
The AirTAC Airtac LSH Linear Guide Rail LSH30HN2X440S20AN-M6 is a standard-type profile linear guide on a 28 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.
LSH30HN2X440S20AN-M6 is the everyday version of the LSH30 square-carriage set: a 440 mm rail, two standard-length blocks, S20 end-hole offset, M6 grease fittings, preload grade A (none) and N (normal) accuracy. Inside each carriage, four rows of balls contact X-configured 45 degree arc raceways at two points per ball, so the block carries the same rating whether the load pushes up, down or sideways, and small flatness errors in the mounting face are taken up within the carriage. Machine the rail seat to 28 mm - the 30 in the code is not the rail width.
Per block the ratings are 37.4 kN dynamic C and 55.0 kN static C0, with moments of 0.66 MR, 0.67 MP and 0.67 My in kN.m; two blocks under the same load double the carried capacity. The normal grade allows 12-37 um of running parallelism across the rail-length band, which is ample for general automation - and because this set carries no preload, the widest installation tolerances of the size remain available to the fitter.
| Model | Airtac LSH Linear Guide Rail LSH30HN2X440S20AN-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 | LSH30 |
| Rail width | 28 mm (the size code is not the rail width above size 20) |
| Carriage style | Square (compact) |
| Carriage length | Standard carriage |
| Carriages supplied | 2 |
| Rail length | 440 mm |
| Basic dynamic load rating C | 37.4 kN per carriage |
|---|---|
| Basic static load rating C0 | 55.0 kN per carriage |
| Allowable static moment | MR 0.66 / MP 0.67 / My 0.67 kN·m |
| Accuracy grade | N — normal grade |
| Preload grade | A — no preload |
| Mounting screws | M8 — 3040 N·cm into steel, 2010 cast iron, 1470 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. |
|---|---|
| 30 | Size code — note the rail is 28 mm wide, not 30 mm. |
| H / F1 / F2 / F3 | Carriage style: square, or flange mounted from the top, bottom, or both. |
| N | Standard carriage. |
| 2X440 | 2 carriages on a 440 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, 440 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 or diverter sliding on 440 mm of normal-grade guide, where 37.4 kN C per block and the two-block layout cover repetitive indexing duty.
A custom jig or adjustable fence on a milling or drilling table - normal accuracy at 12-37 um parallelism is what most shop fixtures actually need.
OEM and one-off machine builders using LSH30 as a general automation axis: 440 mm travel, M8 mounting screws, and the most forgiving installation tolerances this size allows.
Choose by both ratings, not just the bigger static number: C 37.4 kN governs travel life, and MR 0.66 kN.m governs any overhung load. If the moment is the binding figure, one step up to LSH35 (MR 1.05 kN.m) buys about 59 percent more capacity, available to order. If the duty is genuinely light and space is short, LRM is the smaller alternative and we confirm its unpublished ratings for you; for short-travel work needing crossed-roller rigidity, LGC is the sideways move. Match checklist: form (complete set with rail and two blocks), size against load and moment together, carriage style and length, count and rail length, accuracy N with preload A for maximum fitting latitude, M6 grease fitting, and the pairing code if ever replacing a single part.
Quick checklist
Per carriage: C 37.4 kN dynamic, C0 55.0 kN static, MR / MP / My 0.66 / 0.67 / 0.67 kN.m. Normal (N) accuracy means 12-37 um running parallelism across the band. Mounting: M8 screws, 3040 N.cm into steel, 2010 into cast iron, 1470 into aluminium. Lubrication: 5.4 cm3 Mobilux EP2 first charge, 1.7 cm3 top-up through the M6 fitting every 100 km of travel or every 3 to 6 months.
With preload A this set tolerates 40 um parallelism error and 170 um height error per 500 mm of rail spacing - the most forgiving combination in size 30. Stepping to H accuracy tightens running parallelism from the 12-37 um band to 7-28 um but does not change the mounting allowance; only raising the preload does that, and it cuts the same allowances to 30 / 110 um at B or 27 / 90 um at C. Buy the grade the machine actually needs.
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Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.