42STH38-1684B - 1.8 Degree - 1.68A Stepper - 51:1 Gearbox, 3328_0
This bipolar stepper with a rear shaft and a planetary gearbox has a 0.035° step angle and 48 kg·cm of torque at low speeds.
This NEMA-17 motor has an integrated Planetary gearbox with a 504397/4913:1 ratio. It comes with the rear shaft exposed, so you can mount an encoder or shaft coupler.
At the output of the gearbox, the step angle is approximately 0.035°. When using the step angle in calculations, you should derive the exact step angle by dividing 1.8° by the gearbox reduction ratio.
At 1.7 Amps, this stepper motor can produce a maximum torque of 180 kg-cm. However, the gearbox is only rated for 48 kg-cm of continuous torque.
Loading this gearbox stepper beyond the torque rating of the gearbox will shorten its useful life.
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Motor Properties |
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Motor Type |
Bipolar Stepper |
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Manufacturer Part Number |
42STH38-1684B / 36JXS60K51 |
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Step Angle |
0.035° |
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Step Accuracy |
± 5 % |
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Holding Torque |
48 kg·cm |
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Rated Torque |
48 kg·cm |
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Maximum Motor Speed |
20 RPM |
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Electrical Properties |
|
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Recommended Voltage |
24 V DC |
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Rated Current |
1.7 A |
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Coil Resistance |
1.7 Ω |
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Phase Inductance |
3.2 mH |
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Physical Properties |
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Shaft Diameter |
8 mm |
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Rear Shaft Diameter |
3.9 mm |
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Mounting Plate Size |
NEMA - 17 |
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Weight |
564 g |
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Number of Leads |
4 |
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Wire Length |
300 mm |
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Gearbox Properties |
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Gearbox Type |
Planetary |
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Gear Ratio |
50 4397⁄4913 : 1 |
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Backlash Error |
1 1⁄2° |
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Maximum Strength of Gears |
48 kg·cm |
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Shaft Maximum Axial Load |
49.1 N |
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Shaft Maximum Radial Load |
98.1 N |
