hp |
| Output Torque Rating Range [Max] | 999 lb-in, 109 Nm |
| Base to Centerline of Output Shaft | 2 9/32 in |
| Bolt Centers w/ Std. Base Kit (in) | 6 3/8 x 4 11/16 |
| Bolt Center | 5 in x 2 7/8 in |
| Center Distance | 2.0625 in |
| Center Distance Code | 721 |
| HP @ RPM | 1 hp @ 1800 rpm |
| Base to Centerline of Input Shaft | 4 11/32 in |
| Output Torque | 876 lb-in |
| Style | Right Angle |
| Ratio | 40:1 |
| Motor Application | General Purpose |
| Base to Shaft Center Height w/High Vert. Base Kit | 4.88 in |
| Max. Thrust Load @ 1150 rpm | 700 lb/in |
| Media Mapping Style | HF |
| Torque Out @ 1750 rpm | 892 in lb |
| Input Configuration | C-Face Quilled |
| Base Mounting Attachment | No Base |
| Max. Overhung Load @ RPM | 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm |
| Frame | 56C |
| Use With | 721 |
| Input Power Rating | 0.81 hp, 0.604 kW |
| Bore Code | B5 |
| Bolt Centers w/ Vertical "J" Base Kit (in) | 8.63 x 2.63 |
| Family Name | HF |
| Input Motor HP | 0.75 |
| Motor Frame Size | B556C |
| Output Bore Shaft Dia. | 1.25 in |
| Series | 700 |
| Worm Position | Universal |
| Housing Material | Cast Iron |
| Lubrication | None |
| Base to Shaft Center Height w/Std. Base Kit | 4.81 in |
| Keyway Size | 3/16 x 3/32 |
| Output Shaft | Hollow |
| Max. Overhung Load @ 1750 rpm | 700 lb/in |
| Box Length | 6 in |
| Material | Cast Iron, Standard Paint |
| Washdown Duty | No |
| Bolt Center Length x Bolt Center Width | 5 in x 2 7/8 in |
| Max. Input HP @ 100 rpm | 0.11 hp |
| Weight | 26.1 LB |
| EAN or UPC | 781711630495 |
