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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
| Base to Shaft Center Height w/Low Vert. Base Kit | 3.13 in |
| Motor HP | 1/2 hp |
| Rated Efficiency | 75% |
| HP @ RPM | 1 hp @ 1800 rpm |
| Max. Thrust Load @ RPM | 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm |
| Output Speed | 43.8 rpm |
| Fan Cooled | No |
| Base Mounting Attachment | No Base |
| Output Bore Shaft Dia. | 1.25 in |
| Series | 700 |
| Reduction Type | Single |
| Bolt Center Length x Bolt Center Width | 5 in x 2 7/8 in |
| Keyway Size | 3/16 x 3/32 |
| Shaft Assembly Code | H |
| Max. Thrust Load @ 1150 rpm | 700 lb/in |
| Output RPM @ 1750 rpm Input | 87.5 rpm |
| Output Torque Rating Range [Max] | 999 lb-in, 109 Nm |
| Media Mapping Style | HF |
| Box Length | 6 in |
| Bolt Centers w/ Vertical "J" Base Kit (in) | 8.63 x 2.63 |
| Motor Application | General Purpose |
| Input Motor HP | 0.75 |
| Center Distance | 2.0625 in |
| Washdown Duty | No |
| Base to Shaft Center Height w/Vert. "J" Base Kit | 3.94 in |
| Output Configuration | Hollow Output |
| Use With | 721 |
| Output Shaft Projection | Hollow Output |
| Max. Input HP @ 100 rpm | 0.11 hp |
| Max. Overhung Load @ RPM | 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm |
| Output RPM @ Input RPM | 88 rpm @ 1750 rpm |
| Input (Shaft or Bore) Size | 5/8 in |
| Material | Cast Iron, Standard Paint |
| Input Configuration | C-Face Quilled |
| Family Name | HF |
| Ratio | 40:1 |
| Input Power Rating | 0.81 hp, 0.604 kW |
| Media Mapping Hollow Bore | P20 |
| Base to Shaft Center Height w/Std. Base Kit | 4.81 in |
| Output Shaft | Hollow |
| Worm Position | Universal |
| Input HP @ RPM | 0.86 hp @ 1150 rpm, 1.4 hp @ 1750 rpm |
| Output Torque | 876 lb-in |
| Base to Centerline of Input Shaft | 4 11/32 in |
| Bore Code | B5 |
| 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 |
| Lubrication | None |
| Output (Shaft or Bore) Size | 1 1/4 in |
| Motor Frame Size | B556C |
| Standard | AGMA Service Class I |
| Frame | 56C |
| Torque Out @ 1150 rpm | 782 in lb |
| Center Distance Code | 721 |
| Thermal Input Horsepower @ 1750 RPM | N/A |
| Bolt Center | 5 in x 2 7/8 in |
| Output Torque Rating Range [Min] | 750 lb-in, 85 Nm |
| Box Width | 4 45/64 in |
| Frame Size | 56C |
| Base to Centerline of Output Shaft | 2 9/32 in |
| Bolt Centers w/ Vertical Base Kits (in) | 8 3/8 x 4 7/8 |
| Box Height | 6 3/8 in |
| Style | Right Angle |
| Max. Overhung Load @ 1750 rpm | 700 lb/in |
| Media Mapping Output | H |
| Housing Material | Cast Iron |
| Base to Shaft Center Height w/High Vert. Base Kit | 4.88 in |
| Torque Out @ 1750 rpm | 892 in lb |
| Weight | 26.1 LB |
| EAN or UPC | 781711630495 |
