Airtac LSH Linear Guide Rail LSH25RLX4000-N-E
The AirTAC Airtac LSH Linear Guide Rail LSH25RLX4000-N-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-N-E
A bare rail, cut to 4000 mm: this is LSH25RLX4000-N-E, the normal (N) accuracy grade of the AirTAC LSH25 profile rail, supplied with no carriage of any kind. The hardened raceway grooves machined into this 23 mm wide rail are what an E-coded carriage's four ball rows bear on at 45 degrees each. Treat the code's 25 as a series label only - the true mounting width is 23 mm, and a 25 mm slot will not clamp the rail flat.
Normal grade running parallelism spans 12-37 um over the length, the widest of the three bands, and that is the trade you are making: a softer straightness tolerance in exchange for the lowest rail cost. The 4000 mm cut leaves just 40 mm of headroom under the 4040 mm Lmax for size 25. Screws are M6 in top-lock pattern, and the bolt caps supplied with the rail must be seated flush, never left proud of the top face.
Airtac LSH Linear Guide Rail LSH25RLX4000-N-E Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25RLX4000-N-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 stocked 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-N-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-N-E Is Used
Palletising cell conveyor track
A palletising cell pushing cartons along a 4 m lane tolerates 12-37 um parallelism comfortably, so the N grade carries the guide carriage without stretching the budget across four metres of rail.
Flatbed CNC router gantry
Hobby and light industrial flatbed routers of 1200 x 4000 mm bed size run N-grade rails on the long axis; accuracy of the cut comes mostly from the spindle and the Y axis, not the last few microns of rail straightness.
Bagging machine film feed
The film draw carriage on a vertical bagging machine slides a short way but sits on long machine rails - replacing only the worn 4 m rail section keeps the packaging line's original carriages in service.
Is the Airtac LSH Linear Guide Rail LSH25RLX4000-N-E the Right Guide?
Start from the load and the moment, because both are properties of the carriage this rail will carry. A light, compact duty may drop to the LRM series - its ratings are unpublished, so we verify them for you first. If the motion is short-stroke and stiff rather than long-travel, LGC crossed rollers are the better cross-grade. If a cantilever load is tipping the carriage, moving up one size or fitting a long carriage usually buys more moment capacity than adding ball rows elsewhere.
Order-time checks: this is a rail-only purchase with pairing code E; the matching carriage must also be E; agree carriage style (square or flange), length and count; fix the accuracy grade and any preload with the mounting-tolerance consequence in mind; and confirm the grease fitting on the carriage suits its size. Send the full original SKU if you are replacing a 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 LSH25RLX4000-N-E FAQ
Width 23 mm; N-grade running parallelism 12-37 um; length 4000 mm against the 4040 mm Lmax for size 25; M6 top-lock screws torqued to 1370 / 921 / 686 N.cm on steel / cast iron / aluminium; shoulder heights H 6.5, H1 5, H2 5 mm; corner radius under the rail ends max 1 mm. Dynamic and static load ratings are carriage figures - they appear on the E-paired carriage's page, not here.
Rail only. One 4000 mm N-grade profile rail and its bolt caps ship in the box; there is no carriage, no preload grade and no grease point in this SKU. The pairing code E must appear on every carriage fitted to it. Send us the code stamped on your existing carriage, or the complete original LSH number, and we will confirm the match before you order.
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-N-E
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.