
The AirTAC Airtac LSH Linear Guide Rail LSH20HN1X1100S40AN-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.
This AirTAC LSH set, LSH20HN1X1100S40AN-M6, delivers just over a metre of guided travel in size 20 with the most forgiving configuration in the catalogue: 1100 mm rail, one standard-length square carriage, normal accuracy, and no preload (code A). Inside the block, four ball rows in X-crossed 45 degree raceways give the same load capacity in every direction and let the carriage absorb slight errors in the mounting surface instead of jamming on them. Size 20 here means a true rail width of 20 mm, and the set ships with its bolt caps included.
Each carriage is rated 18.6 kN dynamic and 28.6 kN static, with moments of 0.27 / 0.25 / 0.25 kN.m (MR / MP / My), and 1100 mm still leaves about 2940 mm below the 4040 mm maximum rail length for this size. Because preload A tolerates the most installation error - height deviation up to 130 um at 500 mm rail spacing versus 50 um on the medium-preload version - this is the configuration to choose when the baseplate is a welded frame or a plainly milled plate rather than a ground datum.
| Model | Airtac LSH Linear Guide Rail LSH20HN1X1100S40AN-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 | 1 |
| Rail length | 1100 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. |
| 1X1100 | 1 carriage on a 1100 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, 1100 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.
Sliding a reject gate across the end of a packaging conveyor; without preload the set shrugs off the misalignment typical of welded conveyor frames, and 1100 mm covers the gate's full park-and-divert travel.
Guiding the pusher that moves a carton from an infeed belt into a case; the 28.6 kN static rating covers the occasional side knock, and normal accuracy is entirely adequate for a transfer stroke.
A rig that cycles components back and forth on a test bench; the unpreloaded carriage minimises drag so the drive sees the specimen's resistance rather than the guide's, and re-lubrication is a 0.6 cm3 job every 100 km.
With no preload this set forgives the most imperfect mounting, so start by judging your baseplate: at 500 mm spacing the allowable height error is 130 um and the parallelism error 25 um, scaled to the real span, and the self-aligning carriage absorbs small residual error - within those values, not beyond them. Then size the duty both ways: C of 18.6 kN governs travel life while C0 of 28.6 kN is the static ceiling, roughly one and a half times higher; if a cantilevered load makes moment the deciding figure, a long carriage raises MR from 0.27 to 0.35 kN.m and a step to LSH25 reaches 0.44. Light, compact duties belong on LRM (ratings not published - we confirm them against your application); short travel demanding crossed-roller stiffness points to LGC instead. Before ordering: complete-set form, size, square standard carriage, carriage count, rail length and end offset, accuracy N, preload A, M6 fitting, and the pairing code for any later part replacement.
Quick checklist
For each standard square carriage: C 18.6 kN dynamic, C0 28.6 kN static, and allowable moments of 0.27 kN.m in MR, 0.25 kN.m in MP and 0.25 kN.m in My. N-grade running parallelism ranges from 12 to 37 um according to rail length. Fix the rail with M5 screws at 882 N.cm on steel, 588 N.cm on cast iron or 441 N.cm on aluminium. Lubrication is Mobilux EP2, 1.8 cm3 per carriage at first charge and 0.6 cm3 at each top-up, repeated every 100 km of motion or every 3 to 6 months.
The set comprises a single 1100 mm size 20 rail, one standard square carriage fitted with an M6 nipple, and the rail's plastic bolt caps. Screws, brackets and any second-axis hardware are not part of the supply. Fit the caps properly: press each into its counterbore, cover with a flat plate and strike vertically with a plastic mallet, then wipe the rail clean - a cap left out, or one standing above the rail top face, invites swarf into the ball recirculation and degrades running smoothness.
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Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
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Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.