Airtac LSH Linear Guide Rail LSH20HN1X220S20AH-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20HN1X220S20AH-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 length220 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 LSH20HN1X220S20AH-M6
LSH20HN1X220S20AH-M6 is a complete AirTAC LSH linear guide assembly: a single square (H) carriage of standard length on a 220 mm profile rail ground to 20 mm width, supplied as one matched unit. Four ball rows run in X-arranged 45 degree arc grooves with two contact points per ball, so the carriage carries load up, down and sideways with equal capacity and absorbs slight mounting-surface error internally instead of jamming. This unit is high accuracy (H), no preload (A), with an M6 grease fitting.
Catalogue ratings per size 20 standard carriage: 18.6 kN basic dynamic load C, 28.6 kN basic static C0, and moment caps of 0.27 / 0.25 / 0.25 kN.m for MR / MP / My. The static figure sits about 1.5 times above the dynamic one across this range - a reminder that C, not the larger C0, governs travel life. On the installation side, grade H holds running parallelism to 7-28 um over this rail length, and because the carriage is not preloaded the guide still accepts up to 130 um of height error across a 500 mm span, the loosest mounting window this size offers.
Airtac LSH Linear Guide Rail LSH20HN1X220S20AH-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20HN1X220S20AH-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 | 220 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 LSH20HN1X220S20AH-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. |
| 1X220 | 1 carriage on a 220 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, 220 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 LSH20HN1X220S20AH-M6 Is Used
Camera inspection gantry
A machine-vision camera riding above a moving part table on one LSH20 set: the 0.25 kN.m My rating handles the tipping from an offset camera head, and H grade keeps the optical axis steady.
Compact CNC router build
Bench-top router builders pair this 220 mm set with a ball-screw axis; M5 rail screws at 882 N.cm on steel give a rigid base, and the no-preload A grade tolerates a hand-milled mounting plate.
Automated test fixture slide
A probe plate indexing over a PCB in a functional test rig; the square carriage self-aligns on a mildly uneven fixture bed, and the M6 point allows re-greasing without disassembly.
Is the Airtac LSH Linear Guide Rail LSH20HN1X220S20AH-M6 the Right Guide?
Size by load and moment together, not by one number. If the duty is light and the envelope tight, LRM is the smaller family, but its load ratings are not published, so ask us to confirm them against your duty cycle first. If the moment governs - a cantilevered head, an off-centre load - moving up to LSH25 N lifts MR from 0.27 to 0.44 kN.m, about 63 percent for one part, or switch this block to the long L version for roughly 30 percent more moment capacity. Where travel is short and you need crossed-roller rigidity rather than long recirculating travel, LGC is the better fit. Before ordering, check: form (this is a complete set), size by load and moment, square H carriage, standard length, one block, 220 mm rail, H accuracy, no preload, M6 fitting. High accuracy with no preload is a friendly combination for a first-time mount; rigidity later comes from preload B or C, and each step up costs latitude - medium preload on size 20 drops the allowable height error from 130 to 50 um.
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 LSH20HN1X220S20AH-M6 FAQ
Per LSH20 standard carriage: dynamic C 18.6 kN, static C0 28.6 kN, allowable moments MR 0.27, MP 0.25, My 0.25 kN.m. H grade running parallelism on this rail is 7-28 um. Mount with M5 screws at 882 N.cm on steel, 588 on cast iron, 441 on aluminium. Grease with Mobilux EP2: 1.8 cm3 first charge, 0.6 cm3 top-ups, repeated every 100 km of travel or every 3 to 6 months, whichever comes first.
Preload raises rigidity but shrinks the mounting error the guide can absorb. At 500 mm rail spacing, size 20 with no preload (this SKU, grade A) tolerates 130 um height error and 25 um parallelism; light preload B cuts that to 85 and 20 um; medium C to 50 and 18 um. If your mounting surfaces are hand-finished, stay with A and accept slightly more deflection under reversing loads.
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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 LSH20HN1X220S20AH-M6
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