
The AirTAC Airtac LSH Linear Guide Rail LSH20HL1X210S15AN-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.
Order LSH20HL1X210S15AN-M6 and you receive a finished size 20 guide assembly: a 210 mm profile rail with one long square block riding on it, no further parts needed. The LSH range runs four recirculating ball rows at a 45 degree contact angle in crossed arc grooves, so downward, side and lift-off loads are all carried alike, and small errors in the mounting face are taken up inside the block rather than causing it to bind. Rail width on this size is 20 mm.
Lubrication is where a long carriage differs from its shorter sibling: the first charge is 2.7 cm3 per block, top-up 0.9 cm3, and the 100 km re-grease interval arrives sooner than it sounds - a 210 mm stroke reversing once per second covers that distance in roughly three days of continuous running. Set the reminder by distance travelled, not by the calendar. Ratings stand at C 22.2 kN dynamic and C0 37.6 kN static per carriage.
| Model | Airtac LSH Linear Guide Rail LSH20HL1X210S15AN-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 | Long carriage |
| Carriages supplied | 1 |
| Rail length | 210 mm |
| Basic dynamic load rating C | 22.2 kN per carriage |
|---|---|
| Basic static load rating C0 | 37.6 kN per carriage |
| Allowable static moment | MR 0.35 / MP 0.34 / My 0.34 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.
| LSH | LSH Series Linear Guide. |
|---|---|
| 20 | Size code. |
| H / F1 / F2 / F3 | Carriage style: square, or flange mounted from the top, bottom, or both. |
| L | Long carriage. |
| 1X210 | 1 carriage on a 210 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. |
| This order | Complete guide set |
|---|---|
| Rail | Yes, 210 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.
An autosampler moving vials between tray and injection valve: the 210 mm travel spans a two-row tray and the lubricant stays sealed inside the block, away from the samples.
A pressure-sensitive label head advancing and retracting over moving cartons: preload-free mounting latitude lets the frame be machined to normal workshop tolerances.
A bed-of-nails fixture raising circuit boards into a pogo-pin nest: the long carriage carries the overhung nest through its 0.35 kN.m moment rating without needing a second block.
Work the checklist before you buy. Form first: this is a complete assembly, but the same rail is also listed alone under RLX codes and the block alone under BK codes, matched by a shared pairing letter. Size on load and moment together - 22.2 kN and 0.35 kN.m MR per long block here. If the duty is modest and space is scarce, LRM steps down a class, though its ratings are unpublished and we confirm them case by case. If the travel is short and you want roller stiffness rather than recirculating-ball travel, cross to LGC. If MR still binds, a second carriage on the 210 mm rail cures tipping along the axis, or move to LSH25 N for 0.44 kN.m. Then fix accuracy N, preload A for the widest mounting tolerance, and the M6 fitting that suits sizes 20 to 35.
Quick checklist
Here it is in one place: C 22.2 kN and C0 37.6 kN dynamic and static per carriage; MR 0.35, MP 0.34 and My 0.34 kN.m; N-grade running parallelism spanning 12-37 um across the rail length bands; M5 mounting screws torqued to 882 N.cm on steel, 588 on cast iron, 441 on aluminium; grease charge 2.7 cm3 new and 0.9 cm3 per top-up, re-applied at every 100 km of travel or every 3 to 6 months.
Preload A leaves the ball circuit with working clearance, which costs a little rigidity but buys installation latitude: at 500 mm between rails the guide accepts 25 um of parallelism error and 130 um of height error, tightening only in proportion as your actual spacing narrows. A medium-preload C version of this assembly would demand 18 um and 50 um instead, roughly 2.6 times tighter on height, so the machining budget should decide the preload grade, not the other way round.
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Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.