LM Guide with Caged Ball for Ultra-low Waving in Running Characteristics
With the new SPH series THK offers a newly developed eight-row linear guide with Caged Ball that offers ultra-low waving during linear movements with standard dimensions compliant with the ISO standard.
Illustration 1 Eight-row LM Guide SPH with Caged Ball
With commercially available linear guides the guide carriage is loaded unevenly due to the changing number of load-bearing balls when exiting and entering the load zone, so that it deflects differently and results in a high degree of waviness during linear movements. In comparison the type SPH realizes ultra-low waving through its specific eight-groove design, making it suitable for applications where linear motion accuracy in the nanometer range is required.
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Illustration 2 Evaluation of waving accuracy
The LM Guide SPH is available in the standard sizes 25 - 45 with guide carriages in standard length and with extra length for higher load capacities. In addition this type with its eight running rows offers ISO-compliant dimensions and is therefore interchangeable with other linear guides.