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Rotary indexer, Manipulator, Turntable, Indexing ring, Handling module
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4 years guarantee *1st reason 3rd reason Wear and tear Thermal expansionWe do not use any friction bearings, all bearings are antifrictional, running in oil. Our plate cam followers are fitted with needle roller bearings, this ensures that we can guarantee full precision, even after 30 million indexing motions. Our cam consists of highly tempered, surface hardened steel and our housing is cast iron. The coefficient of thermal expansion is the same for steel and cast iron. When the housing expands due to the thermal influences, the cam centre - the area where positioning takes place - remains in exactly the same position due to the cam expanding by the same amount. This is different with aluminium housings, which are partly used by our competitors. In these circumstances the housing expands more than the cam. This results in the plate turning and noticeably leaving its original position! 2nd reason Sophisticated construction We manufacture our drive cam followers as large as possible, this ensures that we use the total length of the cam. For example on our 6-station unit we have 3 or 4 followers engaged with the cam at the same time, these followers are evenly distributed between the acceleration and deceleration forces. Example: TC 320 T L1 = 96 mm L2 = 145,5 mm T = 20 °C A plate diameter of 1200 mm with an aluminium housing and a temperature difference of 20 °C would register a counter clockwise positional variation of 0.182 mm on the circumference. 402/2008 |
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