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GN 3975

Worm Gear Reducers

Housing Aluminum

GN 3975

Worm Gear Reducers
Worm Gear Reducers

GN 3975

Worm Gear Reducers
Worm Gear Reducers

Type

  • Type A: Output on one side

Housing

  • Aluminum
  • Sealed to prevent dust entry
  • Anodized, natural color AN

Worm screw, steel

Worm wheel, brass

Ball bearing

  • Steel
  • Sealed (sealing disks 2RS)

Temperature range: -20 °C to +60 °C

Worm gear reducers 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.

Circumferential backlash at the drive shaft1° ± 0.5°
Shaft direction of rotationAny
Worm wheel set designLeft-hand
Life expectancy (guideline)1.000 hours under full load at a rotational speed of 500 rpm,
assuming the gear box is operating for 20% of every 5 minutes
(1 minute of operation + 4 minutes break) at an ambient temperature of 20 °C
MaintenancePermanent lubrication with grease, maintenance-free
m1Gear ratioMax. input torque in Nm*Max. output torque in Nm*Input sideOutput sideEfficiency in %Selfbraking
at 100 min-1at 500 min-1at 1000 min-1at 100 min-1at 500 min-1at 1000 min-1Max. radial force in N**Max. axial force in N***Max. radial force in N**Max. axial force in N***
20132.11.81.515131120020050050056-
20151.51.311210825025050050052-
20181.10.90.7119725025050050055x
20230.90.70.5108625025050050050x
20300.60.50.48.575.535035050050045x
20400.350.310.315.54.8440040050050039x
20650.240.20.24.53.8350050050050029x

* Input side speed

** at axial force = 0

*** at radial force = 0

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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