Airtac LSH Linear Guide Rail LSH20HN1X760S20AH-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20HN1X760S20AH-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 length760 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 LSH20HN1X760S20AH-M6
This SKU is the full assembly: a 760 mm LSH20 profile rail with one standard-length square carriage riding it, ready to bolt down as a matched pair. The carriage's four ball rows meet the raceways in an X pattern at 45 degrees, giving two-point contact per ball, identical capacity in every direction, and enough internal compliance to soak up small errors in the mounting face without jamming. The rail is 20 mm wide and carries grade H accuracy.
Mounting numbers worth having before you machine the base: fixing screws are M5, torqued to 882 N.cm in steel, 588 N.cm in cast iron and 441 N.cm in aluminium; shoulder height is 4.3 mm with H1 3.5 and H2 5 mm, and the corner radius at the rail edge must not exceed 0.5 mm. Per carriage the ratings are C 18.6 kN, C0 28.6 kN and moment limits of 0.27 / 0.25 / 0.25 kN.m. Whether the rail is pulled flat against its datum and torqued exactly as specified has a large effect on the accuracy you actually get - a grade H rail bolted down carelessly behaves no better than grade N.
Airtac LSH Linear Guide Rail LSH20HN1X760S20AH-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20HN1X760S20AH-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 | 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 | 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 LSH20HN1X760S20AH-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. |
| 1X760 | 1 carriage 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. |
| 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, 760 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 LSH20HN1X760S20AH-M6 Is Used
Liquid-handling X bridge
A laboratory liquid-handling station sweeping sample plates across a 760 mm bench benefits from grade H parallelism - the pipette bridge tracks within the 7-28 um band over the full stroke.
Laser engraver gantry rail
One rail under a laser engraver's moving gantry plate is a natural fit; the square carriage bolts from above and the 20 mm rail spans the bed without needing a bulky support extrusion.
Conveyor diverter slide
Builders of small conveyor diverters mount the pusher plate on this set; the four-row ball circuit tolerates the slight flatness error typical of welded frames, provided it stays within the published limits.
Is the Airtac LSH Linear Guide Rail LSH20HN1X760S20AH-M6 the Right Guide?
Choose by form first: this code is a complete set, so order it for new builds or a full re-line; if only the carriage has worn and the rail still runs smooth, buy the carriage-only LSH20BK code with the same pairing letter instead - it costs roughly a quarter of a full set. Then check size against both load and moment, carriage style (H square here, flanged alternatives for other mounting), length, count and rail length. Grade H with no preload suits most machine tools and automation; adding preload improves rigidity but narrows the allowable height error from 130 um to 85 um at grade B and 50 um at grade C. Confirm the M6 grease fitting clears surrounding parts before finalising the layout. When light duty and a small envelope drive the design, compare the LRM series (ratings unpublished - we confirm them on RFQ); for short travel needing roller stiffness, step across to LGC.
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 LSH20HN1X760S20AH-M6 FAQ
Per carriage: C 18.6 kN dynamic, C0 28.6 kN static, moments MR 0.27 / MP 0.25 / My 0.25 kN.m. Running parallelism at grade H: 7-28 um depending on rail length. Fix with M5 screws at 882 / 588 / 441 N.cm in steel / cast iron / aluminium. The carriage arrives with about 1.8 cm3 of Mobilux EP2 pre-filled; re-grease with 0.6 cm3 every 100 km of travel or every 3 to 6 months, whichever comes first.
Only if your mounting surface can support it. Without preload (A) you may run up to 25 um parallelism error and 130 um height difference between rails at 500 mm spacing, pro-rated to actual spacing. Light preload B narrows those to 20 and 85 um, medium C to 18 and 50 um. The self-aligning design absorbs error only inside those windows, not unlimited misalignment. On a single-rail application like this, staying at grade A usually wins on cost and ease of installation.
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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 LSH20HN1X760S20AH-M6
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