Airtac LSH Linear Guide Rail LSH20HL2X780S20AN-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20HL2X780S20AN-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 lengthLong carriage
- Carriages2
- Rail length780 mm
- AccuracyN — normal 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 LSH20HL2X780S20AN-M6
Two long square carriages ride one 780 mm rail in the LSH20HL2X780S20AN-M6 set - that is how you stiffen an axis against overturning without changing the rail size. Each block runs four rows of recirculating balls on 45 degree X-crossed arc raceways, carrying load equally in all four directions, and spacing the pair along the rail creates a long effective footprint that resists tipping as the load travels. Rail width for size 20 is 20 mm, and with no preload both blocks run freely.
Ratings remain per carriage: 22.2 kN dynamic and 37.6 kN static each, with static moments of 0.35 / 0.34 / 0.34 kN.m (MR / MP / My); the catalogue publishes no combined two-block figures, so check the worst-loaded block rather than the average. The 780 mm rail sits well under the 4040 mm maximum for this size. During fitting, drive the supplied bolt caps fully into the rail's counterbores so swarf cannot reach the ball circuit - seat each cap, lay a flat plate over it, tap vertically with a plastic mallet, then clean the rail so no cap stands proud of the top face.
Airtac LSH Linear Guide Rail LSH20HL2X780S20AN-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20HL2X780S20AN-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 | Long carriage |
| Carriages supplied | 2 |
| Rail length | 780 mm |
| Basic dynamic load rating C | 22.2 kN per carriage |
|---|---|
| Basic static load rating C0 | 37.6 kN per carriage |
| Allowable static moment | MR 0.35 / MP 0.34 / My 0.34 kN·m |
| Accuracy grade | N — normal 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 LSH20HL2X780S20AN-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. |
| L | Long carriage. |
| 2X780 | 2 carriages on a 780 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. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 780 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.
Where the Airtac LSH Linear Guide Rail LSH20HL2X780S20AN-M6 Is Used
High-cycle pick-and-place over a long stroke
Two spaced blocks keep the gantry plate level over a 780 mm stroke as a vacuum head swings parts between conveyor and tray; no preload minimizes drag at high cycle rates.
Parcel dimensioning scanner gantry
Carries a scanning bridge over parcels passing on a sortation conveyor; the pair of long blocks stabilizes the wide frame against pitch along the full travel.
Cable harness test trolley
A trolley guiding test fixtures along a 780 mm rail in a wiring-loom test rig; the two-block base resists tipping when operators load harnesses onto one side.
Is the Airtac LSH Linear Guide Rail LSH20HL2X780S20AN-M6 the Right Guide?
A two-block set earns its keep when the load cantilevers off the side of the carriage plate or hangs ahead of the blocks: the spaced pair resists tipping along the travel direction far better than a single long block can. Keep the sizing honest - each carriage counts against 22.2 kN dynamic and 0.35 kN.m of moment, so verify the governing case. If the moment still governs, one size up to LSH25 raises MR to 0.44 kN.m per block; if the envelope is small and the duty light, LRM is the compact alternative (ratings unpublished - we confirm them per job); and for short travel needing crossed-roller stiffness, look at LGC instead.
Checklist before you order: complete set or spare parts, size against load and moment, square or flange, standard or long block, block count and rail length, accuracy and preload versus the mounting tolerance you can hold, grease fitting, and the pairing code for any future single-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 LSH20HL2X780S20AN-M6 FAQ
The catalogue rates each carriage individually, and both blocks here are identical long square units: 22.2 kN dynamic (C), 37.6 kN static (C0), and allowable static moments of 0.35 (MR), 0.34 (MP), 0.34 (My) kN.m per block. No combined two-carriage rating exists, so design to the worst-loaded block. Running parallelism for the N grade falls in a 12-37 um band over the rail length. Mounting uses M5 screws at 882 N.cm (steel), 588 N.cm (cast iron), 441 N.cm (aluminium). Each carriage holds 2.7 cm3 of Mobilux EP2 initially and takes 0.9 cm3 top-ups via its M6 fitting, every 100 km of travel or 3 to 6 months, whichever comes first.
Yes - the 2 in the code means two long square carriages supplied on one 780 mm rail, with the rail's bolt caps included; nothing else is required to build the axis. LSH carriages of a given model are interchangeable with its rails, so any LSH20 carriage will run on this rail with its smoothness and accuracy intact. If one block ever wears out, you can order a carriage-only (BK) code matched to the pairing letter of the original set instead of replacing the whole assembly - a carriage typically costs about a quarter of a complete set, which makes it the economic repair provided the rail is sound.
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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 LSH20HL2X780S20AN-M6
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