Airtac LSH Linear Guide Rail LSH20HN2X1840S20AN-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20HN2X1840S20AN-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 length1840 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 LSH20HN2X1840S20AN-M6
This complete set, LSH20HN2X1840S20AN-M6, pairs a 1840 mm LSH20 profile rail with two standard-length square carriages at normal accuracy, no preload, M6 grease fittings, and mounting holes set 20 mm in from each rail end. Inside every carriage, balls recirculate through four raceways cut at 45 degrees in opposite senses, each ball touching at two points - equal rated capacity downward, upward and sideways, plus built-in tolerance for slight mounting-surface error. The size 20 rail measures 20 mm across its width.
Static margin is worth attention on shock-prone machines: C0 is 28.6 kN per carriage, roughly 1.5 times the 18.6 kN dynamic rating, a ratio that holds across the LSH range - so brief impact or holding loads are judged on C0 while travel life is judged on C. Moment ratings are MR 0.27, MP 0.25, My 0.25 kN.m per carriage. At 1840 mm the rail still sits about 2200 mm short of the 4040 mm maximum length for size 20, which means the design has room to grow into a longer stroke.
Airtac LSH Linear Guide Rail LSH20HN2X1840S20AN-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20HN2X1840S20AN-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 | 1840 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 LSH20HN2X1840S20AN-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. |
| 2X1840 | 2 carriages on a 1840 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, 1840 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 LSH20HN2X1840S20AN-M6 Is Used
Parcel diverter on an e-commerce sorter
A high-cycle diverter arm steering parcels between chute lines. The static margin of 28.6 kN C0 per carriage absorbs the impact of packages arriving off-tempo, while the two-carriage layout stops the long diverter beam skewing.
Drag-chain endurance test bench
A rig cycling a cable carrier back and forth to measure bending life. Preload A keeps the moving carriage running free over 1840 mm of travel at moderate speed, and the 100 km grease interval doubles as a natural test checkpoint.
Laser marking bridge over extrusions
A marking head traversing above aluminium extrusion stock on a fabrication line. The 1840 mm span covers long profiles in one pass, two carriages resist pitch under the head weight, and M6 fittings sit clear of the beam optics.
Is the Airtac LSH Linear Guide Rail LSH20HN2X1840S20AN-M6 the Right Guide?
Run the checklist: set form (rail plus two carriages), size 20 chosen on load and moment together, square standard-length carriages, block count 2, rail 1840 mm, accuracy N, preload A, M6 fitting. With no preload the set tolerates height error up to 130 um and parallelism 25 um at 500 mm spacing - forgiving on welded or milled fabrications, traded against some rigidity under vibration. When moment decides the size, compare the long LSH20 carriage (MR 0.35 kN.m) or a step up to LSH25 N (MR 0.44 kN.m). Light compact duties can move down to LRM, whose unpublished ratings we confirm by RFQ; short-travel stages that need crossed-roller stiffness move across to LGC. If you later replace a single part, order by the pairing code marked on the original so fit and rating are preserved.
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 LSH20HN2X1840S20AN-M6 FAQ
Per standard-length carriage: dynamic load rating C 18.6 kN, static C0 28.6 kN, allowable moments MR 0.27 / MP 0.25 / My 0.25 kN.m. Normal accuracy runs at 12-37 um parallelism depending on rail length. Mounting: M5 screws, 882 N.cm on steel, 588 on cast iron, 441 on aluminium. Lubrication: 1.8 cm3 first charge and 0.6 cm3 top-up per carriage, re-greased every 100 km of travel or every 3 to 6 months.
Yes: one 1840 mm rail with two square carriages already mounted, plus the plastic bolt caps for the mounting holes. Drive the caps fully into the counterbores with a flat plate and plastic mallet, or swarf will reach the ball circuit; the cap must not stand proud of the rail top. You supply the M5 screws. The carriages arrive pre-filled with Mobilux EP2. Complete sets carry no pairing code, but any spare carriage or rail ordered later must match this model and its pairing code to keep the rated fit.
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 LSH20HN2X1840S20AN-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.