Airtac LRM Miniature Linear Guide LRM12L1X70S10CHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X70S10CHT 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 length70 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 LRM12L1X70S10CHT
LRM12L1X70S10CHT is a complete set: a 12 mm wide stainless-steel rail, 70 mm long with a 10 mm end-hole offset, carrying one long recirculating-ball carriage, fixed from below through the rail (the trailing T in the code). It is the stiffest-running version of this 70 mm configuration, combining medium preload C with high accuracy grade H.
Preload C pre-stresses the ISO 3290 G10 Japanese-made balls to remove clearance, which stiffens the carriage against play and tipping but makes it the least forgiving choice if the mounting surface is not flat - mount on a ground or finish-milled face and torque the screws correctly (M2: 58.8 N.cm into steel; M3: 196 N.cm). The double-lip seal and outer cover keep contamination out of the raceways, and the ball-retention design helps during handling, though a carriage fitted at an angle can still drop balls. Ambient temperature must not exceed 80 C, with peaks to 100 C. Mind the maintenance math: a 200 mm stroke cycling once per second covers the 100 km re-grease interval in roughly three weeks, so distance, not the calendar, usually sets the service schedule. Load and moment ratings are not published for LRM; we confirm per model through the RFQ.
Airtac LRM Miniature Linear Guide LRM12L1X70S10CHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X70S10CHT |
|---|---|
| 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 | 70 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 | 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 LRM12L1X70S10CHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 1X70 | 1 carriage on a 70 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, 70 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 LRM12L1X70S10CHT Is Used
Micro-dispensing valve slide
Positioning a micro-dispensing needle over a PCB in short index moves, where preload C keeps the needle point from wandering between dots.
Automated screwdriving slide
A small benchtop screwdriving unit presenting fasteners vertically, with the long carriage helping resist the tipping tendency of an overhung spindle.
Test-probe positioning rig
An electronics test fixture that lowers a probe card onto a connector, where bottom-mounted rails keep the working face unobstructed for loading.
Is the Airtac LRM Miniature Linear Guide LRM12L1X70S10CHT the Right Guide?
This code is the pick when play must be engineered out: one long carriage, medium preload C, high accuracy H, on a 70 mm bottom-mount rail 12 mm wide. If the machine later needs to carry a heavier or overhung load, LRM gives you no table to size from - step up to LSH, which publishes dynamic, static and moment ratings per carriage for proper calculation. Where travel is short and crossed-roller rigidity is the priority, LGC is the alternative. Confirm every item before ordering: set or carriage-only form, 12 mm rail width, carriage length and count, 70 mm rail length, preload C (stiffer but less tolerant of imperfect mounting), accuracy grade, bottom-mount direction - and the load rating, which we confirm for the specific model.
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 LRM12L1X70S10CHT FAQ
No - this is the complete set: the 70 mm, 12 mm wide stainless-steel rail and one long carriage, factory grease-filled (Kyodo Yushi PS No. 2) and supplied together. Handle with care: never strike the rail, never dismantle the carriage, and support it on inclined surfaces, because the carriage can slide under its own weight. The ball-retention design helps but does not guarantee against dropped balls if the carriage is angled on or off. Load and moment ratings are not published for LRM; we confirm them per model via the RFQ.
Rail width 12 mm; rail length 70 mm with a 10 mm end-hole offset; one long carriage; preload C (medium); accuracy H (high); bottom-mount rail fixing. Fixing screws torque to 58.8 N.cm (M2) or 196 N.cm (M3) into steel, with 39.2/29.4 N.cm (M2) and 127/98 N.cm (M3) for cast iron and aluminium. Ambient temperature limit is 80 C with transient peaks to 100 C; re-grease every 100 km of travel or every 3-6 months. Load and moment ratings are not published for the series - we confirm them for the specific model 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 LRM12L1X70S10CHT
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.