Airtac LRM Miniature Linear Guide LRM12L2X245S10BPT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X245S10BPT 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 length245 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 LRM12L2X245S10BPT
LRM12L2X245S10BPT stacks three choices into one code: a long carriage, precision accuracy (P) and bottom-mount rail fixing. What lands on your bench is a 245 mm stainless-steel rail, 12 mm wide, with two long recirculating-ball carriages already fitted, bolted on from below rather than through the top face.
Handle the assembly gently: the ball-retention design keeps the balls in place during normal handling, but the manufacturer warns that inserting a carriage at an angle, or rushing a fit-and-remove cycle, can still drop balls - a dummy rail is the safe way to trial a carriage off the machine. The balls are ISO 3290 G10 grade, Japanese made; a double-lip seal scrapes lubricant and excludes dust, while an outer cover keeps larger debris off the seal strip. Do not strike or drop the rail - accuracy can shift with no visible damage. Ambient temperature must stay at or below 80 C, briefly to 100 C. Load and moment ratings are not published for LRM; we confirm them per model, so include your duty cycle in the RFQ.
Airtac LRM Miniature Linear Guide LRM12L2X245S10BPT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X245S10BPT |
|---|---|
| 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 | 245 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 LRM12L2X245S10BPT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X245 | 2 carriages on a 245 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, 245 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 LRM12L2X245S10BPT Is Used
SMT bench feeder slide
Advancing component feeders into pick position on a small SMT bench cell, with under-rail fixing keeping the operator deck clear of fastener heads.
Fibre-optic polish fixture
Holding ferrule assemblies square to a lapping film in a polish jig, where accuracy P supports a consistent, repeatable polishing angle.
Retrofit slide for a compact router
Adding a light-duty probe or tool slide to a small CNC router gantry, bolted from below so the existing top plate needs no new through holes.
Is the Airtac LRM Miniature Linear Guide LRM12L2X245S10BPT the Right Guide?
Quote this code when both travel straightness and under-deck fixing matter. If the applied load is more than light, or sits on a cantilever, move to LSH: it publishes per-carriage dynamic, static and moment ratings you can verify against, while LRM's are confirmed model by model through us. Where travel is short and crossed-roller stiffness is the priority, compare LGC. Check each item: complete set form, 12 mm rail width, long carriage, two blocks, 245 mm rail length, preload B light (freer running than C at the cost of some rigidity), accuracy P, bottom-mount fixing. Confirm the load rating with us before you finalise the design. On price: stocked sets span roughly 66 to 831 dollars across only two rail widths, so the rail length and block count you choose move the price far more than the size does.
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 LRM12L2X245S10BPT FAQ
12 mm rail width, 245 mm rail length, two long carriages, preload B (light), accuracy P (precision), bottom-mount rail fixing with a 10 mm end-hole offset. Torque M2 screws to 58.8 N.cm in steel, 39.2 in cast iron, 29.4 in aluminium; M3 screws to 196, 127 and 98 N.cm. Ambient temperature must stay at or below 80 C, with peaks to 100 C. Re-grease every 100 km of travel or every 3 to 6 months. Dynamic, static and moment ratings are not published for LRM; we confirm them for this model through the RFQ.
Yes - a full set: the 245 mm stainless rail with both long P-grade carriages fitted and pre-filled with Kyodo Yushi PS No. 2 grease. Prepare a ground or finish-milled seat, fix the rail from below, and keep the datum edge on the same side for both carriages to help running accuracy. Wipe off the rust-preventive oil, lubricate, and confirm an even film before first use. Secure the carriage as soon as it is positioned, since it can slide off under gravity on an inclined axis. If you would rather size against published ratings, ask us about LSH in the same request.
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 LRM12L2X245S10BPT
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.