Airtac LRM Miniature Linear Guide LRM12L2X150S12.5BP
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X150S12.5BP 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 length150 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 LRM12L2X150S12.5BP
LRM12L2X150S12.5BP is a ready-to-fit AirTAC LRM guide set: a 12mm stainless rail cut to 150mm, with its first mounting hole 12.5mm in from the rail end (the S12.5 offset), carrying two long recirculating-ball carriages in plain finish. Because the LRM size number is literally the rail width, the seat in your base plate is a 12mm channel.
Light preload (B) is the middle way: some of the lost motion is taken up, yet the carriages still run with noticeably less drag than the medium C grade, which suits a slide you adjust or reverse often. Precision (P) grade governs the accuracy tolerances across the paired carriages. The two long blocks spread the load along a longer ball path and stretch the bearing span, useful when a head overhangs the carriage. Balls are Japanese-made to ISO 3290 G10 - that grade describes the balls only, not the assembly. Keep the surroundings under 80 C ambient, peaks to 100 C. Load and moment capacities are not in print for LRM; send the RFQ and we return the confirmed figures for this model.
Airtac LRM Miniature Linear Guide LRM12L2X150S12.5BP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X150S12.5BP |
|---|---|
| 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 | 150 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 LRM12L2X150S12.5BP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X150 | 2 carriages on a 150 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, 150 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 LRM12L2X150S12.5BP Is Used
Fibre alignment slide
Traversing a fibre chuck or alignment fixture in a photonics assembly rig; light preload B lets the axis reverse quickly without sticking.
Connector test gantry
A small two-axis gantry presenting connectors to a test head on an electronics line; paired long carriages keep the bridge level over the stroke.
Small-parts sorting chute
Guiding a lightweight divert arm across the induction bench of a parcel sorter; the 150mm rail covers the throw with margin to spare.
Is the Airtac LRM Miniature Linear Guide LRM12L2X150S12.5BP the Right Guide?
AirTAC LRM is the pick for light, precise motion in a compact footprint. When the load is heavy or sits on a cantilever, go up to LSH: its catalogue states dynamic, static and moment ratings per carriage, which LRM does not publish at all. For very short travel needing crossed-roller stiffness, compare LGC. Note too that within LRM stock, price tracks rail length and carriage count rather than width - stocked sets run from about $66 to $831 across just the 12 and 15mm rails, so trim travel before enlarging the guide. Checklist for this part: set form, 12mm rail, long carriages, two of them, 150mm rail, S12.5 end offset, light preload B with its easier sliding, precision P grade, top-mount fixing, and a load rating we confirm with you before the order.
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 LRM12L2X150S12.5BP FAQ
Rail: stainless, 12mm wide, 150mm long, first hole at 12.5mm from the end, top-mount fixing. Carriages: two, long series, light preload (B), precision (P) accuracy. Screw torques: M2 at 58.8 N.cm into steel, 39.2 N.cm into cast iron, 29.4 N.cm into aluminium; M3 at 196, 127 and 98 N.cm. Factory grease is Kyodo Yushi PS No. 2; refresh every 100km of travel or every 3 to 6 months. Ambient temperature limit: 80 C, brief peaks to 100 C. LRM publishes no load or moment ratings - we confirm them for this model on request.
Yes, as a carriage-only code - it ships with no rail, and the pairing letter (A to E) must match the letter on your original rail, so read it off the rail before ordering. Carriage-only stock is thin, with only four SKUs live, so most spares are ordered in specially. One caution for the changeover: the ball-retention design keeps balls with the carriage during normal handling, but fitting at an angle or swapping in a hurry can still drop them, which is why a dummy rail makes the job safer.
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 LRM12L2X150S12.5BP
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.