
The AirTAC Airtac LSH Linear Guide Rail LSH15BK-F2N-P-E-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.
Order LSH15BK-F2N-P-E when an existing LSH15 rail needs a new block: this is the F2 bottom-flange carriage in precision grade and standard length, with an M4 nipple, and it comes with no rail of any length. The running gear is a four-row ball circuit on 45 degree X-pattern arc raceways; because each ball touches at two points and the rows oppose one another, loads from above, below or the side all meet the same capacity, and light mounting error is soaked up inside the block rather than turning into hard spots. The rail under it measures 15 mm wide.
Numbers per carriage: C 11.3 kN, C0 17.9 kN, and MR/MP/My of 0.12 kN.m each - static runs about 1.5 times dynamic here, another way of seeing that C is the figure to size on for travel life. P grade parallelism spans 3-21 um. One flange-specific caution: a side grease fitting on any F-type block can foul neighbouring parts, so check clearance around the nipple before final mounting; the underside flange keeps the top face free, which helps under a crowded machine plate.
| Model | Airtac LSH Linear Guide Rail LSH15BK-F2N-P-E-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, 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 | 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.
| 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. |
| 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.
Maintenance engineers restoring a granite-based vision stage usually buy the carriage, not the set, when the 15 mm rail checks out straight. This P-grade block brings back the 3-21 um parallelism band the stage was built around.
Flex testers drag a fixture back and forth for millions of cycles, and the carriage is the wear item. At roughly a quarter of a complete set's price, renewing the block is the economical repair - C 11.3 kN carries the fixture while C0 17.9 kN absorbs the jerk at each reversal.
A workshop coordinate table with sloppy slides gets a second life from a fresh bottom-flange block; the M4 nipple sits to the side, so confirm the fitting clears the table skirt before final assembly.
This code is carriage only - confirm that is what you need before adding it to the cart. Size by load and moment together: cantilevered tools usually hit MR first, where an LSH20 carriage helps more than another increment of C; light compact axes may step down to LRM (its ratings are unpublished, so we verify them for you), and short-stroke stiff axes to LGC. Machine weights and overall block dimensions beyond the published shoulder figures are not in the catalogue - ask us for the datasheet.
Final checks: F2 flange bolted from below, standard length, P accuracy, M4 fitting, and pairing code E, which must be identical on the rail you are matching. Preload is only ever stated on complete set codes, never on part codes - build the grade into a set order if you need it.
Quick checklist
Per block: C 11.3 kN dynamic, C0 17.9 kN static, moments 0.12/0.12/0.12 kN.m for MR/MP/My. P grade parallelism band: 3-21 um. Mounting: M4 socket screws at 412 N.cm into steel, 274 N.cm cast iron, 206 N.cm aluminium. Grease: 0.9 cm3 initial, 0.3 cm3 at each service, every 100 km of travel or 3-6 months with Mobilux EP2 or an equivalent.
One F2 precision carriage with an M4 nipple - a rail is not supplied, and this code is not a complete guide. The trailing E is the pairing code: the rail must carry the same letter for us to match the pair, so read it off the original carriage or its invoice before ordering. LSH carriages interchange only within the LSH model family, not with other brands' rails.
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Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.