Airtac LGC Series Cross Roller Guide Rail LGC3R16
The AirTAC Airtac LGC Series Cross Roller Guide Rail LGC3R16 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 cage16
- 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 LGC3R16
The LGC3R16 is a roller cage assembly: the cage-and-roller subassembly AirTAC lists separately in its parts table for size 3 LGC crossed roller guides. It carries 16 cylindrical rollers of 3.0 mm diameter set in alternating orientation, so adjacent rollers press against the hardened V-raceways at crossing angles and support load through lines rather than points. To be plain about the form: this is not a rail and not a complete guide, and no rail is supplied with it. Because LGC rollers do not recirculate, travel is set by rail length - a property of the complete guide, not of this cage.
Each roller is rated 640 N dynamic and 610 N static per roller; those figures belong to the rollers themselves, so total capacity rises with the count in the cage, 16 here. A spare cage earns its place because the cage travels with the slide by about half the stroke and can drift under vibration or eccentric load - several full strokes bring it back toward centre. If a cage is damaged instead, swapping it costs far less than replacing a complete guide.
Airtac LGC Series Cross Roller Guide Rail LGC3R16 Technical Specifications
| Model | Airtac LGC Series Cross Roller Guide Rail LGC3R16 |
|---|---|
| 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 | 16 |
| 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 LGC3R16
| LGC | LGC Series Crossed Roller Guide. |
|---|---|
| 3 | Size code — sets the roller diameter (Ø3.0 mm). |
| R16 | Cage carrying 16 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, 16 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 LGC3R16 Is Used
PCB drilling slide repair
A cage drift on a PCB drilling machine's slide shows up first as positional scatter in via holes. Swapping in a 16-roller LGC3R16 cage and running several full strokes restores centre at a fraction of the cost of a new guide.
Optical bench rebuild
When an optical bench slide stiffens or rumbles, the crossed roller cage is often the worn element. A size 3 cage with 16 rollers suits the short-travel stages under interferometers and lens test benches.
X-ray equipment slide servicing
X-ray equipment slides demand high accuracy over short travel. Service teams keep cage spares like the LGC3R16 on hand to replace rollers indented by an accidental drop.
Is the Airtac LGC Series Cross Roller Guide Rail LGC3R16 the Right Guide?
Buying a cage only makes sense once the form is settled: if you need a complete guide, order the full code (size, row type A or B, rail length, roller count, accuracy grade) rather than this part. If you are replacing or holding a spare for an existing LGC size 3 guide, match the cage by roller count - 16 here - because accuracy is controlled as a matched set and parts must agree with the guide design. For long travel, step across to AirTAC LSH, a recirculating ball guide; for light duty in a tight envelope, step down to LRM. LGC sits between: short travel, high rigidity.
Checklist: confirm the form (cage spare versus complete guide), match roller diameter and cage count together, confirm the row arrangement of the host guide, take rail length from the maximum-stroke table with the working stroke set shorter, choose grade H from stock or P to order, and pick the clearance method - adjusting screws, pressure plate or taper block. Plan the dial-indicator adjustment into the build time.
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 LGC3R16 FAQ
The rollers are size 3, so 3.0 mm in diameter, rated 640 N dynamic and 610 N static per roller. This cage carries 16 rollers. Row arrangement, rail length and accuracy grade are not defined by a cage code - they belong to the complete guide it serves. Total capacity scales with the roller count rather than being a single published figure; ask us to size a specific duty.
Neither. It is the roller cage assembly - rollers and cage only - listed as a spare in the manufacturer's parts table. No rail is supplied, and rails are not sold on their own in the LGC format. If you need a complete guide, order the full code with size, row type, rail length, roller count and accuracy grade.
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 LGC3R16
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