Airtac LRM Miniature Linear Guide LRM12N2X184S17BP
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X184S17BP 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 lengthStandard carriage
- Carriages2
- Rail length184 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 LRM12N2X184S17BP
Where the standard build runs free, the LRM12N2X184S17BP is the tightened-up version of the same 12 mm, 184 mm axis: two standard-length carriages on one stainless rail, light preload (code B) and precision accuracy (code P). Preload B removes the internal play, so repeatability improves and any tipping motion feels firmer - the trade-off is higher drag and a mounting surface that must be flatter, ground or finish-milled, because a preloaded block punishes an uneven base.
Inside, the series hardware is unchanged: a rail profile shared across LRM12 carriages, retained balls, ISO 3290 G10 Japanese balls chosen for roundness and wear, a double-lip seal working the raceway and an outer cover keeping debris off the seal strip. Ambient temperature stays at or below 80 C with peaks no higher than 100 C. Precision grade P earns its keep on measuring and alignment duties where runout between passes is the enemy. As with every LRM code, dynamic and moment ratings are not published; tell us the application and we will confirm the rating for this exact model before the order goes in.
Airtac LRM Miniature Linear Guide LRM12N2X184S17BP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X184S17BP |
|---|---|
| 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 | 2 |
| Rail length | 184 mm |
| 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 LRM12N2X184S17BP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X184 | 2 carriages on a 184 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, 184 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 LRM12N2X184S17BP Is Used
Small CMM-style gauge fixture
A shop-floor checking fixture that probes machined bushings uses precision grade P and light preload so the probe returns to the same point on every pass.
Fiber-optic coupler alignment stage
Preloaded travel without play lets a technician lock a coupler position knowing the carriage will not drift between adjustment and lock-down.
Precision glue-dot dispensing module
On a camera-module assembly line, repeatable dot placement depends on an axis with no play; preload B and grade P target exactly that.
Is the Airtac LRM Miniature Linear Guide LRM12N2X184S17BP the Right Guide?
Choose this code over the preload-free equivalent when the axis must not wobble - metrology fixtures, optical alignment, repeatable dispensing. If the job outgrows a miniature guide, move to LSH: it publishes per-carriage dynamic, static and moment ratings you can size from, while LRM publishes none and leaves the sizing to us. For short travels where crossed-roller rigidity matters more than stroke, LGC sits alongside in the range. Run the checklist: set versus carriage only, 12 mm width, standard block, two blocks, 184 mm rail, preload B against A or C - C is the most rigid and the least forgiving of mounting errors - accuracy P or H, top- or bottom-mount fixing, and the load figure confirmed with us by RFQ.
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 LRM12N2X184S17BP FAQ
A 12 mm wide stainless rail, 184 mm long, two standard carriages, light preload (code B), precision accuracy (code P), top-mount rail fixing and a 17 mm end-hole offset. M2 screws torque to 58.8 N.cm in steel, 39.2 N.cm in cast iron and 29.4 N.cm in aluminium; M3 screws to 196, 127 and 98 N.cm. Re-grease every 100 km of travel or every 3 to 6 months; ambient limit 80 C, peaks 100 C. Load and moment ratings are not published by the manufacturer - we confirm them per model on request.
Preload B removes internal play for firmer, more repeatable motion, and grade P tightens travel accuracy - both help where the axis must return identically, at the cost of more drag and a stricter mounting surface. The box contains the complete set: the 184 mm rail with both preloaded carriages fitted and greased, no separate spare block. Carriage spares are thin on the ground - only four carriage-only SKUs are stocked - so plan any replacement with us early.
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 LRM12N2X184S17BP
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.