Airtac LSH Linear Guide Rail LSH25HN2X460S20BN-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25HN2X460S20BN-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
- Carriages2
- Rail length460 mm
- AccuracyN — normal grade
- PreloadB — light 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 LSH25HN2X460S20BN-M6
This LSH25 set pairs a 460 mm, 23 mm wide rail with two standard-length square carriages, ordered as LSH25HN2X460S20BN-M6. The B in the code is light preload; accuracy is normal (N); the 20 after S sets the end-hole offset; M6 is the grease fitting on each block. Balls circulate through four raceways set at 45 degrees in an X pattern, which is why the guide takes radial, side and overturning loads alike and absorbs small alignment mistakes.
Lubrication is part of the deal: each carriage arrives filled with Mobilux EP2, takes 3.6 cm3 on a re-charge and 1.1 cm3 as a top-up, and needs fresh grease every 100 km of travel or every 3 to 6 months. A 300 mm stroke cycling once per second covers 100 km in roughly two weeks of continuous running, so high-duty machines hit the distance limit long before the calendar. Light preload adds rigidity for those cycles but cuts the allowable mounting height error to 85 um over 500 mm of rail spacing.
Airtac LSH Linear Guide Rail LSH25HN2X460S20BN-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25HN2X460S20BN-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 | 2 |
| Rail length | 460 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 | B — light 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 LSH25HN2X460S20BN-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. |
| 2X460 | 2 carriages on a 460 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| B | B — light 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, 460 mm |
| Carriage | Yes, 2 |
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 LSH25HN2X460S20BN-M6 Is Used
Sealing jaw slide on a packaging machine
Horizontal flow-wrapper jaws closing on a 460 mm traverse. Light preload takes each jaw closure with less play, and 1.1 cm3 top-ups keep the grease film intact through high daily cycle counts.
Large-format 3D printer gantry
The X or Y bridge of a metre-class FDM printer. Two blocks share the extruder mass, and light preload removes the slop that would show up as layer shifting without needing precision-grade rails.
Milling machine table retrofit
Replacing a worn dovetail slide on a small mill with a profile rail. The 0.44 kN.m moment rating per block absorbs the cutter's overturning pull, and the retrofit must hold the 85 um height tolerance that preload B demands.
Is the Airtac LSH Linear Guide Rail LSH25HN2X460S20BN-M6 the Right Guide?
Cycle-heavy machines should check the servicing side first: at 1.1 cm3 per top-up and an interval of 100 km or 3 to 6 months, grease access matters as much as the rating table. On capacity, the 26.9 kN C per carriage covers most medium axes; if the 0.44 kN.m MR binds on a cantilever, the long carriage (MR 0.58 kN.m) or a step to LSH30 (0.66 kN.m) is the fix, while light compact duties may suit LRM - unpublished ratings, confirmed by us - and short-travel high-stiffness stages belong on LGC crossed rollers. Confirm before ordering: form (set, carriage only, rail only), size by load and moment together, carriage style and length, block count and rail length, accuracy and preload with their installation cost, grease fitting, and the pairing code for part 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 LSH25HN2X460S20BN-M6 FAQ
Per carriage: C 26.9 kN, C0 39.4 kN, and moment ratings of MR 0.44, MP 0.38, My 0.38 kN.m. The N accuracy grade runs 12-37 um of running parallelism over the rail length bands. Rail screws are M6 with 1370 / 921 / 686 N.cm torque in steel / cast iron / aluminium. Grease is Mobilux EP2 or equivalent: 3.6 cm3 on a full re-charge, 1.1 cm3 as a top-up, repeated every 100 km or every 3 to 6 months.
B removes internal ball play, so the carriage moves with less deflection under reversing loads - useful on jaw, gantry and retrofit duties like the ones above. The price is a tighter datum: at 500 mm spacing the allowable height error drops from 130 to 85 um and the parallelism error from 30 to 22 um, scaled to your real span. If your bed cannot hold that, choose preload A.
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 LSH25HN2X460S20BN-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.