Airtac LSH Linear Guide Rail LSH15BK-F1N-N-B-M4
The AirTAC Airtac LSH Linear Guide Rail LSH15BK-F1N-N-B-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
- AccuracyN — normal 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-N-B-M4
This SKU is the carriage alone from the AirTAC LSH range: an F1 top-flange block, standard length, normal accuracy grade, M4 grease nipple, pairing code B. NO RAIL IS INCLUDED - order an LSH15RLX rail carrying the same pairing letter B, or match it to a rail you already run. Inside, four rows of balls run in X-shaped arc raceways set at 45 degrees, so the block carries equal load up, down and sideways, and its two-point ball contact absorbs slight mounting-surface error instead of binding. The size code 15 corresponds to a true rail width of 15 mm.
Per carriage, the catalogue rates this standard-length size 15 block at 11.3 kN dynamic (C) and 17.9 kN static (C0), with moment ratings of 0.12 kN.m identical about all three axes - a direct consequence of the symmetrical X geometry. The static figure sitting about 1.6 times above the dynamic one is normal for this range; size on C for travelling duty and let C0 govern shock and holding loads. Need more bending capacity? Stepping to size 20 lifts MR from 0.12 to 0.27 kN.m, more than double, for a single dimension change.
Airtac LSH Linear Guide Rail LSH15BK-F1N-N-B-M4 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH15BK-F1N-N-B-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 | N — normal 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-N-B-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. |
| N | N — normal 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-N-B-M4 Is Used
Benchtop CNC mill Z-slide rebuild
A benchtop milling machine or drilling gantry with a worn size 15 guide gets its quill slide back on spec by swapping in this F1 block - bolt the flange down from the top and re-shim until rail-to-rail parallelism sits inside the 13-25 um allowance size 15 tolerates at 500 mm spacing, depending on preload.
Laboratory positioning stage
A small optical or metrology stage that trundles a camera or sensor back and forth benefits from the equal 0.12 kN.m moment ratings in all three axes, carrying an offset payload without direction-dependent sag.
Bottling line reject-gate guide
A reject gate or bottle pusher on a bottling conveyor cycles millions of short strokes; a fresh block restores smooth travel while the sound rail stays clamped in place on the frame.
Is the Airtac LSH Linear Guide Rail LSH15BK-F1N-N-B-M4 the Right Guide?
Start from the moment, not just the load: at size 15 the 0.12 kN.m moment ratings are usually the binding constraint for any cantilever. If your envelope is tight and the duty light, AirTAC's LRM miniature series may fit, but its load ratings are not published in our data, so ask us to confirm them before you swap. If travel is short - a few hundred millimetres - and you need crossed-roller stiffness rather than long recirculating travel, LGC is the step across. Where the moment ceiling is marginal, go up to LSH20 instead of adding blocks. Before ordering, tick this checklist: carriage-only form with rail not included; size chosen against load AND moment; F1 top-flange style, standard length; one block per position; accuracy grade N; M4 nipple; the pairing code B must match your rail. Note that a defined preload is specified on complete-set codes, not on part-only codes - enquire if that matters.
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-N-B-M4 FAQ
Per carriage: dynamic rating C 11.3 kN, static rating C0 17.9 kN, moment ratings MR, MP and My each 0.12 kN.m. Running parallelism for normal (N) accuracy sits in a 12-37 um band depending on rail length. The matching rail mounts with M4 screws torqued to 412 N.cm in steel, 274 in cast iron, 206 in aluminium. Grease: 0.9 cm3 first charge, 0.3 cm3 top-up, refreshed every 100 km of travel or every 3 to 6 months, whichever comes first.
No. The box holds one F1 flange carriage with an M4 nipple - there is no rail and no mounting screws. The letter B near the end of the code is the pairing code: an LSH15 rail marked B will accept this block and preserve its accuracy and running feel, so read the code off your old carriage or the rail end before ordering.
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Covers non-human-caused product damage.
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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 LSH15BK-F1N-N-B-M4
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