Airtac LSH Linear Guide Rail LSH25HN1X220S20AN-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25HN1X220S20AN-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 length220 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 LSH25HN1X220S20AN-M6
LSH25HN1X220S20AN-M6 is the straight-through version of the size 25 guide: one square H carriage, standard length, on a 220 mm rail, delivered as a single assembled set and greased at the factory. The geometry is four ball rows in X-arranged 45 degree raceways, two contact points per ball, giving the same rating for downward, upward and side loads and letting the carriage swallow small errors in the mounting face. The rail itself is 23 mm wide; do not machine the pocket to 25 mm.
Everything about this code is the base specification - normal accuracy, no preload, standard carriage - and the numbers are why size 25 is a workhorse: C 26.9 kN and C0 39.4 kN per carriage, moments MR 0.44 / MP 0.38 / My 0.38 kN.m. The 220 mm rail sits far under the 4040 mm Lmax for this size. One upgrade worth knowing: if the load tips along the direction of travel, a second carriage on the same rail addresses that better than any single-part change.
Airtac LSH Linear Guide Rail LSH25HN1X220S20AN-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25HN1X220S20AN-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 | 220 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 LSH25HN1X220S20AN-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. |
| 1X220 | 1 carriage on a 220 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, 220 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 LSH25HN1X220S20AN-M6 Is Used
Bench-mill X-axis conversion
Converting a hobby mill to linear guides, one carriage per 220 mm rail carries the saddle; the 39.4 kN static rating covers the clamping shock a cutter imposes when it digs in at the start of a pass.
Small press tooling slide
A locating slide under a light press sees peak loads, not speed. Static capacity C0 of 39.4 kN and 0.44 kN.m of moment capacity let the die carrier sit overhung without permanent deformation at working loads.
Machine-guard access door
A heavy polycarbonate guard needs to slide one-handed hundreds of times a day. Preload A keeps the pull force low, and equal four-direction capacity means the door's weight and an operator's sideways pull both stay within rating.
Is the Airtac LSH Linear Guide Rail LSH25HN1X220S20AN-M6 the Right Guide?
Start here when you want the easiest-to-live-with version of size 25 and are not chasing stiffness or premium straightness. If the duty is light and space is short, LRM steps down; its load ratings are not published, so we check them for you before ordering. If cantilevered moment rules the sizing, jump to the long L carriage (MR 0.44 to 0.58 kN.m) or up one size - and note the true rail width changes with it. Where travel is short and crossed-roller rigidity matters more than long recirculating travel, LGC is the alternative.
Before you buy, confirm: complete set form, size chosen on load AND moment together, square standard carriage, count and rail length, accuracy and preload against what your base can hold (no preload here means P 30 um and S 130 um at 500 mm), M6-family grease fitting, and the pairing code from the original part if this is a like-for-like 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 LSH25HN1X220S20AN-M6 FAQ
Dynamic C 26.9 kN; static C0 39.4 kN; allowable moments MR 0.44, MP 0.38 and My 0.38 kN.m. N-grade running parallelism runs 12 to 37 um across the rail-length bands. Fix the rail with M6 screws at 1370 N.cm (steel), 921 (cast iron) or 686 (aluminium). Grease is Mobilux EP2 or equivalent: 3.6 cm3 first charge, 1.1 cm3 top-ups, interval 100 km of travel or 3 to 6 months, whichever comes first.
Three practical rules: hold mounting errors inside P 30 um and S 130 um over a 500 mm span - the self-aligning property absorbs only slight error, within those limits; keep the shoulder corner radius at 1 mm or under; and seat the supplied bolt caps flush in the rail holes, tapped down with a plastic mallet through a flat plate, so swarf stays out of the ball circuit. For spares, carriages are interchangeable on LSH rails of the same model: order the carriage alone using the pairing code from your original, and it keeps its smoothness and accuracy.
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1-Year Warranty
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 LSH25HN1X220S20AN-M6
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