Airtac LRM Miniature Linear Guide LRM12L2X495S10BPT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X495S10BPT 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 length495 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 LRM12L2X495S10BPT
This is the most demanding variant in this four-way split: LRM12L2X495S10BPT pairs the P (precision) accuracy grade with bottom-mount (T) fixing. In practice that means a 495 mm, 12 mm wide stainless rail whose screw holes fasten from beneath, carrying two long carriages at light preload - a build aimed at instruments where the measured path must be tight and the mounting fixings must stay concealed.
Underside fixing changes the installation sequence: prepare the mating face first (ground or finish-milled), offer the rail up, then choose the datum side - either edge of the rail can serve, and with two carriages the datum should sit on the same side for both. The internals are the proven LRM package: recirculating balls made in Japan to ISO 3290 G10 (the grade covers the balls alone), double-lip seals, an outer cover over the screw line, and ball retention that limits - but does not eliminate - dropped balls during handling. Storage before use matters for a precision part: coat with rust-preventive oil, seal in the bag, store flat away from heat and humidity. Ambient running limit is 80 C, transients to 100 C. No load or moment ratings are published for LRM; confirm the figures for this exact model with us via RFQ.
Airtac LRM Miniature Linear Guide LRM12L2X495S10BPT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X495S10BPT |
|---|---|
| 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 | 495 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 LRM12L2X495S10BPT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X495 | 2 carriages on a 495 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, 495 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 LRM12L2X495S10BPT Is Used
Metrology bridge under a plate
A measuring bridge built beneath a granite or steel plate uses bottom-mount holes so fasteners never intrude on the working surface above, while the P grade keeps the probe path honest.
Micro-assembly cell in electronics production
A micro-assembly cell placing small components runs this two-carriage set along its infeed axis; the spaced long carriages resist the tipping a head overhang would otherwise introduce.
Retrofit of an ageing inspection machine
Replacing a worn slide in an older inspection machine suits this set: underside fixing reuses the existing base, and the rebuild needs only a prepared, ground or finish-milled mounting face.
Is the Airtac LRM Miniature Linear Guide LRM12L2X495S10BPT the Right Guide?
Because rail length dominates cost in this range - stocked sets span roughly $66 to $831 while rail width takes only two values - check whether 495 mm of travel is truly needed before committing to the precision grade. If the load is heavy, cantilevered, or needs a published number to size against, move up to AirTAC LSH, which lists per-carriage dynamic, static and moment ratings; LRM publishes none. If the stroke is short and crossed-roller rigidity is the goal, LGC is the cross-check. Final match list: complete-set form, 12 mm rail width, long carriage, two blocks, 495 mm rail, B light preload rather than C (freer motion, softer feel), P precision accuracy, bottom-mount holes, and a load rating confirmed with us before the order goes in.
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 LRM12L2X495S10BPT FAQ
Configuration: 12 mm rail width, 495 mm rail length, two long carriages, B light preload, P precision accuracy, bottom-mount (T) fixing, 10 mm end-hole offset, stainless-steel rail. Installation figures: torque M2 screws to 58.8 N.cm into steel (39.2 cast iron, 29.4 aluminium) and M3 screws to 196 N.cm into steel (127 cast iron, 98 aluminium); keep the ambient at 80 C or below with peaks no higher than 100 C; re-grease every 100 km of travel or every 3 to 6 months. The one thing absent is a load and moment table - LRM publishes none, so we confirm ratings for this model individually when you RFQ.
Stay with this LRM12 set when the envelope is small and the duty is light, precise positioning - its long twin carriages and precision grade are the strengths. Move to LSH the moment you need a published dynamic, static or moment rating to justify a heavier or overhung load, since LRM offers no such table and guessing is not an option. Move to LGC when the travel is short and stiffness from crossed rollers matters more than stroke. Either way, send the load, layout and stroke with your RFQ and we confirm the ratings for the exact model you order.
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 LRM12L2X495S10BPT
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.