Airtac LRM Miniature Linear Guide LRM12L1X120S10CPT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X120S10CPT 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.
- SeriesLRM
- Supplied asComplete guide set
- SizeLRM12
- Rail width12 mm
- Carriage lengthLong carriage
- Carriages1
- Rail length120 mm
- AccuracyP — precision 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 LRM12L1X120S10CPT
LRM12L1X120S10CPT combines two choices in one code: precision accuracy grade P for tight running tolerance, and a bottom-mount rail that fixes from beneath, leaving the top face clear. The set is a 120 mm length of 12 mm stainless rail, holes offset 10 mm, with one long recirculating-ball carriage shipped assembled in place.
The long block spans more balls and gives a longer bearing spread, while grade P keeps travel true along its length. Preload C is the stiffest LRM grade, so plan on a ground or finish-milled seat and expect a firmer running feel. Balls are Japanese-made, graded ISO 3290 G10, secured by a ball-retention design - though that is a handling aid, not a guarantee: fit the carriage square and unhurried, or use a dummy rail, since angled or hurried fitting can still drop balls. A double-lip seal and outer cover protect the raceway. Ambient limit is 80 C with transient peaks to 100 C. There are no published load or moment ratings on LRM; include your load case in the RFQ and we confirm the figure for this exact model before ordering.
Airtac LRM Miniature Linear Guide LRM12L1X120S10CPT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X120S10CPT |
|---|---|
| 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 | 120 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.
Model Code: Airtac LRM Miniature Linear Guide LRM12L1X120S10CPT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 1X120 | 1 carriage on a 120 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. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 120 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.
Where the Airtac LRM Miniature Linear Guide LRM12L1X120S10CPT Is Used
Optical bench with tapped underside
Bottom-mount holes let the rail bolt to a tapped optical bench from beneath, leaving the top face clear for optics; grade P keeps the travel true.
PCB test fixture with pogo-pin head
A fixture lowering a pogo-pin head onto board contacts uses the stiff preload C for a repeatable approach; the actual capacity is confirmed with us per model.
Probe station positioner
A wafer probe station nudges needles onto pads across 120 mm of travel; the 80 C ambient limit keeps it safe beside a hotplate used for thermal testing.
Is the Airtac LRM Miniature Linear Guide LRM12L1X120S10CPT the Right Guide?
Two checks matter before ordering this model. First, capacity: LRM publishes no load or moment ratings, so send the load case by RFQ and we confirm the figure for this exact SKU. Second, series: if the load is heavy or cantilevered, LSH is the better design point because it publishes per-carriage dynamic, static and moment ratings; for short travel needing crossed-roller rigidity, look at LGC.
Then match the code: complete set, 12 mm rail, 120 mm long, one long carriage, medium preload C, precision grade P, bottom-mount rail, plain finish. A bottom-mount seat must be reachable from beneath and finished ground or fine-milled. If this is a carriage replacement rather than a new build, say so - we stock only four carriage-only SKUs in the whole range, so most replacements come as a special order matched to the pairing code on the original rail.
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 LRM12L1X120S10CPT FAQ
Yes: 12 mm rail, 120 mm length, one long carriage, preload C (medium), accuracy P (precision), bottom-mount rail, plain finish. Fix with M3 screws at 196 N.cm into steel, 127 N.cm into cast iron, 98 N.cm into aluminium, or M2 at 58.8 / 39.2 / 29.4 N.cm. Ambient temperature must not exceed 80 C, with peaks to 100 C. Factory grease is Kyodo Yushi PS No.2; re-apply every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for this series, so we confirm them per model on request.
This set wins on envelope and quality of motion: 12 mm rail width, precision grade P, bottom-mount fixing for a clean top face. It loses when raw capacity decides - LSH publishes dynamic, static and moment ratings per carriage, so a heavy or cantilevered load should be sized there, while LRM ratings are confirmed per model through us. Short travel with crossed-roller rigidity points to LGC instead. Whichever way you go, confirm the load figure before cutting metal.
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 LRM12L1X120S10CPT
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.