Airtac LRM Miniature Linear Guide LRM12L1X494S9.5BP
The AirTAC Airtac LRM Miniature Linear Guide LRM12L1X494S9.5BP 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 length494 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 LRM12L1X494S9.5BP
This code, LRM12L1X494S9.5BP, buys a complete LRM12 miniature linear guide: a 12 mm wide stainless-steel rail cut to 494 mm, one long carriage, light preload (B) and the precision accuracy grade (P), top-mounted, with end fixing holes offset 9.5 mm from the rail ends. The set ships assembled, rail and carriage together.
Light preload runs more freely than grade C and tolerates mounting imperfections better, at some cost in rigidity - a sensible pick for smooth, low-friction moves. The 494 mm length and 9.5 mm offset are the details worth noticing: stocked LRM12 rails run from 40 to 995 mm across 102 distinct lengths, so a non-round figure like 494 usually means someone matched an existing hole pattern, and the offset shifts the end holes to clear obstructions at the rail ends. Balls are Japanese ISO 3290 G10 grade (that grade covers the balls only); the carriage carries a double-lip seal under an outer cover; the ambient temperature limit is 80 C, peaks 100 C. The manufacturer publishes no load or moment ratings for LRM - we confirm them for this exact model before order. Ask us via the RFQ.
Airtac LRM Miniature Linear Guide LRM12L1X494S9.5BP Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L1X494S9.5BP |
|---|---|
| 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 | 494 mm |
| 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 LRM12L1X494S9.5BP
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 1X494 | 1 carriage on a 494 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, 494 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 LRM12L1X494S9.5BP Is Used
Fiber alignment stage
Light preload B lets the carriage glide with low running resistance, which a technician nudging a fiber coupler into position by hand will feel immediately.
Compact engraving gantry retrofit
A workshop engraver or small router retrofit where the existing 494 mm hole spacing is kept: the 9.5 mm end offset clears the side plates at each end of the travel.
Enclosed sample-transfer drawer
Inside a shielded enclosure where access is limited, the carriage ships retained on the rail - the ball-retention design limits dropped balls during a careful installation.
Is the Airtac LRM Miniature Linear Guide LRM12L1X494S9.5BP the Right Guide?
Preload B is the middle path: less running resistance than C and a more compliant feel than A, though the mounting surface still has to be ground or finish-milled for the rated travel accuracy. Where the load is genuinely substantial or cantilevered, the honest move is LSH, because LSH publishes per-carriage dynamic, static and moment ratings and LRM does not; for short travel needing crossed-roller stiffness, LGC fits better. Run the checklist: set or carriage-only form, 12 mm rail, long carriage, one block, 494 mm rail length, 9.5 mm end offset, light preload B, precision grade P, top-mount mounting, and the pairing code if this is a replacement on an existing rail - then get the load rating confirmed with us for this code.
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 LRM12L1X494S9.5BP FAQ
Rail width 12 mm; rail length 494 mm; one long carriage; preload B (light); accuracy P (precision); top-mount rail with fixing holes offset 9.5 mm from each end. M2 screws: 58.8 N.cm into steel, 39.2 into cast iron, 29.4 into aluminium; M3 screws: 196, 127 and 98 N.cm. Ambient temperature limit is 80 C with 100 C transient peaks. Re-grease after every 100 km of travel or every 3 to 6 months - note that a 200 mm stroke cycling once a second reaches 100 km in roughly three weeks, so distance usually binds before the calendar. Load and moment ratings are not published for LRM; we confirm them per model.
This is a complete set: the 494 mm stainless-steel rail arrives with the long carriage mounted on it - no separate rail purchase and no pairing code is involved. The 9.5 mm figure is the end-hole offset, the distance of the first fixing holes from the rail ends; buyers use it to match an existing hole pattern or to clear end plates. If you ever need a replacement carriage alone, be aware our carriage-only stock is very thin and most are ordered to request.
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 LRM12L1X494S9.5BP
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.