Airtac LSH Linear Guide Rail LSH20HN1X400S20AN-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20HN1X400S20AN-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 length400 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 LSH20HN1X400S20AN-M6
One AirTAC LSH20 square carriage, standard length, is supplied here already seated on a 400 mm rail cut with a 20 mm end-hole offset. The order code ends N for normal accuracy and A for no preload, with an M6 nipple on the carriage; size 20 means a genuine 20 mm rail width. Four ball rows contact X-arranged arc raceways at 45 degrees, two points per ball, which equalises capacity in every direction and lets the carriage self-align to slight mounting error instead of fighting it.
Normal accuracy keeps running parallelism within a 12-37 um band over the rail length, the usual choice for general machine building. Ratings per standard-length carriage: 18.6 kN dynamic against 28.6 kN static, close to a 1.5 to 1 static-to-dynamic ratio that leaves headroom for shock loads and dwell under load. Moment limits are 0.27 / 0.25 / 0.25 kN.m for MR / MP / My. Light or medium preload can be ordered later if vibration appears, at the price of a tighter mounting tolerance.
Airtac LSH Linear Guide Rail LSH20HN1X400S20AN-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20HN1X400S20AN-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 | 400 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 LSH20HN1X400S20AN-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. |
| 1X400 | 1 carriage on a 400 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, 400 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 LSH20HN1X400S20AN-M6 Is Used
Benchtop CNC router Y-rail
A benchtop CNC router cutting MDF panels runs well on normal accuracy: the 12-37 um parallelism band is far tighter than the finish the cutter leaves anyway.
Confectionery carton pusher
A carton pusher on a chocolate packing line strokes a few hundred millimetres per cycle; the no-preload carriage tolerates the welded-frame tolerances typical of food machinery.
Adhesive dispensing head slide
An adhesive dispensing head traversing a fixture plate gains from the 1.5-to-1 static margin, because the head presses down at every dwell position between moves.
Is the Airtac LSH Linear Guide Rail LSH20HN1X400S20AN-M6 the Right Guide?
Balance cost against rigidity when picking accuracy and preload. This normal grade, no-preload set is the most forgiving configuration to build against: 130 um height error and 25 um parallelism error allowed at 500 mm rail spacing. For light duty in a small envelope, LRM may be enough, though its ratings are unpublished and we verify them for you first. Where moment rules the choice, the long LSH20 carriage raises MR to 0.35 kN.m and LSH25 reaches 0.44 kN.m; for short-stroke work needing roller stiffness, consider LGC. Checklist: form, size by load and moment, carriage style and length, count, rail length, accuracy and preload with the installation trade-off, grease fitting, and the pairing code for 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 LSH20HN1X400S20AN-M6 FAQ
Dynamic rating 18.6 kN, static 28.6 kN, moments MR 0.27 / MP 0.25 / My 0.25 kN.m. Normal accuracy running parallelism spans 12-37 um depending on rail length. Fix the rail with M5 screws torqued to 882, 588 or 441 N.cm on steel, cast iron or aluminium respectively. Grease is Mobilux EP2: 1.8 cm3 first fill, 0.6 cm3 top-up, renewed at 100 km of travel or every 3 to 6 months, whichever comes first.
It is a complete set: one square LSH20 carriage pre-fitted on a 400 mm rail, so nothing else is needed to make a working slide. If you later want a spare carriage, order an LSH20BK carriage-only code and quote the pairing letter from this order; a carriage and a rail must share the pairing code to match.
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 LSH20HN1X400S20AN-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.