Airtac LSH Linear Guide Rail LSH20HN1X1188S24AH-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20HN1X1188S24AH-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.
- SeriesLSH
- Supplied asComplete guide set
- SizeLSH20
- Rail width20 mm
- Carriage lengthStandard carriage
- Carriages1
- Rail length1188 mm
- AccuracyH — high grade
- PreloadA — no preload
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac LSH Linear Guide Rail LSH20HN1X1188S24AH-M6
LSH20HN1X1188S24AH-M6 specifies a complete size 20 LSH guide - one 1188 mm profile rail, 20 mm across, matched with a single square standard-length carriage, high (H) accuracy, preload-free, M6 nipple and a 24 mm end-hole offset. The carriage's four ball rows contact X-arranged 45 degree raceways, spreading load equally in four directions and absorbing minor datum errors, and any LSH20 carriage will later fit this rail without losing its smoothness or grade.
Ratings per carriage are 18.6 kN dynamic, 28.6 kN static and an MR moment of 0.27 kN.m. On a bed of this width the moment number often decides before the load one: a mass carried at an offset from the carriage is limited by 0.27 kN.m far sooner than by 18.6 kN. If that bites, a second carriage on the same 1188 mm rail addresses tipping along the travel without re-cutting the rail or re-drilling the bed.
Airtac LSH Linear Guide Rail LSH20HN1X1188S24AH-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20HN1X1188S24AH-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 | 1188 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 | H — high 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.
Model Code: Airtac LSH Linear Guide Rail LSH20HN1X1188S24AH-M6
| 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. |
| 1X1188 | 1 carriage on a 1188 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. |
| H | H — high 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. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 1188 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.
Where the Airtac LSH Linear Guide Rail LSH20HN1X1188S24AH-M6 Is Used
Machine-tending gantry
An overhead gantry carrying a small robot between a lathe and a parts bin on a wide bed; the 0.27 kN.m moment rating is checked against the offset reach of the arm.
Flatbed laser support rail
A support rail under the cutting head of a flatbed laser engraver, where high accuracy holds beam-to-work distance steady across the full 1188 mm of travel.
Modular welding fixture bed
A reconfigurable welding jig whose carriage carries clamps across a chassis; a rail cut to 1188 mm lines up with an existing fixture bolt pattern without re-drilling the bed.
Is the Airtac LSH Linear Guide Rail LSH20HN1X1188S24AH-M6 the Right Guide?
Size by moment first on a bed of this width: 0.27 kN.m MR against 18.6 kN dynamic means offset loads govern. Options in rising order of cost are the long LSH20L carriage (MR 0.35 kN.m), a second block on the same rail, or one size up to LSH25 (MR 0.44 kN.m). Downwards, LRM serves light compact duties, though its ratings are unpublished and we confirm them case by case; sideways, LGC suits short travel where crossed-roller rigidity beats recirculating travel. The H grade here repays only where the 1188 mm base is machined flat and torqued properly - on a rougher structure the N version delivers nearly as much in practice.
Match checklist: form (complete set), load and moment, carriage style and length, count and rail length, accuracy and preload weighed against installation tolerance, grease fitting, and the pairing code for part replacement.
Quick checklist
- ✓ Complete set, carriage only, or rail only?
- ✓ Worst-case moment, not just straight load
- ✓ Travel length and mounting space
- ✓ Accuracy grade and preload
- ✓ Mounting surface ground or finish-milled
- ✓ Pairing code, if replacing a part
Installation & Maintenance Notes
- check Mounting surface must be ground or finish-milled.
- check Torque the rail screws per the recommended figures, in sequence.
- check Keep the mounting corner radius inside the stated R maximum.
- check Do not angle the carriage onto the rail; balls can drop out.
- check Drive the supplied bolt caps into the mounting holes.
- check Re-grease every 100 km of travel or every 3–6 months.
- check Installation by qualified personnel per AirTAC docs.
Airtac LSH Linear Guide Rail LSH20HN1X1188S24AH-M6 FAQ
Per carriage: dynamic C 18.6 kN, static C0 28.6 kN, moments MR 0.27, MP 0.25, My 0.25 kN.m. High accuracy gives a 7 to 28 um running parallelism band. Rail fixing is M5 screws at 882 / 588 / 441 N.cm on steel / cast iron / aluminium, with mounting-shoulder corner radius kept at or below 0.5 mm. Grease is Mobilux EP2: 1.8 cm3 charge, 0.6 cm3 top-ups every 100 km of travel or every 3 to 6 months, through the M6 fitting.
The H grade limits running parallelism to 7 to 28 um, but the achieved figure is set by the bed: flatness error over the 1188 mm span and correct M5 torquing decide how much of that band you get, so H pays on a machined base and may be wasted on a rough one. This set has preload A, the loosest grade, tolerating 25 um parallelism and 130 um height error at 500 mm spacing; medium preload C would demand 18 and 50 um respectively. Order B or C only if you can hold those surfaces.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac LSH Linear Guide Rail LSH20HN1X1188S24AH-M6
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