Airtac LGC Series Cross Roller Guide Rail LGC4R32
The AirTAC Airtac LGC Series Cross Roller Guide Rail LGC4R32 is a crossed roller guide using Ø4.0 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)
- SizeLGC4
- Roller diameterØ4.0 mm
- Rollers in cage32
- 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 LGC4R32
LGC4R32 is the roller cage subassembly from AirTAC's LGC crossed roller guide range, size 4. The code means exactly this: a 4.0 mm roller diameter series, delivered as a caged set of 32 rollers and nothing else. It is not a rail and not a complete guide - no rail is supplied, and no row-type letter or accuracy grade appears in the code because those belong to the complete guide the cage serves. Inside the cage, precision cylindrical rollers sit in alternating crossed orientations, giving line contact against the hardened V-raceways instead of the point contact of a ball guide.
The rollers in this cage are rated 1230 N per roller dynamic and 1170 N per roller static. Note that the static figure sits slightly below the dynamic one, the reverse of a ball guide, so do not size on the bigger number out of habit. Total capacity scales with the roller count rather than being a published per-guide figure. One consequence worth knowing before you fit it: the cage is not stationary. When the slide moves, the cage travels with it by roughly half the stroke, and high speed, eccentric load or vibration can drift it along the rail. Running several full strokes recentres it; a damaged cage is simply replaced with this spare.
Airtac LGC Series Cross Roller Guide Rail LGC4R32 Technical Specifications
| Model | Airtac LGC Series Cross Roller Guide Rail LGC4R32 |
|---|---|
| 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 | LGC4 |
| Roller diameter | Ø4.0 mm |
| Rollers per cage | 32 |
| Rail material | Stainless steel |
| Travel | Limited by rail length — the cage travels about half the stroke |
| Basic dynamic load rating C | 1230 N per roller |
|---|---|
| Basic static load rating C0 | 1170 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 LGC4R32
| LGC | LGC Series Crossed Roller Guide. |
|---|---|
| 4 | Size code — sets the roller diameter (Ø4.0 mm). |
| R32 | Cage carrying 32 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, 32 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 LGC4R32 Is Used
X-ray equipment slide overhaul
The slide section of an X-ray inspection unit runs short, stiff travels where cage drift shows up as image error. Swapping in a fresh size 4 cage and re-centring it over several full strokes restores the line-contact rigidity the original set was built around.
PCB drilling machine service
A dropped spindle slide on a PCB drilling machine can leave roller indentations in the raceway. Fitting a replacement 32-roller cage, then checking the raceways and re-adjusting with a dial indicator, is a far cheaper recovery than replacing the whole matched guide.
Optical bench stage rebuild
When an optical bench positioning stage is stripped for a lab upgrade, the crossed roller cage is the part to inspect and renew. A new cage slid into the existing size 4 guide, centred and re-preloaded, brings the stage back to spec without new rails.
Is the Airtac LGC Series Cross Roller Guide Rail LGC4R32 the Right Guide?
Confirm the form first: LGC4R32 is a cage spare, ordered to match the size and roller count of an existing LGC size 4 guide, not a complete assembly. Never mix rails from different sets, because accuracy is controlled as a matched set, so a replacement cage should be matched to the guide it serves. If your real need is a new guide, order the full code with row type (A three-row or B four-row), rail length taken from the manufacturer's maximum-stroke table with the working stroke set shorter than the maximum, and accuracy grade.
For travel beyond roughly half a metre, or where you want a sealed recirculating bolt-on unit, step across to AirTAC's LSH series instead; for light duties in a small envelope, LRM is the leaner choice. Whichever way you go, plan the fitted dial-indicator adjustment and the clearance method - adjusting screws, pressure plate or taper block - into the build time, since LGC accuracy is set in place, not out of the box.
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 LGC4R32 FAQ
LGC4R32 belongs to size 4 of the AirTAC LGC range: 4.0 mm roller diameter, 32 rollers per cage. Each roller is rated 1230 N dynamic and 1170 N static, per roller - never per guide. The cage code carries no row arrangement, no rail length and no accuracy grade, because those belong to the complete guide set the cage matches. Total guide capacity scales with the roller count through load distribution, but the catalogue does not publish a per-guide total, so send us your exact configuration for sizing.
Because LGC rollers do not recirculate, the cage travels with the slide by about half the stroke. High speed, hard acceleration, eccentric loading, vibration, misaligned rails or uneven preload can walk the cage further along the rail. The manufacturer's recovery is simple: run the slide through several full strokes to bring the cage back near centre. On vertical installations leave extra stroke margin, since gravity makes drift accumulate in one direction. If the cage is damaged rather than drifted, replace it - a spare cage is an inexpensive repair compared with a complete guide.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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