Airtac LRM Miniature Linear Guide LRM12L2X170S10BH
The AirTAC Airtac LRM Miniature Linear Guide LRM12L2X170S10BH 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 length170 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 LRM12L2X170S10BH
LRM12L2X170S10BH pairs a 170 mm, 12 mm wide stainless-steel rail with two long carriages, 10 mm end-hole offset, high accuracy grade H and light preload B, mounted from the top. As a complete set it arrives with both carriages on the rail, pre-filled with Kyodo Yushi PS No. 2 grease.
Light preload sits between the free-rolling A grade and the firm C grade: it takes out most of the internal play and damps chatter while keeping running drag moderate, and it forgives mounting-surface finish better than C does. Long carriages are specified as freely as standard ones across this range - availability of the L format is at least as deep - so choosing them to fight a tipping load costs nothing in sourcing. The series design kit comprises a common rail profile, ball retention, ISO 3290 G10 Japanese balls for roundness and wear, double-lip seals and an outer cover over the screw line. Keep ambient temperature at or below 80 C, peaks to 100 C. Load and moment ratings are not published for LRM; we confirm them for the specific model before you order - just raise the RFQ.
Airtac LRM Miniature Linear Guide LRM12L2X170S10BH Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12L2X170S10BH |
|---|---|
| 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 | 170 mm |
| 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 LRM12L2X170S10BH
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| L | Long carriage. |
| 2X170 | 2 carriages on a 170 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, 170 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 LRM12L2X170S10BH Is Used
Small-parts sorting gate slider
A sorting gate that flicks small pressed parts between chutes on a short slide. Light preload B damps the chatter of rapid direction reversals without the drag penalty that medium preload would add.
Gauge and comparator fixture
A measuring fixture carrying a dial comparator over machined parts. Grade H accuracy keeps the trace straight across the 170 mm stroke, and the light preload takes up play so readings repeat.
Jig rebuild and retrofit
An older assembly jig being retrofitted with a guided sliding stop. A 12 mm rail slips into the existing 145 to 170 mm envelope with finish-milled seats, and preload B covers the slight unevenness a rebuild leaves behind.
Is the Airtac LRM Miniature Linear Guide LRM12L2X170S10BH the Right Guide?
Two long carriages on one 170 mm rail give you a wider effective bearing span than two standard blocks, which is worth trying before you resize anything. Compare form factors when you shop: LRM carriage-only codes carry no rail and use a pairing letter, while this set is self-contained. For loads that are heavy or overhung, LSH is the correct step up - its catalogue lists per-carriage dynamic, static and moment ratings you can design against, unlike LRM. For brief travels needing crossed-roller stiffness, LGC fits better. Checklist for this code: 12 mm rail, 170 mm length, two L blocks, light preload B, accuracy H, top-mount fixing, and a load rating we confirm for the model on request.
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 LRM12L2X170S10BH FAQ
A size 12 set: 12 mm stainless rail, 170 mm long, carrying two long carriages with 10 mm end-hole offset, light preload (B), high accuracy (H), top-mount. Fix with M3 screws at 196 N.cm (steel), 127 N.cm (cast iron) or 98 N.cm (aluminium). Ambient temperature limit is 80 C, brief peaks to 100 C. Re-grease after each 100 km of travel or every 3 to 6 months with PS No. 2. Load and moment ratings are not published for LRM; ask us and we confirm them for this exact model.
Yes, as carriage-only LRM codes, but the choice of spare carriages we carry is small, so most replacement blocks are a special order - plan ahead. The ball-retention design stops the balls scattering during normal handling, yet the manufacturer warns that fitting a carriage at an angle or swapping it in a hurry can still drop balls; a dummy rail makes field swaps safer. When you order a replacement, the pairing letter must match the rail. For load confirmation on any carriage, send us the RFQ.
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 LRM12L2X170S10BH
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.