Airtac LSH Linear Guide Rail LSH15BK-HN-H-D-M4
The AirTAC Airtac LSH Linear Guide Rail LSH15BK-HN-H-D-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 asCarriage / block only
- SizeLSH15
- Rail width15 mm
- Carriage lengthStandard carriage
- AccuracyH — high grade
- 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 LSH15BK-HN-H-D-M4
One LSH15 square carriage, high accuracy grade, standard length, M4 grease fitting, pairing code D - and reading that last segment correctly is the whole point of this part. Blocks and rails in the LSH range are matched by pairing letter, so before ordering, take the letter off your existing rail or old block; a D-coded carriage belongs on a D-coded rail. There is no rail in this SKU. Four recirculating ball rows engage crossed 45 degree arc raceways at two points per ball, so loads from any of the four directions rate the same and slight datum errors are taken up inside the block. The mating rail is 15 mm wide.
The catalogue rates this carriage at 11.3 kN dynamic C, 17.9 kN static C0 and 0.12 kN.m on each moment axis (MR, MP, My). High accuracy holds running parallelism to the 7-28 um band, but the self-aligning property absorbs only slight mounting error: on LSH15, allowable height error between rails at 500 mm spacing is 130 um with no preload and falls to 35 um at medium preload, so a stiffer set demands a flatter, better-aligned mounting surface. Check your mounting shoulder corner radius too - 0.5 mm maximum for this size.
Airtac LSH Linear Guide Rail LSH15BK-HN-H-D-M4 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH15BK-HN-H-D-M4 |
|---|---|
| Series | LSH Series Linear Guide |
| Supplied as | Carriage / block only |
| 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 |
| 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 |
| 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, matched by the pairing code |
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. This item is a carriage only. Order a complete set if you also need a rail.
Model Code: Airtac LSH Linear Guide Rail LSH15BK-HN-H-D-M4
| LSH | LSH Series Linear Guide. |
|---|---|
| 15 | Size code. |
| BK | Carriage / block only — no rail supplied. |
| H / F1 / F2 / F3 | Carriage style: square, or flange mounted from the top, bottom, or both. |
| N | Standard carriage. |
| H | H — high grade. |
| Pairing code | Rails and carriages must share a pairing code. Take it from the original part when replacing. |
| -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 | Carriage / block only |
|---|---|
| Rail | No — not supplied with this item |
| Carriage | Yes, one |
This is a carriage on its own. NO RAIL IS INCLUDED. 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 LSH15BK-HN-H-D-M4 Is Used
Laboratory XY positioning stage
A two-axis lab stage rebuilt with H-grade carriages; the D-coded blocks are matched one-for-one with the D-coded rails already fitted.
Wire cut-and-strip feed slide
The wire feed carriage on a cut-and-strip machine sees dust and insulation scraps - replacing the block (and reseating the rail's bolt caps) restores smooth feed without touching the rail.
Modular fixture base upgrade
A clamping fixture slide on a machining bench, where the square H carriage carries vertical clamp load; static capacity of 17.9 kN gives about 1.6 times the dynamic rating as headroom.
Is the Airtac LSH Linear Guide Rail LSH15BK-HN-H-D-M4 the Right Guide?
Start with the form: carriage only, no rail, pairing code D. Then size by load and moment together - 11.3 kN and 0.12 kN.m serve light axes; where moment governs, LSH20 more than doubles MR to 0.27 kN.m, and a second carriage on one rail counters tipping along the travel instead of side load. Step down to LRM for lighter duties in a tighter envelope (its ratings are unpublished and we confirm them), or across to LGC where travel is short and crossed-roller rigidity is the priority. Final checklist: form, size by load and moment, square carriage, standard length, accuracy H, grease fitting M4, and the D pairing letter read off your existing rail or original set code.
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 LSH15BK-HN-H-D-M4 FAQ
Per carriage: dynamic C 11.3 kN, static C0 17.9 kN, moments MR 0.12 kN.m, MP 0.12 kN.m and My 0.12 kN.m. Accuracy grade H: running parallelism 7-28 um across the rail length bands. Mounting: M4 rail screws torqued to 412 N.cm (steel), 274 N.cm (cast iron) or 206 N.cm (aluminium); mounting shoulder corner radius maximum 0.5 mm. Lubrication: 0.9 cm3 Mobilux EP2 at first fill, 0.3 cm3 top-ups, every 100 km of travel or every 3 to 6 months, whichever comes first.
No. The code LSH15BK means carriage only - no rail is supplied. The D at the end of the code is the pairing letter that ties carriages to rails: an LSH15 carriage coded D matches an LSH15 rail coded D, while other letters are ordered as different SKUs. Read the letter from the old part or the original complete-set code before you order, because carriages coded B, C or E are separate products.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
Request a Quote for Airtac LSH Linear Guide Rail LSH15BK-HN-H-D-M4
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