Airtac LSH Linear Guide Rail LSH25RLX580-S20-N-E
The AirTAC Airtac LSH Linear Guide Rail LSH25RLX580-S20-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 length580 mm
- AccuracyN — normal grade
- 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 LSH25RLX580-S20-N-E
One hardened LSH25 profile rail, ground at normal accuracy and cut to 580 mm, with the bolt holes offset 20 mm from the rail ends (S20 pattern). This is a rail-only purchase: there is no carriage in the box, so no dynamic or static load rating can be quoted for it - those numbers exist only for the carriage. Remember the size code: LSH25 rails are 23 mm wide, not 25, and drawing the datum from the code will put your T-slots 2 mm off.
Grade N parallelism runs 12-37 um over the length. Achieved straightness on your machine depends heavily on pulling the rail flat against its datum face and torquing every M6 screw correctly, so prepare the mounting face before fitting. The E pairing code ties this rail to any LSH25 carriage ordered with the same letter.
Airtac LSH Linear Guide Rail LSH25RLX580-S20-N-E Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25RLX580-S20-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 | 580 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 |
| 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 LSH25RLX580-S20-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. |
| N | N — normal grade. |
| 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, 580 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 LSH25RLX580-S20-N-E Is Used
Benchtop CNC router X-axis
A maker scaling up a 3018-style router to a steel-frame benchtop machine uses this 580 mm rail as the X-axis, setting the two M6 screw rows against a machined datum. Normal grade keeps cost down on a hobby-class cut envelope.
Reject-gate slide on a packaging line
A packaging integrator replaces a sticky cam-follower slide that diverts misprinted cartons. A 23 mm profile rail with one square carriage gives the gate a crisp, low-stickion motion and survives dust from the carton hopper.
Calibration rig re-gauge
A metrology workshop re-trams an old calibration slide by fitting a fresh normal-grade rail, then dial-indicating along the 580 mm travel to confirm the carriage sweeps within the machine's own tolerance before recalibrating the scale.
Is the Airtac LSH Linear Guide Rail LSH25RLX580-S20-N-E the Right Guide?
Choose rail only when you are rebuilding a machine base, extending an axis, or replacing a damaged rail while keeping serviceable blocks. Light-duty compact duties may suit the smaller LRM family better, but its load ratings are unpublished and we confirm them per application. For short-travel work needing crossed-roller stiffness, LGC is the cross-grade alternative.
Before ordering, tick every line: rail-only form confirmed, size correct for the carriage's load and moment, carriage style (square or flange) and length chosen separately, block count, accuracy and preload - noting that a firmer preload shrinks the allowable installation error - grease fitting on the carriage, and the pairing code if this replaces an existing rail. Anything not in the datasheet, ask us on RFQ.
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 LSH25RLX580-S20-N-E FAQ
Running parallelism band for grade N: 12-37 um. Fixing: M6 socket screws at 1370 N.cm (steel), 921 (cast iron), 686 (aluminium). Shoulders: H 6.5 mm, H1 5, H2 5, corner radius no more than 1 mm. Allowable installation error at 500 mm spacing, unloaded grade: 30 um parallelism, 130 um height, scaling with real spacing. Maximum rail length in this size is 4040 mm. Load and moment ratings are carriage properties and are not quoted here.
No. LSH25RLX580-S20-N-E is the rail on its own - no carriage, no preload setting, no grease point. To build a working axis you also order an LSH25 carriage with pairing code E. The code must match: it is the factory's guarantee that block and rail run together with the intended smoothness and accuracy. Check the code on your existing block before ordering a replacement rail.
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 LSH25RLX580-S20-N-E
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.