Airtac LSH Linear Guide Rail LSH20HN1X340S20AH-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20HN1X340S20AH-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 length340 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 LSH20HN1X340S20AH-M6
This LSH20HN1X340S20AH-M6 is a complete AirTAC LSH linear guide set: one square (H) standard-length carriage delivered pre-fitted on a 340 mm size 20 profile rail, with the outermost mounting holes set 20 mm in from the rail ends. The carriage runs on four rows of recirculating balls seated in X-shaped 45 degree arc raceways, so capacity is equal downward, sideways and in lift-off, and slight errors in the mounting surface are absorbed inside the block instead of turning into binding. For size 20 the code and the dimension agree: the rail is a true 20 mm wide.
The H accuracy grade gives a running parallelism band of 7-28 um over this rail length, and the standard-length carriage carries dynamic C 18.6 kN, static C0 28.6 kN and moments of 0.27 / 0.25 / 0.25 kN.m (MR / MP / My). Note that static sits near 1.5 times dynamic across the LSH range: size the axis on C for travel life, not on the bigger C0 figure. At 340 mm this rail sits far below the 4040 mm maximum length for size 20, so a longer or shorter cut of the same model stays open if the machine grows.
Airtac LSH Linear Guide Rail LSH20HN1X340S20AH-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20HN1X340S20AH-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 | 340 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 LSH20HN1X340S20AH-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. |
| 1X340 | 1 carriage on a 340 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, 340 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 LSH20HN1X340S20AH-M6 Is Used
Laser engraving gantry
A 340 mm size 20 guide under a diode-laser head on a small engraver: the H grade's 7-28 um parallelism keeps the beam path straight along the whole stroke.
Optical inspection slide
Carrying a camera or microscope objective along a 340 mm axis in a lab rig, where straight, repeatable travel matters more than raw load capacity.
Dosing head slide
A glue or filler nozzle traversing a 340 mm pass above a workpiece; the no-preload A spec runs freely for smooth starts and the M6 fitting accepts a grease tube.
Is the Airtac LSH Linear Guide Rail LSH20HN1X340S20AH-M6 the Right Guide?
Work the checklist for this SKU: form is a complete set (rail plus one square carriage, nothing else to buy); size 20 chosen on load AND moment together - C 18.6 kN covers many light machine duties, but a cantilevered head is often limited by MR 0.27 kN.m, and one step up to LSH25 lifts MR to 0.44 kN.m, about 63 percent, for a single part. Step down to LRM when the duty is light and the envelope tight; its load ratings are not published, so we confirm them for you by RFQ. Step across to LGC when travel is short and the job needs crossed-roller rigidity rather than long recirculating travel. Order the H grade only where the 7-28 um parallelism band earns its keep; the N version of the same geometry is the value choice otherwise. Lubrication here is the M6 fitting family, correct for sizes 20 to 35.
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 LSH20HN1X340S20AH-M6 FAQ
Per standard-length carriage: dynamic C 18.6 kN, static C0 28.6 kN, moments MR 0.27 / MP 0.25 / My 0.25 kN.m. H grade running parallelism is 7-28 um. Mount the rail with M5 screws at 882 / 588 / 441 N.cm on steel, cast iron or aluminium. Each carriage ships charged with 1.8 cm3 of Mobilux EP2; top up 0.6 cm3 every 100 km of travel or every 3 to 6 months, whichever comes first.
Yes - light preload B and medium preload C exist as complete size 20 sets. Rigidity costs installation latitude: at 500 mm rail spacing the allowable height error S drops from 130 um with no preload to 85 um at B and 50 um at C, and allowable parallelism P from 25 um to 20 then 18 um. Your mounting face must be machined to match: shoulder height 4.3 mm, corner radius 0.5 mm max, and the bolt caps seated flush or swarf reaches the ball circuit.
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 LSH20HN1X340S20AH-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.