Airtac LSH Linear Guide Rail LSH25BK-F1N-P-E-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25BK-F1N-P-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
- 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-F1N-P-E-M6
The LSH25BK-F1N-P-E-M6 is one F1 top-flange carriage, standard length, in size 25 with pairing code E, listed as a single block with no rail attached. Carriages of one LSH model are interchangeable: this block will run on any LSH25 rail of the model and retain its smoothness, preload and accuracy, which is what makes part-only buying practical. Four rows of balls circulate through X-shaped arc raceways contacting at 45 degrees, two points per ball, so thrust from above, below or sideways is carried evenly and small mounting errors are soaked up rather than turned into binding. The rail width is 23 mm even though the size code says 25.
Figures per carriage: 26.9 kN basic dynamic, 39.4 kN basic static, moments 0.44 kN.m MR / 0.38 kN.m MP / 0.38 kN.m My, precision (P) grade. The 100 km re-grease interval is shorter than it sounds: a 300 mm stroke cycling once per second covers 100 km in roughly two weeks of continuous running, so on a fast axis the distance limit arrives well before the 3 to 6 month calendar limit.
Airtac LSH Linear Guide Rail LSH25BK-F1N-P-E-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25BK-F1N-P-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 | Flange, top 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-F1N-P-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. |
| 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-F1N-P-E-M6 Is Used
Optical bench translator
Replacing the carrier under a lens holder on an optical bench translator: the P grade suits an application where repeatability matters more than raw speed.
Filling-head support slide
A filling head that traverses across bottle necks rides on a short LSH25 rail; a fresh carriage restores smooth indexing without touching the rail itself.
DIY CNC router X-axis
Makers upgrading a hobby CNC router X-axis can bolt this top-flange carriage under the gantry plate, with 0.44 kN.m MR handling the tipping from an off-centre spindle.
Is the Airtac LSH Linear Guide Rail LSH25BK-F1N-P-E-M6 the Right Guide?
Economics first: a carriage runs at roughly a quarter of the price of a complete set, so if the rail is undamaged and true, replacing the block is usually the repair that makes sense. Confirm the pairing letter on your rail reads E before you order, because a mismatched code will not seat properly. For lighter duties in tighter envelopes, LRM is the step down - its load ratings are not published, so we confirm them for you - and for short strokes needing crossed-roller rigidity, LGC is the step across. Sizing on LSH itself: judge load and moment together, since moment usually calls the size on cantilevered tools. Checklist: form (carriage only), size, carriage style and length, count and rail length, accuracy grade, grease fitting (M6 belongs to size 25), and pairing code E.
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-F1N-P-E-M6 FAQ
Per carriage: basic dynamic load 26.9 kN (C), basic static 39.4 kN (C0), static moment limits MR 0.44 kN.m, MP 0.38 kN.m, My 0.38 kN.m, precision (P) accuracy paired with rails at 3 to 21 um running parallelism by length band. Rail screws: M6, 1370 N.cm steel, 921 N.cm cast iron, 686 N.cm aluminium. Lubrication: Mobilux EP2 or equivalent, 3.6 cm3 first charge and 1.1 cm3 top-up, re-applied every 100 km of travel or 3 to 6 months, whichever comes first.
One carriage: the F1 top-flange, standard-length block, size 25, with pairing code E. No rail is supplied and nothing about this code describes a rail. If your rail carries a different pairing letter, this block is not its match - codes must agree between rail and carriage - so either read the letter off the original part or send us the full code and we will point you to the right one.
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-F1N-P-E-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.