Airtac LRM Miniature Linear Guide LRM12L2X445S10BPT
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X445S10BPT 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 length445 mm
- AccuracyP — precision 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 LRM12L2X445S10BPT
One stainless-steel rail, 12 mm wide and 445 mm long, with two long recirculating-ball carriages already fitted - that is what the LRM12L2X445S10BPT delivers as a set from AirTAC's LRM miniature guide series. The trailing T in the ordering code sets the rail mounting to bottom-mount: fixing holes open through the underside, the arrangement to pick when the deck above the rail cannot be drilled from the top or the screw heads must sit out of sight. Rail end holes sit 10 mm in from each end.
Light preload (grade B) leaves the ball path barely stressed, so the carriages glide with minimal drag while still taking up play - a sensible choice where the load is steady rather than reversing. Accuracy is grade P (precision). The design points that matter here: LRM carriages share one common rail profile, a ball-retainer keeps the balls captive during handling (though fitting at an angle can still drop them), the balls themselves are Japanese-made ISO 3290 G10 for roundness, a double-lip seal scrapes oil and excludes dust, and an outer cover shields the seal strip. Ambient temperature must stay at or below 80 C, with transient peaks no higher than 100 C. Load and moment ratings are not published for LRM; tell us your arrangement through the RFQ form and we will confirm the figures for this exact model.
Airtac LRM Miniature Linear Guide LRM12L2X445S10BPT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X445S10BPT |
|---|---|
| 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 | 445 mm (spliced sections) |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision 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 LRM12L2X445S10BPT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X445 | 2 carriages on a 445 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. |
| P | P — precision grade. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 445 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 LRM12L2X445S10BPT Is Used
Wafer inspection microscope stage
A small inspection microscope scanning across a wafer piece needs short, steady travel in a cramped enclosure; a 12 mm bottom-mount rail fixes cleanly under the stage plate and grade P accuracy supports repeatable positioning under the objective.
Laser alignment carriage in a beam path
Aligning a beam delivery line calls for a carriage that parks repeatably without jolt; light preload keeps drag low so a fine adjuster screw moves the mirror mount smoothly, and the under-mounted rail keeps the beam line unobstructed.
Microplate transport in a lab analyzer
Long carriages support the plate at both ends and two blocks on one rail resist tipping as the plate reaches out over the sample tray; the 80 C ceiling keeps this guide clear of the heated read head.
Is the Airtac LRM Miniature Linear Guide LRM12L2X445S10BPT the Right Guide?
Because LRM publishes no dynamic, static or moment ratings, a load you can calculate against means stepping up to LSH, whose catalogue lists per-carriage ratings - the right move when the load is substantial or overhung. When travel is short and the priority is crossed-roller rigidity rather than ball smoothness, look at LGC instead. For this code, confirm each line: form is a complete set; rail width 12 mm; carriage length long; two carriages; rail length 445 mm; preload B light (easier sliding, slightly more play than grade C); accuracy P; mounting bottom-mount; and have us confirm the load rating before you commit.
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 LRM12L2X445S10BPT FAQ
Rail width 12 mm, rail length 445 mm, two long carriages, light preload (B), precision accuracy (P), bottom-mount rail with 10 mm end-hole offset. Fixing screws torque to 196 N.cm in steel, 127 N.cm in cast iron and 98 N.cm in aluminium (M3 figures; M2 equivalents are 58.8, 39.2 and 29.4 N.cm). Ambient temperature must not exceed 80 C, with peaks to 100 C, and the grease should be topped up every 100 km of travel or every 3 to 6 months. Basic dynamic load, static load and moment ratings are not published for LRM - we confirm them per model on request.
Yes - this is a complete set: one stainless rail, 445 mm long, with two long carriages factory-fitted and pre-greased with Kyodo Yushi PS No. 2. Mounting screws, a seat ground or finish-milled to specification, and any brackets are on your side. If a carriage is ever damaged, note that carriage-only replacements are thinly represented in our listings, so most swaps are an order item - a dummy rail helps fit a carriage without dropping balls.
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 LRM12L2X445S10BPT
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.