Page 8 - Rheo-Line ODR

2 7 Main Bearing Replacement
The main bearings in in in in in the R-Line ODR machine will last for several years before needing to be be changed It IS highly recommended that the bearings are only changed by a a a a a fully trained engineer as there are several important elements of the the machine that will need to be be set up after the the bearings have been changed For more information please contact your service provider or Prescott Instruments 2 8 Link Arm Bearing Replacement
The Link arm bearings will be be checked at all service visits and changed when required by your service provider 2 9 Eccentric Change and Bearing Replacement
To change change the the angle of oscillation the the eccentric is changed with the bearing as as a a a a complete assembly This is is done
by removing the the link arm from the the oscillation eccentric and then slackening off the the the pinch bolt which holds the the the bearing of the the eccentric in in in place After undoing the the small screw which holds the the the eccentric on to to the the the motor shaft the the the eccentric complete with bearing can be be removed Fit the new eccentric onto the the motor shaft ensuring that the the screw is locating on to to the the round of the the motor shaft It is is essential that the ODR is is recalibrated after changing the oscillation eccentric The bearing can be be removed once the eccentric is away from the machine Bearing pullers or preferably a a a a press is required to remove the the eccentric bearing and note they are angular contact bearings so the replacement bearing bearing must be put on the correct way up The rotor height must be checked and adjusted as part
of the maintenance process a a a a height gauge (S60014)
is supplied with the the instrument spares To make the the adjustment the the the gauge is placed on the the the rotor open the the the door and below the the clamping cylinder there is a a a a screw with a a a a locking nut nut loosen the the nut nut with the the rotor unclamped but pressed down adjust the the screw toll the the rotor just just touches the the rotor height tool re-tighten the the nut Note it is very rare that this will will need to be be adjusted and it will will be be checked when the service engineer makes his visit 8 RHEO-LINE OSCILLATING DISC RHEOMETER SERVICE MANUAL
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