Airtac LSH Linear Guide Rail LSH20HN2X1540S20AN-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20HN2X1540S20AN-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 length1540 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 LSH20HN2X1540S20AN-M6
LSH20HN2X1540S20AN-M6 is a complete two-block guide set built around a 1540 mm rail - a long axis, though still 2500 mm short of the 4040 mm maximum length for size 20, so longer travel remains possible on the same platform. The rail mounts top-lock from above with M5 screws, and the profile leaves a 5 mm shoulder clearance (H2) beside the fixing bolts with a corner radius limit of R0.5 mm on the mating surface.
Getting the specified accuracy out of an N-grade, no-preload set is mostly a mounting-surface job: drive the M5 screws to 882 N.cm on steel, 588 on cast iron, 441 on aluminium, seat the supplied bolt caps fully below the rail top face, and stay within the 25 um parallelism and 130 um height allowances at 500 mm spacing. Each of the two standard carriages rates C 18.6 kN, C0 28.6 kN, moments 0.27/0.25/0.25 kN.m, and the four-row 45 degree ball layout self-aligns the small residual error.
Airtac LSH Linear Guide Rail LSH20HN2X1540S20AN-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20HN2X1540S20AN-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 | 2 |
| Rail length | 1540 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 LSH20HN2X1540S20AN-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. |
| 2X1540 | 2 carriages on a 1540 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, 1540 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 LSH20HN2X1540S20AN-M6 Is Used
Gantry robot seventh axis
A linear module extending a robot's reach over 1.5 m relies on the two blocks to keep the carriage square, and on correctly torqued M5 fixings so the rail stays pulled flat against the beam.
Packaging line divert gate
A divert gate sliding product across a conveyor is guided by this set; the top-lock rail mounting lets the builder machine and drill the frame from above before fitting.
Small milling table feed
A retrofitted knee-mill table axis on a 1540 mm rail keeps its N-grade straightness only if the bolt caps sit flush in the counterbores and the milled pocket corners are relieved past R0.5 mm.
Is the Airtac LSH Linear Guide Rail LSH20HN2X1540S20AN-M6 the Right Guide?
Plan the mating surface before the guide: relieve the corners beyond R0.5 mm, hold the shoulder, and budget the tightening torque for the frame material. If your surface cannot hold the allowances, a preloaded set is the wrong direction - preload B and C tighten the height tolerance to 85 um and 50 um respectively. For light compact duties ask about LRM, whose ratings we confirm on request; for moment-limited designs step up to LSH25 or a long carriage; for short travel with crossed-roller stiffness, LGC. Final check: form, size by load and moment, carriage style and length, block count, rail length, accuracy and preload, grease fitting, pairing code for spares.
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 LSH20HN2X1540S20AN-M6 FAQ
Machine the rail seat flat, leave a 5 mm shoulder (H2) beside the screws, and keep the corner radius at or below 0.5 mm. Fix with M5 screws at 882 / 588 / 441 N.cm on steel, cast iron or aluminium, ensure the rail is pulled flat against the datum face, then drive the bolt caps into the holes - lay a flat plate over each cap and tap vertically with a plastic mallet - until they sit below the rail top face. At 500 mm spacing keep parallelism P within 25 um and height S within 130 um.
Two square standard-length carriages on a 1540 mm rail, N accuracy, no preload. Per carriage: C 18.6 kN, C0 28.6 kN, MR 0.27 / MP 0.25 / My 0.25 kN.m, running parallelism 12-37 um for grade N, grease charge 1.8 cm3 with 0.6 cm3 top-ups every 100 km or 3 to 6 months. The two blocks share the load and resist tipping along the 1540 mm travel.
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 LSH20HN2X1540S20AN-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.