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