Airtac LSH Linear Guide Rail LSH15HN2X300S30AN-M4
The AirTAC Airtac LSH Linear Guide Rail LSH15HN2X300S30AN-M4 is a standard-type profile linear guide on a 15 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
- SizeLSH15
- Rail width15 mm
- Carriage lengthStandard carriage
- Carriages2
- Rail length300 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 LSH15HN2X300S30AN-M4
This is a complete LSH15 linear guide set: one 300 mm profile rail with two square (H type) standard-length carriages riding on it, 30 mm end-hole offset, no preload, normal (N) accuracy and an M4 grease nipple in each carriage. Nothing else is needed to build a working axis - rail, blocks and bolt caps ship together. The LSH15 rail is 15 mm wide; at this size the code and the calipers agree. Four rows of recirculating balls run in X-shaped arc raceways set at 45 degrees, so each ball touches its raceway at two points and the carriage carries load equally upward, downward and sideways. Because the rows oppose each other at that angle, a small tilt in the mounting surface is taken up inside the carriage instead of turning into bind.
Per carriage the ratings are 11.3 kN dynamic (C) and 17.9 kN static (C0), with 0.12 kN.m allowable moment in each of the roll, pitch and yaw directions. Two carriages on one 300 mm rail halve the load each one sees and, when the payload sits between them, roughly double the resistance to tipping along the travel. N grade running parallelism falls in the 12-37 um band over the rail length. With no preload the guide forgives the most installation error: up to 130 um of height difference between rails at 500 mm spacing.
Airtac LSH Linear Guide Rail LSH15HN2X300S30AN-M4 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH15HN2X300S30AN-M4 |
|---|---|
| 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 | LSH15 |
| Rail width | 15 mm |
| Carriage style | Square (compact) |
| Carriage length | Standard carriage |
| Carriages supplied | 2 |
| Rail length | 300 mm |
| Basic dynamic load rating C | 11.3 kN per carriage |
|---|---|
| Basic static load rating C0 | 17.9 kN per carriage |
| Allowable static moment | MR 0.12 / MP 0.12 / My 0.12 kN·m |
| Accuracy grade | N — normal grade |
| Preload grade | A — no preload |
| Mounting screws | M4 — 412 N·cm into steel, 274 cast iron, 206 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 LSH15HN2X300S30AN-M4
| LSH | LSH Series Linear Guide. |
|---|---|
| 15 | Size code. |
| H / F1 / F2 / F3 | Carriage style: square, or flange mounted from the top, bottom, or both. |
| N | Standard carriage. |
| 2X300 | 2 carriages on a 300 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, 300 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 LSH15HN2X300S30AN-M4 Is Used
Desktop CNC router gantry
A benchtop router plate carries its spindle between two of these 300 mm rails; the twin square blocks take the cutting side-load and keep the 15 mm rail from racking under a cantilevered motor.
CO2 laser engraver X-axis
With no preload the carriage runs with minimal drag, so a small stepper or belt drive accelerates the head quickly; the 12-37 um normal-grade parallelism is ample for a 0.1 mm spot.
Round-rail to profile-rail retrofit
Swapping worn 15 mm round shafts and open blocks for this profile rail set removes the shaft clamp points and gives a self-aligned, bolt-down mounting on the same machined base.
Is the Airtac LSH Linear Guide Rail LSH15HN2X300S30AN-M4 the Right Guide?
For light duty and tight envelopes, the LRM mini series steps down from this set - its published data does not include load ratings, so we confirm those against your duty before quoting. If your load is cantilevered, check moment first: this carriage's 0.12 kN.m MR is the number to beat, and moving to LSH20 lifts it to 0.27 kN.m with a standard block - a bigger gain than any other single change at this size. Where travel is short and the job wants crossed-roller rigidity rather than long recirculating travel, LGC is the alternative to price. Match checklist before ordering: set form (rail plus blocks) versus carriage-only; size chosen on load AND moment; carriage style (square H here) and length; block count and rail length; accuracy grade and preload, remembering tighter preload shrinks the allowable mounting error; grease fitting positioned where you can reach it; a pairing code only matters when you are buying a part to match an existing rail.
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 LSH15HN2X300S30AN-M4 FAQ
Per carriage: 11.3 kN basic dynamic (C) and 17.9 kN static (C0), with allowable static moments of 0.12 kN.m roll (MR), 0.12 kN.m pitch (MP) and 0.12 kN.m yaw (My). Running parallelism for N grade sits in the 12-37 um band. The rail mounts on M4 screws torqued to 412 N.cm in steel, 274 in cast iron or 206 in aluminium. Each carriage ships with 0.9 cm3 of Mobilux EP2; top up 0.3 cm3 every 100 km of travel or every 3 to 6 months.
This set is grade A - no preload - so the internal clearance absorbs slight mounting error. At 500 mm rail spacing LSH15 tolerates 130 um of height difference and 25 um of parallelism error between rails. Light preload B cuts that to 85 um and 18 um, medium C to 35 um and 13 um. If your base plate can be machined flat within the 130/25 um figures, no preload gives the freeest-running axis; if you need the extra rigidity, accept the tighter machining that preload demands.
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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 LSH15HN2X300S30AN-M4
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