Airtac LSH Linear Guide Rail LSH25BK-HN-N-E-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25BK-HN-N-E-M6 is a standard-type profile linear guide on a 23 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
- SizeLSH25
- Rail width23 mm
- Carriage lengthStandard carriage
- AccuracyN — normal 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 LSH25BK-HN-N-E-M6
This listing supplies one AirTAC LSH25 square carriage only - standard length, normal grade, M6 fitting, pairing code E. The rail is not part of the package. The block carries four rows of recirculating balls on X-configured 45 degree arc raceways, giving the same load rating vertically and laterally plus built-in self-alignment that soaks up small mounting-surface errors. Its rail partner in size 25 is 23 mm wide; lay out any new mounting pad from the datasheet, not from the code.
Figures per carriage: 26.9 kN basic dynamic, 39.4 kN basic static, moments 0.44 kN.m MR, 0.38 kN.m MP and 0.38 kN.m My. Any LSH25 carriage mounts on any LSH25 rail of the same model and keeps its smoothness, preload and accuracy, so a correct-code replacement restores the original motion without re-shimming the machine.
Airtac LSH Linear Guide Rail LSH25BK-HN-N-E-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25BK-HN-N-E-M6 |
|---|---|
| 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 | LSH25 |
| Rail width | 23 mm (the size code is not the rail width above size 20) |
| Carriage style | Square (compact) |
| Carriage length | Standard carriage |
| Basic dynamic load rating C | 26.9 kN per carriage |
|---|---|
| Basic static load rating C0 | 39.4 kN per carriage |
| Allowable static moment | MR 0.44 / MP 0.38 / My 0.38 kN·m |
| Accuracy grade | N — normal grade |
| Mounting screws | M6 — 1370 N·cm into steel, 921 cast iron, 686 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 LSH25BK-HN-N-E-M6
| LSH | LSH Series Linear Guide. |
|---|---|
| 25 | Size code — note the rail is 23 mm wide, not 25 mm. |
| 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. |
| N | N — normal 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 LSH25BK-HN-N-E-M6 Is Used
SMT feeder slide overhaul
Component feeder slides on an electronics assembly machine are serviced module by module; a worn LSH25 block on the feeder carriage is replaced while the machine keeps its original rails and geometry.
Case erector guide blocks
The flap-folding head on a case erector travels on LSH25 rails and takes constant side loads; keeping a code-E square carriage as the machine's own spare keeps packaging throughput safe.
Ball-screw saddle re-fit
On a ball-screw driven positioning saddle, the two LSH25 carriages carry the moment from the screw offset; renewing both blocks together removes the rattle that shows up as backlash at the tool.
Is the Airtac LSH Linear Guide Rail LSH25BK-HN-N-E-M6 the Right Guide?
Because any LSH25 carriage fits any LSH25 rail of the same model and keeps its running character, this block is a true drop-in - provided the letter E on it matches the letter on your rail. Check the rail is sound first: if the raceway on the rail itself is pitted, a new carriage will not rescue it. On sizing, 26.9 kN dynamic and 0.44 kN.m MR cover a lot of mid-size machine duty, but measure the moment arm on any overhung mass before trusting the load figure alone. Lighter, tighter builds point down to AirTAC LRM (ratings unpublished - ask us); heavier cantilevers point up to a long LSH25 block at 0.58 kN.m MR or LSH30 at 0.66 kN.m; short stiff strokes point across to LGC.
Final checks before ordering: form (one carriage, rail not supplied), size against load and moment, square body in standard length, block count and rail length, accuracy and preload grade with the installation tolerance they demand, grease fitting (M6, correct for the size 20 to 35 band), and pairing code E. One fitting note: a tube fitting on the carriage side can sit flush with or above the top face, so clear it against your machine plate before mounting.
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 LSH25BK-HN-N-E-M6 FAQ
Yes. Dynamic C 26.9 kN; static C0 39.4 kN; static moment ratings MR 0.44, MP 0.38, My 0.38 kN.m; normal grade running parallelism 12-37 um across the rail length bands. Fixing: M6 rail screws torqued to 1370 N.cm (steel), 921 N.cm (cast iron), 686 N.cm (aluminium); adjacent shoulder corner radius at most 1 mm. Grease: Mobilux EP2 pre-fill, 3.6 cm3 first charge, 1.1 cm3 per top-up, interval 100 km of travel or 3 to 6 months, whichever comes first - at a 300 mm stroke cycling once a second, that distance clocks up in about two weeks of continuous running.
It is not. You are buying the carriage only; the rail, its end caps and the mounting screws are separate line items. Every LSH25 rail and carriage carries a pairing letter - this one is E - and the two parts must share it. If you are replacing a worn block, copy the letter from the old carriage or from the rail; if you are building new, buy a complete LSH25 set instead and the matching is done for you.
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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 LSH25BK-HN-N-E-M6
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