Frequently Asked Questions on couplings

Will a protective cover improve the performance of a universal joint?
Can the bore of a Panamech or bellows coupling be modified?

1. Will a protective cover improve the performance of a universal joint?

An universal joint can function without protection, but does need regular lubrication.

For many applications, a daily lubrication is recommended. The act of protecting the joint by a cover filled with grease will greatly improve its working, and increase its life span by up to five times.

Greases such as Alvania EP2 or Mobiplex 46 are ideal for this use.

2. Can the bore of a Panamech or bellows coupling be modified?

HPC has various Panamech or Bellows couplings with predefined bores in our catalogue.

If none of these are suitable for your application, you should be aware that we also stock pilot bored Panamech couplings. We can therefore offer you a coupling adapted to your needs.

In the case of a real emergency, you can even rebore these items yourself. There are however a few precautions to take, especially regarding couplings with clamp fittings. Firstly the concentricity of the piece should be verified before machining: a fault in the concentricity could lead to problematic vibrations. When dealing with clamps, position a spacer in the slit and tighten the clamp to machine a perfectly circular bore. You should never try to make a keyway. This could result in serious damage to the coupling. Note, we are not able to accept the return of a coupling which has been altered by the purchaser.

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