Airtac LSH Linear Guide Rail LSH20HN1X760S20BH-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20HN1X760S20BH-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
- Carriages1
- Rail length760 mm
- AccuracyH — high grade
- PreloadB — light 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 LSH20HN1X760S20BH-M6
Preload is the difference on this code: the B in the suffix orders a light-preload fit between balls and raceways, removing most of the running play while keeping drag low. You get one standard-length square carriage on a 760 mm rail, grade H accuracy, an M6 grease fitting and a rail that is 20 mm wide. The same four-row, 45 degree X-raceway geometry as every LSH guide gives equal capacity in all four directions and lets the carriage absorb slight mounting error internally.
Rigidity is not free: at light preload the allowable height error between rails drops from 130 um (no preload) to 85 um at 500 mm spacing, and the parallelism window from 25 to 20 um. In exchange the carriage resists vibration and lift-off far better, which is what a positioning axis needs. Load ratings are unchanged by preload: C 18.6 kN, C0 28.6 kN and moments of 0.27 / 0.25 / 0.25 kN.m per carriage.
Airtac LSH Linear Guide Rail LSH20HN1X760S20BH-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20HN1X760S20BH-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 | 1 |
| Rail length | 760 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 | H — high grade |
| Preload grade | B — light 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 LSH20HN1X760S20BH-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. |
| 1X760 | 1 carriage on a 760 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| B | B — light preload — higher preload raises rigidity and tightens how flat the mounting surface must be. |
| H | H — high 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, 760 mm |
| Carriage | Yes, 1 |
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 LSH20HN1X760S20BH-M6 Is Used
Optical inspection stage
An inspection camera stage that must return to the same XY position after each part change benefits from the light preload - removed play stops the drift that plain-fit carriages show after thermal cycling.
Dispensing valve slide
A fluid-dispensing head indexing between two nozzles on a PCB line holds its commanded position better with a preloaded carriage, because ball play would otherwise surface as dot-placement error.
Profile measuring table
Quality benches that slide extruded profiles past a dial or laser gauge need repeatable carriage travel; grade H parallelism of 7-28 um keeps the gauge reading honest stroke after stroke.
Is the Airtac LSH Linear Guide Rail LSH20HN1X760S20BH-M6 the Right Guide?
Order this code when an axis chatters, rocks or loses positioning repeatability on an unloaded-fit guide - light preload is the standard fix that avoids the machining discipline of a medium preload. Match by form (this is a complete set), then size on load and moment together. If overturning governs, a long carriage raises MR to 0.35 kN.m against 0.27 here, and stepping up to LSH25 reaches 0.44 kN.m - note that the LSH25 rail is actually 23 mm wide, not 25, so allow for that in the layout. Need more stiffness still? Medium preload C exists, but it demands height error within 50 um at 500 mm spacing. For very light duty in a tight envelope check LRM (ratings not published; we confirm by RFQ), and for short-stroke crossed-roller stiffness check LGC. The grease fitting on this code is M6, the size 20 family standard.
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 LSH20HN1X760S20BH-M6 FAQ
Dynamic C 18.6 kN, static C0 28.6 kN, allowable moments MR 0.27 / MP 0.25 / My 0.25 kN.m per carriage. Grade H running parallelism 7-28 um. Mount with M5 screws torqued to 882 N.cm (steel), 588 N.cm (cast iron) or 441 N.cm (aluminium). First grease charge is about 1.8 cm3 of Mobilux EP2 per carriage, top-up 0.6 cm3, repeated every 100 km of travel or every 3 to 6 months.
The box holds one 760 mm grade H rail and one square carriage, assembled and pre-greased with light (B) preload - a complete set, no separate carriage purchase needed. Preload does narrow the installation window: 20 um parallelism and 85 um height error allowed between rails at 500 mm spacing, versus 25 and 130 um on an unloaded set, scaling with actual spacing. Machine the datum faces to suit, or order code A instead.
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 LSH20HN1X760S20BH-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.