Airtac LSH Linear Guide Rail LSH25BK-F2N-N-E-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25BK-F2N-N-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
- AccuracyN — normal 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-N-E-M6
This is the block half of a size 25 LSH guide: an AirTAC F2 bottom-flange carriage, standard length, normal accuracy, fitted with an M6 grease nipple, pairing code E. No rail is included and none is implied by the code. Four ball rows contact crossed 45 degree raceways at two points each, which is why the block carries the same rating whichever direction the load arrives from - and why a slightly mis-machined seat does not lock the slide.
The F2 foot pattern bolts upward from beneath, so nothing stands proud of the carriage top - useful where a worktable or bracket must sit flush against it. Ratings per carriage are 26.9 kN dynamic, 39.4 kN static, and 0.44 / 0.38 / 0.38 kN.m for MR / MP / My. One manufacturer caution applies here: side-mounted fittings on flange-type carriages can foul neighbouring parts, so check the clearance around the M6 nipple before final tightening.
Airtac LSH Linear Guide Rail LSH25BK-F2N-N-E-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25BK-F2N-N-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 | 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 | N — normal 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-N-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. |
| N | N — normal 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-N-E-M6 Is Used
Camera head retrofit on a plate cutter
Adding a vision head to a plate-cutting machine demands the sensor axis flush with the top plate; F2 bolting from below keeps that surface uninterrupted. Normal grade accuracy delivers the 12-37 um parallelism band the optics need at this scale.
CNC router Z-slide counterweight
The counterweighted Z-slide of a small CNC router stresses its guide through moment more than load. At 0.44 kN.m MR per block, this E-coded carriage carries the overhang; adding a second block on the same rail would share the tipping instead.
Warehouse shuttle cart maintenance
A fleet of warehouse shuttle carts runs size 25 guides around the clock. Holding E-coded carriages as planned line items lets the maintenance team swap a block in minutes and keep carts earning while worn parts are cleaned and inspected off the cart.
Is the Airtac LSH Linear Guide Rail LSH25BK-F2N-N-E-M6 the Right Guide?
Match the part to the job. This is a renewal or upgrade purchase, so begin with the pairing code on the existing rail - E here - because rail and carriage must share it. For a new build, complete-set codes let you specify rail length, preload and block count in one order instead. Light duty in a small envelope steps down to LRM, whose load ratings we confirm from the maker rather than quote. Moment-limited duty steps up: the long LSH25L carriage reaches 0.58 kN.m MR, or move to LSH30 for 0.66. Short strokes needing crossed-roller rigidity point to LGC instead. Checklist: carriage only, no rail; size 25 (23 mm rail width); F2 bottom flange; standard length; N accuracy; M6 nipple; 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-F2N-N-E-M6 FAQ
Per carriage: dynamic rating 26.9 kN, static rating 39.4 kN, allowable moments 0.44 kN.m MR, 0.38 kN.m MP, 0.38 kN.m My. Paired with a normal accuracy rail, running parallelism lands in the 12-37 um band, length dependent. The rail bolts down with M6 screws at 1370 N.cm into steel, 921 into cast iron, 686 into aluminium. The carriage leaves the factory charged with 3.6 cm3 of Mobilux EP2; top up 1.1 cm3 every 100 km of travel or every 3 to 6 months, then stroke the block three carriage-lengths, twice, and confirm an even film on the rail.
No rail. BK in the code marks carriage only, so budget the rail separately unless you already own a sound one. The trailing letter E is the pairing code: your replacement block and the existing rail must show the same letter for the pair to hold their rated smoothness and accuracy. The code itself carries no preload position and no rail length - those are specified on complete-set codes - so verify both from your original order paperwork if they matter to the rebuild.
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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-F2N-N-E-M6
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