Why GR 110 Compressor input shaft oil seal leakage?

by Richard
(Ontario, Canada)

Hi, we have a GR110 compressor which leaks oil at the input shaft seals. It has been repaired twice with no improvement. It seems pressure may be building up behind the seals, leading to the failure. The unit appears to function normally otherwise.


Thanks

Comments for Why GR 110 Compressor input shaft oil seal leakage?

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Jul 18, 2016
Seal Type
by: Utallis

Is it a lip seal? Is the seal in the correct way?

Have you also replaced the bushing the oil seal runs on? Laugh... meant cannot be an issue with it being flange mounted.

Jul 05, 2016
GR 110
by: Doug in s.d.ca

OK.
So, are the seals OEM, and is the oil you are using the recommended oil?
Maybe the oil is eating the seals...?

Jul 05, 2016
GR 110
by: Richard

It was a new unit to us, I installed the seals. The motor is directly mounted to the compressor so I don't think misalignment is an issue. The bearings seem fine. It seems like pressure is building up in the gearbox leading to the seal failure?

Jun 21, 2016
GR 110
by: Doug in s.d.ca

A few things -

Is this new or used?

Who installed it?

Who did the seals?

My thoughts so far are possible mis-alignment of the motor/shaft stressing bearings, and/or the bearings may be shot.

Jun 20, 2016
GR110
by: Richard

Yes, the power input shaft, which through gearing drives the screws.

Thanks.

Jun 17, 2016
clarification
by: Doug in s.d.ca

By input end, you mean the power input / driven end of the screw?

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