Airtac LSH Linear Guide Block LSH20BK-HN-P-D-M6
The AirTAC LSH Linear Guide Block LSH20BK-HN-P-D-M6 is a standard-type profile linear guide on a 20 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
- SizeLSH20
- Rail width20 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 LSH20BK-HN-P-D-M6
This code buys the carriage alone: one precision-grade, square, standard-length block for an AirTAC LSH20 linear guide. No rail is included and none is implied - it mates only with an LSH20 rail whose pairing code is D. Inside, four rows of recirculating balls run at a 45 degree contact angle in X-shaped arc raceways, two-point contact per ball, so the block carries equal load up, down and sideways and its self-aligning geometry absorbs slight mounting-surface error instead of binding. Size 20 here means a rail 20 mm wide.
Per block the catalogue lists C 18.6 kN dynamic, C0 28.6 kN static, and static moments MR 0.27, MP 0.25 and My 0.25 kN.m. Precision grade holds running parallelism to a 3-21 um band, the tightest LSH20 offering, which is why this block suits measuring and optical positions. It arrives pre-filled with Mobilux EP2 and takes an M6 nipple, so a swap onto a sound, unscored rail is a bolt-on job rather than a re-machine.
Airtac LSH Linear Guide Block LSH20BK-HN-P-D-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Block LSH20BK-HN-P-D-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 | LSH20 |
| Rail width | 20 mm |
| Carriage style | Square (compact) |
| Carriage length | Standard carriage |
| Basic dynamic load rating C | 18.6 kN per carriage |
|---|---|
| Basic static load rating C0 | 28.6 kN per carriage |
| Allowable static moment | MR 0.27 / MP 0.25 / My 0.25 kN·m |
| Accuracy grade | P — precision grade |
| Mounting screws | M5 — 882 N·cm into steel, 588 cast iron, 441 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 LSH20BK-HN-P-D-M6
| LSH | LSH Series Linear Guide. |
|---|---|
| 20 | 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. |
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 LSH20BK-HN-P-D-M6 Is Used
CNC router Y-axis swap
A desktop CNC router gantry whose original square block has gone notchy can be revived with this precision-grade block, provided the 20 mm rail is still true and the pairing code is D.
Laboratory inspection stage
A coordinate or optical inspection stage being rebuilt for repeatable positioning benefits from the 3-21 um precision-grade parallelism band this block offers on its D-coded rail.
Blister-line dosing slide
Converting a pharmaceutical blister machine's dosing slide from normal to precision grade smooths the short dosing stroke without touching the rail or the machine frame.
Is the Airtac LSH Linear Guide Block LSH20BK-HN-P-D-M6 the Right Guide?
Start by reading the pairing code off the old block or the end of the rail: carriage and rail must both be D or the replacement will not run true. Then size by load AND moment. For cantilevered loads the moment rating usually decides - a long LSH20L block lifts MR from 0.27 to 0.35 kN.m, about 30 percent, and stepping to LSH25N lifts it to 0.44 kN.m, about 63 percent, for one part. If the duty is light and the envelope tight, step down to LRM, whose load ratings are not published, so we confirm them on RFQ; for short travel needing crossed-roller rigidity rather than long recirculating travel, step across to LGC.
Match checklist: form is carriage only - no rail in the box; size by dynamic and static load plus moment; square, standard length; precision accuracy; M6 grease fitting from the M6 family that covers sizes 20 to 35; and pairing code D if this is a replacement.
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 LSH20BK-HN-P-D-M6 FAQ
Per standard-length LSH20 block: dynamic rating C 18.6 kN, static rating C0 28.6 kN, static moments MR 0.27 / MP 0.25 / My 0.25 kN.m. Precision-grade running parallelism: 3-21 um depending on rail length. Mating rail screws: M5 at 882 / 588 / 441 N.cm in steel / cast iron / aluminium. Grease: 1.8 cm3 first charge, 0.6 cm3 top-up, refreshed every 100 km of travel or every 3-6 months.
No. This SKU is the carriage only - no rail, no preload setting and no mounting screws ship with it. The pairing code D is the factory match between one specific rail and one specific block: an LSH20 rail and carriage must share the code to keep their designed fit. LSH carriages are interchangeable across LSH rails of the same model, so any D-coded LSH20 rail will run with this block, but a rail of another code or another brand will not.
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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 LSH20BK-HN-P-D-M6
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