Airtac LSH Linear Guide Rail LSH15HN1X120S30BH-M4
The AirTAC Airtac LSH Linear Guide Rail LSH15HN1X120S30BH-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
- Carriages1
- Rail length120 mm
- AccuracyH — high 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 LSH15HN1X120S30BH-M4
Light preload and high accuracy in one small set. LSH15HN1X120S30BH-M4 is a size 15 complete guide - a single square standard-length carriage on a 120 mm rail, M4 side fitting, accuracy grade H, preload grade B. Inside the carriage, four ball rows run in X-crossed 45 degree raceways with two contact points per ball, spreading load evenly in every direction and absorbing slight misalignment of the mounting surface. The rail is 15 mm wide, matching the size code. The box contains the matched rail and carriage together, not separate parts to pair up.
Preload B removes the internal play that a zero-preload carriage has, which is why this version suits duty with direction reversals or light vibration. The trade-off is installation latitude: allowable height error drops from 130 um with no preload to 85 um here, and allowable parallelism from 25 um to 18 um at 500 mm spacing. Grade H running parallelism sits between 7 and 28 um. Ratings per standard carriage: 11.3 kN dynamic, 17.9 kN static, 0.12 kN.m moment each way.
Airtac LSH Linear Guide Rail LSH15HN1X120S30BH-M4 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH15HN1X120S30BH-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 | 1 |
| Rail length | 120 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 | H — high grade |
| Preload grade | B — light 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 LSH15HN1X120S30BH-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. |
| 1X120 | 1 carriage on a 120 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. |
| H | H — high 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, 120 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 LSH15HN1X120S30BH-M4 Is Used
SMD feeder pick-and-place
Short, fast strokes feeding components to a placement head reward the light preload: no play at each direction reversal, and the H grade keeps motion smooth through thousands of cycles per shift.
Laser focus stage
Carries a focusing lens or mirror where backlash on reversal would blur the spot. Preload B removes that play, and grade H parallelism of 7-28 um keeps the axis true over the short 120 mm stroke.
Desktop CNC slide upgrade
Replaces a worn bushing slide on a compact router or mill with a recirculating-ball guide. The 120 mm rail fits a small frame, and the standard square carriage swaps onto a simple milled pocket.
Is the Airtac LSH Linear Guide Rail LSH15HN1X120S30BH-M4 the Right Guide?
Before ordering, work through the match: form (this code is a complete set - rail and carriage together), size chosen on both load and moment, carriage style and length, carriage count and rail length, accuracy grade and preload, grease fitting, and the pairing code if you are matching to parts you already have. Preload B and accuracy H cost installation latitude, so confirm your machining capability first. If the duty is light and the envelope small, LRM may be enough - its ratings are not published, so we check them with you. If the stroke is short and stiffness per millimetre matters more than travel, LGC crossed rollers are the alternative. If the 0.12 kN.m moment limit is the binding constraint, a long carriage or a step up to LSH20 addresses it faster than more load margin does.
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 LSH15HN1X120S30BH-M4 FAQ
Each standard-length carriage is rated 11.3 kN basic dynamic, 17.9 kN basic static, and 0.12 kN.m static moment about MR, MP and My alike. Grade H running parallelism falls in the 7-28 um band. Mount the rail using M4 screws tightened to 412 N.cm in steel, 274 N.cm in cast iron, 206 N.cm in aluminium. First lubricant charge is about 0.9 cm3 of Mobilux EP2 per carriage; re-grease with 0.3 cm3 after every 100 km of travel or every 3 to 6 months, whichever comes first.
Play-free operation has a price at the mounting surface. At 500 mm rail spacing, this preload B set allows 18 um of parallelism error and 85 um of height error, where a zero-preload set allows 25 um and 130 um; medium preload C would demand 13 um and 35 um. The self-aligning feature absorbs only errors inside these figures - it is not a licence to skip machining. Scale the values to your actual rail spacing and have the face machined to match before fitting.
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 LSH15HN1X120S30BH-M4
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.