
The AirTAC Airtac LSH Linear Guide Rail LSH20HN2X760S20AN-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.
Decode LSH20HN2X760S20AN-M6 and you get a finished size 20 LSH guide: two square standard carriages already running on one 760 mm hardened profile rail, 20 mm end-hole offset, side M6 fitting, normal accuracy, preload A (none). This is a mechanical linear motion component - it supports and guides load, and has nothing to do with compressed air. The 20 mm rail width and the four-row, 45 degree ball geometry give each carriage the same rating in every direction, with enough built-in self-alignment to forgive small machining errors on the mounting face.
Static capacity per block is 28.6 kN against 18.6 kN dynamic - about 1.5 times - and that margin is what absorbs shock and dwell loads; travel life is calculated from the dynamic figure, not the bigger static one. At 760 mm the rail sits well inside the 4040 mm maximum length for size 20, leaving roughly 3280 mm of headroom if the machine is ever stretched. Because both blocks travel together on one rail, the pair also holds the moving plate level against loads applied along the direction of travel.
| Model | Airtac LSH Linear Guide Rail LSH20HN2X760S20AN-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 | 760 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. |
| 2X760 | 2 carriages on a 760 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, 760 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 laboratory sampler moving probes between vial trays over roughly 760 mm; normal grade is ample for tray pitch, and the 28.6 kN static rating per block carries a fully loaded tray with margin.
A gate sliding out to push parcels off a sorter belt; the two-block layout keeps the gate square to the belt even under off-centre impacts from packages.
A feeder indexing components into a test fixture on short, rapid strokes: run continuously, such a slide can pass the 100 km grease interval in days rather than months, so the distance rule binds well before the calendar does.
This is a mid-length single-rail axis, so plan the surrounding mechanics around it: machine a datum face, respect the M5 screw torques, and keep the corner radius at the rail shoulders at or below 0.5 mm or the rail will not pull down flat - and how flat it pulls down has a large effect on the accuracy you actually get. If your duty turns out lighter than expected, LRM is the compact series to step down; we confirm its unpublished ratings case by case. If the load is cantilevered, prefer a long LSH20 carriage (MR 0.35 kN.m) or step up to LSH25 (MR 0.44 kN.m); a second carriage on the same rail, as fitted here, addresses tipping along travel instead. For short strokes needing crossed-roller rigidity, compare LGC. Order checklist: form, size by load AND moment, carriage style and length, block count, rail length, accuracy and preload weighed against your mounting tolerance, grease fitting, and the pairing code for part replacement.
Quick checklist
Each standard-length LSH20 carriage is rated 18.6 kN dynamic (C) and 28.6 kN static (C0), with moments of 0.27 kN.m MR, 0.25 kN.m MP and 0.25 kN.m My. N-grade running parallelism falls between 12 and 37 um depending on rail length. Mount the rail with M5 screws at 882 / 588 / 441 N.cm in steel / cast iron / aluminium. Lubrication is Mobilux EP2 or equivalent: 1.8 cm3 at first fill, 0.6 cm3 top-ups, every 100 km of travel or every 3 to 6 months.
Yes - this code is the complete assembly: the 760 mm rail arrives with both square blocks mounted, pre-greased and capped. Preload is A, meaning none; the same geometry can be ordered as B (light) or C (medium), but each step raises rigidity at the cost of installation latitude - at 500 mm spacing the allowed height error drops from 130 um to 85 um (B) to 50 um (C). Spare blocks or a spare rail can be bought separately using the matching pairing code.
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.