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Boston Gear
F721-20-B5-H
700 Series 20:1 Ratio H Assembly Single Reduction Worm Gear Reducer Without Base
Item #101809817
- 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
- Must be filled to the proper level with the recommended lubricant for your application before operation
| Reduction Type | Single |
| Base to Centerline of Input Shaft | 4 11/32 in |
| Output Shaft Projection | Solid Double Projecting Output |
| Frame | 56C |
| Bolt Center | 5 in x 2 7/8 in |
| Output Torque Rating Range [Max] | 999 lb-in, 109 Nm |
| Box Length | 6 in |
| Max. Overhung Load @ 1750 rpm | 700 lb/in |
| Bolt Center Length x Bolt Center Width | 5 in x 2 7/8 in |
| Fan Cooled | No |
| Style | Right Angle |
| Frame Size | 56C |
| Max. Overhung Load @ RPM | 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm |
| Output Torque Rating Range [Min] | 750 lb-in, 85 Nm |
| Base to Shaft Center Height w/Std. Base Kit | 4.81 in |
| Torque Out @ 1750 rpm | 892 in lb |
| 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 |
| Center Distance Code | 721 |
| Input Power Rating | 1.4 hp, 1.044 kW |
| Output RPM @ 1750 rpm Input | 87.5 rpm |
| Output Torque | 892 lb-in |
| Washdown Duty | No |
| Max. Input HP @ 100 rpm | 0.11 hp |
| Motor Application | General Purpose |
| Output Shaft | Solid |
| Worm Position | Universal |
| Output Configuration | Left & Right Output |
| Output Bore Shaft Dia. | 1 in |
| Family Name | F |
| Ratio | 20:1 |
| Media Mapping Style | F |
| Input Motor HP | 1 |
| Max. Thrust Load @ 1150 rpm | 700 lb/in |
| Base | No |
| Rated Efficiency | 88% |
| Base to Shaft Center Height w/Low Vert. Base Kit | 3.13 in |
| Bolt Centers w/ Vertical Base Kits (in) | 8 3/8 x 4 7/8 |
| HP @ RPM | 1 hp @ 1800 rpm |
| Bore Code | B5 |
| Standard | AGMA Service Class II |
| Torque Out @ 1150 rpm | 782 in lb |
| Output Speed | 87.5 rpm |
| Center Distance | 2.0625 in |
| Bolt Centers w/ Vertical "J" Base Kit (in) | 8.63 x 2.63 |
| Shaft Assembly Code | H |
| Base Mounting Attachment | No Base |
| Input Configuration | C-Face Quilled |
| Use With | 721 |
| Input HP @ RPM | 0.86 hp @ 1150 rpm, 1.4 hp @ 1750 rpm |
| Thermal Input Horsepower @ 1750 RPM | N/A |
| Keyway Size | 3/16 x 3/32 |
| Output (Shaft or Bore) Size | 1 in |
| Lubrication | None |
| Base to Centerline of Output Shaft | 2.28 in |
| Input (Shaft or Bore) Size | 5/8 in |
| Series | 700 |
| Output Torque @ RPM | 782 in lb @ 1150 rpm, 892 in lb @ 1750 rpm |
| Max. Thrust Load @ RPM | 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm |
| Material | Cast Iron, Standard Paint |
| Motor HP | 1 hp |
| Housing Material | Cast Iron |
| Motor Frame Size | B556C |
| Box Width | 5 3/16 in |
| Media Mapping Output | H |
| Box Height | 6 3/8 in |
| Base to Shaft Center Height w/Vert. "J" Base Kit | 3.94 in |
| Weight | 24.1 LB |
| EAN or UPC | 781711519646 |
