Frequently Asked Questions

Q: What is Rockwell hardness? What does 58 to 62 Rockwell C mean?
A: Rockwell is an internationally recognised hardness scale. Rockwell C (or RHC) is used for measuring the hardness of steels. 58 to 62 Rockwell is close to the maximum hardness that can be achieved by hardening conventionally machined steels.

Q: Why should I use Acti Bush bushes?
A: Acti Bush bushes and pins are New Zealand made to the highest standards, they have been proven to outlast many OEM pins and bushes in the harshest conditions.

Q: My local engineer can make pins and bushes. What makes you so special?
A: Acti-Bush bushes are heat treated to harden them to 58 to 62 Rockwell C. This is done at a specialised heat treatment facility and takes a turnaround of several days. For this reason we stock hardened bushes for immediate delivery. If anyone offers you same day made bushes they will not be properly hardened and will not last.

Q: Do you guarantee your pins and bushes?
A: As we cannot control the application, installation and conditions our pins and bushes are used under, we do not put a time guarantee on the performance of our pins and bushes. However we do stand 100% behind our products and will replace any defective components.

Q: I have an old, worn out machine that requires new pins and bushes. Can you help?
A: If we can't supply you pins and bushes off the shelf, we can make you new ones to your specifications. Alternatively we may be able to machine your parts to accept standard size pins and bushes.

Q: The area where the seals fit has been damaged. How do I fix this?
A: We can build up and re-machine your parts to repair the damage. This can be done on site or at our workshop. If time is critical or the machine is unable to be repaired we supply bushes with seals installed to keep the grease where it should be.

Q: Will fitting Acti Bush pins and bushes affect my machine's warranty?
A: Pins and bushes are wearing parts that are not usually covered under the machine manufacturer's warranty. Replacement of pins and bushes with Acti Bush parts should not affect your warranty. However, please refer to your warranty exclusions and conditions.