Airtac LSH Linear Guide Rail LSH15BK-F1N-P-B-M4
The AirTAC Airtac LSH Linear Guide Rail LSH15BK-F1N-P-B-M4 is a standard-type profile linear guide on a 15 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
- SizeLSH15
- Rail width15 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 Rail LSH15BK-F1N-P-B-M4
This SKU is the carriage on its own: one AirTAC LSH15 F1 top-flange block, standard length, precision accuracy, with an M4 grease nipple, listed under pairing code B. There is no rail in the box. The block carries four rows of recirculating balls seated in X-shaped arc grooves cut at 45 degrees, each ball touching at two points, so it carries load equally up, down and sideways and irons out slight flatness or alignment faults in the base it is bolted to. Size 15 here means a true rail width of 15 mm.
Per block the catalogue figures are 11.3 kN dynamic, 17.9 kN static and 0.12 kN.m for each of the MR, MP and My moments. For a maintenance buyer the arithmetic is simple: a replacement carriage runs at roughly a quarter of the price of a full rail-and-carriage set, so if the rail run is clean and unmarked, swapping the block is the cheap repair. The P grade only shows on the finished axis if the rail it rides is also precision grade.
Airtac LSH Linear Guide Rail LSH15BK-F1N-P-B-M4 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH15BK-F1N-P-B-M4 |
|---|---|
| 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 | LSH15 |
| Rail width | 15 mm |
| Carriage style | Flange, top mounting |
| Carriage length | Standard carriage |
| Basic dynamic load rating C | 11.3 kN per carriage |
|---|---|
| Basic static load rating C0 | 17.9 kN per carriage |
| Allowable static moment | MR 0.12 / MP 0.12 / My 0.12 kN·m |
| Accuracy grade | P — precision grade |
| Mounting screws | M4 — 412 N·cm into steel, 274 cast iron, 206 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 Rail LSH15BK-F1N-P-B-M4
| LSH | LSH Series Linear Guide. |
|---|---|
| 15 | 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 Rail LSH15BK-F1N-P-B-M4 Is Used
Router table Y-axis block swap
A benchtop CNC router's Y-axis starts to notch on reversal. Unbolt the worn block, ease the new F1 flange carriage onto the cleaned rail, torque the M4 plate screws and the axis runs true again without buying a new rail.
Pick-and-place head rebuild
A desktop SMT gantry's Z-slide block has developed flat spots after years of 40 mm cycling. Replacing just the block restores the smooth travel the vision system depends on, at a fraction of the cost of a full set.
Label applicator slide service
The dispensing slide on a labelling machine begins to stick under side load. A fresh standard-length F1 block on the existing rail returns the slide to free travel; charge it with 0.9 cm3 of grease before the first run.
Is the Airtac LSH Linear Guide Rail LSH15BK-F1N-P-B-M4 the Right Guide?
Start by confirming the form: this is a carriage only, so it suits a repair or a build where the rail is already specified. Then size by moment as well as load - on this standard-length block the moments are all 0.12 kN.m, so a cantilevered head can outgrow that figure long before the 11.3 kN does; a long block or a one-size step to LSH20, whose standard block lifts MR to 0.27 kN.m, buys more moment than adding a second block, which instead addresses tipping along the rail. If the duty is light and the envelope tight, AirTAC's LRM family shrinks the footprint, though its load ratings are not published, so we confirm them against your duty before quoting. For short-stroke work that wants crossed-roller stiffness rather than long recirculating travel, LGC is the better cross-over.
Before ordering, tick off: carriage form and style (F1 top flange here), block length, number of blocks per rail, rail length and end-hole offset, accuracy grade matched on both parts, the preload grade of the mating rail - tighter preload cuts the allowable installation error, on this size from 130 um of height error with no preload to 35 um at medium - the grease fitting, and above all the pairing code letter, which must be B to match the rail you already hold.
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 Rail LSH15BK-F1N-P-B-M4 FAQ
Dynamic rating C 11.3 kN and static C0 17.9 kN per carriage; moments MR 0.12, MP 0.12 and My 0.12 kN.m; precision-grade running parallelism in the 3-21 um band; rail fixing M4 screws at 412 N.cm on steel, 274 N.cm on cast iron, 206 N.cm on aluminium; Mobilux EP2 or equivalent, first charge 0.9 cm3 and top-up 0.3 cm3, renewed every 100 km of travel or every 3 to 6 months.
No rail is included - this listing is the carriage only. The letter at the end of the code is the pairing mark: an LSH15 carriage marked B must ride an LSH15 rail marked B. LSH blocks are interchangeable across LSH rails of the same model, so any B-marked rail keeps this block's smoothness, preload and accuracy. Read the code off the end of your old rail or the side of the old block before ordering.
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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 Rail LSH15BK-F1N-P-B-M4
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