Airtac LSH Linear Guide Rail LSH25BK-F2L-P-E-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25BK-F2L-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 lengthLong 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-F2L-P-E-M6
One long, bottom-mounted carriage and nothing else: LSH25BK-F2L-P-E-M6 supplies the size 25 F2 block at P accuracy with an E pairing code and an M6 lubrication port. The rail is not part of this order. Four rows of balls bear on opposed 45 degree raceways in an X layout, which equalises capacity in all four directions and lets the block take up slight datum errors rather than jamming. Size 25 rides a 23 mm rail, so a mounting drawing taken from the size code alone will come out 2 mm wide of the mark.
P grade is the tightest accuracy LSH offers: running parallelism stays within a 3-21 um band depending on rail length. That precision only survives installation if the mating bench is right - the corner radius at the rail shoulders must not exceed 1 mm on size 25, and the rail has to be pulled flat against its datum and correctly torqued before smoothness is judged. With the long body, allowable moments stand at 0.58 / 0.57 / 0.57 kN.m, static capacity at 53.0 kN against a 32.9 kN dynamic rating.
Airtac LSH Linear Guide Rail LSH25BK-F2L-P-E-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25BK-F2L-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, bottom mounting |
| Carriage length | Long carriage |
| Basic dynamic load rating C | 32.9 kN per carriage |
|---|---|
| Basic static load rating C0 | 53.0 kN per carriage |
| Allowable static moment | MR 0.58 / MP 0.57 / My 0.57 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-F2L-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. |
| L | Long 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-F2L-P-E-M6 Is Used
Lab motion stage refurbishment
An optical test bench rebuild keeps its repeatability by renewing only the E-pair carriage, preserving the 3-21 um P-grade parallelism of the existing rail.
Metrology gauge line
A gauge comparator's measuring slide runs on this long bottom-flange body, whose 53.0 kN static rating resists brinelling from clamped fixturing.
Laser cutter head guide service
Replacing a scored beam carriage on a small laser cutter restores smooth P-grade travel on the 23 mm rail without re-lapping the bed.
Is the Airtac LSH Linear Guide Rail LSH25BK-F2L-P-E-M6 the Right Guide?
This E-coded block suits measuring machines, optical stages and other builds where the 3-21 um P-grade band is the reason for choosing LSH. If the stage is small and lightly loaded, LRM may shrink the envelope further - ask us to confirm its unpublished ratings first. If the run is short and rigidity per millimetre matters, LGC crossed rollers are worth comparing; if loads grow past 0.58 kN.m of moment, step up to LSH30. Order checklist: carriage-only form, size from load and moment together, F2 bottom flange, long length, accuracy P, M6 fitting, pairing code E shared with the rail. Also verify that the side M6 port clears neighbouring hardware once the block is on the machine.
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-F2L-P-E-M6 FAQ
Long LSH25 carriage, per block: dynamic rating 32.9 kN, static 53.0 kN, moments 0.58 (MR), 0.57 (MP) and 0.57 (My) kN.m. P accuracy gives a 3-21 um running parallelism band. Grease charge 4.5 cm3, top-up 1.4 cm3, interval 100 km of travel or 3-6 months, delivered through the M6 fitting. Rail clamp screws are M6 at up to 1370 N.cm in steel, 921 in cast iron, 686 in aluminium.
No rail ships with this item - it is carriage only. E is the pairing code that ties the block to an LSH25 rail of the same code; together with P grade it fixes the accuracy and preload behaviour you get. To keep the 3-21 um band after fitting, bolt the rail flat to its datum and respect the 1 mm maximum shoulder radius for this size.
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-F2L-P-E-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.