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When used with Boston Gear worms, Boston Gear worm gears provide effective power transmission in applications requiring high-ratio speed reduction in a limited space using right angle (90°), non-intersecting shafts. They are also the smoothest, quietest form of gearing when properly applied. Boston Gear offers worm gears manufactured from a variety of materials, such as acetal, minlon, bronze, and cast iron to suit your application requirements. Note: Because the efficiency of a worm gear drive depends on the lead angle and number of starts on the worm, the ratio should be kept low. To run properly, worms and worm gears operating together must have the same diametrical pitch and threads.Mating Worm (Hard)48 DP, Double ThreadRatio40:1Product FamilyWorm GearsDiametrical Pitch48O/P RatingNot RatedProduct DescriptionWorm Gear, 48 DP, 20 PA, 80 Teeth, RH, BronzeAltra Master No.30217580MaterialBronzeBore Size0.250UPC781711134962HandRight HandWeight0.131Flush Face To WM C/L0.078Center Distance1.000Family Id30,065Gear OD1.72Hub Diameter0.630Unit Of MeasureEnglish
| Ambient temperature (°C) | 40 |
| CE | N |
| Country of origin | Mexico |
| CSA | Y |
| Current | 0.40 A |
| Drive end bearing | Sleeve |
| Duty | Air over |
| Electrical type | Permanent split capacitor |
| Enclosure | Open air over |
| FASCO | 7190-2255 |
| Frame | 3.3 |
| Frame length | 3.40 in |
| Frame Material | Steel |
| Frame material | Steel |
| Frequency | 50 Hz |
| Insulation class | B |
| Mounting | Extended studs |
| Number of speeds | 1 |
| Opp drive end bearing | Sleeve |
| Output HP | 1/16 HP |
| Output KW | 0.04 kW |
| Overall Length | 5.57 in |
| Packaged height | 5 in |
| Packaged length | 8 in |
| Packaged width | 5.63 in |
| Phase | 1 |
| Poles | 4 |
| Rotation | Clockwise shaft end |
| Service factor | 1 |
| Shaft diameter | 0.313 in |
| Shaft Diameter | 0.313 in |
| Shaft extension | 1.69 in |
| Shaft type | Flat |
| Speed | 1300/1650 RPM |
| Starting method | Across the line |
| Thermal protection | Thermally protected |
| UL | Recognized |
| Voltage | 208-230 V |