
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X170S10CPT 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.
This variant exists for designs where the top of the guide is sacred: the LRM12L1X170S10CPT is a 12mm stainless-steel rail, 170mm in length, with one long recirculating-ball carriage, and the trailing T in the code specifies bottom-mount fixing - screws go in from beneath the rail, leaving the exposed face unbroken for covers, sensors or workpieces. Accuracy is P, the precision grade.
Underneath the cover plate sit ISO 3290 G10 Japanese balls in a recirculating circuit, retained so they cannot spill during fitting, with a double-lip seal doing the oil-scraping and dust exclusion and an outer cover shielding the seal strip from larger debris. The medium preload C gives this precision carriage a firm, backlash-free feel, best paired with a properly ground or finish-milled seat. Ambient temperature ceiling is 80 C, tolerating brief excursions to 100 C. Because AirTAC lists no load or moment ratings for LRM, capacity is confirmed model by model - include this SKU in an RFQ and we will verify it for your duty cycle.
| Model | Airtac LRM Miniature Linear Guide LRM12L1X170S10CPT |
|---|---|
| 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 | 170 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 | 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. |
| 1X170 | 1 carriage 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, 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 measuring dial or vision sensor slides over parts on the unbroken top face of the bottom-mount rail, so swarf and coolant cannot collect around screw heads.
The long, preloaded carriage positions a lens or detector quickly and smoothly along a 170mm scan path, with the P grade keeping the optical axis stable.
A light pusher finger advancing components down a feed track rides on the carriage; the medium preload stops the finger from wandering between pushes.
For sizing questions with real weight or an overhung moment, move up to LSH, where per-carriage dynamic, static and moment ratings are published and you can calculate with confidence; LRM offers no published ratings and is selected on envelope, precision and smoothness. For short travels demanding crossed-roller stiffness, look at LGC. Your checklist for this code: complete set, 12mm rail width, long carriage, 1 block, 170mm rail, preload C (rigid but alignment-sensitive), P accuracy, bottom-mount, and a confirmed load rating from us. Among the roughly 988 stocked LRM sets, size 12 dominates, so this configuration is readily available from stock.
Quick checklist
In the box is one complete guide: a 12mm-wide stainless rail 170mm long, one long carriage fitted, pre-lubricated with Kyodo Yushi PS No. 2 and ready to slide. Bottom-mount fixing means the fasteners enter from below; use M3 screws at 196 N.cm into steel, 127 N.cm into cast iron, 98 N.cm into aluminium (M2: 58.8 / 39.2 / 29.4 N.cm). The mounting seat must be ground or finish-milled. The ambient limit is 80 C, peaking at 100 C, and re-greasing is due every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM; we confirm them per model via RFQ.
Before first use, wipe off the factory rust-preventive oil and apply your lubricant. The 100 km re-grease interval arrives faster than it sounds - a 200mm stroke cycling once a second covers 100 km in about three weeks of continuous running - so on such duty the distance binds before the calendar's 3 to 6 months. Store any spare rail coated in rust-preventive oil, sealed in its bag and laid flat away from heat and humidity, and never strike or drop the rail, since accuracy can suffer with no visible damage.
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.