Airtac LSH Linear Guide Rail LSH25BK-F1N-H-B-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25BK-F1N-H-B-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
- AccuracyH — high 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-H-B-M6
The code LSH25BK-F1N-H-B-M6 specifies one carriage and nothing else - a standard-length, top-flange block at high (H) accuracy with pairing letter B, the LSH25 rail to be ordered separately. The standard body keeps the footprint short, which matters on beds where stroke is fixed and every millimetre of block length eats usable travel. Four rows of balls run at 45 degree contact in X-arranged arc raceways, two points per ball, giving the block the same load rating in every direction and enough self-alignment to absorb slight machining error in its seat - within the catalogue limits, not beyond them. The mating rail is 23 mm wide; the 25 in the size code is not the width.
Ratings for the standard block: 26.9 kN dynamic, 39.4 kN static, allowable moments 0.44 / 0.38 / 0.38 kN.m (MR/MP/My). Static sits roughly 1.5 times above dynamic, the safety floor for shock, vibration and clamped dwell positions. High grade holds the running parallelism band to 7-28 um; if your build needs tighter, the same block exists in P grade with a 3-21 um band, one code letter away.
Airtac LSH Linear Guide Rail LSH25BK-F1N-H-B-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25BK-F1N-H-B-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 | H — high 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-H-B-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. |
| H | H — high 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-H-B-M6 Is Used
CNC router tooling-plate slide
Replacing the block under a CNC router's tooling-plate slide: the standard body preserves the original stroke, since a long block would shorten usable travel by its own extra length.
Lab automation dispenser head
A reagent dispensing head on a laboratory automation deck mounts to the F1 flange from above, and the H grade's 7-28 um parallelism band keeps repeat position tight enough for well-plate targeting.
Pusher gate on a filling line
A pusher gate on a bottling filling line takes a shock every cycle; the 39.4 kN static rating leaves about 1.5 times the dynamic rating in reserve for the clunk at end of stroke.
Is the Airtac LSH Linear Guide Rail LSH25BK-F1N-H-B-M6 the Right Guide?
Pick the standard body when stroke is at a premium and the moment stays inside 0.44 kN.m MR. If a cantilevered load exceeds that, the long block (0.58 kN.m) or one size up to LSH30 (0.66 kN.m) is the next step - the long block costs nothing but length, the size change means a new rail. Light, short-stroke duties may suit the smaller LRM series, whose load ratings are not published, so we confirm them against your duty; short travels needing crossed-roller rigidity point to LGC instead. Checklist: form - carriage only, rail not included; size judged on load and moment; F1 flange, standard length; accuracy H; grease fitting M6; pairing letter B matched to the rail code.
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-H-B-M6 FAQ
Per carriage: dynamic C 26.9 kN, static C0 39.4 kN, allowable static moments MR 0.44, MP 0.38, My 0.38 kN.m. High grade parallelism band 7-28 um. Mating rail screws: M6, torque 1370 / 921 / 686 N.cm on steel, cast iron and aluminium. Grease first charge 3.6 cm3, top-up 1.1 cm3, interval every 100 km of travel or 3-6 months, Mobilux EP2 or equivalent.
No - it is the carriage only, and no rail is in the box. To pair it, the LSH25 rail you order (an LSH25RLX code) must carry the same pairing letter B. Any LSH carriage of a given model fits any rail of that model and keeps its running character, so a letter-matched replacement drops straight on; preload and accuracy belong to the matched pair, not to a position in this carriage code.
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-H-B-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.