Airtac LSH Linear Guide Rail LSH15BK-F1N-H-B-M4
The AirTAC Airtac LSH Linear Guide Rail LSH15BK-F1N-H-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
- AccuracyH — high 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-H-B-M4
One carriage, no rail: the LSH15BK-F1N-H-B-M4 is the block half of an LSH15 guide, supplied on its own for anyone who already has a sound rail. What arrives is a single size 15 top-flange carriage, standard length, high accuracy grade, with an M4 grease point and pairing code B. Four rows of recirculating balls sit in X-shaped arc raceways cut at a 45 degree contact angle, two contact points per ball, so the block resists loads and overturning moments equally in all four directions and absorbs slight mounting misalignment internally instead of binding. Size 15 corresponds to a true 15 mm rail width.
Per-carriage ratings are 11.3 kN dynamic (C) and 17.9 kN static (C0), with 0.12 kN.m allowable static moment in each of the MR, MP and My directions. Static sits roughly 1.5 times above dynamic across this family, so size the travel life on C and use C0 only for shock or dwell conditions. If your tool overhangs the carriage, the moment figure usually decides the size: stepping to LSH20 lifts MR from 0.12 to 0.27 kN.m, more than double, in a single move.
Airtac LSH Linear Guide Rail LSH15BK-F1N-H-B-M4 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH15BK-F1N-H-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 | H — high 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-H-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. |
| H | H — high 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-H-B-M4 Is Used
SMT pick-and-place slide
A surface-mount placement head running on a 15 mm profile rail starts to stutter as its original block wears; this code B carriage drops onto the existing rail and restores smooth indexing without a rail change.
Bench-top glue gantry
A two-axis dispensing gantry takes a second block to stop the dispense head tipping along the travel; the F1 flange bolts straight down through its top face onto the machine plate.
Laser optics alignment stage
A laboratory alignment stage rebuilt around the H accuracy grade gains 7-28 um running parallelism over its stroke, tight enough for micron-class optic positioning.
Is the Airtac LSH Linear Guide Rail LSH15BK-F1N-H-B-M4 the Right Guide?
Work the choice both ways. For light duty in a tight envelope, LRM is the smaller step, but its load ratings are not published, so ask us to confirm them against this block's 11.3 kN before you downsize. Where a cantilevered load governs, go up a size or to a long carriage rather than piling on blocks; a second block addresses tipping along the rail, while the size step addresses moment across it. When travel is short and the job wants crossed-roller rigidity rather than long recirculating travel, compare LGC instead. Final checklist: carriage only (no rail in this order), size picked on load and moment together, F1 top flange at standard length, accuracy grade H, M4 fitting, and pairing code B, which must equal the letter on the rail you will run it on.
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-H-B-M4 FAQ
Per carriage: dynamic C 11.3 kN, static C0 17.9 kN, allowable static moments MR 0.12, MP 0.12 and My 0.12 kN.m. Accuracy grade H runs at 7-28 um running parallelism over its rail-length band. The rail beneath takes M4 screws at 412 N.cm in steel, 274 in cast iron or 206 in aluminium, with abutment shoulders of H 3.5, H1 3 and H2 4 mm and corner radius no greater than 0.5 mm. Grease: 0.9 cm3 first charge of Mobilux EP2, 0.3 cm3 top-ups, every 100 km of travel or every 3 to 6 months.
No. You receive one carriage only; the rail is a separate order. LSH rails and carriages are split by a pairing letter so matched parts stay together, and this block carries code B, meaning it will run only on an LSH15 rail also marked B. Note that this ordering shape contains no preload position, so a defined preload grade requires the complete-set code. As a flange-type block, it also should not take a side-mounted grease nipple where the fitting could foul the body, so check the fitting position before mounting.
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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-H-B-M4
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