
The AirTAC LSH Linear Guide Block LSH30BK-HN-P-E-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.
Think of this SKU as the wear item of an LSH30 guide, sold separately: one square, standard-length AirTAC carriage at precision grade, pre-filled with Mobilux EP2 grease and fitted with an M6 nipple for service top-ups. It is not a complete guide and no rail is supplied. Four rows of balls circulate in X-angled 45 degree arc raceways with two contact points per ball, so loading direction barely matters and slight misalignment in the machine frame is tolerated. The companion LSH30 rail is 28 mm wide.
Factory charge is 5.4 cm3 of grease; top-ups are 1.7 cm3, due every 100 km of travel or every 3 to 6 months, whichever comes first - on a machine cycling a 300 mm stroke once a second, the 100 km mark arrives in about a fortnight. Fresh ratings per block are 37.4 kN dynamic, 55.0 kN static and 0.66 / 0.67 / 0.67 kN.m of moment. This carriage is pairing code E and will only deliver those figures on a rail with the same code.
| Model | Airtac LSH Linear Guide Block LSH30BK-HN-P-E-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 | Square (compact) |
| Carriage length | Standard carriage |
| Basic dynamic load rating C | 37.4 kN per carriage |
|---|---|
| Basic static load rating C0 | 55.0 kN per carriage |
| Allowable static moment | MR 0.66 / MP 0.67 / My 0.67 kN·m |
| Accuracy grade | P — precision 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 listed 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. |
| 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.
After a missed grease schedule roughened a palletizing cell's lift guide, fitting this pre-charged block restores smooth travel without replacing the long rail.
The lift mast of an automated guided vehicle runs on size 30 blocks; a service swap to a fresh carriage resets the 5.4 cm3 grease charge and the full 37.4 kN rating in one part.
A locating slide on a weld fixture, re-fitted with this square block, keeps its repeat position; the M6 fitting sits where a grease gun reaches between weld cycles.
Service math first: a 300 mm stroke cycling once a second covers 100 km in roughly two weeks of continuous running, so on a busy machine the distance interval, not the calendar, calls the re-grease. This block arrives with its 5.4 cm3 charge already in place, which is why a fresh carriage is often all a tired axis needs - at about a quarter of a complete set's price, provided the rail is sound and its pairing letter known. If the duty is lighter and the envelope tighter, LRM steps down, with ratings we confirm by RFQ; if the stroke is short and you want crossed-roller stiffness, step across to LGC. Order checklist: carriage-only form, size by load and moment, square style and standard length, block count and rail length for a set, accuracy and preload with their mounting-tolerance cost, grease fitting, pairing code.
Quick checklist
Per carriage: 37.4 kN dynamic rating, 55.0 kN static, and allowable moments of 0.66 kN.m roll, 0.67 kN.m pitch and 0.67 kN.m yaw. Precision grade gives 3-21 um running parallelism across the rail length range. The rail it rides on takes M8 screws at 3040 N.cm (steel), 2010 N.cm (cast iron) or 1470 N.cm (aluminium). Grease-wise the block holds 5.4 cm3 from the factory and wants 1.7 cm3 per top-up every 100 km of travel or 3 to 6 months.
No rail is included; this listing is the carriage alone. The pairing letter E on this block must match the letter on the rail it runs on - that is how AirTAC keeps preload and precision grade intact across the pair. If the letter on your old carriage or rail is worn away, send the full model code of the original set, or the rail length and an end-view photo, and we will work out the match before you order.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
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.