Airtac LSH Linear Guide Rail LSH20HN1X1280S10AH-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20HN1X1280S10AH-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 length1280 mm
- AccuracyH — high 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 LSH20HN1X1280S10AH-M6
This code describes a long, accurate single-axis guide: a 1280 mm LSH20 rail with the first fixing hole 10 mm from each end, carrying one standard-length square carriage with an M6 grease fitting, at preload A (no preload) and accuracy grade H. Grade H tightens running parallelism to a 7-28 um band, roughly half the deviation of grade N on the same rail, which is what a long axis needs because small angular errors compound over metres of travel. Four rows of recirculating balls at 45 degree contact give the block equal rating in every load direction and let it self-align over slight baseplate faults. Size 20 is a true 20 mm rail width.
Ratings are per carriage: 18.6 kN dynamic, 28.6 kN static, with moments of 0.27 / 0.25 / 0.25 kN.m (MR / MP / My). The 1280 mm length sits well inside the 4040 mm maximum for this size, leaving 2760 mm of headroom if a future machine needs the same axis longer, and it is one continuous rail, not a spliced pair, so the carriage crosses no joint. Because preload is A, the allowable height error over a 500 mm reference span is 130 um; at grade H the parallelism of the finished axis is dominated by your rail seat, so bolt the rail flat and torque the M5 screws evenly.
Airtac LSH Linear Guide Rail LSH20HN1X1280S10AH-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20HN1X1280S10AH-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 | 1280 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 | H — high 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 LSH20HN1X1280S10AH-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. |
| 1X1280 | 1 carriage on a 1280 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. |
| H | H — high 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, 1280 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 LSH20HN1X1280S10AH-M6 Is Used
Signboard router Y-axis
The long axis of a CNC router cutting aluminium composite sign panels: 1280 mm of travel in one rail, with grade H parallelism keeping the cut line true end to end.
Laser cutter feed with drag chain
A cutting-head carriage on a sheet-metal laser cutter, where the 10 mm end offset leaves room for the cable carrier anchor and the M6 fitting supports re-greasing every 100 km.
Straightness measuring bench
A probe trolley on a straightness or flatness measuring rig: the 7-28 um H-grade band is tighter than the 12-37 um N band, so the rail contributes less error than the workpiece being checked.
Is the Airtac LSH Linear Guide Rail LSH20HN1X1280S10AH-M6 the Right Guide?
At 1280 mm the straightness of the mounting seat decides the accuracy you actually get, so this SKU suits a machined or ground beam rather than a rough welded frame - if the frame is rough, save money with grade N and re-machine instead. If the axis must carry a cantilevered head at the far end of travel, moment governs: a long LSH20 carriage or a second block on the same rail addresses tipping better than preload alone. Lighter, smaller axes should drop to LRM (we confirm its unpublished ratings), and short-stroke high-stiffness duties should look at LGC crossed-roller guides instead.
Order checklist: form (complete set), size chosen on both load and moment, square or flange carriage, standard or long, one block versus two, the 1280 mm rail with S10 end offset, grade H accuracy measured against preload A's 130 um height allowance, M6 grease fitting, and the pairing code if extending an existing machine.
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 LSH20HN1X1280S10AH-M6 FAQ
One standard-length size 20 carriage is rated C 18.6 kN dynamic and C0 28.6 kN static, with allowable moments MR 0.27, MP 0.25 and My 0.25 kN.m. Grade H running parallelism spans 7-28 um by rail length band. Rail fixing is M5 screws at 882 / 588 / 441 N.cm for steel, cast iron and aluminium respectively. Grease: 1.8 cm3 first charge and 0.6 cm3 per top-up of Mobilux EP2 or equivalent, refreshed every 100 km of travel or every 3-6 months. On this axis a 1 m stroke covers 2 m per cycle, so 100 km needs about 50000 round trips and the calendar can bind before the distance does.
You get the complete set: one 1280 mm LSH20 rail at grade H with a 10 mm end-hole offset, one square standard-length carriage seated on it, an M6 grease fitting, and plastic bolt caps for the rail screw holes - seat each cap flush in its counterbore, lay a flat plate over it and tap vertically with a plastic mallet, because an open hole lets swarf into the ball circuit. No second carriage, no mounting screws and no baseplate are included. The carriage and rail share the model's pairing, so any LSH20 carriage fits this rail later and keeps its accuracy and preload class; note that side grease nipples are not recommended if you ever switch to a flange-type block, because the fitting can foul the carriage.
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 LSH20HN1X1280S10AH-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.