Airtac LSH Linear Guide Rail LSH20HN2X640S20AN-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20HN2X640S20AN-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 length640 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 LSH20HN2X640S20AN-M6
LSH20HN2X640S20AN-M6 is a complete AirTAC LSH guide set: one 640 mm profile rail, size 20 with a true rail width of 20 mm, carrying two standard-length square carriages that ship pre-filled with Mobilux EP2 and accept M6 grease nipples. Four rows of balls run in X-shaped arc raceways cut at 45 degrees, so the carriage carries equal load up, down and sideways, and slight mounting-surface error is taken up inside the carriage rather than forcing the guide to bind.
Each standard carriage is rated C 18.6 kN dynamic and C0 28.6 kN static, with moments of 0.27 / 0.25 / 0.25 kN.m in the MR/MP/My directions; the pair on one rail doubles the useful capacity and steadies the load against tipping along the travel. C0 sits about 1.5 times above C across this range, but size the guide on C: the dynamic rating governs travel life, while C0 matters for shock and static overload. At 640 mm, this rail sits far below the 4040 mm Lmax for size 20.
Airtac LSH Linear Guide Rail LSH20HN2X640S20AN-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20HN2X640S20AN-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 | 640 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 LSH20HN2X640S20AN-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. |
| 2X640 | 2 carriages on a 640 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, 640 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 LSH20HN2X640S20AN-M6 Is Used
Carton push-off station
A pusher arm knocking cartons off a packaging conveyor relies on the static rating, 28.6 kN per carriage, to shrug off repeated impact at the end of each stroke.
Motorised sample stage in a QC lab
A 640 mm traversing bed under an inspection microscope; normal accuracy suits sample handling, and preload A tolerates a simply machined base plate.
Profile-rail conversion on a fabricator
Retrofitting a 3D printer or small router from round shafting to a 640 mm size 20 set stiffens the gantry and doubles capacity by running two blocks.
Is the Airtac LSH Linear Guide Rail LSH20HN2X640S20AN-M6 the Right Guide?
Work the decision in three directions. If the duty is light and space tight, step down to LRM - the envelope is smaller, though AirTAC publishes no load ratings for it and we will confirm figures for your duty. If a cantilevered or overhung load governs, step up: one size to LSH25 raises MR from 0.27 to 0.44 kN.m, roughly 63 percent for one part, while the long LSH20L carriage raises it about 30 percent - and a second carriage on the rail, as fitted here, answers tipping along the travel instead. If the stroke is short and you need crossed-roller stiffness, LGC suits better than a recirculating guide. Before ordering, tick off: form (this is a full set), size 20 against load AND moment, square standard carriages, two of them on 640 mm of rail, accuracy N, preload A, M6 fitting.
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 LSH20HN2X640S20AN-M6 FAQ
Per standard carriage: dynamic C 18.6 kN, static C0 28.6 kN, moments MR 0.27 / MP 0.25 / My 0.25 kN.m. Running-parallelism bands: N 12-37 um, H 7-28 um, P 3-21 um. Fix the rail with M5 screws at 882 / 588 / 441 N.cm in steel, cast iron and aluminium respectively. Lubricate with 1.8 cm3 at first charge and 0.6 cm3 top-ups, re-greased every 100 km of travel or every 3 to 6 months.
The complete assembly: a 640 mm size 20 rail (true width 20 mm), two standard square carriages mounted on it, M6 grease nipples, and bolt caps for the rail screw holes - drive these caps fully home or swarf reaches the ball circuit. Preload is code A (none) and accuracy grade is N. Because any LSH20 carriage fits any LSH20 rail of the model with its smoothness intact, a worn carriage can later be replaced on its own, typically at around a quarter of the price of a full set.
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 LSH20HN2X640S20AN-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.