Description

• Characteristics of THK linear guide SR typeCompared with the 45 ° touch structure, the THK linear guide SR kind has the ensuing outstanding characteristics. By using the characteristics of these THK linear guides, machines and devices with larger precision and pressure would be manufactured.Differences in rated load and repair life of THK linear guidesDue to the use of a ninety ° contact structure within the THK linear handbook SR type, there could also be differences in rated load or service life in comparison with using a forty five ° contact structure. Compared with the product with a 45 ° contact structure, the THK linear instruction manual SR form has solely 70% of the burden performing on the HSR type when subjected to the same radial load in line with a similar ball diameter. This consequence shows a distinction of greater than twice in the carrier lifetime of the THK linear handbook SR type.Differences in Accuracy of THK Linear GuidesIf there is a machining error (grinding error) within the THK linear instruction manual track or THK guide slider, it'll affect the strolling accuracy. Assuming the machining error of the rolling floor is Δ, the radial direction error of the 45 ° touch structure (HSR type) could be 1.4 times more than that of the ninety ° contact constitution (SR type). In addition, in the horizontal direction, the horizontal error of the forty five ° contact structure could be 1.22 occasions that of the 30 ° contact structure.The difference in tension of THK linear guide railThe 90 ° touch constitution utilized in the THK linear handbook SR sort also differs in stress from the 45 ° contact structure.When the same radial load P is applied, the displacement of THK linear handbook SR type in the radial course is just 56% of that of the 45 ° contact constitution product. Therefore, when high rigidity is needed within the radial direction, utilizing THK linear handbook SR variety is more advantageous.SummaryTherefore, the THK linear handbook SR form with a 90 ° contact structure is best suited for places chiefly affected by radial loads, locations that require radial rigidity, or locations that require walking accuracy within the up, down, left, and appropriate directions.However, when the anti radial load, lateral load, or second is large, it is suggested to apply HSR sort THK linear guides with a forty five ° contact structure (4-direction equal load type).

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