Airtac LSH Linear Guide Rail LSH25F1N4X880S20AN-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25F1N4X880S20AN-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 asComplete guide set
- SizeLSH25
- Rail width23 mm
- Carriage lengthStandard carriage
- Carriages4
- Rail length880 mm
- AccuracyN — normal grade
- PreloadA — no preload
- 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 LSH25F1N4X880S20AN-M6
LSH25F1N4X880S20AN-M6 is a complete size 25 AirTAC LSH guide: an 880 mm rail - actually 23 mm wide, not 25 - under four standard-length F1 top-flange carriages, each fitted with an M6 nipple and supplied with its bolt caps. Within each block, four rows of balls circulate through X-arranged 45 degree arc raceways at a 45 degree contact angle, giving identical capacity in all four radial directions and enough self-alignment to forgive slight flatness errors in the mating surface - within the allowable values for the size, not without limit.
Preload A makes this the forgiving configuration: at 500 mm rail spacing the size tolerates 30 um of parallelism error and 130 um of height error, scaled to the shorter 880 mm span. Per carriage the catalogue lists 26.9 kN dynamic C, 39.4 kN static C0 and 0.44 / 0.38 / 0.38 kN.m MR / MP / My. Four blocks packed under a metre of rail keep deflection and tipping low, which is the usual reason a machine designer specifies a multi-block short axis rather than one bigger carriage.
Airtac LSH Linear Guide Rail LSH25F1N4X880S20AN-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25F1N4X880S20AN-M6 |
|---|---|
| Series | LSH Series Linear Guide |
| Supplied as | Complete guide set |
| 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 |
| Carriages supplied | 4 |
| Rail length | 880 mm |
| 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 |
| Preload grade | A — no preload |
| 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 |
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.
Model Code: Airtac LSH Linear Guide Rail LSH25F1N4X880S20AN-M6
| LSH | LSH Series Linear Guide. |
|---|---|
| 25 | Size code — note the rail is 23 mm wide, not 25 mm. |
| H / F1 / F2 / F3 | Carriage style: square, or flange mounted from the top, bottom, or both. |
| N | Standard carriage. |
| 4X880 | 4 carriages on a 880 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| A | A — no preload — higher preload raises rigidity and tightens how flat the mounting surface must be. |
| N | N — normal grade. |
| -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 | Complete guide set |
|---|---|
| Rail | Yes, 880 mm |
| Carriage | Yes, 4 |
Rail and carriage(s) supplied together, matched as a set. 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 LSH25F1N4X880S20AN-M6 Is Used
Benchtop mill CNC conversion
A job-shop mill converted to CNC gains a stiff short X-axis from four blocks on 880 mm of rail; the flange holes bolt to a prepared plate, provided the 5 mm H2 shoulder and corner radii under 1 mm are machined in.
Press bolster die-change slide
A servo press bolster that indexes between die positions rides four carriages to carry the off-centre die weight; preload A keeps breakaway friction low for final hand positioning.
Robot cell safety scanner gate
A guarding gate sweeping a laser scanner across a robot cell doorway uses the short four-block axis for a repeatable, wobble-free sweep, with 39.4 kN static per block easily carrying the scanner column.
Is the Airtac LSH Linear Guide Rail LSH25F1N4X880S20AN-M6 the Right Guide?
Let installation quality drive the choice. If the base can be bored, milled and shimmed to close tolerance, the same set ordered with preload C gains rigidity but the allowable height error drops from 130 um to 70 um - rigidity is paid for in mounting precision. If moment governs, a long carriage (MR 0.58 kN.m) or one size up to LSH30 (MR 0.66 kN.m) both beat stacking more blocks. Light compact duties can drop to LRM - load ratings unpublished, so we confirm them for you - and short-travel, high-stiffness stages fit LGC's crossed rollers. Order checklist: complete set; size 25 sized by load and moment; F1 flange; standard length; four blocks; 880 mm rail; 20 mm end offset; N accuracy; preload A; M6 fitting; pairing code if matching to existing parts.
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 LSH25F1N4X880S20AN-M6 FAQ
One standard LSH25 carriage on this set is rated: dynamic load C 26.9 kN; static load C0 39.4 kN; static moments MR 0.44, MP 0.38, My 0.38 kN.m. Running parallelism for grade N sits in the 12-37 um band. Rail fixing uses M6 screws at 1370 N.cm into steel, 921 N.cm into cast iron or 686 N.cm into aluminium, with the mating shoulder at H 6.5 mm and corner radii kept at or below 1 mm. Grease: 3.6 cm3 Mobilux EP2 in each block at first charge, 1.1 cm3 top-ups every 100 km of travel or every 3-6 months, whichever comes first.
Preload A means no internal preloading of the ball rows, so the guide runs with the least friction and tolerates the widest mounting errors: 30 um parallelism and 130 um height at 500 mm rail spacing, pro-rated to the 880 mm length. Ask for preload B or C only if you need extra rigidity - medium preload C pulls the height allowance down to 70 um, nearly twice as demanding, and light B to 85 um. The box holds the 880 mm rail, four F1 carriages with M6 nipples and the bolt caps; that is the whole set. Should you later need parts only, rails and carriages are matched by the pairing code printed on them, so record it from this set before installation.
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1-Year Warranty
Covers non-human-caused product damage.
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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 LSH25F1N4X880S20AN-M6
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