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- 20 Diametral Pitch
- 20⁰ Pressure Angle
- 84 Teeths
- Cast Iron Material
description
- Boston Gear spur gears are designed to transmit motion and power between parallel shafts. The different styles offered include spur, gear rack, pinion wire, stem pinions, and internal gears, and most come with a selection of bore diameters, keyways, and setscrews to accommodate a wide variety of application requirements. They are available in plastic, non-metallic, brass, steel, and cast iron and are manufactured in a variety of styles, including plain, web, web with lightening holes, and web with spokes. Many are available with or without hubs.Boston Gear manufactures both 14 1/2° and 20° PA, involute, full-depth system gears. While 20° PA is generally recognized as having a higher load-carrying capacity, 14 1/2° PA gears are used extensively because of lower backlash and smoother, quieter operation.
features
- More cost effective, quieter running and metallic options
- Four ball wear test 40 kg: 63 mm
- Reliability from steel, cast iron and brass
- Parallel shaft applications
- Base oil viscosity: 500 SUS @ 100 °F
| Material | Cast Iron |
| Torque at 600 RPM | 134 lb/in |
| Type | B |
| Diametral Pitch | 20 |
| O.D. | 4.23 in |
| Hub Dia. | 1.38 in |
| Hardened Teeth | Without Hardened Teeth |
| Face Width | 0.5 in |
| Set Screw | No |
| Pitch Dia. | 4.2 in |
| Bore Type | Minimum Plain Bore |
| Torque at 300 RPM | 181 lb/in |
| Torque at 900 RPM | 106 lb/in |
| Outside Dia. [Min] | 4.3 in |
| Style | Hub |
| Keyway | w/o Keyway, w/o Setscrew |
| Torque at 200 RPM | 206 lb/in |
| Pressure Angle | 20 degrees |
| Rated Torque [Max] | 106 @ 900 rpm |
| Pitch Diameter | 4.2 in |
| No. of Teeth | 84 |
| Outside Dia. | 4.3 in |
| Origin | Reborable |
| Torque at 1200 RPM | 87.8 lb/in |
| Torque at 1800 RPM | N/A |
| Bore Size | 0.625 in |
| Bore Dia. | 0.625 in |
| Length Through Bore | 1.125 in |
| No. of Teeths | 84 |
| Weight | 1.401 LB |
| EAN or UPC | 781711105566 |
