System Adjustment Adjusting method for Through Fixing Eccentric bearings
To get the best performance from a HepcoMotion ring slide system, it must be correctly assembled and adjusted. To fit a carriage, the concentric bearings should be fully tightened and the eccentric bearings semi-tightened and rotated to their outermost position. The carriage may then be introduced to the slide as shown below. Both eccentric bearings should be rotated in the direction of the arrow shown opposite, until the bearings captivate the slide with minimal preload. To fit a ring slide into encircling bearings, all eccentrics should be fully adjusted away from the V edge to permit the ring to be engaged. The eccentrics may then be adjusted onto the V edge as for carriages.
Hepco Adjusting Wrench
Concentric Bearing
The correct condition of adjustment should be assessed by rotating the bearings by holding them between forefinger and thumb while preventing the ring slide or carriage from moving such that the bearings skid against the slide. A uniform degree of resistance should be felt, but the bearings should be able to be rotated without difficulty. Once adjusted in this manner, the eccentric bearing fixing nuts should be fully tightened to the relevant torque value shown in the table below while preventing the bearing stud from further rotation, by means of the specified Hepco Adjusting Wrench. A further check should be made to ensure the correct condition of adjustment.
It should be noted that the load/life calculations assume a light preload, as is described above. Systems which are preloaded more heavily than this will suffer a reduction in the life as compared with that predicted by the calculations.
In some circumstances, it may be difficult to gain access to the hexagonal flange for system adjustment. In these situations it is possible to adjust by rotating the eccentric bearing using an allen key located in the hexagonal socket in the end of the stud and tightening the fixing nut at the same time using the Hepco socket tool, see table below. Due to the reduced control associated with this method, it is only recommended when the adjusting wrench method above is not possible.
When adjusting fixed center carriages the lubricators should first be removed in order to gain access. When adjusting bogie carriages, the steps outlined in the adjustment procedure on 47, should be observed. In cases where an assembled system is supplied, the carriages will be supplied pre-adjusted.
Alternative adjusting method using end socket in journal
Hepco Socket Tool
Adjusting method for Blind Hole Eccentric bearings
Bearing Adjusting Tools and Tightening Torques
When ordering individual components for the first time an Adjusting Wrench or Socket Tool should be ordered, these are only available from Bishop-Wisecarver.
Bearing Ø 1 13
Adjusting Wrench
Socket Tool
Fixing Nut Torque 58 AT13 - 2 Nm 18 AT18 RT6 7 Nm 25 AT25 RT8 18 Nm 34 AT34 RT10 33 Nm 54 AT54 RT14 90 Nm
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