Airtac LSH Linear Guide Block LSH25BK-HN-P-D-M6
The AirTAC LSH Linear Guide Block LSH25BK-HN-P-D-M6 is a standard-type profile linear guide on a 23 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
- SizeLSH25
- Rail width23 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 LSH25BK-HN-P-D-M6
One carriage, no rail: this AirTAC LSH25 block is a square (H), standard-length (N) unit on the precision (P) accuracy grade, greased through an M6 nipple and catalogued under pairing code D. Precision grade tightens running parallelism to a band of 3-21 um over the rail length, the tightest of the three LSH grades. Four rows of balls bear on X-shaped 45 degree arc raceways with two contact points each, which spreads load equally in all four directions and lets the block absorb slight mounting-surface error rather than jamming.
Rated figures per block: 26.9 kN dynamic, 39.4 kN static, and allowable moments of MR 0.44, MP 0.38 and My 0.38 kN.m. For a cantilevered camera or sensor head, the moment column is usually the one that decides, not C. The rail it pairs with is 23 mm wide - the size 25 code is not the width - so check the shoulder geometry of your existing rail before ordering against pairing D.
Airtac LSH Linear Guide Block LSH25BK-HN-P-D-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Block LSH25BK-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 | LSH25 |
| Rail width | 23 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 | 26.9 kN per carriage |
|---|---|
| Basic static load rating C0 | 39.4 kN per carriage |
| Allowable static moment | MR 0.44 / MP 0.38 / My 0.38 kN·m |
| Accuracy grade | P — precision grade |
| Mounting screws | M6 — 1370 N·cm into steel, 921 cast iron, 686 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 LSH25BK-HN-P-D-M6
| LSH | LSH Series Linear Guide. |
|---|---|
| 25 | Size code — note the rail is 23 mm wide, not 25 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 LSH25BK-HN-P-D-M6 Is Used
Die-sort handler pick arm
The pick arm of a semiconductor die-sorting handler rides a size 25 rail; the precision grade keeps the 3-21 um parallelism band that pickup accuracy demands.
Press brake guard door slide
A sliding safety guard on a fabrication-shop press brake runs on one block; the 39.4 kN static rating is the margin if the door is slammed or someone leans a load against it.
Probe inspection fixture
A small CMM-style fixture carries a touch probe over a 600 mm rail; the moment ratings of 0.44 kN.m pitch and 0.38 kN.m roll and yaw decide whether the probe overhang passes, not the load rating alone.
Is the Airtac LSH Linear Guide Block LSH25BK-HN-P-D-M6 the Right Guide?
Match the part to the job in this order. Downsize to LRM when the duty is light and space is scarce - its ratings are unpublished, so we verify them against your cycle first. Upsize one step, or move to a long carriage, when moment governs: one size up on LSH lifts pitch moment by roughly 63 percent for a single part, more than a second carriage buys against tipping along the travel. Choose LGC instead when travel is short and crossed-roller stiffness beats recirculating smoothness. Your checklist for this line: carriage only (no rail), size 25, square standard-length block, precision grade, pairing D, M6 fitting. Precision accuracy also demands a mounting surface built to match - confirm your machine can hold that geometry before you order.
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 LSH25BK-HN-P-D-M6 FAQ
Dynamic rating 26.9 kN (C); static 39.4 kN (C0); allowable moments MR 0.44, MP 0.38, My 0.38 kN.m; precision-grade parallelism band 3-21 um across the rail length; M6 rail screws at 1370 / 921 / 686 N.cm for steel / cast iron / aluminium; lubrication 3.6 cm3 first charge and 1.1 cm3 top-ups, refreshed every 100 km or 3-6 months.
One square size 25 carriage, standard length, precision grade, with an M6 grease nipple. No rail, no end caps, no mounting screws. The pairing letter D ties this block to an LSH25RLX rail carrying the same letter; rails and carriages must share the code, so read it off your existing rail before ordering a replacement.
Authorized Export Seller
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 LSH25BK-HN-P-D-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.