Airtac LSH Linear Guide Rail LSH25HN1X220S20AH-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25HN1X220S20AH-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 length220 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 LSH25HN1X220S20AH-M6
This is a complete LSH25 linear guide: one 220 mm profile rail with a single square H carriage, standard length, factory-greased and ready to bolt down. Four rows of balls circulate through X-pattern arc raceways cut at 45 degrees, meeting each ball on two points, so down-thrust, lift-off and side loads all meet the same capacity, and minor mounting misalignment is taken up inside the carriage. Laying out the base plate? The rail is 23 mm wide - size 25 is a code, not a width.
The H in the suffix is the accuracy grade: running parallelism for H is 7 to 28 um across the rail-length range, roughly half the 12 to 37 um of ordinary N grade, which is what you want under a measuring or optical component. Preload is A (none), so the installation window stays generous - P 30 um parallelism and S 130 um height error at 500 mm spacing. Ratings per carriage: C 26.9 kN, C0 39.4 kN, moments 0.44 / 0.38 / 0.38 kN.m. Remember that the accuracy you finally get depends heavily on the rail being pulled flat to its datum and torqued properly.
Airtac LSH Linear Guide Rail LSH25HN1X220S20AH-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25HN1X220S20AH-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 | 220 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 | 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 LSH25HN1X220S20AH-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. |
| 1X220 | 1 carriage on a 220 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, 220 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 LSH25HN1X220S20AH-M6 Is Used
Machine-vision camera rail
A line-scan camera needs to travel true or the stitched image drifts. H grade holds running parallelism to 7-28 um, and with no preload the carriage glides on the light push a focus adjuster gives it.
Flat-panel display handling cradle
Large glass panels demand wide, flat support. Rails of this style carry the cradle with equal capacity in all four directions, so a misaligned suction line cannot lift the balls out of contact.
Laser marker cross-slide
The 220 mm travel positions the marking head across the workpiece; MR 0.44 kN.m carries the head's overhang, and the H grade keeps the focal plane parallel to the table so edge-of-field marks stay sharp.
Is the Airtac LSH Linear Guide Rail LSH25HN1X220S20AH-M6 the Right Guide?
Specify H accuracy when straightness of travel is part of the measurement, not just the feel - camera rails, laser heads, probe carriers. If normal grade would do, N saves cost; if you need tighter still, P grade is available to order. When the load overhangs, the moment governs: a long LSH25 carriage raises MR from 0.44 to 0.58 kN.m, or step up a size. Light-duty compact machines can step down to LRM, whose load ratings we confirm for you since they are not published. Short travel with a demand for crossed-roller rigidity points to LGC instead.
Run the checklist: set / carriage / rail form, size by load AND moment, square standard carriage, one carriage on 220 mm, H accuracy with no preload and the mounting tolerance that implies, M6-family fitting, and the pairing code off your old rail if you ever order parts separately.
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 LSH25HN1X220S20AH-M6 FAQ
Per standard carriage: dynamic C 26.9 kN, static C0 39.4 kN, MR 0.44, MP 0.38, My 0.38 kN.m. H-grade running parallelism: 7 to 28 um depending on rail length. Mounting: M6 rail screws at 1370 N.cm on steel, 921 on cast iron, 686 on aluminium; shoulder height 6.5 mm with corner radius max 1 mm. Grease: 3.6 cm3 charge, 1.1 cm3 top-up, Mobilux EP2 or equivalent, re-greased every 100 km of travel or every 3 to 6 months.
Partly - the grade sets the rail's own parallelism, but the base decides the rest. Keep mounting-surface errors inside the no-preload limits (P 30 um, S 130 um at 500 mm spacing, scaling with the real span) and respect a shoulder corner radius of 1 mm or less. Then seat the rail flat, torque every M6 screw fully, and drive the supplied bolt caps into the holes so swarf cannot enter the ball circuit - a cap left standing proud of the rail top face is a common accuracy killer.
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Standard models are processed and dispatched in 3-5 business days.
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