Airtac LSH Linear Guide Rail LSH25HN1X340S20AN-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25HN1X340S20AN-M6 is a standard-type profile linear guide on a 23 mm wide rail. Four rows of balls contact X-shaped raceways at a 45° angle, so the guide carries load equally in all four directions and absorbs small mounting errors inside the carriage instead of binding.
- SeriesLSH
- Supplied asComplete guide set
- SizeLSH25
- Rail width23 mm
- Carriage lengthStandard carriage
- Carriages1
- Rail length340 mm
- AccuracyN — normal grade
- PreloadA — no preload
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac LSH Linear Guide Rail LSH25HN1X340S20AN-M6
This AirTAC LSH25HN1X340S20AN-M6 is a complete linear guide set: one profile rail cut to 340 mm with a single square, standard-length block riding it. Despite the 25 in the code, the rail is 23 mm wide - machine the seat to 23 or the block will sit 2 mm off its datum. Inside the block, four rows of recirculating balls meet X-arranged arc raceways at 45 degrees, two contact points per ball, so lifting, side and downward loads all draw on the same capacity while slight mounting-surface errors are absorbed inside the block instead of showing up as binding.
Per block the ratings are 26.9 kN dynamic, 39.4 kN static - static runs near one and a half times dynamic across this range, which is why travel life is sized on C, not the bigger C0 - plus moments of 0.44 (MR) and 0.38 (MP, My) kN.m. This is the no-preload, normal-accuracy version with an M6 grease port, so a pair of these sets mounted about 500 mm apart stays inside size 25's 30 um parallelism and 130 um height allowances.
Airtac LSH Linear Guide Rail LSH25HN1X340S20AN-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25HN1X340S20AN-M6 |
|---|---|
| Series | LSH Series Linear Guide |
| Supplied as | Complete guide set |
| Construction | Recirculating ball, four ball rows on X-shaped raceways at a 45° contact angle, self-aligning |
| Size code | LSH25 |
| Rail width | 23 mm (the size code is not the rail width above size 20) |
| Carriage style | Square (compact) |
| Carriage length | Standard carriage |
| Carriages supplied | 1 |
| Rail length | 340 mm |
| Basic dynamic load rating C | 26.9 kN per carriage |
|---|---|
| Basic static load rating C0 | 39.4 kN per carriage |
| Allowable static moment | MR 0.44 / MP 0.38 / My 0.38 kN·m |
| Accuracy grade | N — normal grade |
| Preload grade | A — no preload |
| Mounting screws | M6 — 1370 N·cm into steel, 921 cast iron, 686 aluminium |
| Lubrication | Pre-filled with Mobilux EP2; re-grease every 100 km of travel or every 3–6 months |
| Interchangeability | LSH carriages fit LSH rails of the same model |
Specifications follow the official AirTAC LSH catalogue. The catalogue page does not state the carriage or rail base material. Sizes 35 and 45 exist in the catalogue but are not stocked here; they are available to order.
Model Code: Airtac LSH Linear Guide Rail LSH25HN1X340S20AN-M6
| LSH | LSH Series Linear Guide. |
|---|---|
| 25 | Size code — note the rail is 23 mm wide, not 25 mm. |
| H / F1 / F2 / F3 | Carriage style: square, or flange mounted from the top, bottom, or both. |
| N | Standard carriage. |
| 1X340 | 1 carriage on a 340 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| A | A — no preload — higher preload raises rigidity and tightens how flat the mounting surface must be. |
| N | N — normal grade. |
| -M4 / -M6 / -A01… | Grease nipple or tube-fitting type. Restricted by size: size 15 the M4 family, 20–35 the M6 family, 45 the PT1/8 family. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 340 mm |
| Carriage | Yes, 1 |
Rail and carriage(s) supplied together, matched as a set. If you are not sure which form you need, send us the machine or the original part number and we will confirm it before you order.
Where the Airtac LSH Linear Guide Rail LSH25HN1X340S20AN-M6 Is Used
Benchtop pick-and-place module
A 340 mm stroke moves small electronic parts between feeder trays on a compact assembly bench; the square block keeps the tooling plate low and the gripper close to the rail centreline.
Deburring-station work slide
Feeding a machined housing past a wire brush at a bench station: one block on a short rail carries the fixture, and the M6 port reaches a standard grease gun for shop-floor top-ups.
Laser alignment traverse
Sliding a mirror mount along 340 mm on an optical bench, where the no-preload block runs with low breakaway so fine adjustments do not stick-slip.
Is the Airtac LSH Linear Guide Rail LSH25HN1X340S20AN-M6 the Right Guide?
Start the size check from the duty: if the load is genuinely light and the envelope tight, LRM is the smaller family - its load ratings are not published, so we confirm them against your cycle before you order. If a cantilever governs, step up: LSH30 lifts MR from 0.44 to 0.66 kN.m, and the long LSH25 block lifts it to 0.58 kN.m without changing rail width. If travel is short and you need crossed-roller stiffness rather than long recirculating travel, step across to LGC. Order checklist: confirm the form (a set here, not a part); size by load AND moment; block style and length; block count and rail length; accuracy and preload, with the trade-off that medium preload cuts the allowed height error from 130 um to 70 um; grease fitting; pairing code only when replacing a single part.
Quick checklist
- ✓ Complete set, carriage only, or rail only?
- ✓ Worst-case moment, not just straight load
- ✓ Travel length and mounting space
- ✓ Accuracy grade and preload
- ✓ Mounting surface ground or finish-milled
- ✓ Pairing code, if replacing a part
Installation & Maintenance Notes
- check Mounting surface must be ground or finish-milled.
- check Torque the rail screws per the recommended figures, in sequence.
- check Keep the mounting corner radius inside the stated R maximum.
- check Do not angle the carriage onto the rail; balls can drop out.
- check Drive the supplied bolt caps into the mounting holes.
- check Re-grease every 100 km of travel or every 3–6 months.
- check Installation by qualified personnel per AirTAC docs.
Airtac LSH Linear Guide Rail LSH25HN1X340S20AN-M6 FAQ
Per block at standard length: dynamic rating C 26.9 kN, static C0 39.4 kN, static moments MR 0.44, MP 0.38 and My 0.38 kN.m. Normal-grade running parallelism spans 12-37 um. Fix the 23 mm rail with M6 screws at 1370 N.cm into steel, 921 into cast iron, 686 into aluminium, seat corner radius 1 mm maximum. Lubrication: 3.6 cm3 Mobilux EP2 first charge, 1.1 cm3 top-ups, refreshed every 100 km of travel or every 3 to 6 months, whichever comes first.
This set ships without preload, so a 500 mm rail spacing tolerates 30 um of parallelism error and 130 um of height difference between rails. Light preload tightens that to 22 and 85 um; medium preload to 20 and 70 um. The stiffer guide is also the less forgiving one - if your base machining is average, no preload is the pragmatic choice, and rigidity can be recovered with a second block or one size up.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac LSH Linear Guide Rail LSH25HN1X340S20AN-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.