
The AirTAC Airtac LSH Linear Guide Rail LSH20HN2X600S30AN-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.
LSH20HN2X600S30AN-M6 is a full LSH size 20 guide set: a 600 mm rail of true 20 mm width carrying two square, standard-length carriages, preload-free, normal accuracy, an M6 lubrication point on each block and a 30 mm first-hole offset at the rail ends. Ball rows sit at 45 degrees in an alternating X-pattern of arc raceways, so radial, reverse-radial and both lateral directions carry equal rating, and minor datum-surface error is taken up within the carriage instead of gripping the slide. Spare blocks are interchangeable across this model - a fresh LSH20 carriage drops onto this rail and keeps its running qualities, preload and accuracy.
Per-carriage figures: 18.6 kN dynamic, 28.6 kN static, moments 0.27 / 0.25 / 0.25 kN.m for MR / MP / My. Six hundred millimetres of rail leaves about 3440 mm of headroom below the 4040 mm maximum for this size, so the same axis can be re-ordered much longer if the machine grows. Each block arrives pre-filled with 1.8 cm3 of Mobilux EP2, and the 100 km re-grease mark arrives faster than it sounds: a 400 mm stroke cycled every two seconds covers 100 km in under six days of continuous running, so distance binds before the calendar does.
| Model | Airtac LSH Linear Guide Rail LSH20HN2X600S30AN-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 | 600 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. |
| 2X600 | 2 carriages on a 600 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, 600 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 pusher arm crossing a wide conveyor in a distribution centre uses the 600 mm stroke; carriages are interchangeable, so a worn block can be swapped without disturbing the rail or its alignment.
A welding positioner index slide carries a clamp fixture across 600 mm; two carriages spaced along the rail take the moment when the clamped part cantilevers off the slide face.
A cable test rig walking a specimen back and forth over 600 mm; lubrication is distance-based, and a long stroke makes the 100 km re-grease point arrive sooner, so fit the M6 fitting where an operator can reach it.
Check downward first: a light duty in a cramped envelope may fit the LRM miniature series better, though its load ratings are not published, so ask us to confirm them against your duty. Upward, if the moment governs a cantilever, one size up is more effective than another block - LSH25 N raises MR about 63 percent to 0.44 kN.m in a single part. Across, for short-stroke work needing crossed-roller rigidity rather than long recirculating travel, the LGC series is the alternative. Before ordering, tick off: form (this is the full rail-and-two-carriage set), size by load and moment together, carriage style and length, block count and rail length (600 mm here, extendable toward the 4040 mm maximum), accuracy and preload against the mounting tolerance you can actually achieve, the grease fitting for maintenance access, and the pairing code if you will hold spare carriages.
Quick checklist
Per standard-length carriage: 18.6 kN basic dynamic, 28.6 kN basic static, moments 0.27 / 0.25 / 0.25 kN.m for MR / MP / My. N accuracy means running parallelism within a 12-37 um band at this rail length. Mounting: M5 cap screws, torqued to 882 / 588 / 441 N.cm in steel / cast iron / aluminium. Grease: initial fill 1.8 cm3 of Mobilux EP2, then 0.6 cm3 top-ups every 100 km of travel or every 3 to 6 months, whichever arrives first.
No. Grade A gives the most forgiving installation: at 500 mm rail spacing this size accepts 25 um of parallelism error and 130 um of height error, and the values scale with your actual spacing. Preload B narrows that to 20/85 um and preload C to 18/50 um, so rigidity is traded directly against mounting accuracy. For general automation duty at size 20, no preload plus two carriages is the standard, sensible combination.
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