42STH38-1684B - 1.8 Degree - 1.68A Stepper - 51:1 Gearbox
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.
|
Motor Properties |
|
|
Motor Type |
Bipolar Stepper |
|
Manufacturer Part Number |
42STH38-1684B / 36JXS60K51 |
|
Step Angle |
0.035° |
|
Step Accuracy |
± 5 % |
|
Holding Torque |
48 kg·cm |
|
Rated Torque |
48 kg·cm |
|
Maximum Motor Speed |
20 RPM |
|
Electrical Properties |
|
|
Recommended Voltage |
24 V DC |
|
Rated Current |
1.7 A |
|
Coil Resistance |
1.7 Ω |
|
Phase Inductance |
3.2 mH |
|
Physical Properties |
|
|
Shaft Diameter |
8 mm |
|
Rear Shaft Diameter |
3.9 mm |
|
Mounting Plate Size |
NEMA - 17 |
|
Weight |
564 g |
|
Number of Leads |
4 |
|
Wire Length |
300 mm |
|
Gearbox Properties |
|
|
Gearbox Type |
Planetary |
|
Gear Ratio |
50 4397⁄4913 : 1 |
|
Backlash Error |
1 1⁄2° |
|
Maximum Strength of Gears |
48 kg·cm |
|
Shaft Maximum Axial Load |
49.1 N |
|
Shaft Maximum Radial Load |
98.1 N |
