Airtac LSH Linear Guide Rail LSH20F2N2X390S15AN-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20F2N2X390S15AN-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
- Carriages2
- Rail length390 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 LSH20F2N2X390S15AN-M6
This set pairs two F2 bottom-flange carriages with a short 390 mm LSH20 rail, cut with a 15 mm end-hole offset instead of the usual 20 mm - the mounting holes start closer to the rail ends, which matters when laying out a compact fixture plate. Preload is A (none), accuracy N, and each block takes an M6 nipple. The shipment is rail, two carriages and bolt caps. As with the whole LSH range, four rows of balls sit in 45 degree X raceways, so capacity is the same up, down and sideways, and the blocks self-align over slight mounting errors. The 20 size is a 20 mm rail width in fact as in code.
Per block: 18.6 kN dynamic C, 28.6 kN static C0, 0.27/0.25/0.25 kN.m MR/MP/My. Two blocks on 390 mm keep the moment arm short - well matched to a compact axis whose load sits close over the rail. If a redesign moves the load further out, remember MR grows fast with lever arm; stepping the whole assembly to LSH25 lifts MR about 63 percent, to 0.44 kN.m. With no preload, the seated rail tolerates 130 um height error at 500 mm spacing, so a straightforward machined base is enough.
Airtac LSH Linear Guide Rail LSH20F2N2X390S15AN-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20F2N2X390S15AN-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 | Flange, bottom mounting |
| Carriage length | Standard carriage |
| Carriages supplied | 2 |
| 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 | 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 LSH20F2N2X390S15AN-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. |
| 2X390 | 2 carriages 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. |
| 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, 390 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 LSH20F2N2X390S15AN-M6 Is Used
Benchtop glue-dispensing robot
A small three-axis dispenser traverses its X beam on the two F2 blocks over 390 mm; bottom-flange mounting leaves the beam top free for the valve manifold and nozzle cluster.
Tube-straightening head traverse
On a small tube mill, the straightening head indexes along the 390 mm rail on twin blocks, each rated 0.27 kN.m MR, sharing the side thrust between them instead of loading one point.
Workshop vinyl-cutter retrofit
Converting a worn rack-and-pinion vinyl cutter to ball guides, the builder bolts the F2 blocks up under the cutting beam from below, keeping the cutting-strip area clear above.
Is the Airtac LSH Linear Guide Rail LSH20F2N2X390S15AN-M6 the Right Guide?
Size this short axis by moment before load: with blocks only 390 mm apart, a cantilevered load sees little support, so check MR first. If the duty is light and space is tightest, LRM is the smaller series - its ratings are unpublished, so we confirm them with you - and if the travel stays short but needs crossed-roller rigidity, run the LGC comparison. Stay with LSH20 for a published 18.6 kN C, grease-lubricated running and the widest choice of rail lengths. The match checklist: form (this code is a complete set), size by load and moment, F2 style, two blocks, 390 mm rail with the S15 end offset, N accuracy, no preload weighed against the 130 um height tolerance, M6 fitting. Replacing a single part later? Match the pairing code shared by the original carriage and rail.
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 LSH20F2N2X390S15AN-M6 FAQ
Per standard LSH20 carriage: C 18.6 kN dynamic, C0 28.6 kN static, moments MR 0.27, MP 0.25, My 0.25 kN.m; N grade running parallelism spans 12-37 um by rail length. Fix the rail with M5 screws at 882 N.cm into steel, 588 into cast iron, 441 into aluminium, with a mounting-surface corner radius no more than 0.5 mm. Lubricate each block with 1.8 cm3 of Mobilux EP2 at first charge, 0.6 cm3 at top-up, repeated every 100 km of travel or every 3 to 6 months.
You receive one 390 mm rail, two F2 carriages and the bolt caps - a working ball-guide axis, not a pneumatic cylinder and not a bare component. S15 sets the first mounting hole 15 mm from each rail end rather than the standard 20 mm, so check your hole pattern against it. If you ever need only the carriage or only the rail, order that part alone; carriage and rail must carry the same pairing code, which you read off the original component.
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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 LSH20F2N2X390S15AN-M6
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