Airtac LSH Linear Guide Rail LSH25HL3X1960S20AH-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25HL3X1960S20AH-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 lengthLong carriage
- Carriages3
- Rail length1960 mm
- AccuracyH — high 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 LSH25HL3X1960S20AH-M6
This order code buys a high-accuracy LSH25 guide set built around three long square carriages on a single 1960 mm rail with S20 end offset, no preload (grade A) and M6 lubrication fittings. It is a mechanical rolling guide, not a pneumatic part - there is no bore, stroke or pressure anywhere in it. In each carriage, ball rows meet their X-shaped raceways at 45 degrees from two directions, so the block carries load equally up, down and sideways and corrects slight misalignment of the mounting surface internally. The true rail width for size 25 is 23 mm, not 25.
Accuracy grade H holds running parallelism within a 7-28 um band across this rail length - roughly half the deviation a grade N rail of the same length allows. Three long carriages share the work at 32.9 kN dynamic and 53.0 kN static each, with moment ratings of 0.58 / 0.57 / 0.57 kN.m in MR / MP / My, and the 1960 mm length leaves nearly half of the 4040 mm single-rail maximum in reserve if the machine grows later.
Airtac LSH Linear Guide Rail LSH25HL3X1960S20AH-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25HL3X1960S20AH-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 | Long carriage |
| Carriages supplied | 3 |
| Rail length | 1960 mm |
| Basic dynamic load rating C | 32.9 kN per carriage |
|---|---|
| Basic static load rating C0 | 53.0 kN per carriage |
| Allowable static moment | MR 0.58 / MP 0.57 / My 0.57 kN·m |
| Accuracy grade | H — high 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 LSH25HL3X1960S20AH-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. |
| L | Long carriage. |
| 3X1960 | 3 carriages on a 1960 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. |
| H | H — high 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, 1960 mm |
| Carriage | Yes, 3 |
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 LSH25HL3X1960S20AH-M6 Is Used
Optical inspection bridge over glass panels
A camera carriage traversing 1.9 m above glass or film samples needs grade H parallelism so focus and magnification do not drift along the full stroke.
Flat-panel display handling stage
Three long blocks spread the weight of a wide panel fixture and hold it level, leaning on the 0.57 kN.m My rating to resist roll at the fixture edges.
Laser head alignment carriage
Commissioning a 1960 mm processing axis where beam-to-work alignment is checked along the travel benefits from the tight 7-28 um grade H band and the free-running fit of grade A.
Is the Airtac LSH Linear Guide Rail LSH25HL3X1960S20AH-M6 the Right Guide?
Without preload, this set tolerates the widest installation error in the LSH25 range: 130 um of height difference between rails per 500 mm of spacing and a 30 um parallelism allowance, which suits fabricated machine bases that will never be ground. Spend that latitude only where rigidity demands are modest; if a spindle or press tool reverses hard, the C-preload version of the same geometry trades down to 70 um and 20 um instead. If your duty is light and the envelope small, LRM steps down - its ratings are not published, so we verify them for you - and LGC steps across when travel is short but crossed-roller rigidity matters more than long recirculating life. Restate the whole code when ordering: form (a set with rail and three carriages), size 25, carriage style H and length L, count 3, rail 1960 mm, grade H, preload A, fitting M6.
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 LSH25HL3X1960S20AH-M6 FAQ
Per carriage: dynamic rating C 32.9 kN, static C0 53.0 kN, allowable moments MR 0.58 / MP 0.57 / My 0.57 kN.m. Grade H running parallelism: 7-28 um depending on rail length. Rail screws: M6 at 1370 / 921 / 686 N.cm on steel / cast iron / aluminium. Grease: about 4.5 cm3 of Mobilux EP2 factory-fitted per long carriage, topped up with 1.4 cm3 via the M6 fitting every 100 km of travel or every 3 to 6 months.
Grade A leaves the factory fit unloaded, so the guide runs with the least drag and forgives the most installation error: 130 um allowable height difference between rails and 30 um parallelism per 500 mm spacing on LSH25. The trade is rigidity - under a reversing load the carriage can move within its internal clearance, which shows up as banding on machined or scanned surfaces. If that matters, order the C grade of the same code and accept the 70 um / 20 um tolerances that come with it.
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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 LSH25HL3X1960S20AH-M6
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