Airtac LSH Linear Guide Rail LSH25RLX4000-P-E
The AirTAC LSH Linear Guide Rail LSH25RLX4000-P-E 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 asRail only
- SizeLSH25
- Rail width23 mm
- Rail length4000 mm
- 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 LSH25RLX4000-P-E
LSH25RLX4000-P-E is the precision (P) grade of the AirTAC LSH25 rail, supplied as a single 4000 mm length with no carriage attached - the recirculating-ball carriages that run on its 45 degree raceway grooves are ordered separately under the same E pairing code. The rail itself measures 23 mm across, not 25; the size code and the physical width diverge from LSH25 upward, and only the 23 mm figure belongs on your drawing.
Over four metres, the P grade holds running parallelism to a 3-21 um band - the tightest straightness the series publishes. Achieving it in the machine depends on you as much as on the part: whether the rail is pulled flat against a clean datum face and every M6 screw brought to torque has a large effect on the accuracy you actually get. The length sits 40 mm inside the 4040 mm Lmax for size 25, and the supplied bolt caps must be driven fully home so no swarf enters a ball circuit.
Airtac LSH Linear Guide Rail LSH25RLX4000-P-E Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25RLX4000-P-E |
|---|---|
| Series | LSH Series Linear Guide |
| Supplied as | Rail only |
| 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) |
| Rail length | 4000 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 |
| 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, matched by the pairing code |
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 listed here; they are available to order. This item is a rail only. Order a complete set if you also need a carriage.
Model Code: Airtac LSH Linear Guide Rail LSH25RLX4000-P-E
| LSH | LSH Series Linear Guide. |
|---|---|
| 25 | Size code — note the rail is 23 mm wide, not 25 mm. |
| RL | Rail only — no carriage supplied. |
| Pairing code | Rails and carriages must share a pairing code. Take it from the original part when replacing. |
| -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 | Rail only |
|---|---|
| Rail | Yes, 4000 mm |
| Carriage | No — not supplied with this item |
This is a bare rail cut to length. NO CARRIAGE IS INCLUDED. 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 LSH25RLX4000-P-E Is Used
Wafer handling stage
A semiconductor wafer transfer stage scanning 4 m between load locks needs straightness in single microns; the 3-21 um P-grade band on this 23 mm rail keeps the end-effector path inside the process window.
Optical lens inspection scanner
A lens inspection scanner racking 4000 mm of optics past a camera demands parallel motion, and the P grade plus a correctly torqued datum face delivers it without resorting to a granite base.
Laser interferometer carriage
Metrology labs retrofitting an interferometer carriage onto a four-metre bench specify P-grade rail so measurement drift from the guide itself stays below the instrument's resolution.
Is the Airtac LSH Linear Guide Rail LSH25RLX4000-P-E the Right Guide?
Because the ratings belong to the carriage, choose the moving parts by load and by moment before committing to this rail. Where duty is light and space scarce, the LRM series is the smaller option - its load figures are not published, so we confirm them for your case. Where travel is short and stiffness at the tool matters more than stroke, LGC crossed-roller guides are the right cross-grade. Where a long overhang tips the carriage, a step to LSH30 or to a long carriage lifts moment capacity fastest.
Final checks for this SKU: you are buying rail only with pairing code E; every carriage must also be E; set carriage style, length and count against both load and moment; and if you add preload on the carriages, remember it shrinks the allowable mounting error - at size 25 the permitted height error falls sharply between no preload and medium, so a P-grade rail on a careless base can still measure poorly.
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 LSH25RLX4000-P-E FAQ
Rail width 23 mm; running parallelism 3-21 um at the P grade; length 4000 mm with 40 mm of headroom below the 4040 mm Lmax for size 25; M6 top-lock mounting at 1370 / 921 / 686 N.cm in steel / cast iron / aluminium; shoulders H 6.5, H1 5, H2 5 mm; mounting-surface corner radius max 1 mm. No load, moment, preload or grease values apply to the rail itself - those belong to the E-coded carriage.
It does not. You receive one 4000 mm precision-grade rail plus bolt caps - no carriage, no preload grade, no grease nipple. To match carriages to it, both parts must carry the same pairing code, here E. Check the code on your existing carriage before ordering, or quote the full original LSH SKU to us and we will pair it for you.
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 LSH25RLX4000-P-E
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.