Airtac LSH Linear Guide Rail LSH20HN2X310S20AN-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20HN2X310S20AN-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 length310 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 LSH20HN2X310S20AN-M6
The S20 in LSH20HN2X310S20AN-M6 fixes where your drilling starts: the first mounting hole of the 310 mm rail sits 20 mm in from the rail end, which sets the position of stroke-end stops and the layout of the mating plate. What arrives is a complete set - one 310 mm profile rail plus two square standard-length carriages, greased and fitted with M6 nipples. Four rows of balls contact X-shaped 45 degree raceways at a 45 degree contact angle, two points per ball, so the guide carries loads equally in all four directions and shrugs off slight mounting error by self-alignment. The rail is 20 mm wide, matching the size code.
Ratings are per block: 18.6 kN dynamic, 28.6 kN static, moment 0.27 / 0.25 / 0.25 kN.m for MR / MP / My. Static sits roughly 1.5 times above dynamic across this range, but travel life is governed by C, so size on 18.6 kN and treat C0 as the shock and crush check. Before machining, note the shoulder geometry: height 4.3 mm, H1 3.5, H2 5, corner radius maximum 0.5 mm - a larger fillet stops the rail seating on its datum, and how well it seats drives the accuracy you actually get.
Airtac LSH Linear Guide Rail LSH20HN2X310S20AN-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20HN2X310S20AN-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 | Square (compact) |
| Carriage length | Standard carriage |
| Carriages supplied | 2 |
| Rail length | 310 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 LSH20HN2X310S20AN-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. |
| 2X310 | 2 carriages on a 310 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, 310 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 LSH20HN2X310S20AN-M6 Is Used
Router table fence
A workshop-built fence slide uses the 20 mm end-hole offset to place its stop blocks flush against each end of the 310 mm travel.
Adhesive dispensing slide
A nozzle carrier stepping along a 310 mm path across a PCB or gasket holds bead width stable on N-grade parallelism of 12 to 37 um.
Test-fixture shuttle
Swapping PCB pallets between test sockets on a short shuttle; the four-row geometry takes the downward clamp force and the sideways misalign equally.
Is the Airtac LSH Linear Guide Rail LSH20HN2X310S20AN-M6 the Right Guide?
Short rail, two blocks, no preload: this suits compact axes where the carried plate must not rock. If your envelope is tighter still, step down to LRM - slimmer, though its ratings are unpublished, so we confirm them against your duty before you commit. If the load hangs on a lever, moment decides: 0.27 kN.m here rises to 0.35 with the LSH20 long block or 0.44 per LSH25 block. Travel too short to develop a recirculating rhythm, with rigidity the priority, is LGC territory. Match list: set form, size by load and moment, square standard blocks, two per 310 mm rail, N accuracy, preload A, M6 fitting - and a pairing code only matters when you later buy a spare block on its own.
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 LSH20HN2X310S20AN-M6 FAQ
Per block: dynamic C 18.6 kN, static C0 28.6 kN, MR / MP / My moments 0.27 / 0.25 / 0.25 kN.m. Running parallelism, N grade: 12 to 37 um. Rail fixing: M5 screws, 882 N.cm steel, 588 cast iron, 441 aluminium. Shoulders H 4.3 / H1 3.5 / H2 5 mm, corner radius max 0.5 mm. Grease: Mobilux EP2, 1.8 cm3 per block first fill, 0.6 cm3 top-up, every 100 km of travel or 3 to 6 months.
Light (B) and medium (C) preload exist for size 20, but each step narrows what your mounting surface may be out by. At preload A this set accepts 25 um parallelism and 130 um height error between rails at 500 mm spacing; B tightens the height figure to 85 um and C to 50 um, 2.6 times stricter than none. The 20 mm end-hole offset is unaffected - it only locates the first bolt hole in from the rail end, independent of preload grade.
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 Rail LSH20HN2X310S20AN-M6
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