Airtac LSH Linear Guide Rail LSH15HN2X700S20CN-M4
The AirTAC Airtac LSH Linear Guide Rail LSH15HN2X700S20CN-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 asComplete guide set
- SizeLSH15
- Rail width15 mm
- Carriage lengthStandard carriage
- Carriages2
- Rail length700 mm
- AccuracyN — normal grade
- PreloadC — medium preload
- 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 LSH15HN2X700S20CN-M4
LSH15HN2X700S20CN-M4 is a complete AirTAC LSH linear guide assembly built around one 700 mm hardened profile rail of size 15 - true rail width 15 mm - carrying two square LSH15H carriages of standard length. Each carriage recirculates balls through four rows of X-arranged raceways cut at 45 degrees, giving equal capacity upward, downward and sideways and letting slight mounting-surface error be absorbed inside the carriage rather than forcing the guide into a bind. The box holds the rail, two carriages, mounting screws and the plastic bolt caps for the rail holes.
Grade C preload removes the internal clearance of the ball circuit, which is what makes this set stiffer under reversing loads and vibration. That stiffness has a price on the bench: at 500 mm rail spacing the allowable height error between the two mounting faces drops from 130 um with no preload to 35 um here, roughly 3.7 times tighter, and the parallelism allowance falls from 25 um to 13 um. Per carriage the catalogue lists 11.3 kN basic dynamic load, 17.9 kN basic static load and 0.12 kN.m in each moment direction; the second carriage shares the duty and stops the assembly tipping as it travels the 700 mm rail.
Airtac LSH Linear Guide Rail LSH15HN2X700S20CN-M4 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH15HN2X700S20CN-M4 |
|---|---|
| Series | LSH Series Linear Guide |
| Supplied as | Complete guide set |
| 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 | Square (compact) |
| Carriage length | Standard carriage |
| Carriages supplied | 2 |
| Rail length | 700 mm |
| 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 | N — normal grade |
| Preload grade | C — medium preload |
| 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 |
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.
Model Code: Airtac LSH Linear Guide Rail LSH15HN2X700S20CN-M4
| LSH | LSH Series Linear Guide. |
|---|---|
| 15 | Size code. |
| H / F1 / F2 / F3 | Carriage style: square, or flange mounted from the top, bottom, or both. |
| N | Standard carriage. |
| 2X700 | 2 carriages on a 700 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| C | C — medium preload — higher preload raises rigidity and tightens how flat the mounting surface must be. |
| N | N — normal grade. |
| -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 | Complete guide set |
|---|---|
| Rail | Yes, 700 mm |
| Carriage | Yes, 2 |
Rail and carriage(s) supplied together, matched as a set. 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 LSH15HN2X700S20CN-M4 Is Used
Micro-milling slide
A benchtop CNC micro-milling machine carrying its spindle head along a 700 mm axis benefits from C preload: the clearance-free ball circuit resists chatter as the cutter enters the workpiece, provided the base is machined flat enough for the 35 um height limit.
Coordinate measuring stage
On a small coordinate measuring machine, the 13 um parallelism allowance of a preloaded size 15 guide keeps the probe path straight along the 700 mm measuring axis, so readings stay repeatable between calibration visits.
Optical inspection gantry
A camera head on a PCB inspection gantry sees no load-direction bias here: the four-row 45 degree geometry carries the overhung camera equally in lift, dive and side thrust, and the two blocks stop the head yawing mid-travel.
Is the Airtac LSH Linear Guide Rail LSH15HN2X700S20CN-M4 the Right Guide?
Size the duty by moment first, then load. If this package is too big for the job, AirTAC LRM runs in a smaller envelope, but its load ratings are not published, so we confirm them against your cycle before you commit. If 11.3 kN dynamic or 0.12 kN.m moment per carriage is marginal, step up to a long LSH15 carriage or to LSH20 rather than adding a third block; if travel is short and the job needs crossed-roller rigidity instead of long recirculating travel, LGC is the cross-over choice. Before ordering, tick the checklist: form (complete set), size by load and moment, carriage style and length, block count and rail length, accuracy grade, preload with its installation trade-off, grease fitting (M4 family on size 15), and the 20 mm end-hole offset.
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 LSH15HN2X700S20CN-M4 FAQ
Each standard-length LSH15 carriage is rated 11.3 kN basic dynamic (C) and 17.9 kN basic static (C0), with allowable static moments of MR 0.12, MP 0.12 and My 0.12 kN.m. Running parallelism for N-grade accuracy is 12-37 um across the rail-length bands. Mount with M4 screws at 412 N.cm in steel, 274 N.cm in cast iron, 206 N.cm in aluminium. Grease per carriage: 0.9 cm3 first charge, 0.3 cm3 top-up, renewed every 100 km of travel or every 3 to 6 months, whichever comes first.
It cuts your tolerance budget. With grade C preload this set allows a height error S of only 35 um between rails at 500 mm spacing, against 130 um for the same guide without preload, and parallelism P tightens from 25 um to 13 um. The benefit is a stiffer, clearance-free guide; the cost is machined rather than merely cleaned mounting faces, plus correct torque on every M4 screw so the rail is pulled flat against its datum.
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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 LSH15HN2X700S20CN-M4
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