Airtac LRM Miniature Linear Guide LRM12L2X220S10CH
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X220S10CH 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 length220 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 LRM12L2X220S10CH
The LRM12L2X220S10CH pairs medium preload with high accuracy on a compact platform: a 12 mm wide stainless-steel rail, 220 mm long, drilled top-mount with a 10 mm end-hole offset, running two long recirculating-ball carriages. It arrives as a complete set - rail and both carriages assembled, ready for a ground or finish-milled mounting surface.
Preload grade C is the rigid, less forgiving choice on LRM. It removes internal clearance so the carriages resist rocking under an offset load, but it asks more of the installation: faces must be flat and bolts torqued evenly, or the extra stiffness shows up as running friction. Each carriage rides on Japanese-made recirculating balls graded ISO 3290 G10 for roundness - a ball grade only, not an assembly standard - held by a ball retainer, wiped by a double-lip seal and shielded by an outer cover over the screws. Ambient must stay at or below 80 C, peaks to 100 C. No load or moment ratings are published for LRM; send the RFQ and we confirm the figures for this exact configuration.
Airtac LRM Miniature Linear Guide LRM12L2X220S10CH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X220S10CH |
|---|---|
| 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 | 220 mm |
| 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 LRM12L2X220S10CH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X220 | 2 carriages on a 220 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, 220 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 LRM12L2X220S10CH Is Used
Micro-dispensing gantry
Guiding a small glue or solder-paste dispense head on an electronics assembly cell, where medium preload steadies the head against the stop-and-start of each dot.
Semiconductor shuttle slide
Feeding small trays or jigs between benchtop process stations, the twin long carriages keeping the tray level through each move.
Connector test positioner
Aligning a test head with fine-pitch connectors on a repeatability fixture, grade H travel accuracy and a tight preload keeping contact points on target.
Is the Airtac LRM Miniature Linear Guide LRM12L2X220S10CH the Right Guide?
Because LRM carries no published load table, sizing is a conversation rather than a lookup: for heavy or cantilevered duty move up to LSH, whose per-carriage dynamic, static and moment ratings let you calculate margins properly, and for short travel where crossed-roller rigidity is the priority, LGC is the alternative. On the checklist for this code: complete-set form, 12 mm rail width, long carriage pattern, two blocks on one 220 mm rail, preload C - chosen for stiffness at the cost of a less tolerant installation - accuracy H, top-mount rail, and a load rating confirmed with us for your actual duty. At this width, rail length and carriage count drive the price far more than size does, so trim the 220 mm length against your real travel before ordering.
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 LRM12L2X220S10CH FAQ
Rail: 12 mm wide, 220 mm long, 10 mm end-hole offset, top-mount. Carriages: two, long pattern. Preload: grade C (medium); accuracy: grade H (high). Fixing torques: M3 - 196 N.cm into steel, 127 into cast iron, 98 into aluminium; M2 - 58.8 / 39.2 / 29.4 N.cm. Ambient temperature limit is 80 C with transient peaks to 100 C. Lubrication: first-charge and top-up quantities run from 0.02 up to 1.0 cm3 depending on model; re-grease every 100 km of travel or every 3 to 6 months. Basic dynamic load, static load and moment ratings are not published for the LRM series - we confirm them for this model through the RFQ.
Grade C preload takes up the internal clearance, so a two-carriage set like this resists tipping and rocking better than a lightly preloaded one - useful under any overhung component. The trade-off is tolerance: the stiffer system depends on flat, ground or finish-milled mounting surfaces and even bolt torque, or friction rises. Mind the service interval too: 100 km arrives quickly - a 200 mm stroke cycling once per second covers it in roughly three weeks of continuous running - so distance, not the calendar, usually triggers the next re-grease.
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 LRM12L2X220S10CH
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.