Airtac LSH Linear Guide Block LSH30BK-HN-P-B-M6
The AirTAC LSH Linear Guide Block LSH30BK-HN-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 lengthStandard 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-HN-P-B-M6
The LSH30BK-HN-P-B-M6 is a single AirTAC LSH carriage - the square (H) style, standard length, precision (P) accuracy grade, delivered with an M6 grease fitting. No rail is included in this listing. Four rows of recirculating balls sit in X-arranged arc raceways at 45 degree contact, two contact points per ball, so the block takes equal load in all four directions and soaks up slight mounting-surface error instead of jamming. It runs on the LSH30 profile rail, which is 28 mm wide, not the 30 mm the size name implies.
Per block, the catalogue gives 37.4 kN dynamic (C), 55.0 kN static (C0) and allowable moments of 0.66 / 0.67 / 0.67 kN.m for roll, pitch and yaw. C0 sits only about 1.5 times above C, so resist sizing on the bigger static number; dynamic C is what governs travel life. This unit is pairing code B and must be matched to an LSH30 rail carrying the same letter, or the factory-set preload and accuracy will not carry over.
Airtac LSH Linear Guide Block LSH30BK-HN-P-B-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Block LSH30BK-HN-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 | 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.
Model Code: Airtac LSH Linear Guide Block LSH30BK-HN-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. |
| 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. |
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-HN-P-B-M6 Is Used
CNC router gantry rebuild
A 1325-format CNC router develops backlash on one gantry block; swapping in this precision square carriage on the existing 28 mm LSH30 rail restores the full 37.4 kN rating without re-machining the gantry.
Cartesian robot X-axis service
During a changeover window, a maintenance tech replaces the fatigued X-axis block on a small Cartesian pick-and-place robot, quoting pairing code B so the new carriage matches the rail already fitted.
Press feed slide conversion
A toolroom converting the feed slide of a small mechanical press from a bronze gib to rolling contact bolts this square block under the feed beam and pairs it with a new code-B rail.
Is the Airtac LSH Linear Guide Block LSH30BK-HN-P-B-M6 the Right Guide?
Before you buy, decide the form: this SKU is the carriage alone, so it suits a repair or an upgrade to an existing LSH30 rail, not a new build. It is also worth costing the repair: a block on its own runs roughly a quarter of the price of a complete set, so a sound rail plus a fresh square carriage is the economical fix - as long as you read the pairing letter off the old part. If the duty turns out lighter than size 30, the LRM family steps down in envelope, but its load ratings are not published, so we confirm them by RFQ first. Where travel is short and the job wants crossed-roller stiffness rather than long recirculating travel, LGC is the alternative. Full checklist: form (carriage only), size by load and moment together, carriage style and length, count and rail length if a set is being built, accuracy and preload with the note that tighter preload narrows allowable mounting error, grease fitting, and the pairing code.
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-HN-P-B-M6 FAQ
Per block: dynamic C 37.4 kN, static C0 55.0 kN, allowable moments MR 0.66, MP 0.67, My 0.67 kN.m. Precision grade running parallelism sits in a 3-21 um band over the rail length range. Rail screws are M8 at 3040 N.cm (steel), 2010 (cast iron) or 1470 (aluminium). The block ships charged with 5.4 cm3 of Mobilux EP2 and takes 1.7 cm3 per top-up, every 100 km or 3 to 6 months.
No. The BK tag means carriage only: one square block, an M6 fitting and nothing to bolt it to. AirTAC marks every LSH rail and carriage with a pairing letter; this one is B, so it mates only with an LSH30 rail of the same letter. If you cannot read the letter off your old part, send us the full code or a photo and we will identify it before you order.
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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-HN-P-B-M6
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