The AirTAC Airtac LSH Linear Guide Rails LSH15BK-F3N-N-D-M4-E 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.
This is the carriage only from AirTAC's LSH15 range: an F3 flange block, standard length, normal accuracy grade, with an M4 grease nipple. No rail is included - pair it with an LSH15 rail carrying the same pairing code, D. Four rows of balls run in X-arranged 45 degree arc raceways with two contact points per ball, so the block carries load equally in all four directions and absorbs slight mounting misalignment instead of binding. The F3 flange gives you threaded fixing faces on both the top and the underside of the block, and the rail it rides on is 15 mm wide.
Ratings per carriage: 11.3 kN basic dynamic C, 17.9 kN basic static C0, and 0.12 kN.m on each of the MR, MP and My moment axes. Static capacity sits roughly 1.6 times above dynamic, so a statically clamped fixture has more headroom than a travelling one - but size a moving axis on C, because travel life follows the dynamic figure. As a flange block, side-mounted grease fittings are not recommended, so check that the M4 nipple on this part clears neighbouring components before bolting down. The F3 carriage style is available to order.
| Model | Airtac LSH Linear Guide Rails LSH15BK-F3N-N-D-M4-E |
|---|---|
| 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 and bottom 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.
| 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. |
| 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.
On a small electronics pick-and-place head, the F3 flange bolts from underneath, leaving the top face of the block clear for the tool plate and sensor bracket.
A worn flange block on a labelling machine's dispenser slide is a quarter-of-the-set repair: swap the carriage, keep the sound rail, and match pairing code D.
Where a square block will not fit under a screw-feeding escapement chute, the F3 underside threads let the guide hang below the deck - a common retrofit on assembly-line feeders.
Confirm the form first: this SKU is a block without a rail. Size by load and moment together - 11.3 kN dynamic and 0.12 kN.m moment put LSH15 in light-duty territory. If a cantilevered load needs more moment, one step up to LSH20 lifts MR to 0.27 kN.m; adding a second carriage on the same rail instead counters tipping along the travel. Downward, LRM suits lighter duties in a tighter envelope, though its load ratings are not published and we confirm them for your case. Across, LGC fits short-travel work needing crossed-roller rigidity. Checklist: carriage only (no rail), size by load and moment, F3 flange, standard length, accuracy N, grease fitting M4, and pairing code D matched to your rail.
Quick checklist
Per carriage: basic dynamic load C 11.3 kN, basic static load C0 17.9 kN, allowable static moments MR 0.12, MP 0.12 and My 0.12 kN.m. Normal accuracy grade gives running parallelism of 12-37 um across the rail length bands. The rail mounts on M4 screws torqued to 412 N.cm in steel, 274 N.cm in cast iron or 206 N.cm in aluminium. The block leaves the factory charged with 0.9 cm3 of Mobilux EP2; re-grease with 0.3 cm3 every 100 km of travel or every 3 to 6 months, whichever comes first.
No. This code buys the F3 flange carriage alone; the profile rail is a separate SKU and is not in the box. To pair it with a rail, both parts must carry the same pairing letter: this block is coded D, so your LSH15 rail must be too. Read the letter off the old block, its packaging or the original complete-set code before ordering, because carriages and rails with other letters are different products.
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Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.