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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.
| Max. Thrust Load @ 1150 rpm | 500 lb/in |
| Output Bore Shaft Dia. | 0.875 in |
| Output Shaft | Solid |
| Max. Overhung Load @ RPM | 500 lb/in @ 1150 rpm, 500 lb/in @ 1750 rpm |
| Max. Thrust Load @ RPM | 500 lb/in @ 1150 rpm, 500 lb/in @ 1750 rpm |
| Torque Out @ 1750 rpm | 590 in lb |
| Keyway Size | 3/16 x 3/32 |
| Reduction Type | Single |
| Frame | 56C |
| Box Length | 5 1/2 in |
| Rated Efficiency | 84% |
| Worm Position | Universal |
| Output Torque Rating Range [Min] | 500 lb-in, 60 Nm |
| Input HP @ RPM | 0.58 hp @ 1150 rpm, 0.97 hp @ 1750 rpm |
| Base to Shaft Center Height w/Low Vert. Base Kit | 3 in |
| Torque Out @ 1150 rpm | 525 in lb |
| Output Torque @ RPM | 525 in lb @ 1150 rpm, 590 in lb @ 1750 rpm |
| Center Distance Code | 718 |
| Base to Shaft Center Height w/High Vert. Base Kit | 4.38 in |
| Family Name | RF |
| Bolt Centers w/ Std. Base Kit (in) | 5 3/4 x 4 1/2 |
| Base to Centerline of Output Shaft | 2 1/16 in |
| Input Configuration | C-Face Coupled |
| Housing Material | Cast Iron |
| Output Torque | 590 lb-in |
| Motor Frame Size | B556C |
| Output Torque Rating Range [Max] | 749 lb-in, 84 Nm |
| Max. Input HP @ 100 rpm | 0.08 hp |
| Fan Cooled | No |
| HP @ RPM | 0.75 hp @ 1800 rpm |
| Output RPM @ Input RPM | 88 rpm @ 1750 rpm |
| Base Mounting Attachment | No Base |
| Center Distance | 1.75 in |
| Style | Right Angle |
| Bolt Centers w/ Vertical Base Kits (in) | 7.38 x 4.00 |
| Material | Cast Iron, Standard Paint |
| Input (Shaft or Bore) Size | 5/8 in |
| Thermal Input Horsepower @ 1750 RPM | N/A |
| Series | 700 |
| Ratio | 20:1 |
| Output RPM @ 1750 rpm Input | 87.5 rpm |
| Box Width | 5 1/32 in |
| Box Height | 5 3/4 in |
| Output (Shaft or Bore) Size | 7/8 in |
| Washdown Duty | No |
| Output Speed | 87.5 rpm |
| Max. Overhung Load @ 1750 rpm | 500 lb/in |
| Input Power Rating | 0.97 hp, 0.723 kW |
| Base to Shaft Center Height w/Std. Base Kit | 4.38 in |
| Media Mapping Style | RF |
| Shaft Assembly Code | J |
| Motor HP | 3/4 hp |
| Use With | 718 |
| Lubrication | None |
| Base to Shaft Center Height w/Vert. "J" Base Kit | 3.5 in |
| Bolt Center | 4 3/16 in x 2 3/4 in |
| Bolt Center Length x Bolt Center Width | 4 3/16 in x 2 3/4 in |
| Bolt Centers w/ Vertical "J" Base Kit (in) | 7.63 x 2.50 |
| Input Motor HP | 1 |
| Media Mapping Output | J |
| Bore Code | B5 |
| Output Configuration | Right Output |
| Frame Size | 56C |
| Standard | AGMA Service Class I |
| Base to Centerline of Input Shaft | 3 13/16 in |
| Motor Application | General Purpose |
| Weight | 27.1 LB |
| EAN or UPC | 781711526798 |
