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Boston Gear
F7721-20-B5-J
700 Series 20:1 Ratio J Assembly Single Reduction Worm Gear Reducer Without Base
Item #101834490
- 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
- Must be filled to the proper level with the recommended lubricant for your application before operation
| Output (Shaft or Bore) Size | 1 in |
| Max. Thrust Load @ RPM | 700 lb/in @ 1750 rpm, 700 lb/in @ 1150 rpm |
| Output Torque Rating Range [Min] | 750 lb-in, 85 Nm |
| Motor Frame Size | B556C |
| Shaft Assembly Code | J |
| Bolt Center | 5 in x 2 7/8 in |
| Output RPM @ Input RPM | 88 rpm @ 1750 rpm |
| Base to Centerline of Input Shaft | 4 11/32 in |
| Center Distance Code | 721 |
| Motor HP | 1 hp |
| Torque Out @ 1750 rpm | 892 in lb |
| Frame | 56C |
| Base | No |
| Use With | 721 |
| Motor Application | General Purpose |
| Worm Position | Universal |
| Bolt Centers w/ Std. Base Kit (in) | 6 3/8 x 4 11/16 |
| Output RPM @ 1750 rpm Input | 88 rpm |
| Torque Out @ 1150 rpm | 782 in lb |
| Output Speed | 87.5 rpm |
| Bolt Centers w/ Vertical Base Kits (in) | 8 3/8 x 4 7/8 |
| HP @ RPM | 1 hp @ 1800 rpm |
| Media Mapping Style | F |
| Output Shaft Projection | Solid Right Output |
| Base to Shaft Center Height w/Std. Base Kit | 4.81 in |
| Box Height | 6 3/8 in |
| Ratio | 20:1 |
| Output Torque @ RPM | 892 in lb @ 1750 rpm, 782 in lb @ 1150 rpm |
| Base to Shaft Center Height w/Low Vert. Base Kit | 3.13 in |
| Bolt Centers w/ Vertical "J" Base Kit (in) | 8.63 x 2.63 |
| Base to Shaft Center Height w/Vert. "J" Base Kit | 3.94 in |
| Output Shaft | Solid |
| Housing Material | Cast Iron |
| Max. Input HP @ 100 rpm | 0.11 hp |
| Output Bore Shaft Dia. | 1 in |
| Media Mapping Output | J |
| Center Distance | 2.0625 in |
| Lubrication | None |
| Max. Thrust Load @ 1150 rpm | 700 lb/in |
| Base to Shaft Center Height w/High Vert. Base Kit | 4.88 in |
| Family Name | F |
| Bolt Pattern | 5 x 2.88 |
| Input (Shaft or Bore) Size | 5/8 in |
| Style | Right Angle |
| Base to Centerline of Output Shaft | 2.28 in |
| Material | Cast Iron, Standard Paint |
| Input Motor HP | 1 |
| Bore Code | B5 |
| Reduction Type | Single |
| Max. Overhung Load @ 1750 rpm | 700 lb/in |
| Max. Overhung Load @ RPM | 700 lb/in @ 1750 rpm, 700 lb/in @ 1150 rpm |
| Input Power Rating | 1.4 hp, 1.044 kW |
| Frame Size | 56C |
| Output Configuration | Right Output |
| Input HP @ RPM | 1.4 hp @ 1750 rpm, 0.86 hp @ 1150 rpm |
| Box Length | 6 in |
| Input Configuration | C-Face Quilled |
| Output Torque | 892 lb-in |
| Rated Efficiency | 88% |
| Output Torque Rating Range [Max] | 999 lb-in, 109 Nm |
| Fan Cooled | No |
| Washdown Duty | No |
| Box Width | 5 3/16 in |
| Base Mounting Attachment | No Base |
| Standard | AGMA Service Class II |
| Series | 700 |
| Bolt Center Length x Bolt Center Width | 5 in x 2 7/8 in |
| Weight | 24.1 LB |
| EAN or UPC | 781711519653 |
