Airtac LSH Linear Guide Rail LSH25BK-F1N-P-C-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25BK-F1N-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-F1N-P-C-M6
This AirTAC LSH25BK-F1N-P-C-M6 is the carriage only: a single top-flange (F1) block, standard length, size 25, with pairing code C - and no rail of any kind is supplied. The flange plate sits on top of the carriage, so the mounting bolts drop down through it, which keeps the load platform flush with the flange face. Inside the block, four rows of recirculating balls run in X-arranged arc raceways at a 45 degree contact angle, two contact points per ball, giving equal capacity in all four load directions and enough self-alignment to absorb slight mounting-surface error. Note the true rail width: the size 25 code pairs with a rail 23 mm wide, not 25 mm.
Per carriage the catalogue lists 26.9 kN basic dynamic load (C) and 39.4 kN basic static (C0), with allowable static moments of 0.44 kN.m MR, 0.38 kN.m MP and 0.38 kN.m My. Static capacity runs about 1.47 times dynamic on this size, so size travel life on C and reserve C0 for shock loads and dwelt positions. The accuracy grade is precision (P); order a P-grade LSH25 rail cut to your length and sharing pairing code C.
Airtac LSH Linear Guide Rail LSH25BK-F1N-P-C-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25BK-F1N-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, 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-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-F1N-P-C-M6 Is Used
Inspection camera slide
A retrofit for the vision camera axis on a measuring station: the P-grade block keeps runout low over the rail while the top flange takes the camera bracket bolts straight down.
Cartesian pick-and-place rebuild
Swap a seized block on a small pick-and-place gantry. 26.9 kN dynamic per carriage comfortably covers a light Z assembly, and one spare carriage brings the axis back without replacing the rail.
Weldment fixture slide
A positioning slide on a welding fixture that sees dwelt loads and tack-spatter shock benefits from the 39.4 kN static margin and the flush top flange for clamping the fixture plate.
Is the Airtac LSH Linear Guide Rail LSH25BK-F1N-P-C-M6 the Right Guide?
Read the pairing code off your existing rail first - it must read C or this block will not match, since LSH rails and carriages are only interchangeable within the same model and code. If the duty turns out to be light and the envelope tight, step down to AirTAC LRM instead; its load ratings are not published, so we confirm them by enquiry before you commit. Where travel is short and you need crossed-roller rigidity rather than long recirculating runs, LGC is the better cross-step. Otherwise stay on LSH and size on both load and moment: a second carriage on the same rail fights tipping along the travel more cheaply than jumping a size. Checklist before you order: form (carriage only), size by load and moment, carriage style and length, carriage count and rail length, accuracy grade, grease fitting (M6 is the size 25 family), and pairing code C.
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-C-M6 FAQ
Per carriage: basic dynamic load C 26.9 kN, basic static C0 39.4 kN, allowable static moments MR 0.44 kN.m, MP 0.38 kN.m, My 0.38 kN.m. The P grade runs with rails showing 3 to 21 um running parallelism across the rail length bands. Rail mounting screws are M6, torqued to 1370 N.cm in steel, 921 N.cm in cast iron and 686 N.cm in aluminium. Grease first charge is 3.6 cm3 per standard carriage with 1.1 cm3 top-ups, refreshed every 100 km of travel or every 3 to 6 months using Mobilux EP2 or an equivalent.
No rail is included - this is a carriage-only code, so what arrives is one F1 top-flange block and nothing else. AirTAC marks carriage-only and rail-only SKUs with a pairing letter; the block and the rail must share the same letter, and here that letter is C. Any LSH25 carriage fitted to an LSH25 rail of the same model keeps its smoothness, preload and accuracy, so reading the code off the original part is all you need to complete the match.
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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-F1N-P-C-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.