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Boston Gear
SSF721-20A-B5-J
700 Series C-Face Quilled, Hollow Output Cast Stainless Reducer
Item #103309163
- 2 1/16" Center Distance
- 20:1 Ratio
- 56C Frame
- C-Face Quilled Input
- Right Output
applications
- Washdown
- Food processing equipment
- Chemical processing
- Pharmaceutical industry
features
- Housing, bearing carrier and flange are made from 316 cast stainless steel to withstand hostile environments
- Rugged housing fabricated of fine-grained cast iron for maximum strength and greater precision during worm and gear alignment
- Housing is straddle milled top and bottom for precise alignment
- Internal baffles ensure positive, leak-free venting
- Internal pressure equalization system allows gearbox to operate without the use of conventional pressure vents
- Lubricated for life with Mobil® SHC634 synthetic oil for wide temperature ranges
- Large oil reservoir provides efficient heat dissipation and lubrication for longer life
- 304 stainless steel output shaft
- All stainless steel hardware
- Output bearing carries o-ring sealed
- Double lipped oil seals
- PosiVentâ„¢ system eliminates breather vent and keeps contaminants
- 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 |
| Output (Shaft or Bore) Size | 1 in |
| Bolt Center Length x Bolt Center Width | 5 in x 2 7/8 in |
| Output RPM @ Input RPM | 88 rpm @ 1750 rpm |
| Output Torque @ RPM | 782 in lb @ 1150 rpm, 892 in lb @ 1750 rpm |
| Ratio | 20:1 |
| Center Distance | 2 1/16 in |
| Reduction Type | Single Reduction |
| Base | No |
| Frame | 56C |
| Bolt Center | 5 in x 2 7/8 in |
| Family Name | SSF |
| Box Length | 6 in |
| Input HP @ RPM | 0.86 hp @ 1150 rpm, 1.4 hp @ 1750 rpm |
| Output RPM @ 1750 rpm Input | 87.5 rpm |
| HP @ RPM | 1 hp @ 1800 rpm |
| Frame Size | 56C |
| Torque Out @ 1750 rpm | 892 in lb |
| Torque Out @ 1150 rpm | 782 in lb |
| Bore Code | B5 |
| Worm Position | Universal |
| Output Configuration | Right Output |
| Max. Thrust Load @ RPM | 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm |
| Max. Overhung Load @ RPM | 700 lb/in @ 1150 rpm, 700 lb/in @ 1750 rpm |
| Max. Overhung Load @ 1750 rpm | 700 lb/in |
| Max. Thrust Load @ 1150 rpm | 700 lb/in |
| Input Configuration | C-Face Quilled |
| Washdown Duty | Yes |
| Box Width | 5 3/16 in |
| Lubrication | Mobil SHC634 Synthetic |
| Fan Cooled | No |
| Shaft Assembly Code | J |
| Box Height | 6 3/8 in |
| Base to Centerline of Input Shaft | 4 11/32 in |
| Housing Material | 316 Stainless Steel |
| Use With | 721 |
| Thermal Input Horsepower @ 1750 RPM | N/A |
| Motor Application | Washdown Duty |
| Base to Centerline of Output Shaft | 2 9/32 in |
| Weight | 0.0 LB |
| EAN or UPC | 781711340912 |
