Airtac LSH Linear Guide Rail LSH15HN1X340S20BH-M4
The AirTAC Airtac LSH Linear Guide Rail LSH15HN1X340S20BH-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 length340 mm
- AccuracyH — high grade
- PreloadB — light 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 LSH15HN1X340S20BH-M4
This LSH15HN1X340S20BH-M4 pairs a 340 mm, 15 mm wide profile rail with one square standard-length carriage - a complete set - and adds the two options many builds skip: light preload (code B) and high accuracy (code H). The carriage carries four rows of recirculating balls in X-arranged 45 degree arc raceways, two contact points per ball, which equalises capacity in all four load directions and lets the carriage absorb slight mounting error. End mounting holes are set back 20 mm from the rail ends, and the M4 grease fitting sits on the carriage.
Light preload removes the internal play, which raises rigidity but narrows what your mounting surfaces may be out by: at 500 mm rail spacing the allowable height error falls from 130 um on the unloaded fit to 85 um here, and the parallelism allowance from 25 to 18 um. Ratings stay 11.3 kN dynamic and 17.9 kN static per carriage with 0.12 kN.m per moment axis, and the H grade holds running parallelism to 7-28 um. Choose this set when an axis must not knock under reversing loads but the base plate is accurately machined.
Airtac LSH Linear Guide Rail LSH15HN1X340S20BH-M4 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH15HN1X340S20BH-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 | 340 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 | B — light 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 LSH15HN1X340S20BH-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. |
| 1X340 | 1 carriage on a 340 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| B | B — light 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, 340 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 LSH15HN1X340S20BH-M4 Is Used
PCB inspection conveyor guide
An inspection camera sled over a PCB conveyor reverses constantly; light preload removes the reversal knock so the image does not smear, and the H grade keeps tracking within 7-28 um.
Laser optics alignment carriage
Beam-folding optics need a slide with no play. Preload B stiffens the carriage, high accuracy holds the 340 mm path true, and 0.12 kN.m moments carry the mirror head's small offset weight.
Micro-dispensing stage axis
A glue-dot dispenser on a small stage benefits from a preloaded fit: no lost motion on direction change, and the 0.3 cm3 top-ups each 100 km keep maintenance interruptions rare.
Is the Airtac LSH Linear Guide Rail LSH15HN1X340S20BH-M4 the Right Guide?
Form check first: this is a complete set, both parts in one purchase. Replacing a worn block on a sound rail? The carriage-only LSH15BK route with the right pairing letter runs roughly a quarter of the set cost. On size: this code's 0.12 kN.m moment ceiling is the usual constraint on cantilevered tooling - an LSH20 block lifts that to 0.27 kN.m, and a long LSH15 carriage trades more envelope for more moment capacity. Lighter, smaller duty belongs on the LRM miniature series, whose ratings are unpublished, so we confirm them per enquiry; short strokes needing crossed-roller stiffness point to LGC. Order checklist: complete set or single part, size checked on load AND moment, carriage style and length, block count and rail length, accuracy grade, preload weighed against the mounting tolerance you can hold, grease fitting, and the pairing code for part orders.
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 LSH15HN1X340S20BH-M4 FAQ
Per square standard carriage: dynamic rating C 11.3 kN, static C0 17.9 kN, static moment limits MR 0.12, MP 0.12 and My 0.12 kN.m. H grade running parallelism 7-28 um across the band. Rail screws M4 at 412, 274 or 206 N.cm for steel, cast iron or aluminium beds. Lubrication: Mobilux EP2, 0.9 cm3 per carriage at first charge, 0.3 cm3 top-ups, re-grease at 100 km of travel or every 3 to 6 months.
B is the middle setting: play is removed for stiffer behaviour under reversing loads, yet more installation latitude survives than at medium preload - 18 um parallelism and 85 um height error allowed between rails at 500 mm spacing, against 13 and 35 um at C. Heavy preload D does not exist on size 15 at all; it starts at size 25, so B is the practical rigidity ceiling for a 15 mm guide. Confirm your base plate can be machined and torqued to hold those figures before ordering preload.
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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 LSH15HN1X340S20BH-M4
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.