Airtac LRM Miniature Linear Guide LRM12L2X170S10CHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X170S10CHT 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 length170 mm
- AccuracyH — high grade
- PreloadC — medium 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 LRM12L2X170S10CHT
LRM12L2X170S10CHT is the under-fixing version of the 12 mm twin-long-carriage set: the same 170 mm stainless-steel rail and two long recirculating-ball blocks, but with the trailing T shifting the mounting holes through the base of the rail. It suits frames where the screwdriver approaches from below - a machine wall, the underside of a bracket plate, a channel section - or anywhere the visible top face must stay clear.
Mechanically it matches the top-mount code: 12 mm rail width, medium preload for a play-free feel, high accuracy grade H, and Japanese-made ISO 3290 G10 balls (the grade applies to the balls themselves) running behind double-lip seals under an outer cover that also keeps the screw heads hidden. LRM carriages share one common rail profile within the series, so any LRM12 carriage matches this rail. Fix the rail to a ground or finish-milled seat and torque to the catalogue values. Keep the ambient at or below 80 C, peaking at 100 C. Load and moment ratings are not published for this series; we confirm them per model through the RFQ.
Airtac LRM Miniature Linear Guide LRM12L2X170S10CHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X170S10CHT |
|---|---|
| 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 (spliced sections) |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | H — high 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.
Model Code: Airtac LRM Miniature Linear Guide LRM12L2X170S10CHT
| 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. |
| H | H — high grade. |
What Is In The Box
| 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.
Where the Airtac LRM Miniature Linear Guide LRM12L2X170S10CHT Is Used
Electronics test fixture
A rack of test sockets on a bench fixture often needs its actuator axis bolted to the underside of a shelf; bottom-mount holes let this rail hang where a top-fixing rail cannot, over a 170 mm stroke.
Small-parts feeder slide
On an electronics assembly line, a feeder that indexes tiny connectors past a pick point can use this 12 mm twin-block rail for smooth, repeatable nudges; the outer cover keeps larger debris off the seal strip in a busy workcell.
Lens-holder carriage
In a small optical assembly jig, mounting from below leaves the rail's top face free for custom brackets, while grade H travel and the long blocks hold the lens axis steady through each adjustment.
Is the Airtac LRM Miniature Linear Guide LRM12L2X170S10CHT the Right Guide?
If the slide ever has to carry a real cantilever or a heavy payload, step up to the LSH series, whose tables list dynamic, static and moment ratings per carriage - numbers LRM simply does not publish, which is why we confirm load figures per model instead. Where travel is short and you need crossed-roller stiffness rather than stroke, look at LGC. Check before you commit: this is a complete set (rail plus two long carriages), 12 mm rail, 170 mm long, preload C for rigidity but with tighter demands on surface finish, accuracy H, bottom-mount holes. If you later order a spare block on its own, its pairing letter must match the rail - and expect a special order, as carriage-only stock is thin.
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 LRM12L2X170S10CHT FAQ
Choose LRM when the envelope is small and duty is light: here a 12 mm rail, 170 mm long, with two long carriages, medium preload and grade H accuracy, in a bottom-mount form. Choose LSH when the load is serious or cantilevered, because LSH publishes dynamic, static and moment ratings per carriage that you can size against, while LRM's are not published and we confirm them per model. LGC is the third option when travel is short and crossed-roller rigidity matters more than stroke.
Rail width 12 mm, rail length 170 mm, two long carriages, bottom-mount (T) fixing, medium preload C, accuracy H. Screw torques from the catalogue: M2 at 58.8 N.cm into steel (39.2 cast iron, 29.4 aluminium) and M3 at 196 N.cm (127 cast iron, 98 aluminium). Ambient limit 80 C with 100 C peaks; re-grease every 100 km or 3 to 6 months. No load, moment or speed figures are published for LRM - we confirm them for this exact model on request.
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 LRM12L2X170S10CHT
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.