Airtac LRM Miniature Linear Guide LRM12L1X320S10BH
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X320S10BH is a miniature linear guide on a 12 mm stainless-steel rail with recirculating-ball carriage. 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
- Carriages1
- Rail length320 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 LRM Miniature Linear Guide LRM12L1X320S10BH
This LRM12 set carries preload grade B - a light preload - on a 320 mm stainless steel rail, 12 mm wide, with one long recirculating-ball carriage fitted from the top and the first hole 10 mm from each end. Light preload removes the free play of a zero-preload carriage without the running drag of the medium grade, a middle path for positioning stages that must settle without slop. Kyodo Yushi PS No. 2 grease is in the carriage from the factory.
The service clock is distance-based: re-grease every 100 km of travel or every 3 to 6 months, whichever comes first - a 200 mm stroke cycled once per second covers 100 km in around three weeks of continuous running, so on fast cycles the odometer, not the calendar, decides. Inside, Japanese ISO 3290 G10 balls - a grade for the balls alone - run behind double-lip seals under an outer cover strip. Keep ambient temperature at or below 80 C, with brief peaks to 100 C. No load or moment figure is published for LRM; request it through the RFQ and we will confirm for this exact preload B set.
Airtac LRM Miniature Linear Guide LRM12L1X320S10BH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X320S10BH |
|---|---|
| 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 | 1 |
| 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 | B — light 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 LRM12L1X320S10BH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 1X320 | 1 carriage on a 320 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. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 320 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 LRM Miniature Linear Guide LRM12L1X320S10BH Is Used
Fiber alignment adjuster
Fine positioning of a fiber chuck or collimator on a bench setup, where light preload removes drift without making the stage hard to nudge.
Small part transfer slide
A light-duty shuttle carrying small components between an assembly station and a tray, with preload B keeping each stroke repeatable.
Compact jig retrofit
Replacing a worn plain sliding bush in a small drilling or crimping jig, trading the old slack for the light preload this code carries.
Is the Airtac LRM Miniature Linear Guide LRM12L1X320S10BH the Right Guide?
Decide the preload deliberately: A slides free, this B grade trims play with modest drag, and C is the rigid, least forgiving option that demands an accurate mounting face. Around that choice, the rest of the checklist is the set form, 12 mm rail width, 320 mm length, one long carriage, high accuracy H and top-mount fixing. For heavy or overhung loads, change series: LSH publishes per-carriage dynamic, static and moment ratings that LRM does not, while LGC offers crossed-roller rigidity for short travels. Ask us to confirm the load rating for this model, then place the order.
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 LRM12L1X320S10BH FAQ
12 mm wide stainless rail, 320 mm long, one long carriage, preload B (light), accuracy grade H, top-mount fixing and a 10 mm end offset. Tighten M2 screws to 58.8 N.cm or M3 screws to 196 N.cm in steel; use less in cast iron and aluminium. Grease every 100 km of travel or every 3 to 6 months, and hold ambient temperature at or under 80 C. Load and moment ratings are not published for LRM, so we confirm them for this model through your enquiry.
Yes, but plan it: the ball-retention design helps, yet balls can still drop if the carriage is tipped onto the rail or fitted hastily, so a dummy rail is the practical tool for swaps. Replacement carriages are ordered under a carriage-only code with a pairing letter that must match the rail, and only a few such SKUs are carried, so most are an order item. Handle the set on inclines too - an unloaded carriage can slide off under its own weight - and never strike or drop the rail, since damage can be invisible yet still cost accuracy.
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 LRM12L1X320S10BH
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.