Page 20 of catalogue Recirculating bearings of PM Bearings B.V.

5.5 Installation Procedure No. 2 for DS and PNUA type Operating condition: high accuracy and rigid motion when subjected to vibrations and impact loads. Use on two sides fitting edges and setpush Screws between bed and rail. The reference rail carriages using one fitting edge of table, carriages using push setscrews. Table is screwed onto the carriage from above. Assembly Reference Rail 1. The recirculating bearings are coated with anti-corrosion oil. Before assembly, clean the locating and support sides of the rails, carriages, bed and table with a clean cloth. After this slightly oil these surfaces with a spindle oil. 2. Carefully place the rail on the mounting surface. Check the bolt engagements when inserting the Bolts into the mounting holes. Carefully press the rail against the fitting edge using the push setscrews as shown in figure 5.4. 3. Tighten the attachment bolts with a torque Wrench to the specified torque starting alternately from the rail centers. See table for specified torque. For multi-section rails, ensure flush rail surfaces at Joints. In case of components are used for replacements see assembly procedure nr. 4 at page 21. Otherways go to step 4. Assembly Second Rail 4. Lightly fix the second rail parallel to the reference rail on to the bed in the same way as in step 2. When the rail is parallel to the reference rail, tighten the attachment bolts in sequence from one end to the other to the specified torque. Assembly Carriages on to the Table 5. Check the location of the attachement holes in the table for the carriages. Move all carriages in positioning and place the table carrefully on them. Figure 5.5. 6. Tighten the lateral push setscrews on the table to press the fitting edge of the carriages to the fitting edge of the table. Figure 5.6. Figure 5.6 Tightening of the table 7. Tighten the table to the carriages on the reference rail using the torque wrench to the specified torque. 8. Fix one of the carriages of the second rail correctly to the table and leave other carriages temporarly tightened with the attachment bolts. 9. Move the carriage slowly manually forward and backward. 10. Tighten all attachment bolts of the carriages uniformly which are temporarly tightened to the table.

Figure 5.4 Use of push setscrews

Figure 5.5 Placement of the table

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