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