Worm gear reducer GN 3975 can transmit high torque despite their very compact dimensions. They can readily be used for a multitude of applications, such as incline adjustments or to change the direction of shaft rotation.
The numerous fastening holes allow for simple mounting in any orientation or position. The parallel keys can take any angular positions.
Depending on the gear ratio, there may be no static self-braking between the worm screw and worm wheel, meaning that the worm wheel can be turned out of a resting state by a torque coming from the output end.
Housing
Worm screw, steel
Worm wheel, brass
Ball bearing
Temperature range:
-4 °F to +140 °F (-20 °C to +60 °C)
RoHS
| A | Output on one side |
| m1 | d1 ±0.0002 | Gear ratio i | b1 | b2 | b3 ±0.0006 | d2 +0.001 | d3 | d4 | d5 | h | l1 | l2 | l3 | l4 | t1 | t2 | t3 | t4 | m10 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.79 | 0.4724 | 13 | 15 | 18 | 23 | 30 | 40 | 65 | 1.38 | 0.16 | 0.1575 | 0.472 | 1.18 | 0.79 | 1.08 | 0.06 | 2.36 | 0.63 | 0.47 | 0.12 | 0.08 | 0.54 | 0.06 | 0.72 | 1.02 |
| m1 | d6* | d7 | d8* | m2 | m3 | m4 | m5 | m6 | m7 | m8 | m9 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.79 | M 4 | 0.17 | M 5 | 1.02 | 1.97 | 0.69 | 0.06 | 1.22 | 1.02 | 1.67 | 0.89 |
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Circumferential backlash at the drive shaft |
1° ± 0.5° |
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Shaft direction of rotation |
Any |
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Worm wheel set design |
Left-hand |
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Life expectancy (guide value) |
1,000 hours under full load and rotational speed of 500 rpm, |
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Show / Hide columns
Show / Hide columns
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*Input side speed, **at axial force = 0, ***at radial force = 0 |
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Do not exert any forces onto the housing or into the bearings during assembly. Use of the threaded holes d8 in the shaft is recommended. The use of a corresponding coupling is recommended to compensate for manufacturing-related shaft offsets and runout tolerances as well as for damping vibrations and shocks. |
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| Min | Max | Price |
|---|---|---|
| 1 | 9 | $422.39 |
| 10 | 24 | $387.19 |
| 25 | 49 | $352.00 |
| ≥ 50 | $316.80 |
Our service team is available from Monday to Friday between 7:30 AM and 5:00 PM Central Time: 800-877-8351
Attention Valued Customer,
Beginning June 15, 2024, we will implement a price adjustment. Some items will have a price decrease, while others will increase. The adjustment helps ensure our commitment to providing our customers with the best products and services.
We will honor current published prices through June 14, 2024.
Customers with pricing agreements will not be effected until annual pricing is reviewed.
Thank you
J.W. Winco
