Find a Service Center
Boston Gear
RF721-40-B5-G
700 Series 40:1 Ratio G Assembly Single Reduction Worm Gear Reducer Without Base
Item #101870656
- 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
| Output Torque @ RPM | 785 in lb @ 1150 rpm, 876 in lb @ 1750 rpm |
| Ratio | 40:1 |
| Use With | 721 |
| Output Configuration | Left Output |
| Output Torque Rating Range [Max] | 999 lb-in, 109 Nm |
| Max. Overhung Load @ 1750 rpm | 700 lb/in |
| Style | Right Angle |
| Base to Centerline of Input Shaft | 4 11/32 in |
| Housing Material | Cast Iron |
| Input Configuration | C-Face Coupled |
| Base to Shaft Center Height w/Std. Base Kit | 4.81 in |
| Motor Application | General Purpose |
| Max. Input HP @ 100 rpm | 0.074 hp |
| Output (Shaft or Bore) Size | 1 in |
| Bolt Centers w/ Vertical "J" Base Kit (in) | 8.63 x 2.63 |
| Input Motor HP | 0.75 |
| Base Mounting Attachment | No Base |
| Rated Efficiency | 75% |
| Family Name | RF |
| Input HP @ RPM | 0.49 hp @ 1150 rpm, 0.81 hp @ 1750 rpm |
| Max. Thrust Load @ 1150 rpm | 700 lb/in |
| Frame Size | 56C |
| Torque Out @ 1750 rpm | 876 in lb |
| Max. Overhung Load @ RPM | 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm |
| Bolt Centers w/ Std. Base Kit (in) | 6 3/8 x 4 11/16 |
| Keyway Size | 3/16 x 3/32 |
| Output Bore Shaft Dia. | 1 in |
| Box Width | 5 3/16 in |
| Output Torque Rating Range [Min] | 750 lb-in, 85 Nm |
| Output Speed | 43.8 rpm |
| Input (Shaft or Bore) Size | 5/8 in |
| Center Distance Code | 721 |
| Max. Thrust Load @ RPM | 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm |
| Output Shaft | Solid |
| Torque Out @ 1150 rpm | 785 in lb |
| Box Length | 6 in |
| Center Distance | 2.0625 in |
| Thermal Input Horsepower @ 1750 RPM | N/A |
| Motor Frame Size | B556C |
| Material | Cast Iron, Standard Paint |
| Shaft Assembly Code | G |
| Lubrication | None |
| Media Mapping Output | G |
| Output Torque | 876 lb-in |
| Input Power Rating | 0.81 hp, 0.604 kW |
| Washdown Duty | No |
| Base to Shaft Center Height w/Vert. "J" Base Kit | 3.94 in |
| Bore Code | B5 |
| Fan Cooled | No |
| Motor HP | 1/2 hp |
| Worm Position | Universal |
| Bolt Center | 5 in x 2 7/8 in |
| Bolt Center Length x Bolt Center Width | 5 in x 2 7/8 in |
| Base to Shaft Center Height w/Low Vert. Base Kit | 3.13 in |
| Base to Centerline of Output Shaft | 2 9/32 in |
| Series | 700 |
| Media Mapping Style | RF |
| Output RPM @ Input RPM | 44 rpm @ 1750 rpm |
| Standard | AGMA Service Class I |
| Base to Shaft Center Height w/High Vert. Base Kit | 4.88 in |
| Output RPM @ 1750 rpm Input | 43.75 rpm |
| HP @ RPM | 0.3333333 hp @ 1200 rpm, 0.5 hp @ 1800 rpm |
| Frame | 56C |
| Reduction Type | Single |
| Bolt Centers w/ Vertical Base Kits (in) | 8 3/8 x 4 7/8 |
| Box Height | 6 3/8 in |
| Weight | 36.1 LB |
| EAN or UPC | 781711527139 |
