Airtac LRM Miniature Linear Guide LRM12L1X120S10BP
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X120S10BP is a miniature linear guide on a 12 mm stainless-steel rail with recirculating-ball carriage. 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
- Carriages1
- Rail length120 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 LRM12L1X120S10BP
This code, LRM12L1X120S10BP, specifies a full miniature guide set: one stainless-steel rail 12 mm wide and 120 mm long plus a single long carriage. No trailing letter means the rail mounts from the top, the usual arrangement where the mounting plate is machined and the screw heads sit in the rail counterbores.
Preload B removes the internal clearance, so the carriage runs with less play and a slightly firmer feel than the free A grade, at the cost of a little running drag. The carriage is the long version, putting more balls under the duty and a longer span against tipping. Along the rail you get the series shared profile, ball retention holding the ISO 3290 G10 Japanese-made balls during handling, a double-lip seal and an outer cover. The ambient limit is 80 C, peaking to 100 C. Because AirTAC publishes no load or moment ratings for LRM, we confirm them for this exact configuration when you send the RFQ.
Airtac LRM Miniature Linear Guide LRM12L1X120S10BP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X120S10BP |
|---|---|
| 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 | 1 |
| Rail length | 120 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 LRM12L1X120S10BP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 1X120 | 1 carriage on a 120 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, 120 mm |
| Carriage | Yes, 1 |
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 LRM12L1X120S10BP Is Used
Compact dispensing gantry
A paste- or adhesive-dispensing axis on a small PCB line: preload B takes out the play so the needle path stays true, while the top-mount rail bolts straight onto the milled gantry plate.
Machine-vision camera rail
A camera slide traversing a 120 mm inspection window on a packaging machine, where the light preload keeps framing repeatable without heavy running drag on the drive.
Wire-winding traverse guide
A guided traverse that lays fine wire in a small winding fixture; the stainless rail handles bench wear and the double-lip seal keeps dust and fibre debris out of the raceway.
Is the Airtac LRM Miniature Linear Guide LRM12L1X120S10BP the Right Guide?
Choose deliberately between series here: LRM suits this job on size and smoothness, but if the load is heavy or overhung, LSH is the safer pick because it publishes dynamic, static and moment ratings per carriage that you can calculate against, which LRM does not. For short travel demanding crossed-roller rigidity, LGC is the alternative. Run the checklist before ordering: form (complete set), 12 mm rail width, long carriage, single block, 120 mm rail length, preload B (clearance removed - a firmer feel at the cost of a little running drag), P accuracy, top-mount direction, and a confirmed load rating from us, since no LRM load figure is published. On sourcing, size 12 is the deepest part of the LRM range, so a design built around this rail width is the easiest to support.
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 LRM12L1X120S10BP FAQ
A 12 mm wide rail (the size code is the rail width in millimetres) cut to 120 mm, one long carriage, preload B (light), accuracy P (precision) and top-mount rail fixing. M3 screws tighten to 196 N.cm in steel, 127 in cast iron, 98 in aluminium; M2 screws to 58.8, 39.2 and 29.4 N.cm. The ambient limit is 80 C with transients to 100 C. Carriages come pre-filled with Kyodo Yushi PS No. 2; re-grease after every 100 km of travel or every 3 to 6 months. Basic dynamic and static load ratings, moment ratings and running parallelism are not published for LRM - request the confirmed figures for this model through an RFQ.
Pick LSH when the load is substantial or cantilevered: that series publishes basic dynamic, static and moment ratings per carriage, so you can size the duty on paper. LRM, this series, publishes none of those figures - it is chosen for its small envelope, stainless rail and smooth light-duty running instead, and we confirm the rating for the specific model before you order. If the travel is short and crossed-roller rigidity is what you need, LGC is the cross-over alternative.
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 LRM12L1X120S10BP
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.