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- Cast Iron Material
- 78 Teeth
- 10 Diametral Pitch
- 8.00 in Outside Diameter
- 14.5 Pressure Angle
description
- Boston Gear change gears are used primarily on machine tools to provide different cutting speeds while using a constant speed input. All Boston Gear change gears are manufactured with a double key to accept the compound steel bushings that connect two gears together, allowing them to spin on an intermediate shaft. The change gears we stock range from 20-tooth through 128-tooth gears, in one tooth increments, depending upon the diametrical pitch, for a nearly infinite number of ratio possibilities.
| Bore Size | 1.25 in |
| No. of Teeths | 78 |
| Material | Cast Iron |
| Torque at 1800 RPM | N/A |
| Bushing Series | Ga |
| Torque at 1200 RPM | N/A |
| Hub Dia. | 3.12 in |
| Torque at 200 RPM | 958 lb/in |
| Torque at 600 RPM | 541 lb/in |
| Pitch Diameter | 7.8 in |
| No. of Teeth | 78 |
| Hardened Teeth | Without Hardened Teeth |
| Face Width | 1 in |
| Keyway | Double Keyway 180° Apart |
| O.D. | 8 in |
| Set Screw | None |
| Pressure Angle | 14 1/2 degrees |
| Torque at 900 RPM | N/A |
| Torque at 300 RPM | 803 lb/in |
| Rated Torque [Max] | 850.8 @ 300 rpm |
| Length Through Bore | 2 in |
| Pitch Dia. | 7.8 in |
| Diametral Pitch | 10 |
| Outside Dia. | 8 in |
| Bore Dia. | 1.25 in |
| Weight | 6.001 LB |
| EAN or UPC | 781711113806 |
