
The AirTAC Airtac LSH Linear Guide Rail LSH15HN1X160S20AH-M4 is a standard-type profile linear guide on a 15 mm wide rail. Four rows of balls contact X-shaped raceways at a 45Β° angle, so the guide carries load equally in all four directions and absorbs small mounting errors inside the carriage instead of binding.
LSH15HN1X160S20AH-M4 is a full linear guide assembly: one 160 mm rail and a single square, standard-length size 15 carriage, with holes set 20 mm from the rail ends. The H in the code buys the high accuracy grade, where running parallelism along the rail holds between 7 and 28 um depending on length, against 12 to 37 um for the normal grade. Load is carried by four rows of balls on X-pattern 45 degree arc raceways, so downward, upward and side forces all meet the same capacity, and minor mounting-surface flaws are taken up inside the carriage rather than showing up as bind or scrub. The rail is a true 15 mm wide.
Per carriage: 11.3 kN basic dynamic load, 17.9 kN static, and 0.12 kN.m moment rating in each of MR, MP and My. High accuracy grade is only as good as the surface under it - the catalogue is explicit that whether the rail is pulled flat against its datum and torqued properly has a large effect on the accuracy actually achieved, so machine the mounting face and torque the M4 screws to 412 N.cm in steel, 274 in cast iron or 206 in aluminium. Keep the shoulder corner radius at or below 0.5 mm, or the rail edge will not seat against the datum.
| Model | Airtac LSH Linear Guide Rail LSH15HN1X160S20AH-M4 |
|---|---|
| Series | LSH Series Linear Guide |
| Supplied as | Complete guide set |
| Construction | Recirculating ball, four ball rows on X-shaped raceways at a 45Β° contact angle, self-aligning |
| Size code | LSH15 |
| Rail width | 15 mm |
| Carriage style | Square (compact) |
| Carriage length | Standard carriage |
| Carriages supplied | 1 |
| Rail length | 160 mm |
| Basic dynamic load rating C | 11.3 kN per carriage |
|---|---|
| Basic static load rating C0 | 17.9 kN per carriage |
| Allowable static moment | MR 0.12 / MP 0.12 / My 0.12 kNΒ·m |
| Accuracy grade | H β high grade |
| Preload grade | A β no preload |
| Mounting screws | M4 β 412 NΒ·cm into steel, 274 cast iron, 206 aluminium |
| Lubrication | Pre-filled with Mobilux EP2; re-grease every 100 km of travel or every 3β6 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.
| LSH | LSH Series Linear Guide. |
|---|---|
| 15 | Size code. |
| H / F1 / F2 / F3 | Carriage style: square, or flange mounted from the top, bottom, or both. |
| N | Standard carriage. |
| 1X160 | 1 carriage on a 160 mm rail. |
| S⦠| End-hole offset from the rail end, in mm. |
| A | A β no preload β higher preload raises rigidity and tightens how flat the mounting surface must be. |
| H | H β high grade. |
| -M4 / -M6 / -A01β¦ | Grease nipple or tube-fitting type. Restricted by size: size 15 the M4 family, 20β35 the M6 family, 45 the PT1/8 family. |
| This order | Complete guide set |
|---|---|
| Rail | Yes, 160 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.
Under a stereo microscope, a 160 mm stage built on H grade runs with 7-28 um of parallelism along the rail, keeping a small PCB or machined feature in focus across the whole traverse.
Positioning a telecentric camera with micrometer feel: high accuracy grade and no preload give repeatable, low-friction travel, and the M4-side port suits the AM6 tube fitting for greasing without drips on optics.
A jig-boring or micro-milling infeed axis where depth of cut is set in hundredths of a millimetre; H grade keeps the rail straight enough that the dial or DRO reading reflects real tool position.
High accuracy grade earns its keep only when the mounting surface is finished to match, so first ask what your machine can hold. If the datum is milled to within a few hundredths of a millimetre and you can torque the M4 screws correctly, the 7-28 um parallelism band of H grade is usable; if not, normal grade at 12-37 um is usually the honest choice. Size the guide on load AND moment: 11.3 kN dynamic and 0.12 kN.m per carriage here, and step up one size to LSH20 when the moment governs, since its MR of 0.27 kN.m is 2.25 times higher. For light duty in a tight envelope, LRM is the step down - ask us to confirm its load ratings, which the catalogue does not publish - and for short travel where crossed-roller rigidity beats long recirculating travel, step across to LGC. Close the checklist: complete set versus part-only, carriage style and length, count and rail length, preload against installation tolerance (no preload here allows 130 um of height error at 500 mm spacing), grease fitting, and the pairing code if you are replacing a part.
Quick checklist
Per carriage: C 11.3 kN dynamic, C0 17.9 kN static, MR/MP/My each 0.12 kN.m. High (H) accuracy grade runs at 7-28 um of parallelism across the rail-length bands, against 12-37 um for N grade. Mounting screws M4: 412 N.cm into steel, 274 N.cm into cast iron, 206 N.cm into aluminium; keep the corner radius of the mounting shoulder at 0.5 mm or less. Grease per carriage: 0.9 cm3 first charge, 0.3 cm3 top-up, every 100 km of travel or 3 to 6 months.
A set. The box holds one 160 mm rail and one square standard carriage to run on it, so nothing else is needed to mount and run. LSH carriages and rails of the same model are interchangeable - any LSH15 carriage on any LSH15 rail keeps its rated smoothness, preload and accuracy - so a future replacement carriage can be ordered on its own BK code, provided you quote the pairing letter from the original.
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