
The AirTAC Airtac LSH Linear Guide Rail LSH15HN1X140S10BH-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.
LSH15HN1X140S10BH-M4 is a rigid, high-accuracy size 15 set built around a 140 mm rail with a 10 mm end-hole offset: one square, standard-length carriage, preload grade B, accuracy grade H, M4 grease fitting. The four-row, 45 degree X-geometry of the LSH range gives the carriage identical load capacity up, down and to either side, and its self-aligning behaviour soaks up small errors in the machined face it sits on. Rail width on size 15 is a true 15 mm. Rail and carriage are supplied together as one set.
The light preload stiffens the carriage against reversal and vibration, but it narrows what the mounting surface may be out by: at 500 mm spacing the allowable height error is 85 um and parallelism 18 um, against 130 um and 25 um for a zero-preload set. Carrying the H grade means running parallelism between 7 and 28 um over the length. Per carriage, count on 11.3 kN dynamic, 17.9 kN static and 0.12 kN.m of static moment about MR, MP and My. Seat the rail against its datum and torque the M4 screws properly - how flat the rail is pulled down decides how much of that accuracy survives.
| Model | Airtac LSH Linear Guide Rail LSH15HN1X140S10BH-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 | 140 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 | H — high grade |
| Preload grade | B — light 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. |
| 1X140 | 1 carriage on a 140 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| B | B — light 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. |
| This order | Complete guide set |
|---|---|
| Rail | Yes, 140 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.
Moves a dial indicator or camera across a workpiece in a small QC setup. Grade H running parallelism of 7-28 um and preload B give repeatable, play-free readings stroke after stroke.
Positions a guide gate or nozzle holder that is adjusted between product changes. Light preload resists line vibration, and the 140 mm rail covers the adjustment range without excess frame width.
Bolted into a milled aluminium fixture. Use the 206 N.cm aluminium torque, keep pocket corner radii at or under 0.5 mm, and drive the bolt caps home so chips stay out of the ball circuit.
Work the checklist in order: form (a complete set, not a spare part), size against both load and moment, carriage style and length, count, rail length and end offset, accuracy and preload, grease fitting, and the pairing code when matching to existing parts. This version's preload B and H accuracy only deliver their benefit if the mounting face is machined to the size 15 tolerances and the corner radii stay at or below 0.5 mm. If your duty is lighter and the space tighter, LRM may be the economical choice - its load ratings are not published, so we confirm them with you. For short travel needing maximum rigidity, look at LGC crossed-roller guides instead. If moment capacity is what limits you, a long carriage or a move up to LSH20 gains more than extra static margin does.
Quick checklist
Per standard carriage: dynamic rating 11.3 kN, static rating 17.9 kN, static moment 0.12 kN.m about each of MR, MP and My. Running parallelism for accuracy grade H is 7-28 um depending on rail length. Rail fixing is M4 screws at 412 N.cm into steel, 274 N.cm into cast iron, 206 N.cm into aluminium. Lubrication: about 0.9 cm3 Mobilux EP2 charged at the factory, topped up with 0.3 cm3 via the M4 fitting every 100 km of travel or every 3 to 6 months.
Preload B and grade H only survive if the set is fitted well. Machine the mounting shoulders with a corner radius of 0.5 mm or less, keep within 18 um of parallelism and 85 um of height error at 500 mm spacing, and pull the rail flat against its datum with the M4 screws fully torqued - a rail left slightly loose loses much of its stated accuracy. Drive the supplied bolt caps fully into the counterbores using a flat plate and a plastic mallet so swarf cannot enter the ball circuit, then clean the rail top.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.