Airtac LSH Linear Guide Rail LSH20RLX180-S20-N-E
The AirTAC Airtac LSH Linear Guide Rail LSH20RLX180-S20-N-E is a standard-type profile linear guide on a 20 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
- SizeLSH20
- Rail width20 mm
- Rail length180 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 LSH20RLX180-S20-N-E
LSH20RLX180-S20-N-E is a short, rail-only item from the AirTAC LSH range: 180 mm of hardened size 20 profile rail with normal accuracy and no carriage of any kind supplied. Its 20 mm width carries ground, X-arranged arc raceways sized for the four rows of 45 degree contact-angle balls inside a matched carriage, which is also where the self-aligning behaviour lives - the rail itself simply provides the straight, hardened track. End holes sit 20 mm from each rail end (S20) and the rail mounts top-lock.
For grade N the catalogue quotes running parallelism as a 12-37 um band across rail length ranges, so this piece gives you the same accuracy family as its longer siblings, just in a footprint that fits a compact slide. One standard carriage needs only a short span to develop its stroke, and 180 mm suits that duty. Shoulders are H 4.3, H1 3.5, H2 5 mm, corner radius limited to 0.5 mm, and the fixing screws are M5. The pairing letter E must appear on the carriage you buy - without the matching code, smooth running, preload and accuracy are not assured.
Airtac LSH Linear Guide Rail LSH20RLX180-S20-N-E Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20RLX180-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 | LSH20 |
| Rail width | 20 mm |
| Rail length | 180 mm |
| Basic dynamic load rating C | 18.6 kN per carriage |
|---|---|
| Basic static load rating C0 | 28.6 kN per carriage |
| Allowable static moment | MR 0.27 / MP 0.25 / My 0.25 kN·m |
| Accuracy grade | N — normal grade |
| Mounting screws | M5 — 882 N·cm into steel, 588 cast iron, 441 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 LSH20RLX180-S20-N-E
| LSH | LSH Series Linear Guide. |
|---|---|
| 20 | Size code. |
| 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, 180 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 LSH20RLX180-S20-N-E Is Used
Drill-press fence jig
A woodworker fits this short track under a drill-press fence so the fence feeds smoothly between drilling positions and clamps dead square each time.
Compact camera slider upgrade
Swapping a worn extrusion on a small video slider for a genuine profile rail removes the stiction that shows up as jitter in slow dolly moves.
Dial-gauge inspection slide
A workshop measurement station uses an 180 mm rail to carry a dial-test fixture across a part, relying on the rail's straightness rather than the operator's hand for a repeatable sweep.
Is the Airtac LSH Linear Guide Rail LSH20RLX180-S20-N-E the Right Guide?
A 180 mm rail is typically a repair or retrofit part for a compact slide rather than a new-build component, so start by reading the code off the part you are replacing and match size, length, offset and pairing letter. Step down to LRM only if the load is genuinely light and the mounting envelope tight - we confirm LRM ratings with the factory since none are published. Step across to LGC if the stroke is short and the job needs crossed-roller stiffness more than long recirculating travel. Your checklist here: rail-only form, size 20 judged by the paired carriage's load and moment, rail length 180 mm, grade N, the E pairing code for the carriage, and the mounting-surface rules - 0.5 mm max corner radius, shoulders 4.3 / 3.5 / 5 mm, M5 screws torqued correctly against the datum face.
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 LSH20RLX180-S20-N-E FAQ
Width 20 mm, length 180 mm, accuracy grade N with the 12-37 um running parallelism band, top-lock mounting and S20 end-hole offset. Mounting shoulders measure 4.3 mm (H), 3.5 mm (H1) and 5 mm (H2), the abutment corner radius must stay at or below 0.5 mm, and M5 screws should be tightened to 882 N.cm on steel, 588 on cast iron, 441 on aluminium. No load rating, preload or grease quantity applies to the rail itself - the paired carriage owns all of those.
No carriage is included - this code is the rail alone and will not move anything by itself. The E on this code is the pairing letter: buy a carriage whose own code ends in E and the two parts are matched for smoothness, preload and accuracy. A carriage with another letter is not assured to pair with this rail. Because a replacement carriage is typically a fraction of the cost of a whole set, rail-and-carriage separately is usually the economical repair provided the rail is still sound - check its raceways for scoring before reusing it.
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 LSH20RLX180-S20-N-E
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