
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X170S10CP 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.
The P at the end of LRM12L2X170S10CP marks precision accuracy, the tighter of the two grades offered on LRM rails of this length. In the box: one 170 mm stainless-steel rail, 12 mm wide, end holes offset 10 mm, and two long recirculating-ball carriages fitted, medium-preloaded and ready to bolt down from the top.
Precision grade earns its keep when carriage position is part of the measurement - microscope stages, camera scanners, calibration rigs. It only shows if the seats are ground or finish-milled, and with two carriages sharing the rail the datum edge should be on the same side for both. The running elements are Japanese-made ISO 3290 G10 balls - a grade for the balls only, not for the assembly - behind double-lip seals and an outer cover that shields the seal strip from larger debris. Ambient must not exceed 80 C, briefly 100 C. No load or moment ratings are published for LRM; we confirm the figures for this exact model via the RFQ before you order.
| Model | Airtac LRM Miniature Linear Guide LRM12L2X170S10CP |
|---|---|
| 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 | 170 mm |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision grade |
| Preload grade | C — medium 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. |
| L | Long carriage. |
| 2X170 | 2 carriages on a 170 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| C | C — medium 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, 170 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.
Under a toolmaker's microscope, grade P running over 170 mm keeps part positioning repeatable between measurements, and the long carriages limit nodding at the ends of travel.
A benchtop calibration rig sweeping a pressure or proximity sensor against a reference gains a play-free, stiff feed from preload C - provided the mounting seat is ground or finish-milled to match the grade.
Aligning an optical fiber or waveguide to a photonic chip demands straight, repeatable translation; precision accuracy and the twin long blocks keep the coupling axis steady through the 170 mm stroke.
Price does not scale with size on this range: stocked sets span roughly $66 to $831 over just two rail widths, so a 170 mm twin-carriage set sits toward the shorter end of that spread. If your sizing calculation needs published numbers, LSH lists dynamic, static and moment ratings per carriage - LRM does not, and we confirm load figures per model instead. For a short stroke where crossed-roller rigidity beats travel length, LGC is the alternative series. Match on form (set with two long carriages), rail width 12 mm, rail length 170 mm, preload C (stiffer, less tolerant of seat errors), accuracy P and top-mount holes - then confirm the load rating with us before committing.
Quick checklist
Rail width 12 mm, rail length 170 mm, two long carriages, top-mount fixing, medium preload (C) and precision accuracy (P). Install on a ground or finish-milled seat and follow the catalogue screw torques - M2 at 58.8 N.cm into steel or M3 at 196 N.cm. Keep ambient at or below 80 C (peaks to 100 C) and re-grease every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM; we confirm them for this exact model with your enquiry.
Yes - this SKU is the complete assembly, rail and both long carriages supplied together. It is not a block-only order. If a carriage is damaged later, note that carriage-only LRM codes carry a pairing letter matching them to their rail, and our carriage-only stock is thin, so most single-block replacements are a special order. Fit the new carriage carefully or on a dummy rail; the ball retainer helps, but angled or hasty fitting can still drop balls.
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.