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Model SSR-XTB

Model SSR-XTB

Product catalog summary

Model Number Coding: The document provides a detailed explanation of the model number coding for THK's LM Guide models, specifically the SSR-XTB series. It includes instructions on how to download data by searching for the model number on the technical site.

Specifications: The document lists the outer dimensions and LM block dimensions for models SSR 15XTB, SSR 20XTB, and SSR 25XTB, including height, width, length, and other specific measurements such as grease nipple size.

Lubrication and Accessories: Models with a QZ lubricator cannot have a grease nipple. For models equipped with QZ, contact THK for grease nipple options. Contamination protection accessories and radial clearance symbols are also discussed.

Rail and Block Details: The document details the LM rail dimensions, basic load ratings, static permissible moments, and mass for different models. It specifies the width, height, pitch, and length of the rails, along with the permissible moments for single and double blocks.

Accuracy and Preload Symbols: The document explains the symbols for radial clearance, preload, and accuracy grades, ranging from normal to ultra precision.

Notes: Important notes include the prevention of foreign material entry through pilot holes, the maximum standard length of LM rails, and the availability of different rail types for models SSR15 and SSR25.

Table 1: The document includes a table showing the dimensions of rail mounting holes for standard and semi-standard rails for models SSR 15 and SSR 25.

Catalog excerpts

Model SSR-XTB Model No. (*1) See contamination protection accessory on 01-494. (*2) See 01-70. (*3) See 01-76. (*4) See 01-13. Note) This model number indicates that a single-rail unit constitutes one set. (i.e., required number of sets when 2 rails are used in parallel is 2 at a minimum.) Those models equipped with QZ Lubricator cannot have a grease nipple. When desiring a grease nipple for a model attached with QZ, contact THK. number LM block No. of LM blocks used on the same rail LM rail length (in mm) Applied to only 15 and 25 sizes Radial clearance symbol (*2) Normal (No symbol) Light preload (C1) Medium preload (C0) ' T ■ Symbol for LM rail jointed use Symbol for No. of rails used on the same plane (*4) Accuracy symbol (*3) Normal grade (No Symbol) High accuracy grade (H) Precision grade (P) Super precision grade (SP) Ultra precision grade (UP) 01-112 cn=c=hk To download a desired data, search for the corresponding model number in the Technical site.

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