Airtac LSH Linear Guide Rail LSH20HN1X280S20AN-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20HN1X280S20AN-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 length280 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 LSH20HN1X280S20AN-M6
LSH20HN1X280S20AN-M6 is a complete AirTAC LSH linear guide in size 20: one square standard-length carriage running on a 280 mm profile rail, with the ball circuit and the rail delivered as one matched item. Four rows of balls sit in X-arranged arc raceways cut at 45 degrees, contacting at two points per ball, so the block carries load and overturning moment equally from every direction. Small errors in the mounting surface are absorbed inside the carriage rather than showing up as binding. On this size the rail width really is 20 mm - the size code and the width only agree on LSH15 and LSH20.
Rated figures for the standard carriage: dynamic C 18.6 kN, static C0 28.6 kN, and moments of 0.27 / 0.25 / 0.25 kN.m (MR/MP/My). Note that C0 runs about 1.5 times above C across the range; for a moving axis it is the dynamic value that governs travel life, so plan around 18.6 kN. With preload code A the balls run free, giving the loosest installation latitude in the LSH20 range and an N-grade parallelism band of 12-37 um over the 280 mm rail.
Airtac LSH Linear Guide Rail LSH20HN1X280S20AN-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20HN1X280S20AN-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 | 280 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 LSH20HN1X280S20AN-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. |
| 1X280 | 1 carriage on a 280 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, 280 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 LSH20HN1X280S20AN-M6 Is Used
PCB depaneling router axis
A benchtop router separating printed circuit boards runs a light spindle along one rail. The 18.6 kN dynamic rating covers the cutting side loads with margin, and the free-running A preload keeps drag low on a hand-tuned axis.
Tray indexing pusher
On a packaging line that indexes food trays into a thermoformer, one square carriage carries the pusher finger. Equal four-direction capacity handles the vertical push and the lift-off reaction without a second rail.
Laboratory autosampler stage
An autosampler moving a sampling arm over a well-plate deck needs quiet, consistent travel under grams of load. The N grade band of 12-37 um parallelism is ample for repeatable pick positions, and the M6 fitting allows clean top-ups.
Is the Airtac LSH Linear Guide Rail LSH20HN1X280S20AN-M6 the Right Guide?
Start from the duty, not the code. If the load is light and the envelope tight, step down to AirTAC LRM - smaller and cheaper, but its load ratings are not published, so we confirm them against your cycle before you commit. If the load is cantilevered, the moment rating usually decides: a long LSH20 carriage raises MR from 0.27 to 0.35 kN.m (about 30 percent), while stepping up to LSH25 lifts it to 0.44 kN.m, roughly 63 percent, in one part. For short travel where crossed-roller rigidity matters more than long recirculating runs, LGC is the better fit. Checklist before ordering: form (set, carriage only, or rail only); size by load and moment together; carriage style and length; block count and rail length; accuracy and preload, remembering tighter preload means a tighter mounting spec; grease fitting; and the pairing code if you are buying a spare part to match an existing rail.
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 LSH20HN1X280S20AN-M6 FAQ
Standard-length square carriage: dynamic C 18.6 kN, static C0 28.6 kN, allowable moments MR 0.27, MP 0.25, My 0.25 kN.m. N-grade running parallelism: 12-37 um. Fix the rail with M5 screws torqued to 882 N.cm in steel, 588 N.cm in cast iron or 441 N.cm in aluminium, with mounting shoulders H 4.3 / H1 3.5 / H2 5 mm and a corner radius no larger than 0.5 mm. Each carriage is delivered with 1.8 cm3 of Mobilux EP2; top up 0.6 cm3 through the M6 fitting every 100 km of travel or every 3 to 6 months, whichever comes first.
Preload code A means the ball circuit is set free-running: lowest drag, easiest assembly, and the most forgiving mounting spec. On LSH20 the allowable height error at 500 mm rail spacing is 130 um with no preload, 85 um at light preload B and 50 um at medium preload C, with parallelism tightening from 25 to 20 to 18 um. In other words, medium preload demands nearly three times the flatness for the same span. Rigidity is not free - order C only if your machined base can hold those values, and note that heavy preload D does not exist below size 25.
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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 LSH20HN1X280S20AN-M6
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