Airtac LSH Linear Guide Rail LSH25HN1X400S20AN-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25HN1X400S20AN-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
- Carriages1
- Rail length400 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 LSH25HN1X400S20AN-M6
LSH25HN1X400S20AN-M6 is the workhorse build of the size 25 family: one 23 mm wide profile rail (the code says 25, the steel says 23 - set out the mounting holes from the true width) at 400 mm long, with one square, standard-length block at normal accuracy and no preload. The four-row, 45 degree X-raceway ball circuit equalises radial, reversed-radial and lateral capacity, and its self-alignment takes up small machining errors on the seat.
Each block carries 26.9 kN dynamic and 39.4 kN static, with 0.44 kN.m of roll moment and 0.38 kN.m pitch and yaw. Normal grade allows 12-37 um of running parallelism - ample for pushers, gates and general machine furniture - and grease lubrication keeps the block running at travel speeds up to 60 m/min wherever no cooling effect is needed.
Airtac LSH Linear Guide Rail LSH25HN1X400S20AN-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25HN1X400S20AN-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 | Square (compact) |
| Carriage length | Standard carriage |
| Carriages supplied | 1 |
| Rail length | 400 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 LSH25HN1X400S20AN-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. |
| 1X400 | 1 carriage on a 400 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, 400 mm |
| Carriage | Yes, 1 |
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 LSH25HN1X400S20AN-M6 Is Used
Carton indexing pusher
A 400 mm stroke kicks cartons between conveyor lanes; 26.9 kN dynamic per block easily covers the pusher arm's inertia loads and the 0.44 kN.m moment rating absorbs the offset push.
Benchtop router gantry
A hobby-scale CNC Y-axis on a 400 mm rail: the square block bolts straight to the gantry plate and the no-preload option forgives a hand-machined base.
Label applicator traverse
Carrying an apply head across a filling line and cycling short strokes all shift long; the 100 km grease mark and the M6 side port make servicing a two-minute job.
Is the Airtac LSH Linear Guide Rail LSH25HN1X400S20AN-M6 the Right Guide?
Size this guide from the moment arm first. One block gives MR 0.44 kN.m; a second block on the same 400 mm rail attacks tipping along the travel instead, while a move to LSH30 raises MR about 50 percent to 0.66 kN.m in one part. Where the duty is light and space short, LRM is the smaller option, with load ratings unpublished and confirmed case by case; where travel is short and stiffness matters more than reach, LGC's crossed rollers are the alternative. Before ordering, work down the list: set versus part-only form; size by load AND moment; block style and length; count and rail length; accuracy and preload with the installation trade-off; grease fitting; pairing code if you are replacing one half of an existing pair.
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 LSH25HN1X400S20AN-M6 FAQ
Dynamic C 26.9 kN and static C0 39.4 kN per block; roll, pitch and yaw moments 0.44 / 0.38 / 0.38 kN.m; normal-grade parallelism 12-37 um across the length band. Mount on M6 screws at 1370 N.cm (steel), 921 (cast iron) or 686 (aluminium). The block ships with 3.6 cm3 of Mobilux EP2; top up 1.1 cm3 every 100 km of travel or every 3 to 6 months.
For pusher, conveyor and general machine duty, yes: preload A tolerates 30 um of parallelism error and 130 um of height difference per 500 mm of rail spacing, roughly double what medium preload would forgive (20 and 70 um). Reserve preload B or C for jobs where reversal must be crisp, such as servo positioning against a changing load direction, and tighten the base machining to match.
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 LSH25HN1X400S20AN-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.