Airtac LSH Linear Guide Rail LSH25HN1X185S45AN-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25HN1X185S45AN-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 length185 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 LSH25HN1X185S45AN-M6
LSH25HN1X185S45AN-M6 is one matched unit: a single square H carriage, standard length, factory-fitted to a 185 mm length of profile rail and pre-filled with grease. The carriage rides on four rows of recirculating balls in crossed X raceways set at 45 degrees, contacting each ball at two points - which is why loads are equal whichever way they come, and why a slightly out-of-flat base is absorbed inside the carriage rather than jamming the slide. The true rail width is 23 mm even though the size reads 25.
Accuracy is normal grade (N) and preload is none (A), so this is the freest-running, easiest-to-install version of the size. Running parallelism sits in the 12 to 37 um band across the rail-length range, and with preload A the installation tolerance is the loosest on offer: P 30 um parallel and S 130 um height error at 500 mm spacing. Per carriage the catalogue lists C 26.9 kN, C0 39.4 kN and moment ratings of 0.44 / 0.38 / 0.38 kN.m. The 185 mm rail leaves enormous headroom under the 4040 mm maximum length for this size if the axis ever grows.
Airtac LSH Linear Guide Rail LSH25HN1X185S45AN-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25HN1X185S45AN-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 | 185 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 LSH25HN1X185S45AN-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. |
| 1X185 | 1 carriage on a 185 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, 185 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 LSH25HN1X185S45AN-M6 Is Used
Filling-line guide-rail adjuster
Neck guides on a bottling line are repositioned for every container change. A short 185 mm rail with one free-running carriage gives a hand-set slide with no stick-slip, and the low drag of preload A makes adjustment a one-hand job.
Drill-press table riser
A workshop table that lifts and clamps sees modest loads but wants zero slop in height setting. The 39.4 kN static rating is comfortably beyond anything a bench drill applies, and normal accuracy keeps the conversion affordable.
Pallet stop-and-locate station
Where pallets butt up against a stop, the guide sees shock, not speed. No preload suits the job - the carriage just translates the stop into position, and 39.4 kN of static capacity absorbs the bump without permanent deformation at working loads.
Is the Airtac LSH Linear Guide Rail LSH25HN1X185S45AN-M6 the Right Guide?
No preload means lowest drag and the widest mounting tolerance - the right call where an operator or a simple drive moves the load, or where the base plate is known to be only so-so flat. If the duty turns out to be heavier than planned, the moment rating decides before the load does: going to the long LSH25 carriage lifts MR from 0.44 to 0.58 kN.m with one part. If the envelope is small and the duty light, AirTAC LRM steps down - we confirm its unpublished load ratings for you. For short travel needing crossed-roller stiffness rather than long recirculating travel, step across to LGC.
Confirm before ordering: complete set here, size checked against load AND moment, square standard carriage, one carriage on 185 mm, N accuracy with no preload, M6-family grease fitting, and the pairing code of your existing rail should you later buy carriages on their own.
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 LSH25HN1X185S45AN-M6 FAQ
For one standard LSH25 carriage: C 26.9 kN dynamic, C0 39.4 kN static, moments MR 0.44 / MP 0.38 / My 0.38 kN.m; N-grade running parallelism 12 to 37 um by rail length. Rail screws are M6 at 1370 / 921 / 686 N.cm for steel, cast iron and aluminium. Lubrication is 3.6 cm3 initial and 1.1 cm3 per top-up, Mobilux EP2 or equal, every 100 km or 3 to 6 months - and 100 km arrives quickly: a 130 mm stroke at one cycle per second covers it in under five days.
Preload A gives you the loosest installation limits - P 30 um and S 130 um allowed over a 500 mm rail spacing - and the lowest running drag. What you give up is stiffness: under a reversing load an unloaded guide can show lost motion. If the axis reverses under servo control, compare preload B, which needs P 22 um and S 85 um, or preload C at 20 um and 70 um. The mounting-shoulder corner radius must stay at or under 1 mm either way.
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Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
Request a Quote for Airtac LSH Linear Guide Rail LSH25HN1X185S45AN-M6
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