Airtac LRM Miniature Linear Guide LRM12L1X120S10BHT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X120S10BHT 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 length120 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 LRM12L1X120S10BHT
The trailing T in LRM12L1X120S10BHT changes one thing, and it matters: the rail bolts down from underneath. You get one 12 mm stainless-steel rail, 120 mm long, with a single long carriage running on it - preload B, accuracy H - but no screw heads on the top face. That leaves a clean, unbroken surface above the travel, useful when a bellows, guard or falling debris would otherwise sit over exposed fixings, or when the machine plate must present a flush top.
Design points carry over from the LRM platform: Japanese-made ISO 3290 G10 balls inside the carriage (a ball grade only, not a guide standard), a double-lip seal for oil scraping and dust exclusion, an outer cover over the seal strip, and a common rail profile shared by every LRM12 carriage. One handling note fits this mounting style well: on an inclined or vertical rail the carriage can slide off under its own weight, so hold it during fitting. Ambient limit is 80 C with brief peaks to 100 C. Load and moment ratings are not published for this series; the figure for your configuration is confirmed before ordering via our RFQ.
Airtac LRM Miniature Linear Guide LRM12L1X120S10BHT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X120S10BHT |
|---|---|
| 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 | 120 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 LRM12L1X120S10BHT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 1X120 | 1 carriage on a 120 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, 120 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 LRM12L1X120S10BHT Is Used
Machine-vision camera carrier
Mounting an inspection camera above a moving fixture; the under-rail fixings keep the optical path free of screw heads.
Laser focusing slide
A short-travel lens holder in a marking or alignment setup, where the rail bolts beneath the optic plate.
Fine-wire guide positioning
Setting the position of a wire guide pulley on small-diameter winding and spooling equipment.
Is the Airtac LRM Miniature Linear Guide LRM12L1X120S10BHT the Right Guide?
Bottom-mount fixing is the first box to tick: if you can only reach the rail from below, this is your code, and the equivalent top-mount set is LRM12L1X120S10BH. If your load is heavy or overhung, move to LSH, whose catalogue prints dynamic, static and moment ratings per carriage - real numbers to size with, which LRM cannot give you. Short travel with a need for crossed-roller stiffness points across to LGC. Tick the rest of the list before ordering: complete-set form, 12 mm rail width, long carriage, single block, 120 mm rail, light preload B (a trade of some rigidity for free running), accuracy H, bottom-mount direction. If you are matching a spare to an existing rail, the pairing code on both parts must agree. Ask us to confirm the load rating for this exact SKU first.
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 LRM12L1X120S10BHT FAQ
Rail width 12 mm; rail length 120 mm; end-hole offset 10 mm; one long carriage; preload B (light); accuracy H (high); bottom-mount fixing - the rail is bolted from below. Torque figures: M2 screws take 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3 screws take 196, 127 and 98 N.cm respectively. Ambient temperature ceiling is 80 C, brief peaks to 100 C. Regrease every 100 km of travel or every 3 to 6 months. Load, moment and running-parallelism figures are not published for LRM - we confirm the ratings for this model individually.
Choose LRM when the envelope is tight and the duty is light - this 12 mm, 120 mm set wins on footprint, smoothness and cost. Choose LSH when the load is substantial or cantilevered, because LSH publishes per-carriage dynamic, static and moment ratings you can calculate against; LRM publishes none, so its capacity can only be confirmed model by model through us. If the travel is short and stiffness matters more than envelope, LGC with crossed rollers is the third option. Send the load, travel and duty cycle in an RFQ and we will point you at the right series.
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 LRM12L1X120S10BHT
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.