
The AirTAC Airtac LSH Linear Guide Rail LSH30BK-F2L-N-C-M6 is a standard-type profile linear guide on a 28 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 code describes one component: a long, bottom-flange (F2) LSH30 carriage at normal accuracy with an M6 lubrication point, sold under pairing code C. The hardened profile rail it runs on is a separate purchase, and this carriage-only code carries no rail length and no preload declaration - those live on complete-set and rail-only orders. Size 30 is a code, not a width: the rail under it measures 28 mm. Four rows of balls recirculate through 45 degree X-configuration arc grooves, two contact points per ball, so the block carries load evenly in radial, reverse-radial and both lateral directions while smoothing out small errors in the mounting face.
The figures that matter per carriage: 45.7 kN dynamic, 73.1 kN static and 0.88 / 0.91 / 0.91 kN.m of MR / MP / My moment. Static sits about 1.6 times above dynamic on this size - a real buffer against shock and impact - but size the axis on the dynamic rating, because C governs travel life. Interchangeability is a practical bonus: any LSH30 carriage fits any LSH30 rail of the model and keeps its rated smoothness, preload and accuracy.
| Model | Airtac LSH Linear Guide Rail LSH30BK-F2L-N-C-M6 |
|---|---|
| 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 | LSH30 |
| Rail width | 28 mm (the size code is not the rail width above size 20) |
| Carriage style | Flange, bottom mounting |
| Carriage length | Long carriage |
| Basic dynamic load rating C | 45.7 kN per carriage |
|---|---|
| Basic static load rating C0 | 73.1 kN per carriage |
| Allowable static moment | MR 0.88 / MP 0.91 / My 0.91 kN·m |
| Accuracy grade | N — normal grade |
| Mounting screws | M8 — 3040 N·cm into steel, 2010 cast iron, 1470 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. |
|---|---|
| 30 | Size code — note the rail is 28 mm wide, not 30 mm. |
| BK | Carriage / block only — no rail supplied. |
| H / F1 / F2 / F3 | Carriage style: square, or flange mounted from the top, bottom, or both. |
| L | Long 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.
Sheet-feed tables on laser cutters run thousands of metres a week, and the carriages brinell long before the rails do. Fitting this long bottom-flange block, pairing C, to the sound rail restores feed accuracy for a fraction of a full re-glide.
When a servo-driven glue dispensing slide starts to stick-slip, a worn carriage is the usual culprit. Replacing it with a fresh long block lets the drive re-tune at lower gain, cutting overshoot at the end of each bead.
The saddle that carries a palletiser's arm sees tipping loads at the extremity of travel. The long body's 0.88 kN.m MR rating addresses that overhang, and maintenance can swap the block in place without disturbing the rail datum.
Pairing is what this ordering code is really for. Letter C tells you which LSH30RLX rail the block runs on, and it exists so a replacement carriage preserves the original combination's feel and accuracy. So step one: read the pairing letter off your old part. If the rail itself is scored or worn, buy a complete set instead of pairing new to old. For light duties in tight envelopes, step down to LRM and we will confirm its figures with you, since they are not published. For short-travel stages needing crossed-roller rigidity, LGC is the better series. Checklist: carriage-only form, size 30 sized by load and moment together, F2 flange, long body, N accuracy, M6 fitting, pairing C.
Quick checklist
Per carriage: dynamic rating C 45.7 kN, static C0 73.1 kN, allowable moments MR 0.88 kN.m, MP 0.91 kN.m, My 0.91 kN.m. Grade N accuracy means running parallelism between 12 and 37 um, set by rail length. The matching rail is screwed down with M8 bolts at 3040 N.cm on steel, 2010 on cast iron, 1470 on aluminium. Lubrication: 7.2 cm3 Mobilux EP2 first charge, 2.2 cm3 top-up at each service, every 100 km of travel or every 3 to 6 months.
You receive the carriage only - no rail, no rail mounting screws, no preload grade. The pairing letter is how matched parts find each other: this block is coded C, so the rail you order must also be a code-C LSH30RLX. The letter is normally marked on the original carriage; if it is illegible, send us the old part reference and we will confirm the match before you buy.
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Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.