Airtac LGC Series Cross Roller Guide Rail LGC3R22
The AirTAC Airtac LGC Series Cross Roller Guide Rail LGC3R22 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 cage22
- 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 LGC3R22
This code, LGC3R22, buys a crossed roller cage for size 3 LGC guides - 22 rollers of 3.0 mm diameter at crossing angles - and nothing else. It is not a rail, it is not a complete guide, and no rail is supplied. Accuracy on the LGC series is controlled as a matched set, so a replacement cage must be seated and adjusted in place with a dial indicator, and rails must never be mixed between sets because that voids the accuracy guarantee.
Per roller, the figures are 640 N dynamic and 610 N static. Note that static sits slightly below dynamic on LGC - the reverse of a ball guide, where static is the larger number - so sizing habits carried over from recirculating designs do not transfer. With 22 rollers the host guide has plenty of contact lines; total capacity scales with the count rather than appearing as one catalogue number, and we can help size a specific duty.
Airtac LGC Series Cross Roller Guide Rail LGC3R22 Technical Specifications
| Model | Airtac LGC Series Cross Roller Guide Rail LGC3R22 |
|---|---|
| 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 | 22 |
| 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 LGC3R22
| LGC | LGC Series Crossed Roller Guide. |
|---|---|
| 3 | Size code — sets the roller diameter (Ø3.0 mm). |
| R22 | Cage carrying 22 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, 22 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 LGC3R22 Is Used
Semiconductor inspection stage service
Wafer inspection stages run short, repetitive strokes where cage drift accumulates. Holding an LGC3R22 spare lets a technician restore a metrology slide within a single shift.
Recovery from cage drift
Vibration, eccentric loading or uneven preload can push a cage off centre. If several full strokes will not settle it back, a replacement 22-roller cage, fitted and adjusted in place, is the fix.
Optical test instrument retrofit
Servicing the focus stage of an optical test instrument? The 3.0 mm rollers and 22-roller cage of the LGC3R22 suit the short, rigid moves these machines demand - as a spare, not a first build.
Is the Airtac LGC Series Cross Roller Guide Rail LGC3R22 the Right Guide?
A cage code answers one question: is this a replacement or spare for a size 3 LGC guide whose design already fixes roller diameter, row arrangement and cage count? If yes, LGC3R22 with 22 rollers matches that design. If no, you need a complete guide ordered as size, row type, rail length, count and grade - and a rail on its own is not an LGC order format. When the application needs long travel, choose LSH; when the duty is light and the envelope small, LRM is the lighter step.
Before ordering, confirm: the cage count agrees with the host guide, the rail length comes from the maximum-stroke table with the working stroke deliberately shorter, the accuracy grade is H (stock) or P (to order), and the clearance method matches the machine - adjusting screws, pressure plate or taper block. Fitting and dial-indicator adjustment are part of the job, not extras.
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 LGC3R22 FAQ
Exactly these: 22 rollers of 3.0 mm diameter, dynamic rating 640 N per roller, static 610 N per roller. No rail length, no row arrangement and no accuracy grade are attached to a cage code - the host guide defines them. Total guide capacity scales with roller count rather than appearing as one catalogue number, so route sizing questions to us.
Only one whose design specifies a 22-roller cage, and only as a like-for-like replacement - never mixed with rails from another set, since accuracy is controlled as a matched set. Fitting means removing an end screw, inserting the cage, re-centring it by stroking and adjusting with a dial indicator; it is not a bolt-on part.
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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 LGC3R22
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