Airtac LSH Linear Guide Rail LSH15BK-F1N-P-C-M4
The AirTAC Airtac LSH Linear Guide Rail LSH15BK-F1N-P-C-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 asCarriage / block only
- SizeLSH15
- Rail width15 mm
- Carriage lengthStandard carriage
- AccuracyP — precision grade
- 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 LSH15BK-F1N-P-C-M4
Listed here is a single AirTAC LSH15 carriage in F1 top-flange form, standard length, precision grade, M4 nipple, pairing letter C - and explicitly no rail. Four rows of balls circulate through X-configuration arc raceways set on a 45 degree contact angle, two contact points per ball; the layout takes loads equally in every direction and absorbs minor mounting-surface defects inside the block instead of turning them into stiction. The size code 15 corresponds to a rail 15 mm wide.
The precision grade is the headline: running parallelism holds within a 3-21 um band over the length of the rail, the tightest tolerance the series offers. Ratings per block are 11.3 kN dynamic and 17.9 kN static - the static figure sits about 1.58 times above the dynamic one, yet it is C, not C0, that sets travel life - with 0.12 kN.m moment capacity in each of MR, MP and My. If you select the preload grade of the mating rail, budget installation accuracy accordingly: on this size the permitted height error at 500 mm rail spacing tightens from 130 um with no preload to 35 um at medium.
Airtac LSH Linear Guide Rail LSH15BK-F1N-P-C-M4 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH15BK-F1N-P-C-M4 |
|---|---|
| Series | LSH Series Linear Guide |
| Supplied as | Carriage / block only |
| 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 | Flange, top mounting |
| Carriage length | Standard carriage |
| 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 | P — precision grade |
| 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, matched by the pairing code |
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. This item is a carriage only. Order a complete set if you also need a rail.
Model Code: Airtac LSH Linear Guide Rail LSH15BK-F1N-P-C-M4
| LSH | LSH Series Linear Guide. |
|---|---|
| 15 | Size code. |
| BK | Carriage / block only — no rail supplied. |
| H / F1 / F2 / F3 | Carriage style: square, or flange mounted from the top, bottom, or both. |
| N | Standard carriage. |
| P | P — precision grade. |
| Pairing code | Rails and carriages must share a pairing code. Take it from the original part when replacing. |
| -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 | Carriage / block only |
|---|---|
| Rail | No — not supplied with this item |
| Carriage | Yes, one |
This is a carriage on its own. NO RAIL IS INCLUDED. 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 LSH15BK-F1N-P-C-M4 Is Used
Microscope stage carriage renewal
A benchtop metallurgical microscope's X-stage drags after years of service. Fitting this P-grade block on the existing rail restores the 3-21 um straightness the optics demand without replacing the stage casting.
Granite rail inspection fixture
An inspection fixture on a granite plate rides two precision rails; a replacement top-flange block bolts down through its flange so the fixture plate stays flat, keeping dial-indicator travel within a few um.
CO2 laser head service
The focus carriage on a laser cutter wanders under beam load. A precision-grade F1 block, greased and run in, brings the beam path back on line; re-tension the drive belt after the swap.
Is the Airtac LSH Linear Guide Rail LSH15BK-F1N-P-C-M4 the Right Guide?
Do not buy this block on dynamic rating alone. Work the moment case first if the load hangs off the axis: a long block or a one-size step to LSH20 (MR 0.27 kN.m standard) buys far more moment capacity than a second block on the same rail, which instead cures tipping along the travel. Where the duty is genuinely light and space is scarce, the LRM range is the smaller alternative, but its load ratings are unpublished, so send us the duty and we confirm suitability. For short travels needing the stiffness of crossed rollers rather than long recirculating runs, compare LGC.
Order checklist: confirm the carriage-only form is what you need, size by both load and moment, F1 flange with standard length, how many blocks per rail and the rail length, N/H/P grade matched on both parts, the rail's preload letter with the installation-tolerance cost in mind, the M4 fitting correct for this size, and the pairing code C shared with the 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 LSH15BK-F1N-P-C-M4 FAQ
Per carriage: C 11.3 kN dynamic, C0 17.9 kN static, MR 0.12 / MP 0.12 / My 0.12 kN.m; running parallelism 3-21 um in the P band; rail fixing M4 screws torqued 412 / 274 / 206 N.cm on steel, cast iron and aluminium; lubrication Mobilux EP2, 0.9 cm3 at first fill and 0.3 cm3 top-ups, repeated every 100 km travelled or every 3-6 months.
One flange carriage, nothing else - the rail is a separate SKU. The trailing letter is the pairing code, and rail and carriage must both carry C for the pair to assemble correctly. Buy the rail under a rail-only LSH15 code ending in C at the length you need; the block slides straight on, keeps its P-grade accuracy, and its running preload follows whatever preload grade that rail carries.
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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 LSH15BK-F1N-P-C-M4
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