Airtac LRM Miniature Linear Guide LRM12N1X320S10BPT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X320S10BPT 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 lengthStandard carriage
- Carriages1
- Rail length320 mm
- AccuracyP — precision 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 LRM12N1X320S10BPT
LRM12N1X320S10BPT arrives as one ready-to-mount kit rather than loose parts: a 320 mm stainless-steel rail, 12 mm wide, with a single standard-size ball carriage already seated on it and pre-filled with Kyodo Yushi PS No. 2 grease. The trailing T designates bottom fixing, so the screws enter from underneath - useful where the top face of the frame must stay clear of hardware.
Two choices separate this code from its siblings. Accuracy grade P (precision) tightens the manufacturing tolerance over grade H, which earns its keep when the carriage carries a probe, camera or sensor that must return to position repeatably. Preload B holds the internal clearance to a light squeeze, trading a little rolling drag for steadier motion. The carriage runs Japanese-made ISO 3290 G10 balls in a retention design, with a double-lip seal for oil scraping and dust exclusion and an outer cover protecting the seal strip. Keep the ambient at or under 80 C. As with every LRM part, load and moment capacities are absent from the published table - we will confirm them for this model when you send the RFQ.
Airtac LRM Miniature Linear Guide LRM12N1X320S10BPT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X320S10BPT |
|---|---|
| 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 | Standard carriage |
| Carriages supplied | 1 |
| Rail length | 320 mm (spliced sections) |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision 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 LRM12N1X320S10BPT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard 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. |
| P | P — precision 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 LRM12N1X320S10BPT Is Used
Dial-indicator measuring fixture
Precision grade P gives a comparison-measuring stand the consistency a grade H slide cannot guarantee, so repeated indicator readings stay comparable across shifts.
Die-sort pick head
A light-preload carriage on a 320 mm rail carries a small vacuum pick head across a component tray, and the double-lip seal keeps abrasive particles out of the raceway.
Compact laser alignment table
Bottom fixing hides the fasteners inside a small optical breadboard slide, keeping the top plate clear for clamps, posts and optics.
Is the Airtac LRM Miniature Linear Guide LRM12N1X320S10BPT the Right Guide?
When the job is measuring rather than merely moving, accuracy grade is the decision that matters most, and grade P is the tighter of the two LRM offers. Match the rest of the checklist before committing: form (this is a complete set, carriage included), rail width 12 mm, standard carriage length, single carriage, 320 mm rail length, light preload B, bottom-mount fixing. Note the trade-off: preload C runs stiffer but is less forgiving of imperfect mounting surfaces, so B is the sensible pick on milled rather than ground beds. If the load turns out heavy or overhung, move up to AirTAC LSH, which lists dynamic, static and moment ratings per carriage you can size against; for short travel needing crossed-roller rigidity, look at LGC. Either way, confirm the load rating with us for this model - LRM publishes none.
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 LRM12N1X320S10BPT FAQ
You can quote: 12 mm rail width, 320 mm rail length, one standard-length carriage, preload B (light), accuracy P (precision), bottom-mount rail. Screw torques are M2: 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3: 196, 127 and 98 N.cm. Regrease after 100 km of travel or every 3 to 6 months; ambient must stay at or below 80 C with transient peaks no higher than 100 C. Basic dynamic and static load ratings, moment ratings and running parallelism are not published for LRM, so we confirm them per model before an order.
Choose LRM when the envelope is tight and the duty is light precision positioning - here, a 12 mm rail in a 320 mm length. Choose LSH when the load is substantial or cantilevered, because LSH publishes per-carriage dynamic, static and moment ratings you can size against, while LRM's figures must be confirmed per model. If travel is short and crossed-roller rigidity is the priority, LGC is the third option. Send the RFQ with your load sketch and we will advise on the right family.
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 LRM12N1X320S10BPT
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.