A linear guide is more than a rail size
A profiled linear guide assembly consists of a rail and carriage blocks. The size alone does not identify the series, block form, accuracy, preload or options. The complete model reference is useful both for a new assembly and a replacement block enquiry.
Reading a partial marking: SHS25 or HSR25
A visible marking such as SHS25 or HSR25 is a useful starting point for a THK LM guide enquiry. Record the remaining letters and suffixes as well. Do not build an order code from the series and size alone: block form, seals, preload, accuracy and the rail specification still need checking against the relevant THK coding diagram.
Reading a HIWIN family marking: HG, EG or MG
For HIWIN linear guide identification, preserve the entire printed reference rather than reporting only a number such as 20 or 25. HG, EG and MG identify different guideway families. A size number alone does not identify the carriage shape, mounting arrangement or complete assembly. Photograph both the block marking and rail marking where accessible.
Rail length is different from travel
State the total rail length in millimetres and the number of rails required. Machine travel is not necessarily the rail length. For an existing rail, include the mounting-hole spacing and the distance from each end to its nearest hole, or provide the approved drawing. Note the number of blocks required on each rail.
THK LM guide families
THK identifies its guide families with names such as SHS, HSR and SSR. SHS is a caged-ball family, while HSR belongs to the full-ball range. THK model coding contains further details for the block configuration, number of blocks, rail length and specified options. Use the catalogue coding diagram for the chosen family rather than interpreting an isolated number.
HIWIN guideway families
HIWIN lists HG guideways, low-profile EG guideways and miniature MG guideways. The miniature range includes narrow MGN and wider MGW forms. These family names are a starting point for identification, not a complete ordering reference. Record the full block and rail codes from the existing item or approved drawing.
Replacement blocks and complete sets
State whether the requirement is for a rail, a block or a complete rail-and-block assembly. Do not assume blocks from different series or manufacturers can be interchanged. For a replacement, include the existing rail and block markings and the specified accuracy or preload if known.
Linear guide enquiries in Chennai
For THK LM guides or HIWIN linear guideways in Chennai, kindly share the make, full series reference, rail length, block quantity and drawing where available. South India Bearing Co.’s THK and HIWIN pages provide series references and manufacturer catalogue links for checking the requested item.
Example THK or HIWIN enquiry
Please quote for [make] [complete block and rail reference], [number] rails of [length] mm, with [number] blocks per rail. Requirement: [block only / rail only / complete set]. Existing marking photographs and drawing attached. Delivery: [city]. Include preload and accuracy from the machine specification when available; mark unknown details as unknown.
Related products and catalogues
Browse the relevant South India Bearing Co. product pages for range details, manufacturer catalogues and quotation enquiries.