Airtac LSH Linear Guide Block LSH30BK-F2L-P-B-M6
The AirTAC LSH Linear Guide Block LSH30BK-F2L-P-B-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.
- SeriesLSH
- Supplied asCarriage / block only
- SizeLSH30
- Rail width28 mm
- Carriage lengthLong carriage
- AccuracyP — precision 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 Block LSH30BK-F2L-P-B-M6
This is the carriage half of the AirTAC LSH30 range, listed and sold on its own: NO RAIL IS INCLUDED in this SKU. It is the long, bottom-flange F2 block, which bolts up through its flange from underneath the machine plate so the top face of the carriage stays clear for the workpiece or tool plate. Four rows of recirculating balls sit in X-shaped arc raceways cut at a 45 degree contact angle, two contact points per ball, giving equal capacity in every direction and enough self-alignment to swallow slight mounting-surface error instead of binding. Note that LSH30 runs on a rail 28 mm wide, not 30 mm.
The long body earns its keep on cantilevered loads. Ratings per block: 45.7 kN basic dynamic (C), 73.1 kN basic static (C0), with allowable moments of MR 0.88, MP 0.91 and My 0.91 kN.m - roughly a third more roll moment than the standard-length LSH30 block, which on an overhung load often decides the design before the load rating does. Running parallelism is precision grade P, quoted as a 3 to 21 um band over the rail length range.
Airtac LSH Linear Guide Block LSH30BK-F2L-P-B-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Block LSH30BK-F2L-P-B-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 | 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.
Model Code: Airtac LSH Linear Guide Block LSH30BK-F2L-P-B-M6
| 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. |
| 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. |
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 Block LSH30BK-F2L-P-B-M6 Is Used
PCB routing gantry spindle slide
A long F2 block under an overhung routing spindle keeps roll moment inside the 0.88 kN.m MR rating where a standard-length block would run marginal.
Laser cutter XY carriage rebuild
Fitting this long precision-grade block to an existing 28 mm LSH30 rail restores an older cutting table without buying a complete set.
Modular pick-and-place axis
Bottom flange mounting leaves the carriage top face free for a tool plate on a compact multi-axis gantry module.
Is the Airtac LSH Linear Guide Block LSH30BK-F2L-P-B-M6 the Right Guide?
Size by load AND moment, not load alone: if your duty is light and the envelope is tight, step down to the LRM miniature series - its load ratings are not published, so we confirm them against your duty before you commit. If the moment calculation, not the force, is what runs out first, one size up (LSH35, an order item) or this long carriage is the fix, since the long block lifts moment capacity faster than it lifts load. Where travel is short and you need crossed-roller rigidity rather than long recirculating travel, LGC is the better cross-check.
Before you order, tick off: form (carriage only - you need a matching rail), size by both C and MR, carriage style and length, block count and rail length, accuracy grade and preload with the tighter installation tolerances preload brings, grease fitting, and the pairing code - this block is letter B and must pair with a rail carrying the same letter.
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 Block LSH30BK-F2L-P-B-M6 FAQ
Per block: basic dynamic load C 45.7 kN; basic static load C0 73.1 kN; allowable static moments MR 0.88, MP 0.91 and My 0.91 kN.m. Accuracy grade P gives a running parallelism band of 3 to 21 um. The matching LSH30 rail bolts down with M8 screws at 3040 N.cm (steel), 2010 N.cm (cast iron) or 1470 N.cm (aluminium). The block ships greased with Mobilux EP2; first charge 7.2 cm3, top-up 2.2 cm3, re-grease every 100 km of travel or every 3 to 6 months.
No. This SKU is the carriage only - the rail is NOT included. LSH carriages and rails are matched by a pairing code; this block carries code B, so the rail you fit it to must carry the same letter. If you need the rail as well, order an LSH30RLX rail-only item with code B, or a complete LSH30 set.
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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 Block LSH30BK-F2L-P-B-M6
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