Airtac LSH Linear Guide Rail LSH25BK-F1L-H-E-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25BK-F1L-H-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
- 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-F1L-H-E-M6
This is a single AirTAC LSH25 carriage block - top flange for bolting down through the flange plate, long body, high accuracy grade, M6 grease fitting - sold without any rail. The M6 point belongs to the fitting family used across sizes 20 to 35, which keeps spare lubrication hardware common if your machine mixes LSH20 to LSH35 guides on one line. Four rows of balls circulate in X-arranged 45 degree arc raceways so the block carries load equally in all four directions and self-aligns over small mounting-surface errors. The rail it pairs with, code E, is 23 mm wide even though the size code reads 25.
Service intervals are where this block is won or lost. First charge is 4.5 cm3 of Mobilux EP2 in the long body, with a 1.4 cm3 top-up quantity, and the re-grease trigger is every 100 km of travel or every 3 to 6 months - whichever comes first. That distance arrives faster than it sounds: a 300 mm stroke cycling once per second covers 100 km in under four days of continuous running, so on fast machines the calendar never binds. Capacity figures for this block: 32.9 kN dynamic, 53.0 kN static, moments MR 0.58 kN.m and MP, My 0.57 kN.m.
Airtac LSH Linear Guide Rail LSH25BK-F1L-H-E-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25BK-F1L-H-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, top 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 | 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-F1L-H-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. |
| 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-F1L-H-E-M6 Is Used
Automated screwdriving Z-axis
A screwdriving spindle hung from a Z-slide over an assembly line applies a constant overturning load to its carriage; this long F1 block's 0.58 kN.m MR rating holds the spindle square to the fastener through the whole stroke.
Conveyor guide-rail changeover actuator
Actuators that reposition conveyor guide rails between product sizes make short, frequent strokes all shift long; holding a code E spare of this type turns a worn-guide stoppage into a ten-minute block swap.
Print-line web tension idler
An idler arm carried on a linear guide sees fluctuating web tension all day; re-pairing this block with the machine's existing LSH25 rail restores smooth tension response without disturbing the rail datum or the frame alignment.
Is the Airtac LSH Linear Guide Rail LSH25BK-F1L-H-E-M6 the Right Guide?
Think of this SKU as a spares-line item: buy it when the rails on your machine are code E LSH25 and the blocks are the consumable element. Size it the same way as a new build - compare both the 32.9 kN dynamic rating and the 0.58 kN.m MR against your load and lever arm. For light duties in tight envelopes, the LRM series steps down, but its load ratings are not published, so we confirm them with you rather than quote a guess. For short-travel work needing crossed-roller stiffness, LGC is the sensible cross-check. If moment margin is thin even with the long body, step to LSH30 or run two carriages on the rail to share the tipping.
Checklist before you order: carriage-only form, size verified against load AND moment, F1 flange style in the long body, accuracy grade H, M6 fitting, and the pairing letter E - rails and carriages must share it, so copy it off the original part if this is a replacement.
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-F1L-H-E-M6 FAQ
Per carriage: dynamic rating C 32.9 kN, static rating C0 53.0 kN, moment ratings MR 0.58, MP 0.57, My 0.57 kN.m. Grade H running parallelism: 7 to 28 um across the rail length bands. Mating rail screws: M6, torqued 1370 N.cm (steel), 921 N.cm (cast iron), 686 N.cm (aluminium). Lubrication: 4.5 cm3 Mobilux EP2 first charge, 1.4 cm3 top-up, re-grease at 100 km of travel or 3 to 6 months, whichever comes sooner.
The box contains one F1 long-body carriage with an M6 fitting and nothing else - no rail, no end stops, no preload declaration, since preload is only specified on complete-set codes. Every LSH25 rail and carriage carries a pairing letter; this block is E, so it will only run correctly on a rail also marked E. If you are replacing a worn block, the letter on the old carriage or rail end is the single most important thing to check before ordering.
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Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
Request a Quote for Airtac LSH Linear Guide Rail LSH25BK-F1L-H-E-M6
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