
The AirTAC Airtac LSH Linear Guide Rail LSH20HN2X1480S20AN-M6 is a standard-type profile linear guide on a 20 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.
LSH20HN2X1480S20AN-M6 arrives as a matched set: a 1480 mm hardened profile rail with two square standard-length carriages running on it. Four rows of balls meet X-shaped raceways at 45 degrees, giving equal capacity radially, laterally and in every moment direction, and the self-aligning action soaks up small errors in the mounting face rather than jamming the carriage. The size code matches the true rail width here: 20 mm.
The decisive figures for a moving carriage are dynamic C 18.6 kN and the moment ratings MR/MP/My of 0.27/0.25/0.25 kN.m per block, with static C0 at 28.6 kN - roughly 1.5 times C, as it is across the whole range. Fitting two blocks halves the shared load and, more importantly, stops a tall or overhung load from tipping about the travel axis. Accuracy is N grade with preload A, and the rail ends are drilled 20 mm in for the fixing screws.
| Model | Airtac LSH Linear Guide Rail LSH20HN2X1480S20AN-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 | LSH20 |
| Rail width | 20 mm |
| Carriage style | Square (compact) |
| Carriage length | Standard carriage |
| Carriages supplied | 2 |
| Rail length | 1480 mm |
| Basic dynamic load rating C | 18.6 kN per carriage |
|---|---|
| Basic static load rating C0 | 28.6 kN per carriage |
| Allowable static moment | MR 0.27 / MP 0.25 / My 0.25 kN·m |
| Accuracy grade | N — normal grade |
| Preload grade | A — no preload |
| Mounting screws | M5 — 882 N·cm into steel, 588 cast iron, 441 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. |
|---|---|
| 20 | Size code. |
| H / F1 / F2 / F3 | Carriage style: square, or flange mounted from the top, bottom, or both. |
| N | Standard carriage. |
| 2X1480 | 2 carriages on a 1480 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. |
| 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, 1480 mm |
| Carriage | Yes, 2 |
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 fixture slide carrying a nest of parts between two stations stays level because the two blocks on this 1480 mm rail resist tipping along the travel, not just underneath it.
Normal grade N and no preload keep running drag low, and the 18.6 kN dynamic rating per carriage leaves headroom for a fast horizontal pusher cycling continuously.
A CO2 laser head bridge rides on two carriages per rail so the beam path does not yaw; the 0.27 kN.m MR rating per block covers the cantilevered lens barrel.
If your moment calculation, not your load, sits close to the limit, one size up helps more than a third carriage: LSH25 raises MR to 0.44 kN.m, about 63 percent over this block. A long LSH20 carriage is the other lever, trading a little envelope for higher moment capacity. For light duties in tight spaces ask about LRM, whose ratings we confirm case by case, and for short-stroke work needing crossed-roller rigidity look at LGC. Before ordering confirm: set versus carriage-only versus rail-only, size by load and moment together, carriage style and length, block count and rail length, accuracy and preload against your mounting accuracy, grease fitting, and the pairing code if you are matching parts later.
Quick checklist
Per standard carriage: C 18.6 kN dynamic, C0 28.6 kN static, moments MR 0.27 / MP 0.25 / My 0.25 kN.m. Accuracy N runs at 12-37 um parallelism. Fix the rail with M5 screws at 882 / 588 / 441 N.cm on steel, cast iron or aluminium. Grease charge 1.8 cm3 per block, top up 0.6 cm3 every 100 km of travel or every 3 to 6 months.
One 1480 mm rail with two square carriages already fitted, plus the bolt caps that seal the mounting holes. Carriages and rails of the same LSH model are interchangeable, so a replacement carriage keeps its smoothness, preload and accuracy on any rail of this model. If you ever order parts separately, the pairing code letter on the rail and carriage must match - read it off the original part before ordering.
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.