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Boston Gear
RF718-20-B5-G
700 Series 20:1 Ratio G Assembly Single Reduction Worm Gear Reducer Without Base
Item #101872193
- 1 Input Motor hp
- 700 Series
- 1.75 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
| Input (Shaft or Bore) Size | 5/8 in |
| Max. Thrust Load @ 1150 rpm | 500 lb/in |
| Base Mounting Attachment | No Base |
| Keyway Size | 3/16 x 3/32 |
| Input Configuration | C-Face Coupled |
| Output Configuration | Left Output |
| Fan Cooled | No |
| Output RPM @ 1750 rpm Input | 87.5 rpm |
| Shaft Assembly Code | G |
| Output Torque Rating Range [Min] | 500 lb-in, 60 Nm |
| Motor Application | General Purpose |
| Worm Position | Universal |
| Bolt Center | 4 3/16 in x 2 3/4 in |
| Base to Shaft Center Height w/Std. Base Kit | 4.38 in |
| Center Distance | 1.75 in |
| Box Width | 5 1/32 in |
| Media Mapping Style | RF |
| Family Name | RF |
| Max. Overhung Load @ 1750 rpm | 500 lb/in |
| Box Length | 5 1/2 in |
| Input Motor HP | 1 |
| Output Speed | 87.5 rpm |
| Housing Material | Cast Iron |
| Output Bore Shaft Dia. | 0.875 in |
| Washdown Duty | No |
| Input HP @ RPM | 0.58 hp @ 1150 rpm, 0.97 hp @ 1750 rpm |
| Style | Right Angle |
| Thermal Input Horsepower @ 1750 RPM | N/A |
| Series | 700 |
| Box Height | 5 3/4 in |
| Standard | AGMA Service Class I |
| Bolt Centers w/ Vertical Base Kits (in) | 7.38 x 4.00 |
| Bolt Centers w/ Vertical "J" Base Kit (in) | 7.63 x 2.50 |
| Center Distance Code | 718 |
| Output (Shaft or Bore) Size | 7/8 in |
| Base to Shaft Center Height w/Low Vert. Base Kit | 3 in |
| Frame Size | 56C |
| Frame | 56C |
| Motor Frame Size | B556C |
| Max. Input HP @ 100 rpm | 0.08 hp |
| HP @ RPM | 0.75 hp @ 1800 rpm |
| Max. Thrust Load @ RPM | 500 lb/in @ 1150 rpm, 500 lb/in @ 1750 rpm |
| Motor HP | 3/4 hp |
| Base to Centerline of Input Shaft | 3 13/16 in |
| Base to Shaft Center Height w/High Vert. Base Kit | 4.38 in |
| Bolt Center Length x Bolt Center Width | 4 3/16 in x 2 3/4 in |
| Max. Overhung Load @ RPM | 500 lb/in @ 1150 rpm, 500 lb/in @ 1750 rpm |
| Base to Centerline of Output Shaft | 2 1/16 in |
| Output RPM @ Input RPM | 88 rpm @ 1750 rpm |
| Output Torque @ RPM | 525 in lb @ 1150 rpm, 590 in lb @ 1750 rpm |
| Reduction Type | Single |
| Ratio | 20:1 |
| Torque Out @ 1150 rpm | 525 in lb |
| Use With | 718 |
| Lubrication | None |
| Bore Code | B5 |
| Media Mapping Output | G |
| Rated Efficiency | 84% |
| Material | Cast Iron, Standard Paint |
| Torque Out @ 1750 rpm | 590 in lb |
| Output Torque Rating Range [Max] | 749 lb-in, 84 Nm |
| Output Shaft | Solid |
| Bolt Centers w/ Std. Base Kit (in) | 5 3/4 x 4 1/2 |
| Base to Shaft Center Height w/Vert. "J" Base Kit | 3.5 in |
| Output Torque | 590 lb-in |
| Input Power Rating | 0.97 hp, 0.723 kW |
| Weight | 27.1 LB |
| EAN or UPC | 781711526774 |
