Airtac LGC Series Cross Roller Guide Rail LGC2R19
The AirTAC Airtac LGC Series Cross Roller Guide Rail LGC2R19 is a crossed roller guide using Ø2.0 mm precision rollers. Rollers are held in a cage in alternating orientation between hardened V-raceways, giving line contact instead of point contact — much higher rigidity and accuracy than a ball guide of similar size. It does NOT recirculate, so travel is set by rail length and the cage travels about half the stroke.
- SeriesLGC
- Supplied asRoller cage assembly (spare part)
- SizeLGC2
- Roller diameterØ2.0 mm
- Rollers in cage19
- 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 LGC Series Cross Roller Guide Rail LGC2R19
A drifted or damaged cage can idle an otherwise sound set of rails, which is why AirTAC sells the cage on its own and why this spare costs a fraction of a complete guide. LGC2R19 is the size 2 roller cage: nineteen 2.0 mm rollers held in alternating crossed orientation so each presses on the hardened V-raceway in line contact. It is supplied as the cage-and-roller subassembly only - not a rail, not a complete guide, and no rail is included.
The rollers are rated 292 N dynamic and 290 N static per roller, always per roller: capacity depends on how the load distributes across the nineteen contacts, so the catalogue gives no per-guide total and neither do we. Nineteen sits mid-range in the size 2 list, which runs from 6 to 36. After replacement, stroke the slide end to end a few times to settle the cage near its mid-position, then verify the adjustment with a dial indicator - and never pair it with rails from a different set, since accuracy is controlled as a matched set.
Airtac LGC Series Cross Roller Guide Rail LGC2R19 Technical Specifications
| Model | Airtac LGC Series Cross Roller Guide Rail LGC2R19 |
|---|---|
| Series | LGC Series Crossed Roller Guide |
| Supplied as | Roller cage assembly (spare part) |
| Construction | Crossed precision rollers in a cage, NON-recirculating, line contact |
| Size code | LGC2 |
| Roller diameter | Ø2.0 mm |
| Rollers per cage | 19 |
| Rail material | Stainless steel |
| Travel | Limited by rail length — the cage travels about half the stroke |
| Basic dynamic load rating C | 292 N per roller |
|---|---|
| Basic static load rating C0 | 290 N per roller |
| Mounting screws | Per catalogue tightening-torque table |
| Lubrication | Per catalogue; adjust clearance and preload before use |
| Interchangeability | LGC carriages fit LGC rails of the same model, matched by the pairing code |
Specifications follow the official AirTAC LGC catalogue. Load ratings are stated PER ROLLER, not per guide — total capacity depends on how many rollers the cage carries, which is why the roller count is part of the order code. Maximum stroke and tightening torques are given in the catalogue tables; ask us for the figure for your size. This item is a roller cage only — neither a rail nor a complete guide.
Model Code: Airtac LGC Series Cross Roller Guide Rail LGC2R19
| LGC | LGC Series Crossed Roller Guide. |
|---|---|
| 2 | Size code — sets the roller diameter (Ø2.0 mm). |
| R19 | Cage carrying 19 rollers. |
| -H / -P | Accuracy grade: H high, P precision. |
What Is In The Box
| This order | Roller cage assembly (spare part) |
|---|---|
| Rail | No — not supplied with this item |
| Rollers and cage | Yes, 19 rollers |
This is the cage-and-rollers subassembly sold as a spare. It is NOT a rail and NOT a complete guide. 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 LGC Series Cross Roller Guide Rail LGC2R19 Is Used
PCB drilling line spares
A PCB drilling machine on three shifts wears its cage faster than its rails; fitting a fresh 19-roller spare at planned intervals protects the matched stainless steel rails, which are the expensive part.
Optical bench drift recovery
If vibration or eccentric loading has shifted the cage on an optical bench slide, first try stroking it end to end a few times to bring it back; if indentation damage is suspected, replace the cage instead of running it.
X-ray slide overhaul
A dropped guide can leave rolling-element indentations that quietly ruin accuracy; inspecting the rollers at overhaul and fitting a sound cage shields the rest of the matched set.
Is the Airtac LGC Series Cross Roller Guide Rail LGC2R19 the Right Guide?
A cage purchase is a repair decision, so verify the host guide's code ends R19 in size 2 before ordering - any other count will not suit the set. If you are specifying a complete guide from scratch, pick the size by roller diameter and roller count together, remembering that roller diameter drives capacity far faster than it drives physical size: from LGC1 to LGC2 the roller grows from 1.5 to 2.0 mm while the per-roller dynamic rating jumps from 125 N to 292 N. Rail length comes from the maximum-stroke table with the working stroke set short; travel beyond a stocked rail's reach belongs on LSH, and light compact duty on LRM. Grade H guides are stocked, P is to order, and the final accuracy is set as much by the on-machine indicator adjustment as by the grade - so leave room in the build schedule for it.
Quick checklist
- ✓ Complete set, carriage only, or rail only?
- ✓ Worst-case moment, not just straight load
- ✓ Travel length and mounting space
- ✓ Stroke shorter than the rail allows for cage travel
- ✓ Clearance method: screws, plate or taper block
- ✓ 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 Centre the roller cage on the rail during assembly.
- check Adjust with a dial indicator over the full stroke.
- check Never mix rails from different sets — accuracy is matched per set.
- check Installation by qualified personnel per AirTAC docs.
Airtac LGC Series Cross Roller Guide Rail LGC2R19 FAQ
This is a size 2 crossed roller cage with 19 rollers of 2.0 mm diameter. Ratings: 292 N dynamic and 290 N static, each per roller and never per guide. The cage code carries no rail length, row arrangement or accuracy grade. Total capacity of the assembled guide depends on load distribution across all nineteen rollers and is not a published figure - share your load case with us and we will help size the complete set.
Neither. It is the roller cage subassembly - nineteen rollers in a caged, alternating crossed pattern - and no rail is included, so it cannot serve as a rail or as a guide on its own. AirTAC lists cages separately so a damaged cage can be swapped without discarding matched rails. After fitting, run the slide through several full strokes to settle it, then re-check the adjustment with a dial indicator; remember the cage finishes each move in a new position, since it travels about half the stroke with the slide.
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 LGC Series Cross Roller Guide Rail LGC2R19
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