Airtac LSH Linear Guide Rail LSH20HN1X390S15AH-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20HN1X390S15AH-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 length390 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 LSH20HN1X390S15AH-M6
The LSH20HN1X390S15AH-M6 is supplied as one assembled unit: a 390 mm size 20 rail - a true 20 mm width - carrying a single square, standard-length block, with end mounting holes just 15 mm from the rail ends for a compact approach to the machine edge. Four rows of balls run in X-arranged 45 degree arc grooves, giving the carriage equal ratings radially, laterally and in lift-off, plus self-alignment that soaks up small errors in the seat beneath it rather than passing them into the ball path.
Accuracy is H, so the catalogue running parallelism band is 7-28 um at this length - the grade to specify when a measuring probe or camera must track the same line stroke after stroke. Per-carriage figures: C 18.6 kN, C0 28.6 kN, MR / MP / My 0.27 / 0.25 / 0.25 kN.m. At 390 mm the rail still leaves over 3.6 m of headroom against the 4040 mm Lmax for size 20, so this axis can be extended later with a longer cut of the same model.
Airtac LSH Linear Guide Rail LSH20HN1X390S15AH-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20HN1X390S15AH-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 | 390 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 LSH20HN1X390S15AH-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. |
| 1X390 | 1 carriage on a 390 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, 390 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 LSH20HN1X390S15AH-M6 Is Used
Probe slide on an inspection machine
A measuring probe or vision camera traversing a 390 mm axis over a part; the 7-28 um H band keeps the probe on the same line, run after run.
Pick-and-place guide
The lateral axis of a small pick-and-place head shifting components between feeders and a PCB; with no preload, friction stays low for quick, clean stops.
Lens alignment stage
Positioning a lens barrel or image sensor in an optical assembly jig, where the 15 mm end offset lets the guide sit close to the fixture edge.
Is the Airtac LSH Linear Guide Rail LSH20HN1X390S15AH-M6 the Right Guide?
Decide by duty first. If a light slide in a cramped envelope does the job, LRM costs less but has no published ratings - we confirm them for you before you commit. Stay on LSH20 when the 7-28 um H band is genuinely needed; if not, the N version of this exact geometry is the value choice. When the load hangs off a lever arm, compare MR 0.27 kN.m against your moment before trusting C alone - and remember one step to LSH25 delivers 0.44 kN.m. Short travel with high stiffness demand points to LGC crossed rollers instead of recirculating balls. Before ordering, check: set versus part, size, carriage style and length, block count, rail length and end offset, accuracy grade, preload, grease fitting, and the pairing code when mixing with existing parts.
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 LSH20HN1X390S15AH-M6 FAQ
One 390 mm rail, 20 mm wide, with one square standard-length carriage; H accuracy gives a 7-28 um running parallelism band. Ratings per carriage: C 18.6 kN, C0 28.6 kN, MR 0.27 / MP 0.25 / My 0.25 kN.m. Rail screws M5 at 882 / 588 / 441 N.cm on steel, cast iron or aluminium. Grease: 1.8 cm3 Mobilux EP2 charged at the factory, 0.6 cm3 top-ups every 100 km or 3 to 6 months.
The 7-28 um H band assumes the rail is pulled flat against its datum and torqued correctly. Counterbores must be clean, the shoulder 4.3 mm with corner radius under 0.5 mm, and bolt caps seated flush so swarf stays out of the ball circuit. Because this set carries no preload, allowable errors at 500 mm spacing are generous: 25 um parallelism and 130 um height. Order a preload grade and those tighten to 18 and 50 um at C - rigidity and installation latitude trade directly against each other.
Authorized Export Seller
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 LSH20HN1X390S15AH-M6
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