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Boston Gear
RF718-20-B5-J
700 Series 20:1 Ratio J Assembly Single Reduction Worm Gear Reducer Without Base
Item #101835845
- 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
- Mounting of speed reducers in overhead positions may be hazardous
- Use of external guides or supports is strongly recommended for overhead mounting.
| Output Speed | 87.5 rpm |
| Reduction Type | Single |
| Lubrication | None |
| Ratio | 20:1 |
| Motor Frame Size | B556C |
| Base to Centerline of Input Shaft | 3 13/16 in |
| Standard | AGMA Service Class I |
| Max. Overhung Load @ 1750 rpm | 500 lb/in |
| Max. Thrust Load @ 1150 rpm | 500 lb/in |
| Torque Out @ 1150 rpm | 525 in lb |
| Media Mapping Style | RF |
| Output Torque Rating Range [Min] | 500 lb-in, 60 Nm |
| Fan Cooled | No |
| Max. Input HP @ 100 rpm | 0.08 hp |
| Output Torque Rating Range [Max] | 749 lb-in, 84 Nm |
| Media Mapping Output | J |
| Thermal Input Horsepower @ 1750 RPM | N/A |
| Frame | 56C |
| Keyway Size | 3/16 x 3/32 |
| Center Distance | 1.75 in |
| HP @ RPM | 0.75 hp @ 1800 rpm |
| Torque Out @ 1750 rpm | 590 in lb |
| Output RPM @ Input RPM | 88 rpm @ 1750 rpm |
| Output Shaft | Solid |
| Bolt Center | 4 3/16 in x 2 3/4 in |
| Base to Shaft Center Height w/Low Vert. Base Kit | 3 in |
| Max. Overhung Load @ RPM | 500 lb/in @ 1150 rpm, 500 lb/in @ 1750 rpm |
| Box Width | 5 1/32 in |
| Style | Right Angle |
| Box Length | 5 1/2 in |
| Base to Shaft Center Height w/High Vert. Base Kit | 4.38 in |
| Housing Material | Cast Iron |
| Rated Efficiency | 84% |
| Output Torque @ RPM | 525 in lb @ 1150 rpm, 590 in lb @ 1750 rpm |
| Motor Application | General Purpose |
| Input HP @ RPM | 0.58 hp @ 1150 rpm, 0.97 hp @ 1750 rpm |
| Base Mounting Attachment | No Base |
| Base to Centerline of Output Shaft | 2 1/16 in |
| Output Torque | 590 lb-in |
| Output (Shaft or Bore) Size | 7/8 in |
| Frame Size | 56C |
| Washdown Duty | No |
| Output RPM @ 1750 rpm Input | 87.5 rpm |
| Output Bore Shaft Dia. | 0.875 in |
| Bore Code | B5 |
| Material | Cast Iron, Standard Paint |
| Use With | 718 |
| Center Distance Code | 718 |
| Box Height | 5 3/4 in |
| Bolt Centers w/ Std. Base Kit (in) | 5 3/4 x 4 1/2 |
| Base to Shaft Center Height w/Std. Base Kit | 4.38 in |
| Shaft Assembly Code | J |
| Max. Thrust Load @ RPM | 500 lb/in @ 1150 rpm, 500 lb/in @ 1750 rpm |
| Input Configuration | C-Face Coupled |
| Motor HP | 3/4 hp |
| Worm Position | Universal |
| Output Configuration | Right Output |
| Input (Shaft or Bore) Size | 5/8 in |
| Bolt Centers w/ Vertical Base Kits (in) | 7.38 x 4.00 |
| Input Power Rating | 0.97 hp, 0.723 kW |
| Bolt Centers w/ Vertical "J" Base Kit (in) | 7.63 x 2.50 |
| Bolt Center Length x Bolt Center Width | 4 3/16 in x 2 3/4 in |
| Base to Shaft Center Height w/Vert. "J" Base Kit | 3.5 in |
| Family Name | RF |
| Input Motor HP | 1 |
| Series | 700 |
| Weight | 27.1 LB |
| EAN or UPC | 781711526798 |
