
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X445S10BP 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.
The LRM12N1X445S10BP takes the same 12 mm wide, 445 mm stainless-steel rail and single standard-length carriage as its no-preload sibling, but the B in the code adds light preload. That removes the free play, firms up the feel of the slide and improves repeatability at reversal, at the cost of slightly higher rolling resistance. The set arrives complete, carriage pre-greased on the rail.
Preload on LRM comes in three steps - A for none, B for light, C for medium - and B is the middle road: enough stiffness for accurate stops without the tighter running clearances and less forgiving mounting that grade C demands. The carriage seals with a double lip for oil retention and dust exclusion, an outer cover shields the seal strip and hides the screws, and the balls are Japanese-made to ISO 3290 G10, a grade for the balls alone. Mind the regreasing clock: at a 200 mm stroke cycling once per second, a carriage covers the 100 km interval in roughly three weeks of continuous running, so distance tends to trigger servicing before the 3-to-6-month calendar does. Keep ambient temperature at or below 80 C. Load and moment figures are not published for this series; we confirm them per model - include the duty in your RFQ.
| Model | Airtac LRM Miniature Linear Guide LRM12N1X445S10BP |
|---|---|
| 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 | 1 |
| Rail length | 445 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.
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X445 | 1 carriage on a 445 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. |
| This order | Complete guide set |
|---|---|
| Rail | Yes, 445 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.
A benchtop fluid dispenser crosses a PCB on a 445 mm axis; light preload takes up the play so the needle parks repeatably at each dot.
An optoelectronics test rig slides a detector head along the beam path; the preloaded carriage holds position against small vibration without running stiff.
A small label applicator advances its head between roll and product; the double-lip seal and outer cover cope with paper dust on a packaging bench.
Preload is the first decision on a set like this: grade B is the balanced pick, grade A rolls freest, and grade C gives the most rigidity but tolerates the least from the installation - the mounting surfaces must be ground or finish-milled in every case. If the load is substantial or cantilevered, though, no preload grade substitutes for real data - step up to AirTAC LSH, which publishes dynamic, static and moment ratings per carriage, and keep LGC in mind for short travels that need crossed-roller rigidity. The checklist for this SKU: complete set, 12 mm rail width, standard carriage, one carriage, 445 mm rail, light preload (B), precision accuracy (P), top-mount fixing, and a load rating confirmed with us before ordering. Mounting tip: either side of the rail can serve as the datum face, and if you ever run more than one carriage on a rail, put the datum on the same side for each.
Quick checklist
A complete set: one 12 mm wide stainless rail, 445 mm long, with a single standard-length carriage, 10 mm end-hole offset, light preload (B), precision accuracy (P) and top-mount rail fixing. Regrease every 100 km of travel or every 3 to 6 months through the lubrication hole at the rear of the carriage; first-charge and top-up grease quantities vary by model across roughly 0.02 to 1.0 cm3, so follow the datasheet for this unit. Ambient temperature must stay at or below 80 C, with peaks to 100 C. Dynamic load, static load and moment ratings are not published for LRM - we confirm them for this exact model when you enquire.
LRM12 is the 12 mm rail series; N is the standard carriage length; 1X445 means one carriage on a 445 mm rail; S10 sets a 10 mm hole offset from the rail end; B is light preload; P is precision accuracy; and the absence of a trailing T means the rail mounts from the top. The set is complete - rail and carriage together - not a carriage-only BK part, and no rail is sold separately under this code.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
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.