Airtac LGC Series Cross Roller Guide Rail LGC3R36
The AirTAC Airtac LGC Series Cross Roller Guide Rail LGC3R36 is a crossed roller guide using Ø3.0 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)
- SizeLGC3
- Roller diameterØ3.0 mm
- Rollers in cage36
- 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 LGC3R36
LGC3R36 is the roller cage spare for AirTAC size 3 LGC crossed roller guides: the cage body carrying 36 hardened 3.0 mm rollers set in alternating crossed orientation, so adjacent rollers touch the V-raceways on line contact rather than the point contact of balls. This is a subassembly only. It is not a rail, it is not a complete guide, and no rail is supplied - if you need rail and cage together, order a complete LGC guide code instead. The rollers in an LGC guide do not recirculate, so travel on the finished assembly is finite and set by the rail length.
Each roller in this cage is rated 640 N dynamic and 610 N static, both per roller - note that the static figure is the smaller of the two, the reverse of a ball guide, so do not size on the bigger number out of habit. A 36-roller cage gives many load-sharing positions along its length, and total guide capacity scales with the roller count rather than being a single published figure. Two practical points: a drifted cage can usually be brought back near centre by running the slide through several full strokes, and if a cage is genuinely damaged, this spare is an inexpensive repair compared with replacing the whole matched assembly.
Airtac LGC Series Cross Roller Guide Rail LGC3R36 Technical Specifications
| Model | Airtac LGC Series Cross Roller Guide Rail LGC3R36 |
|---|---|
| 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 | LGC3 |
| Roller diameter | Ø3.0 mm |
| Rollers per cage | 36 |
| Rail material | Stainless steel |
| Travel | Limited by rail length — the cage travels about half the stroke |
| Basic dynamic load rating C | 640 N per roller |
|---|---|
| Basic static load rating C0 | 610 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 LGC3R36
| LGC | LGC Series Crossed Roller Guide. |
|---|---|
| 3 | Size code — sets the roller diameter (Ø3.0 mm). |
| R36 | Cage carrying 36 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, 36 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 LGC3R36 Is Used
PCB drilling machine cage replacement
A drilling spindle slide that has developed rough spots or visible cage drift can often be returned to service by fitting a fresh 36-roller size 3 cage, keeping the original matched rails if they are still sound.
Optical bench stage rebuild
After contamination or a knock leaves indentations in the rollers of an optical bench stage, swapping the cage restores the crossed-roller geometry without scrapping the whole guide.
Precision measuring machine overhaul
During scheduled servicing of a measuring instrument slide, a spare cage on the shelf turns a drifted or damaged cage from a machine-down problem into a short planned repair.
Is the Airtac LGC Series Cross Roller Guide Rail LGC3R36 the Right Guide?
Confirm three things before ordering: the size (3 means 3.0 mm rollers), the roller count of the cage already in your machine (36 here), and that you need the cage alone rather than a complete guide. Accuracy in an LGC guide is controlled as a matched set, so never pair this cage with rails taken from a different set and never assume rails from separate sets are interchangeable - if the rails themselves are worn or damaged, replace the complete assembly as a matched unit. Remember the cage walks along the rail by roughly half the slide stroke, so check the maximum-stroke table for your rail and keep the working stroke shorter, with extra margin on vertical mounts. Step across to the LSH recirculating series when travel is long or a sealed, bolt-on carriage suits the machine better; step down to LRM when the duty is light and the envelope tight. Expect fitted adjustment on the finished guide: it is set up in place with a dial indicator, not dropped on and bolted down.
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 LGC3R36 FAQ
Size 3 means 3.0 mm roller diameter. Each roller is rated 640 N dynamic and 610 N static, and both figures are per roller. This cage carries 36 rollers. As a cage-only part it has no rail length, row arrangement or accuracy grade of its own - those belong to the complete guide code it fits. Because the ratings are per roller, total capacity scales with the roller count and is not a figure we publish, so send us your load, stroke and mounting details for sizing.
Neither. It is the roller cage subassembly - the cage body with its 36 crossed rollers - listed separately by the manufacturer so a drifted or damaged cage can be renewed without buying a full guide. No rail is supplied and no rail length applies to this code. If you need the rail and cage together as a matched set, order a complete LGC guide code instead.
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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 LGC3R36
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