Airtac LSH Linear Guide Rail LSH15HN1X300S20AH-M4
The AirTAC Airtac LSH Linear Guide Rail LSH15HN1X300S20AH-M4 is a standard-type profile linear guide on a 15 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
- SizeLSH15
- Rail width15 mm
- Carriage lengthStandard carriage
- Carriages1
- Rail length300 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 LSH15HN1X300S20AH-M4
LSH15HN1X300S20AH-M4 is the high-accuracy variant of the AirTAC LSH15 complete set: a 300 mm rail and a single square carriage of standard length, ordered and delivered as one unit. Size 15 corresponds to a genuine 15 mm rail width. Four rows of balls contact the raceways at 45 degrees in an X pattern with two points per ball, which is why the block carries equal capacity in every direction and self-aligns over slight datum errors within the stated tolerance.
The H grade holds running parallelism within 7-28 um across its length band, and at 300 mm this rail sits far below the 4040 mm maximum length for size 15, so no spliced joint is involved. Ratings per carriage: C 11.3 kN dynamic, C0 17.9 kN static, 0.12 kN.m on all three moment axes. One caution from the catalogue: the grade only survives if the rail is pulled flat onto its datum face and the M4 screws torqued correctly - achieved straightness is made or lost at the bolting stage.
Airtac LSH Linear Guide Rail LSH15HN1X300S20AH-M4 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH15HN1X300S20AH-M4 |
|---|---|
| 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 | LSH15 |
| Rail width | 15 mm |
| Carriage style | Square (compact) |
| Carriage length | Standard carriage |
| Carriages supplied | 1 |
| Rail length | 300 mm |
| Basic dynamic load rating C | 11.3 kN per carriage |
|---|---|
| Basic static load rating C0 | 17.9 kN per carriage |
| Allowable static moment | MR 0.12 / MP 0.12 / My 0.12 kN·m |
| Accuracy grade | H — high grade |
| Preload grade | A — no preload |
| Mounting screws | M4 — 412 N·cm into steel, 274 cast iron, 206 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 LSH15HN1X300S20AH-M4
| LSH | LSH Series Linear Guide. |
|---|---|
| 15 | Size code. |
| H / F1 / F2 / F3 | Carriage style: square, or flange mounted from the top, bottom, or both. |
| N | Standard carriage. |
| 1X300 | 1 carriage on a 300 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, 300 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 LSH15HN1X300S20AH-M4 Is Used
Tool presetter measuring slide
A tool presetter's measuring arm travels a short calibrated slide; the H grade band of 7-28 um running parallelism supports repeatable radius readings, and a flat, correctly torqued mounting face is what actually delivers it.
Retrofit for worn bushing slides
Replacing tired round-rail bushing blocks on an ageing engraving or cutting machine with a 300 mm profile guide: carriage-only replacements later cost roughly a quarter of a set, so the rail can remain in service through several block changes.
Small-parcel sorter trial rig
A fulfilment-lab prototype sorting light parcels on a 300 mm diverter stroke: C 11.3 kN per carriage dwarfs the payload, and the side grease port lets the rig run trial shifts without dismantling the carriage.
Is the Airtac LSH Linear Guide Rail LSH15HN1X300S20AH-M4 the Right Guide?
Confirm the form first: a complete set for a new axis, or a BK carriage / RLX rail code matched by pairing letter when repairing. Size on load and moment together - here C 11.3 kN and 0.12 kN.m per carriage - and let the moment decide when the load overhangs, since a longer carriage or the next size lifts moment capability quicker than it lifts C. When the duty is light and space scarce, LRM steps down (its ratings are unpublished - we confirm them for you); for short travel where crossed-roller rigidity beats long recirculating travel, LGC steps across.
Run through: form, size against load AND moment, carriage style and length, count and rail length, accuracy and preload against the flatness you can machine - H grade parallelism is wasted on an untorqued rail - an M4-family grease fitting, and the pairing code for spares. Worth knowing for later: a replacement carriage lists at roughly a quarter of a complete set, so the rail you fit today can stay in place when a block finally wears.
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 LSH15HN1X300S20AH-M4 FAQ
Per carriage: dynamic rating C 11.3 kN, static rating C0 17.9 kN, and static moment limits of 0.12 kN.m each for MR, MP and My. H grade running parallelism: 7-28 um depending on finished rail length. Fix with M4 screws torqued to 412 N.cm (steel), 274 N.cm (cast iron) or 206 N.cm (aluminium). Lubricate with Mobilux EP2 or equivalent: 0.9 cm3 first charge, 0.3 cm3 top-ups, at intervals of 100 km of travel or 3-6 months.
Preload is a complete-set option only, and it trades rigidity against mounting precision. Going from the no-preload specification of this SKU to medium preload C squeezes the allowable height error at 500 mm spacing from 130 um to 35 um - close to four times tighter - and the parallelism allowance from 25 um to 13 um. Light preload B sits between, at 85 um and 18 um. Keep this A-grade version if your base plate tolerance is uncertain; specify B or C only when you can hold the corresponding flatness.
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 LSH15HN1X300S20AH-M4
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.