Airtac LRM Miniature Linear Guide LRM12L1X70S10BHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X70S10BHT 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
- 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 LRM12L1X70S10BHT
LRM12L1X70S10BHT is a complete miniature linear guide set built around a 12 mm wide stainless-steel rail, 70 mm long, with the 10 mm end-hole offset and one long recirculating-ball carriage. The trailing T in the code is the mounting direction: this rail bolts on from underneath, screws passing up through the rail into your base, so the top face stays clear as the running surface.
Preload code B puts a light internal pre-stress on the balls: clearance is taken up, so the carriage feels firmer than a free-running A-grade unit yet turns more freely than a medium-preload C. The ball-retention design keeps the ISO 3290 G10 Japanese-made balls in place during handling, the double-lip seal excludes dust and holds grease, and an outer cover protects the seal strip. Keep ambient temperature at or below 80 C (transient peaks 100 C). Because bottom-mount fixing hides the screws, alignment must be set before the base is closed up - establish the datum face and check it first. Load and moment figures are not published for LRM; ask us with your RFQ and we confirm them for this exact model.
Airtac LRM Miniature Linear Guide LRM12L1X70S10BHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X70S10BHT |
|---|---|
| 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 | 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 LRM12L1X70S10BHT
| 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. |
| 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, 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 LRM12L1X70S10BHT Is Used
Under-mounted optics carrier
On a benchtop laser test bench, a bottom-fixed rail keeps the top surface clear for a carrier holding filters or a beam-splitter mount over short travel.
Inkjet coder head slide
A compact industrial inkjet coder traversing its print head across cartons on a low-profile 12 mm rail fixed flush beneath the deck.
Diagnostic cartridge dispenser
A benchtop medical device indexing sealed assay cartridges under a reader, where hidden fixing screws simplify cleaning the exposed working deck.
Is the Airtac LRM Miniature Linear Guide LRM12L1X70S10BHT the Right Guide?
Start from the fixing: if your frame only gives access from below, this bottom-mount code is the right shape; otherwise pick the same 70 mm set in top-mount form. When the load becomes meaningful or overhung, move up to LSH, whose catalogue prints dynamic, static and moment ratings per carriage - numbers you can put into a calculation, unlike LRM. For very short travel needing crossed-roller stiffness, look at LGC. Checklist before you commit: set versus carriage, 12 mm rail width, long carriage, single block, 70 mm rail length, preload B and its trade-off (less slop, slightly more drag), accuracy H, bottom-mount direction - and confirm the load rating with us.
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 LRM12L1X70S10BHT FAQ
A complete set of one 12 mm stainless rail, 70 mm long, 10 mm end-hole offset, with a single long carriage - preload B (light), accuracy H (high), bottom-mount fixing. Tighten M2 screws to 58.8 N.cm in steel (39.2 cast iron, 29.4 aluminium) and M3 to 196 N.cm in steel (127 cast iron, 98 aluminium). Ambient limit is 80 C, transient peaks 100 C. Regrease every 100 km of travel or every 3-6 months, whichever comes first. Load and moment ratings are not published for the LRM series; we confirm the specific values for your model on request.
Choose LRM when the envelope is small, the duty is light and smooth short travel matters more than a published rating table. Choose LSH once the load is heavy or cantilevered, because LSH publishes dynamic, static and moment ratings per carriage that LRM does not - and never arrive at an LRM figure by scaling from LSH data. Send us the duty cycle and we will confirm which series and which rating apply.
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 LRM12L1X70S10BHT
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.