Airtac LSH Linear Guide Rail LSH25HN1X1000S20BN-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25HN1X1000S20BN-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 length1000 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 LSH25HN1X1000S20BN-M6
Where a slide must not slop under reversing loads, this preloaded version earns its place. LSH25HN1X1000S20BN-M6 delivers a matched 1000 mm LSH25 rail with one standard-length square carriage, factory-fitted with light preload, normal accuracy and an M6 lubrication fitting. The LSH25 rail measures 23 mm across, so do not cut the mounting slots 25 mm apart from the size code alone. Four rows of balls contact crossed 45 degree raceways at two points each, which is what lets a preloaded carriage run smoothly while the preload removes free play in every direction.
Preload is paid for in installation latitude: over a 500 mm span the allowable height error tightens from 130 um on the plain grade to 85 um here, and parallelism from 30 to 22 um. In exchange, the block holds 26.9 kN dynamic and 39.4 kN static with 0.44 / 0.38 / 0.38 kN.m of moment capacity, now without backlash. If your fixture is a cantilever, remember the long L carriage raises MR to 0.58 kN.m - a gain of about a third for one part - while a second carriage on the same rail attacks tipping along the travel instead.
Airtac LSH Linear Guide Rail LSH25HN1X1000S20BN-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25HN1X1000S20BN-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 | 1000 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 LSH25HN1X1000S20BN-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. |
| 1X1000 | 1 carriage on a 1000 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, 1000 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 LSH25HN1X1000S20BN-M6 Is Used
Vertical Z axis with brake drop
On a vertical axis the preloaded carriage stops the head from rattling when the brake releases, and the 39.4 kN static rating carries the parked weight.
Optical alignment bench
A metrology bench sliding a laser head needs zero lost motion; preload B removes play while the 12-37 um parallelism band of normal grade keeps the beam path honest.
Clamp press slide
A press fixture pushes through its stroke and retracts under spring force - a reversing duty where the preloaded block keeps the punch tracking the die.
Is the Airtac LSH Linear Guide Rail LSH25HN1X1000S20BN-M6 the Right Guide?
Decide preload by load direction: steady one-way loads rarely need it, so the plain A version is cheaper to install, while vibratory or reversing loads do benefit. For light duties in tight spaces, LRM is the step down, but we confirm its figures per application because they are not published. For moment-bound cantilevers, step up to LSH30 (MR 0.66 kN.m) or take the long carriage; for short-travel work needing roller stiffness, LGC is the alternative. Before ordering, tick off: complete set versus parts, this 23 mm-wide size 25 rail, square standard block, one block, 1000 mm rail length, normal accuracy, light preload with its 85 um height limit, M6 fitting - or the pairing code off your original carriage if this replaces part of an existing set.
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 LSH25HN1X1000S20BN-M6 FAQ
The standard-length LSH25 carriage here is rated 26.9 kN dynamic and 39.4 kN static (C0 runs about 1.5 times C), with static moments of 0.44 MR, 0.38 MP and 0.38 My kN.m. Accuracy is normal grade, running parallelism 12-37 um depending on finished length. Use M6 mounting screws: 1370 N.cm into steel, 921 into cast iron, 686 into aluminium. Lubrication is Mobilux EP2, 3.6 cm3 factory fill and 1.1 cm3 per top-up, repeated every 100 km of travel or every 3 to 6 months.
It elastically preloads the ball rows so free play disappears - useful under reversing or vibratory loads - but the guide becomes less forgiving of a rough mounting surface: allowable height error over 500 mm of rail spacing drops from 130 um to 85 um and parallelism from 30 um to 22 um. Set-up therefore matters more: respect the 1 mm maximum corner radius on shoulders, seat the bolt caps flush, and torque the M6 screws correctly, because how flat the rail is pulled down largely decides the accuracy you actually get.
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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 LSH25HN1X1000S20BN-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.