Airtac LSH Linear Guide Block LSH25BK-HN-P-E-M6
The AirTAC Airtac LSH Linear Guide Block LSH25BK-HN-P-E-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-E-M6
This is a straight replacement block for an LSH25 guide: square (H) carriage, standard length (N), precision (P) accuracy, M6 grease fitting, pairing code E. The rail is not part of the deal - a carriage-only code never includes one. If your machine already runs an LSH25 rail graded E, this block bolts straight onto it; AirTAC machines carriages so any block of a given model fits any rail of that model and keeps its smoothness, preload and accuracy. Four rows of recirculating balls ride X-shaped 45 degree arc raceways, two contact points per ball, giving equal capacity in every direction.
A carriage-only purchase costs roughly a quarter of a complete set, which is why swapping the block is usually the economic repair when the rail is still sound. The figures that matter: 26.9 kN dynamic and 39.4 kN static per block, moments MR 0.44, MP 0.38 and My 0.38 kN.m, and a precision-grade parallelism band of 3-21 um over the rail length.
Airtac LSH Linear Guide Block LSH25BK-HN-P-E-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Block LSH25BK-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 | 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 stocked 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-E-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-E-M6 Is Used
CNC router Y-axis service
A light-industrial CNC router's Y-axis block develops brinelling after years of duty; swapping in this pairing-E block is a short job against the still-sound rail.
Tray-sealer head carriage
The sealing head carriage on a food-packaging tray sealer wears fastest of any axis; a block-only swap brings the line back without disturbing rail alignment.
MRO spares shelf
Maintenance teams hold one spare block per pairing code; at roughly a quarter of a set price, four spares still cost less than one spare complete guide.
Is the Airtac LSH Linear Guide Block LSH25BK-HN-P-E-M6 the Right Guide?
Before anything else, read the pairing letter off the rail or the old block - E here - because an LSH carriage runs only on an LSH rail carrying the same code; nothing here implies a fit to another maker's rail. Then check duty: if the load has outgrown this size, a long carriage or one size up raises pitch moment faster than adding a block beside it; if the duty is light and the envelope small, ask us about LRM, whose load ratings we confirm from the datasheet; if the travel is short and you want crossed-roller rigidity, LGC is the alternative. Tick off: carriage-only form, size 25, square standard block, precision accuracy, M6 nipple, and the pairing code itself.
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-E-M6 FAQ
The size 25 standard carriage is rated 26.9 kN dynamic and 39.4 kN static, with moments of 0.44 kN.m in pitch and 0.38 kN.m in roll and yaw. Precision grade gives a 3-21 um parallelism band over the rail length. The rail bolts down with M6 screws at up to 1370 N.cm in steel; grease holds are 3.6 cm3 first charge and 1.1 cm3 top-up on a 100 km or 3-6 month cycle.
It is a carriage only - there is no rail in the box. It runs only on an LSH25 rail carrying the same pairing letter, E in this code. Within LSH, any carriage of a model fits any rail of that model and keeps its smoothness, preload and accuracy; that statement does not extend to other brands or series. If the E code is unreadable, quote the machine and we will confirm.
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-E-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.