Airtac LRM Miniature Linear Guide LRM12N2X395S10BPT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N2X395S10BPT 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 length395 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 LRM12N2X395S10BPT
This code combines the two specification choices that usually demand a reason: accuracy grade P and bottom-mount rail fixing. LRM12N2X395S10BPT delivers a 12 mm wide, 395 mm long stainless rail with two standard carriages at light preload B, fastened from beneath so the working face stays clean and unobstructed.
The combination suits a precision slide that lives inside something else - a recessed channel in a measuring machine base, or a stage where the top surface must remain flush. Precision grade P asks for discipline at installation: the mounting surface should be ground or finish-milled, the datum face can be either side of the rail, and with two carriages both should reference the datum on the same side for the best running accuracy. Handle the assembly gently - do not strike or drop the rail, since accuracy can be lost with no visible damage - and remember the carriages are pre-greased with Kyodo Yushi PS No. 2 and must not be dismantled or pulled off the rail casually; the ball retainer helps but angled fitting can still shed balls. Ambient temperature stays at or below 80 C, peaking no higher than 100 C. A final commercial note: across only two stocked rail widths the price spread runs from about $66 to $831, driven almost entirely by rail length and carriage count rather than size - so trimming travel is the cheaper lever than changing series. Load and moment ratings are not published for LRM; include your load in the RFQ and we will confirm the figures for this set.
Airtac LRM Miniature Linear Guide LRM12N2X395S10BPT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N2X395S10BPT |
|---|---|
| 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 | 395 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 LRM12N2X395S10BPT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 2X395 | 2 carriages on a 395 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, 395 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 LRM12N2X395S10BPT Is Used
Fibre-optic alignment slide
A fibre collimator is trued to a laser axis on this bottom-mount P-grade rail, seated in a milled channel in the breadboard so nothing stands above the plate.
Microscope sample translator
A laboratory microscope stage carries specimen holders on two carriages across a 395 mm sweep, with grade P holding the sample path true under the objective.
Precision retrofit of a small jig
Upgrading an older fixture, a machinist re-cuts the base to accept this rail from below, keeping the original top surface flush for the work-holding clamps.
Is the Airtac LRM Miniature Linear Guide LRM12N2X395S10BPT the Right Guide?
This set fits when you need a precision-grade slide hidden inside your structure. If the applied load or overhang is significant, move up to LSH - it publishes per-carriage dynamic, static and moment ratings you can calculate against, something LRM's catalogue simply does not offer. If your travel is short and the priority is crossed-roller rigidity, LGC is the cross-over series. Before ordering, work the checklist: complete set form, 12 mm rail width, standard carriage length, two blocks, 395 mm rail length, preload B with its installation trade-off (freet running but slightly more play than C), accuracy P, bottom-mount direction, and - essential for LRM - confirm the load rating with us before you commit to the design.
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 LRM12N2X395S10BPT FAQ
Separate carriage-only and rail-only formats do exist in the AirTAC LRM catalogue - carriage-only codes carry a pairing letter (A to E) that must match between rail and carriage, so note the letter off your original part. However, our own stock is very thin on carriage-only items - just four SKUs - and we hold no rail-only stock at all, so most single-part replacements are a special order. For this complete set, the practical route is usually to replace the whole 395 mm assembly, or to send us the pairing code with your RFQ and we will chase the exact matching part.
Confirm the configuration matches your drawing: 12 mm rail width, 395 mm length, two standard carriages, light preload B, precision accuracy P, bottom-mount fixing. Prepare a ground or finish-milled mounting surface, drive the M3 screws to 196 N.cm into steel (127 N.cm cast iron, 98 N.cm aluminium), and reference both carriages to the same side datum. Wipe the rust-preventive oil off and lubricate before first use, then re-grease every 100 km or 3 to 6 months. Keep the ambient under 80 C. Be aware that basic dynamic load, static load and moment ratings are not published by the manufacturer for LRM - we confirm them per model, so state your load and duty in the RFQ before finalising the design.
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 LRM12N2X395S10BPT
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.