Airtac LRM Miniature Linear Guide LRM12L2X170S10BHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X170S10BHT 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
- PreloadB — light 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 LRM12L2X170S10BHT
LRM12L2X170S10BHT is a complete miniature linear guide set: a 12 mm wide stainless-steel rail, 170 mm long, carrying two long recirculating-ball carriages, shipped assembled and pre-greased. The trailing T in the code is what matters here - the rail is bottom-mount, so the clamping screws are driven from underneath the rail face.
That mounting direction earns its place inside closed frames and enclosures where no headroom exists above the guide. Because two carriages share this rail, mark the datum on the same side for both; the manufacturer notes this measurably improves running accuracy on multi-carriage rails. Each carriage runs on Japanese-made ISO 3290 G10 balls (a ball grade, not a standard for the guide assembly), behind a double-lip seal for oil scraping and dust exclusion, with an outer cover protecting the seal strip. Ambient temperature limit is 80 C, peaks 100 C. One handling note: on an inclined rail an unheld carriage can slide off under its own weight. LRM publishes no load or moment ratings, so we confirm the figures for this model through your RFQ.
Airtac LRM Miniature Linear Guide LRM12L2X170S10BHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X170S10BHT |
|---|---|
| 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 | B — light 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 LRM12L2X170S10BHT
| 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. |
| B | B — light 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 LRM12L2X170S10BHT Is Used
Wafer inspection fixture
A small semiconductor lab fixture translating a wafer segment under a microscope objective. Bottom-mounting keeps the top surface completely clear for the workpiece clamp and the lighting path.
PCB test-head traverse
An electronics assembly line where a spring-pin test head drops onto boards at a fixed station. Two long carriages share the tipping load of the overhanging head, and the outer cover keeps solder dust away from the seal strip.
Laser marker head carriage
A compact marking machine guiding its lens barrel along the beam axis. High accuracy grade H keeps the head on a straight path, and the 80 C ambient ceiling is the one published environmental figure to respect next to the laser module.
Is the Airtac LRM Miniature Linear Guide LRM12L2X170S10BHT the Right Guide?
Prepare the mounting surfaces first: they must be ground or finish-milled to reach the rated travel accuracy, and the catalogue lists the required edge distances, shoulder heights and corner radii as a set of five rows without tying them to named sizes - check the whole set before machining. For the purchase itself, LRM12 is the most deeply stocked size we carry. If the load is heavy or overhung, move up to LSH, which publishes per-carriage dynamic, static and moment figures you can actually calculate with; LRM publishes none. Short travel demanding crossed-roller stiffness points to LGC. Checklist before you commit: complete set, 12 mm rail, long carriages x2, 170 mm length, light preload B (easier running, a little less rigid), H accuracy, bottom-mount - and confirm the load rating with us 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 LRM12L2X170S10BHT FAQ
It is a 12 mm wide rail, 170 mm long, with two long carriages, light preload B, high accuracy grade H and bottom-mount rail, 10 mm end-hole offset. Torque M2 screws to 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3 screws to 196, 127 and 98 N.cm. Keep ambient temperature at or below 80 C, transient peaks to 100 C. Re-lubricate every 100 km of travel or every 3 to 6 months, whichever comes first. Note that LRM has no published load or moment ratings - we confirm them per model when you enquire.
Pick LRM when the envelope is tight and the duty is light precision positioning - a 12 mm rail with long carriages at 170 mm travel is exactly its territory. Pick LSH when the load is substantial or cantilevered and you need published per-carriage dynamic, static and moment ratings to size the drive: LSH has that table, LRM does not, and scaling between the two series is not valid. If in doubt, send us the load, moment and stroke with the RFQ and we will confirm the right series and the per-model rating before you order.
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 LRM12L2X170S10BHT
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.