Airtac LSH Linear Guide Rail LSH25BK-F1N-P-D-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25BK-F1N-P-D-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-D-M6
Here you are buying one AirTAC LSH25BK-F1N-P-D-M6 carriage: a top-flange, standard-length block for size 25 LSH rail with pairing code D, delivered as the block alone. Flange-type mounting means the fasteners pass vertically through the top plate, so the machine table bolts straight down onto the carriage and the working surface stays flush with the flange. The ball circuit uses four rows of recirculating balls on X-pattern arc raceways set at 45 degrees, two points of contact per ball, which evens out loads from every direction and lets the block ride out minor mounting misalignment. The rail beneath it is 23 mm wide despite the 25 in the size code.
Ratings per carriage: 26.9 kN dynamic (C), 39.4 kN static (C0) and moment limits of 0.44 kN.m MR, 0.38 kN.m MP, 0.38 kN.m My, at precision (P) accuracy. One caution belongs with this flange style: side-entry grease nipples are not recommended on F1, F2 or F3 carriages because the fitting can foul the body, so plan lubrication access from a clear face before you design the bracket around it.
Airtac LSH Linear Guide Rail LSH25BK-F1N-P-D-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25BK-F1N-P-D-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-D-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-D-M6 Is Used
Screw-dispensing head slide
A benchtop screwdriver feeder that dwells under preload at each station leans on the 39.4 kN static rating, while the P grade holds the head repeatable along the 23 mm rail.
Test-rack module carriage
Upgrading the sliding module on an electronics test rack: the F1 flange lets the module bolt down flush, and the top-flange footprint keeps the wiring loom clear of the ball circuit.
Packaging line change part
Spare carriage for the change-part slide on a carton former - keeping one block per pairing code on the spares shelf turns a line stop into a ten-minute swap.
Is the Airtac LSH Linear Guide Rail LSH25BK-F1N-P-D-M6 the Right Guide?
P accuracy earns its keep only if the rail under it is P grade too, and only if the mounting face is pulled flat against its datum and torqued correctly - a flange bolted onto an unprepared plate throws the grade away. Before ordering, confirm the form you need: this is carriage only, pairing D, with no rail in the box. If the duty is light and space is scarce, LRM steps down and covers it (we confirm its unpublished load ratings on request); if the stroke is short and you want crossed-roller stiffness over long recirculating travel, step across to LGC. Match list: form, size by load and moment together, carriage style and length, count and rail length, accuracy grade with its installation demands, grease fitting (M6 family suits size 25), and pairing code D.
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-D-M6 FAQ
Per carriage: dynamic rating C 26.9 kN; static rating C0 39.4 kN; allowable static moments MR 0.44 kN.m, MP 0.38 kN.m, My 0.38 kN.m. Accuracy is precision (P), which matches rails graded 3 to 21 um running parallelism by length band. Mounting screws for the rail are M6 at 1370/921/686 N.cm on steel/cast iron/aluminium. Lubrication is 3.6 cm3 first charge and 1.1 cm3 per top-up per standard carriage, repeated every 100 km of travel or every 3 to 6 months.
No. The code LSH25BK-F1N-P-D-M6 describes a carriage only - a single top-flange block with pairing code D. There is no rail, and because this is a part-only code there is no preload position in it; preload is selected when a complete set is ordered. Buy a P-grade LSH25 rail carrying pairing code D, and the two will match on width, ball geometry and grade.
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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-D-M6
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