Airtac LSH Linear Guide Rail LSH25BK-F2N-P-C-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25BK-F2N-P-C-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
- AccuracyP — precision 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-F2N-P-C-M6
This listing is the carriage only: one AirTAC LSH25 bottom-flange block, F2 style, standard length, precision accuracy grade, M6 grease nipple, matched to pair code C. No rail is included in the box. The LSH carriage runs four rows of recirculating balls in X-shaped 45 degree arc raceways, two contact points per ball, so capacity is equal up, down and sideways and slight mounting-surface error is absorbed inside the block instead of causing binding. Note the true rail width for LSH25 is 23 mm, not 25 - lay out the mating surface from that figure.
Per carriage the catalogue rates this standard-length size 25 block at 26.9 kN dynamic (C) and 39.4 kN static (C0), with moment ratings of 0.44 / 0.38 / 0.38 kN.m for MR / MP / My. The F2 flange bolts from below, so the carriage top face stays clear for the moving part of your machine. AirTAC LSH carriages are interchangeable within the same model: this block will run on any LSH25 rail of pair code C and keep its running character.
Airtac LSH Linear Guide Rail LSH25BK-F2N-P-C-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25BK-F2N-P-C-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 | Flange, bottom mounting |
| 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 | P — precision 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-F2N-P-C-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. |
| P | P — precision 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-F2N-P-C-M6 Is Used
Metrology stage retrofit
A precision grade block bolted from below suits the sliding axis of a small coordinate measuring fixture, where the F2 mounting keeps the stage top surface uninterrupted.
Optical bench translation
Precision accuracy and a 26.9 kN dynamic rating fit a lens-testing carriage that traverses an optical bench in a laboratory, replaced without disturbing the fixed 23 mm rail bed.
Panel inspection gantry
A camera head riding over glass panels gains self-aligned, four-direction-equal guidance from this pair code C block on an existing LSH25 rail.
Is the Airtac LSH Linear Guide Rail LSH25BK-F2N-P-C-M6 the Right Guide?
Start with the form: this is carriage only, so it suits a rebuild or a spare where the LSH25 rail (23 mm wide, pair code C) is already sound. For duty, the standard size 25 carriage carries 26.9 kN dynamic; step down to the LRM series when the load is light and the envelope tight - note LRM load ratings are not published, so we confirm them for you. Step up to LSH30 (MR 0.66 kN.m) or to a long block when the moment governs, and step across to LGC crossed-roller guides for short travel that needs higher rigidity. Checklist before ordering: form (carriage), size by load AND moment, carriage style and length (F2, standard here), count and rail length, accuracy grade P and the preload you will run - preload tightens allowable mounting error, on LSH25 from 130 um height error at no preload to 70 um at medium - grease fitting M6, and the pairing code, which must match the rail.
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-F2N-P-C-M6 FAQ
Per carriage: basic dynamic load rating C 26.9 kN, basic static C0 39.4 kN, allowable static moments MR 0.44, MP 0.38, My 0.38 kN.m. Running parallelism for the P accuracy grade falls in a 3 to 21 um band depending on rail length. The mating rail uses M6 screws torqued to 1370 / 921 / 686 N.cm on steel / cast iron / aluminium. Grease: 3.6 cm3 first charge, 1.1 cm3 top-up, re-grease every 100 km of travel or every 3 to 6 months; the block ships pre-filled with Mobilux EP2.
No rail is included - this SKU is the carriage only. AirTAC cuts LSH rails and machines carriages to matching pair codes, and the code on this block (C) must match the code on your rail for correct ball fit and running accuracy. If you are replacing a worn block, read the code off the original carriage or rail end; if you cannot find it, send us the model details and we will identify it.
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 LSH25BK-F2N-P-C-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.