Airtac LRM Miniature Linear Guide LRM12L1X420S10CP
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X420S10CP 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 length420 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 LRM12L1X420S10CP
This LRM12L1X420S10CP code specifies a full miniature guide set: a 420 mm stainless-steel rail, 12 mm wide, carrying a single long recirculating-ball carriage, everything assembled and factory-filled with grease. It is a top-mount rail (no trailing T), fixed with screws reaching down from the machine deck, and the P in the code marks precision-grade accuracy.
The precision P grade is the reason to pick this code over the H version when the motion has to read straight on an inspection instrument. Two carriage details earn their keep on a small stage: the long L body lengthens the span over which the Japanese ISO 3290 G10 balls circulate (that grade covers the balls only, not the assembly), and the double-lip seal plus outer cover keep abrasive dust away from the raceways. Watch the environment - ambient must stay at or below 80 C, with brief peaks no more than 100 C. AirTAC does not publish load or moment ratings for the LRM range, so we confirm the numbers for this specific model when you raise the RFQ. Note too that across our stocked sets, rail length rather than rail width drives the price, so trimming travel is the cheapest way to trim cost.
Airtac LRM Miniature Linear Guide LRM12L1X420S10CP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X420S10CP |
|---|---|
| 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 | 420 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.
Model Code: Airtac LRM Miniature Linear Guide LRM12L1X420S10CP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 1X420 | 1 carriage on a 420 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, 420 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 LRM12L1X420S10CP Is Used
Gauge comparison fixture
A small dimensional-inspection bench where gauged parts slide under a dial or laser sensor; precision grade P keeps the measured line honest along the 420 mm stroke.
Vision inspection camera rail
Carrying a compact camera across PCB panels in a prototype AOI rig, where the long carriage damps the pitch of a cantilevered lens bracket.
Optical alignment bench
Traversing a mirror or slit holder in a laboratory instrument, where top-mount fixing and medium preload give smooth, repeatable positioning without play.
Is the Airtac LRM Miniature Linear Guide LRM12L1X420S10CP the Right Guide?
Series first, grade second. LRM is the right family for light-duty miniature positioning; when the load is heavy or overhung, move to LSH, whose catalogue gives per-carriage dynamic, static and moment ratings to calculate with - the very data LRM withholds. If the axis is short and crossed-roller rigidity is the priority, LGC deserves a quote too. Against your layout, verify: set form, 12 mm rail width, long carriage, one block, 420 mm rail length, medium preload C - remembering that the firmer setting demands more careful seating at installation - precision accuracy P, top-mount fixing, and a load rating confirmed with us for this SKU. Availability should not worry you: long carriages are stocked nearly as deeply as standard ones (512 against 475 sets on our shelves), and price scales mainly with rail length, so 420 mm sits mid-range in our 40-995 mm stocked span.
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 LRM12L1X420S10CP FAQ
Rail width 12 mm; rail length 420 mm; one long (L) carriage; preload C, the medium grade; accuracy P, the precision grade; top-mount rail; 10 mm end-hole offset. Fixing screws are M3 class at 196 N.cm into steel, 127 N.cm into cast iron and 98 N.cm into aluminium. Keep ambient temperature at or under 80 C (peaks to 100 C) and re-grease every 100 km of travel or every 3 to 6 months, whichever comes first. Load and moment ratings are not published for LRM - we confirm them for this model on request.
Choose LRM when the envelope is small and the duty is light: you get a 12 mm rail, a long carriage and precision-grade travel where a larger guide will not fit. Choose LSH when you need numbers to engineer against, because LSH publishes per-carriage dynamic, static and moment ratings while LRM lists none - and LSH figures must never be scaled onto an LRM build. If travel is short and rigidity per millimeter is the priority, also price an LGC crossed-roller option. Send us the load case and we will confirm whether this 420 mm set is the right one.
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 LRM12L1X420S10CP
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.