
The AirTAC Airtac LSH Linear Guide Rail LSH15HN1X1500S30CN-M4 is a standard-type profile linear guide on a 15 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.
The LSH15HN1X1500S30CN-M4 is a complete LSH linear guide set: one 1500 mm profile rail and a single square (H) standard-length carriage supplied together, with mounting holes set 30 mm from each rail end. The code reads size 15, one carriage, 1500 mm rail, medium preload C, normal accuracy and an M4 grease fitting. Four rows of recirculating balls run in X-shaped arc raceways at a 45 degree contact angle, so the carriage carries load equally up, down and sideways and absorbs slight mounting-surface error inside itself instead of binding. The size 15 rail measures a true 15 mm in width.
Medium preload C is the defining choice here: it stiffens the ball contact against vibration and load reversal, and in exchange it tightens the installation window. At 500 mm rail spacing the allowable height error falls from 130 um with no preload to 35 um at preload C, roughly 3.7 times tighter, and the parallelism allowance drops from 25 um to 13 um. Per-carriage ratings for this set: 11.3 kN dynamic, 17.9 kN static, and 0.12 kN.m in each moment direction. The 1500 mm rail sits well inside the 4040 mm maximum length for size 15, so longer replacements exist if the machine grows.
| Model | Airtac LSH Linear Guide Rail LSH15HN1X1500S30CN-M4 |
|---|---|
| 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 | LSH15 |
| Rail width | 15 mm |
| Carriage style | Square (compact) |
| Carriage length | Standard carriage |
| Carriages supplied | 1 |
| Rail length | 1500 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 kN·m |
| Accuracy grade | N — normal grade |
| Preload grade | C — medium preload |
| Mounting screws | M4 — 412 N·cm into steel, 274 cast iron, 206 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.
| 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. |
| 1X1500 | 1 carriage on a 1500 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| C | C — medium 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. |
| This order | Complete guide set |
|---|---|
| Rail | Yes, 1500 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.
A 1500 mm travel matches benchtop CNC router gantries almost exactly; medium preload C keeps the spindle mount from chattering during plunge cuts in aluminium and hardwood.
On a laser engraver bed of about 1.5 m, the single square carriage rides the full length while preload C damps the micro-vibration that would otherwise show up as banding in the burn.
A packaging-line label head traversing 1.5 m per cycle places its applicator pad on one size 15 carriage; the medium preload holds position against the reciprocating touch-off.
Start by checking that a 1500 mm travel really needs recirculating balls. If the duty is light and the envelope tight, the narrower LRM series may do the job - its load ratings are not published in the catalogue, so ask us to confirm them against your duty before you commit. If instead the moment governs, meaning a load hung off the side of a single carriage, step up to LSH20, whose standard carriage lifts MR from 0.12 to 0.27 kN.m, more than double, for one size change. Where travel is short and you need crossed-roller rigidity rather than long recirculating runs, LGC is the alternative to price.
Before ordering, tick the checklist: form (this is a complete set), size by load AND moment, carriage style and length, carriage count and rail length, accuracy grade, preload against the installation tolerance you can actually hold (preload C needs 13 um parallelism and 35 um height at 500 mm spacing), grease fitting, and the pairing code only if you are buying a replacement part.
Quick checklist
Per carriage: basic dynamic load C 11.3 kN, basic static load C0 17.9 kN, allowable static moments MR 0.12, MP 0.12 and My 0.12 kN.m. Running parallelism for normal (N) grade spans 12-37 um across the rail-length bands. Rail screws are M4, torqued to 412 N.cm in steel, 274 N.cm in cast iron, 206 N.cm in aluminium. Grease: 0.9 cm3 first charge per carriage, 0.3 cm3 top-ups, repeated every 100 km of travel or every 3 to 6 months, whichever comes first.
Preload removes internal clearance by preloading the ball rows, which raises rigidity but leaves the carriage less able to absorb mounting error. At 500 mm rail spacing, size 15 allows 130 um of height error and 25 um of parallelism error with no preload; at preload C those tighten to 35 um and 13 um, and the values scale with the actual spacing. If your machined datum cannot hold that, order preload A or B instead - rigidity you cannot install is rigidity you do not get.
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Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.