• 20/03/2016 - Continued developement of the G30P grinding system results in new system shipped to Turkey
  • 18/07/2017 - New class of very high speed, 150KG capacity, C320 manipulators shipped to Turkey
  • 26/04/2018 - Clansman Dynamics launches Clansman USA
  • 27/11/2016 - Continued developement in grinding automation results in Planar grinding and automated riser stub removal

Roller Bearings


Why roller bearings?


Clansman Dynamics uses large spherical roller bearings and taper roller bearings throughout the range of machines.

One competitor uses PTFE spherical bushes. Another competitor uses a mixture of needle roller bearings, roller bearings and steel spherical bushes.


It is worth noting that one large Italian foundry which has destroyed a machine from one competitor and which has 4 limping machines from another has made a campaign change to replace spherical steel bushes not with PTFE spherical bushes which would have been a straight swap but has machined new parts with larger bores for roller bearings.


There is no denying that manipulators present a severe test of any bearing because of shock loadings, dirty environment and the fact there is not much more than a 90 degree movement on any joint.


However some facts are known:


  • We know that steel sphericals last about 9 - 18 months.
  • We know that needle roller bearings lose rollers, are less good for shocks than large rollers and store less grease between the rollers.
  • We know from information supplied by the bearing manufacturers, that even the theoretical life for PTFE spherical is very unsatisfactory.
  • We know that properly selected spherical roller bearings give a better result even than plain roller bearings because they self align.