Airtac LSH Linear Guide Rail LSH20F2N2X1120S20AN-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20F2N2X1120S20AN-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 asComplete guide set
- SizeLSH20
- Rail width20 mm
- Carriage lengthStandard carriage
- Carriages2
- Rail length1120 mm
- AccuracyN — normal grade
- PreloadA — no 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 LSH20F2N2X1120S20AN-M6
Two F2 bottom-flange carriages ride this 1120 mm LSH20 rail in set LSH20F2N2X1120S20AN-M6, cut with a 20 mm end-hole offset, without preload, at normal N accuracy, each block fitted with an M6 nipple. The pair is the point: two blocks spaced along one rail resist tipping and racking far better than one, and they share the carried weight between them. Mounting is from below through the flange, leaving the carriage tops free. You receive the rail, both carriages and the bolt caps. Four rows of 45 degree X-raceway balls give equal capacity in every direction plus self-alignment for slight seat errors; size 20 carries a true 20 mm wide rail.
Each block is rated 18.6 kN dynamic C, 28.6 kN static C0 and 0.27/0.25/0.25 kN.m MR/MP/My. Because two blocks share the duty, the assembly handles heavier or overhung fixtures than a single block of the same size, and spacing them wide multiplies the resistance to racking about the travel axis. The 1120 mm rail uses under a third of the 4040 mm maximum length for size 20. Lubrication scheduling matters on fast machines: a 300 mm stroke cycling once per second reaches the 100 km re-grease mark in well under a month of normal running, so set the service interval by distance, not by the calendar.
Airtac LSH Linear Guide Rail LSH20F2N2X1120S20AN-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20F2N2X1120S20AN-M6 |
|---|---|
| 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 | LSH20 |
| Rail width | 20 mm |
| Carriage style | Flange, bottom mounting |
| Carriage length | Standard carriage |
| Carriages supplied | 2 |
| Rail length | 1120 mm |
| 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 | N — normal grade |
| Preload grade | A — no preload |
| 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 |
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 LSH20F2N2X1120S20AN-M6
| LSH | LSH Series Linear Guide. |
|---|---|
| 20 | Size code. |
| H / F1 / F2 / F3 | Carriage style: square, or flange mounted from the top, bottom, or both. |
| N | Standard carriage. |
| 2X1120 | 2 carriages on a 1120 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| A | A — no 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, 1120 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 LSH20F2N2X1120S20AN-M6 Is Used
CNC guard door slide
A sliding guard door on a vertical machining centre hangs from the two F2 blocks; spacing them along the 1120 mm rail stops a heavy sheet-steel door from racking in its frame.
EV battery module torque-test fixture
The test head sits between the two carriages on a fixture base, and the pair of blocks takes the reaction moment as the module bolts are run down, each block good for 0.27 kN.m MR.
SMT pallet return shuttle
A shuttle ferrying empty pallets back under a placement line rides on the twin bottom-flange blocks, keeping the load path low and the deck top unobstructed for pallet sensors.
Is the Airtac LSH Linear Guide Rail LSH20F2N2X1120S20AN-M6 the Right Guide?
If moment about the pitch or yaw axis decides the job, two spaced blocks are the economical answer - a long LSH20 carriage raises MR only from 0.27 to 0.35 kN.m, roughly 30 percent, while a second block adds racking stiffness for a similar outlay. For light duty in a tight envelope, look at LRM, whose load ratings are not published and which we confirm case by case; for short travel needing crossed-roller stiffness, look at LGC. Stay on LSH20 when travel is long, load is moderate and a recirculating ball guide at 18.6 kN C is enough. Checklist: form - this code is a set with rail and two carriages; size chosen on load AND moment; F2 bottom-flange style; two blocks; 1120 mm rail; N accuracy with no preload, which allows 130 um height error at 500 mm spacing; M6 fittings; and, for spare parts, the pairing code linking carriage to rail.
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 LSH20F2N2X1120S20AN-M6 FAQ
For each of the two standard carriages: dynamic load C 18.6 kN, static C0 28.6 kN, and moment limits MR 0.27 / MP 0.25 / My 0.25 kN.m. The N accuracy grade delivers 12-37 um running parallelism across its length band. Fixing: M5 rail screws at 882 N.cm into steel, 588 into cast iron, 441 into aluminium. Lubrication: 1.8 cm3 first charge and 0.6 cm3 top-up of Mobilux EP2 per block, re-applied at 100 km of travel or every 3 to 6 months, whichever comes first.
With preload A the guide allows 25 um of parallelism error and 130 um of height error between rails measured at 500 mm spacing, proportional to actual spacing. Choosing preload B would cut those to 20 um and 85 um - rigidity costs installation latitude. Within the limits, self-alignment inside the carriage absorbs the error; beyond them the guide binds. Also keep the mounting-surface corner radius at or below 0.5 mm for size 20, and drive the supplied bolt caps fully into the rail holes, seated flush, so swarf cannot reach the ball circuit.
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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 LSH20F2N2X1120S20AN-M6
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