Airtac LRM Miniature Linear Guide LRM12L2X320S10AH
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X320S10AH is a miniature linear guide on a 12 mm stainless-steel rail with recirculating-ball carriages. It is the small end of the range, for light-duty precision positioning in a tight envelope — compact stages, small pick-and-place heads and inspection fixtures.
- SeriesLRM
- Supplied asComplete guide set
- SizeLRM12
- Rail width12 mm
- Carriage lengthLong carriage
- Carriages2
- Rail length320 mm
- AccuracyH — high 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 LRM Miniature Linear Guide LRM12L2X320S10AH
This SKU is the complete-guide version of the LRM12 range: a 12 mm stainless rail machined to 320 mm, with a pair of long carriages fitted and ready to travel. Top-mount fixing means the screws pass down through the rail into the base from above, and the set ships as one assembled, pre-greased unit.
Preload A leaves the internal clearance exactly as manufactured - nothing is removed, so sliding effort is at its lowest and the block glides freely under hand pressure, a natural pick for fixtures an operator positions by touch. The long block body spreads contact across more balls and lengthens the bearing span, which steadies any tipping component riding on it. Ball retention keeps the ISO 3290 G10 Japanese balls captive during handling, though the manufacturer is clear that angling the carriage onto the rail can still shed them - swap slowly and consider a dummy rail. Keep the surroundings at or below 80 C. No load table exists for LRM, so capacity is confirmed model by model - send this code on an RFQ and we will return the figure.
Airtac LRM Miniature Linear Guide LRM12L2X320S10AH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X320S10AH |
|---|---|
| Series | LRM Series Miniature Linear Guide |
| Supplied as | Complete guide set |
| Construction | Recirculating ball, stainless-steel rail, common-rail design |
| Size code | LRM12 |
| Rail width | 12 mm |
| Carriage length | Long carriage |
| Carriages supplied | 2 |
| Rail length | 320 mm |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | H — high grade |
| Preload grade | A — no preload |
| Mounting screws | M2 or M3 rail screws depending on size |
| Lubrication | Pre-filled with Kyodo Yushi PS No. 2; top up through the rear lubrication hole |
| Ambient temperature | Up to 80 °C ambient, 100 °C transient peak |
| Interchangeability | LRM carriages fit LRM rails of the same model |
Specifications follow the official AirTAC LRM catalogue. The catalogue does not publish load or moment ratings, running parallelism, speed limits, or carriage base material for LRM. We will not quote a figure we cannot source — ask us and we will confirm it for your model.
Model Code: Airtac LRM Miniature Linear Guide LRM12L2X320S10AH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X320 | 2 carriages on a 320 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. |
| H | H — high grade. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 320 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 LRM Miniature Linear Guide LRM12L2X320S10AH Is Used
Optical alignment bench
Truing a mirror or sensor on a small optical bench by hand. Preload A glides with minimal finger force, so fine alignment feels direct rather than notchy.
Benchtop XY stage build
A two-axis stage for a custom OEM machine or lab rig: 12 mm rails under 320 mm keep the envelope tight, and the common-rail profile lets standard or long carriages share the same rail later.
Camera focus axis
A machine-vision camera sliding to refocus across working distances; the long carriage extends the bearing span and keeps the camera from nodding at the end of travel.
Is the Airtac LRM Miniature Linear Guide LRM12L2X320S10AH the Right Guide?
Size 12 is the heart of the stocked LRM range - 924 of the 988 sets we hold are LRM12 - so this configuration ships faster than nearly any other in the family. Preload A gives the freest roll but the most residual clearance; if the application cannot tolerate play, drop to B or C and prepare the mounting face accordingly. When the load is substantial or hangs off the carriage, step up to LSH, which publishes per-carriage dynamic, static and moment ratings you can design against - LRM does not. Short travel with a demand for crossed-roller rigidity points to LGC instead. Checklist before ordering: set form, 12 mm rail, long blocks, count 2, 320 mm rail, preload A, accuracy H, top-mount, a confirmed load rating from us, and the pairing letter shared with the rail if a spare carriage is ever sourced.
Quick checklist
- ✓ Complete set, carriage only, or rail only?
- ✓ Load and moment confirmed with us
- ✓ 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 LRM Miniature Linear Guide LRM12L2X320S10AH FAQ
One assembled set: a 320 mm stainless rail, 12 mm wide, with two long carriages fitted and pre-filled with Kyodo Yushi PS No. 2 grease. Configuration: preload A (none), accuracy H (high), top-mount fixing. Mount with M3 screws at 196 N.cm into steel, 127 into cast iron, 98 into aluminium (M2: 58.8 / 39.2 / 29.4 N.cm). Ambient temperature must not exceed 80 C. Re-grease every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM; we confirm the figures for this model via RFQ.
A full guide. The X segment in the code marks a complete set: rail and carriages ship together as one assembled unit, 320 mm long with two long blocks and top-mount fixing, needing only screws and a prepared surface to run. If you ever need a spare carriage, remember that BK carriage-only codes must share the pairing letter of the rail, and our carriage-only stock is thin - most replacements are special orders.
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 LRM Miniature Linear Guide LRM12L2X320S10AH
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours. We can also confirm the load and moment rating for this model.