Airtac LRM Miniature Linear Guide LRM12L2X170S10APT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X170S10APT 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
- AccuracyP — precision grade
- PreloadA — no 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 LRM12L2X170S10APT
LRM12L2X170S10APT combines two choices that suit measuring instruments: precision accuracy grade P, and a bottom-mount rail that bolts in from beneath so nothing interrupts the upper working surface. The set is one 170 mm stainless-steel rail, 12 mm wide, with two long recirculating-ball carriages running without preload (grade A), pre-greased at the factory.
Long carriages are stocked here as deeply as standard ones - 512 long-carriage sets against 475 standard - so specifying the longer block for extra bearing span costs nothing in availability on this size, which dominates our stock (924 of 988 stocked sets are LRM12). The balls are Japanese-made ISO 3290 G10, a grade that applies to the balls only. Treat the rail gently: a knock or drop can change accuracy with no visible damage, so do not strike it and do not dismantle the carriages. Ambient limit is 80 C with peaks to 100 C. Since LRM publishes no load or moment ratings, we confirm the numbers for this model on request - raise the RFQ.
Airtac LRM Miniature Linear Guide LRM12L2X170S10APT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X170S10APT |
|---|---|
| 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 | P — precision grade |
| Preload grade | A — no 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 LRM12L2X170S10APT
| 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. |
| A | A — no 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, 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 LRM12L2X170S10APT Is Used
CMM-style inspection slide
A low-cost coordinate-measuring fixture for small moulded parts: precision grade P and a bottom-mount rail that leaves the granite or tooling plate surface clear for the workpiece.
Laser diode alignment jig
A production jig that trams a laser diode module into a bore: the long twin carriages resist tipping as the operator leans a dial indicator over the rail, and the outer cover keeps swarf off the seal.
High-frequency life-test shuttle
An electronics test shuttle cycling a connector 40 mm back and forth: at that stroke, the 100 km grease interval - not the 3-6 month calendar - sets the maintenance date, so schedule top-ups by counter.
Is the Airtac LRM Miniature Linear Guide LRM12L2X170S10APT the Right Guide?
Work the checklist: complete set, 12 mm rail width, long carriage, two carriages, 170 mm rail, preload A (no preload - the forgiving, easy-fitting choice), precision P grade, bottom-mount rail fixing. Because LRM carries no published load or moment data, ask us to confirm the rating for this exact code before you commit. For heavier or overhung loads, choose LSH: its catalogue publishes dynamic, static and moment ratings per carriage, which is exactly what LRM lacks. When travel is short and crossed-roller rigidity is the priority, LGC is the alternative. Handling note for this build: in a two-axis layout, keep the datum face on the same side of each rail so the running accuracy of the pair stays consistent.
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 LRM12L2X170S10APT FAQ
Rail: 12 mm width, 170 mm length, stainless steel, bolted from below (bottom-mount). Blocks: two long carriages, preload A (none), precision grade P. Mounting screws: M2 at 58.8 N.cm into steel (39.2 cast iron, 29.4 aluminium), M3 at 196 N.cm (127 cast iron, 98 aluminium). Ambient temperature must stay at or below 80 C with peaks of 100 C. Re-grease after every 100 km of travel or every 3-6 months. No load or moment rating is published for LRM, so we confirm it per model before the order.
Yes - it ships as a matched set: one 170 mm, 12 mm wide stainless rail and two long carriages fitted on it, pre-filled with Kyodo Yushi PS No. 2 grease. Not included: mounting screws, the ground or finish-milled mounting surface, any lubricant for top-ups, and rails or carriages sold separately (LRM5 cannot be split at all; other sizes can be ordered that way). If you ever need a spare carriage, match the pairing code stamped on the original - our carriage-only stock is thin, so plan ahead.
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 LRM12L2X170S10APT
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.