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Boston Gear
RF721-5-B7-J
700 Series 5:1 Ratio J Assembly Single Reduction Worm Gear Reducer Without Base
Item #101870563
- 2 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
| Keyway Size | 3/16 x 3/32 |
| Base Mounting Attachment | No Base |
| Bolt Centers w/ Std. Base Kit (in) | 6 3/8 x 4 11/16 |
| Frame | 140TC, 180C |
| Output Speed | 350 rpm |
| Style | Right Angle |
| Input Configuration | C-Face Coupled |
| Use With | 721 |
| Thermal Input Horsepower @ 1750 RPM | N/A |
| Series | 700 |
| Housing Material | Cast Iron |
| Motor HP | 2 hp |
| Bolt Centers w/ Vertical Base Kits (in) | 8 3/8 x 4 7/8 |
| Input (Shaft or Bore) Size | 7/8 in |
| Output Torque Rating Range [Max] | 749 lb-in, 84 Nm |
| Output Shaft | Solid |
| Bore Code | B7 |
| Center Distance Code | 721 |
| Rated Efficiency | 94% |
| Output Bore Shaft Dia. | 1 in |
| Lubrication | None |
| Output Torque | 620 lb-in |
| Fan Cooled | No |
| Output RPM @ Input RPM | 350 rpm @ 1750 rpm |
| Bolt Centers w/ Vertical "J" Base Kit (in) | 8.63 x 2.63 |
| Output RPM @ 1750 rpm Input | 350 rpm |
| Output Torque Rating Range [Min] | 500 lb-in, 60 Nm |
| Base to Shaft Center Height w/High Vert. Base Kit | 4.88 in |
| Base to Shaft Center Height w/Std. Base Kit | 4.81 in |
| Base to Centerline of Output Shaft | 2 9/32 in |
| Washdown Duty | No |
| Bolt Center | 5 in x 2 7/8 in |
| Frame Size | 140TC, 180C |
| Material | Cast Iron, Standard Paint |
| Base to Shaft Center Height w/Low Vert. Base Kit | 3.13 in |
| Output Configuration | Right Output |
| Center Distance | 2.0625 in |
| Output Torque @ RPM | 575 in lb @ 1150 rpm, 620 in lb @ 1750 rpm |
| Motor Frame Size | B7140TC180C |
| Max. Thrust Load @ 1150 rpm | 700 lb/in |
| Box Height | 6 3/8 in |
| Worm Position | Universal |
| Family Name | RF |
| Input Power Rating | 3.66 hp, 2.729 kW |
| Media Mapping Output | J |
| Media Mapping Style | RF |
| Output (Shaft or Bore) Size | 1 in |
| Shaft Assembly Code | J |
| Motor Application | General Purpose |
| Max. Overhung Load @ 1750 rpm | 700 lb/in |
| Max. Overhung Load @ RPM | 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm |
| Max. Input HP @ 100 rpm | 0.3 hp |
| Box Length | 6 in |
| Torque Out @ 1750 rpm | 620 in lb |
| Box Width | 5 3/16 in |
| Torque Out @ 1150 rpm | 575 in lb |
| Input Motor HP | 2 |
| Reduction Type | Single |
| Bolt Center Length x Bolt Center Width | 5 in x 2 7/8 in |
| HP @ RPM | 3 hp @ 1800 rpm |
| Max. Thrust Load @ RPM | 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm |
| Base to Shaft Center Height w/Vert. "J" Base Kit | 3.94 in |
| Standard | AGMA Service Class II |
| Ratio | 5:1 |
| Input HP @ RPM | 2.33 hp @ 1150 rpm, 3.66 hp @ 1750 rpm |
| Base to Centerline of Input Shaft | 4 11/32 in |
| Weight | 36.1 LB |
| EAN or UPC | 781711526972 |
