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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 | Solid |
| Washdown Duty | No |
| Output Torque | 892 lb-in |
| Bolt Centers w/ Vertical Base Kits (in) | 8 3/8 x 4 7/8 |
| Bolt Centers w/ Std. Base Kit (in) | 6 3/8 x 4 11/16 |
| Frame Size | 56C |
| Output RPM @ Input RPM | 88 rpm @ 1750 rpm |
| Base Mounting Attachment | No Base |
| Max. Thrust Load @ 1150 rpm | 700 lb/in |
| Media Mapping Output | J |
| Output (Shaft or Bore) Size | 1 in |
| Max. Thrust Load @ RPM | 700 lb/in @ 1750 rpm, 700 lb/in @ 1150 rpm |
| Box Width | 5 3/16 in |
| Media Mapping Style | F |
| Base to Centerline of Input Shaft | 4 11/32 in |
| Output Configuration | Right Output |
| Base to Shaft Center Height w/Low Vert. Base Kit | 3.13 in |
| Motor HP | 1 hp |
| Reduction Type | Single |
| Base to Centerline of Output Shaft | 2.28 in |
| Rated Efficiency | 88% |
| Frame | 56C |
| Bolt Pattern | 5 x 2.88 |
| Motor Frame Size | B556C |
| Motor Application | General Purpose |
| Base | No |
| Ratio | 20:1 |
| Input HP @ RPM | 1.4 hp @ 1750 rpm, 0.86 hp @ 1150 rpm |
| Housing Material | Cast Iron |
| Input Motor HP | 1 |
| Base to Shaft Center Height w/Vert. "J" Base Kit | 3.94 in |
| Bore Code | B5 |
| Material | Cast Iron, Standard Paint |
| Fan Cooled | No |
| Box Length | 6 in |
| Max. Input HP @ 100 rpm | 0.11 hp |
| Max. Overhung Load @ 1750 rpm | 700 lb/in |
| Output Shaft Projection | Solid Right Output |
| Output Torque Rating Range [Min] | 750 lb-in, 85 Nm |
| Output Torque Rating Range [Max] | 999 lb-in, 109 Nm |
| Output Bore Shaft Dia. | 1 in |
| Center Distance Code | 721 |
| Input Configuration | C-Face Quilled |
| Standard | AGMA Service Class II |
| Torque Out @ 1750 rpm | 892 in lb |
| Use With | 721 |
| Output Torque @ RPM | 892 in lb @ 1750 rpm, 782 in lb @ 1150 rpm |
| Style | Right Angle |
| Bolt Center Length x Bolt Center Width | 5 in x 2 7/8 in |
| Series | 700 |
| Torque Out @ 1150 rpm | 782 in lb |
| Shaft Assembly Code | J |
| Worm Position | Universal |
| Max. Overhung Load @ RPM | 700 lb/in @ 1750 rpm, 700 lb/in @ 1150 rpm |
| Output RPM @ 1750 rpm Input | 88 rpm |
| Lubrication | None |
| Base to Shaft Center Height w/Std. Base Kit | 4.81 in |
| Center Distance | 2.0625 in |
| Input Power Rating | 1.4 hp, 1.044 kW |
| Box Height | 6 3/8 in |
| Output Speed | 87.5 rpm |
| Base to Shaft Center Height w/High Vert. Base Kit | 4.88 in |
| HP @ RPM | 1 hp @ 1800 rpm |
| Family Name | F |
| Bolt Centers w/ Vertical "J" Base Kit (in) | 8.63 x 2.63 |
| Bolt Center | 5 in x 2 7/8 in |
| Input (Shaft or Bore) Size | 5/8 in |
| Weight | 24.1 LB |
| EAN or UPC | 781711519653 |
