Airtac LGC Series Cross Roller Guide Rail LGC6R40
The AirTAC Airtac LGC Series Cross Roller Guide Rail LGC6R40 is a crossed roller guide using Ø6.0 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)
- SizeLGC6
- Roller diameterØ6.0 mm
- Rollers in cage40
About the Airtac LGC Series Cross Roller Guide Rail LGC6R40
LGC6R40 is a roller cage: the free cage carrying 40 crossed, alternating-orientation rollers for an AirTAC LGC size 6 guide. It is not a rail and not a complete guide, and no rail is supplied - the stainless steel rails arrive with the complete LGC guide order. Fitting it means opening the guide by the manufacturer's method, centring the cage by stroking, and re-adjusting the assembly with a dial indicator.
Per roller, the figures are 3175 N dynamic and 2550 N static - and the static is the smaller number here, the opposite of a ball guide where C0 runs roughly one and a half times the dynamic rating. Anyone moving to LGC from recirculating ball guides should drop the habit of sizing on the bigger figure. For scale, the 6.0 mm rollers in this cage deliver about twenty-five times the per-roller dynamic rating of the 1.5 mm rollers in LGC1, from only a four-fold change in diameter. With 40 rollers sharing the load, capacity scales with the count; the catalogue states ratings per roller, so no per-guide total is published.
Airtac LGC Series Cross Roller Guide Rail LGC6R40 Technical Specifications
| Model | Airtac LGC Series Cross Roller Guide Rail LGC6R40 |
|---|---|
| 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 | LGC6 |
| Roller diameter | Ø6.0 mm |
| Rollers per cage | 40 |
| Rail material | Stainless steel |
| Travel | Limited by rail length — the cage travels about half the stroke |
| Basic dynamic load rating C | 3175 N per roller |
|---|---|
| Basic static load rating C0 | 2550 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 LGC6R40
| LGC | LGC Series Crossed Roller Guide. |
|---|---|
| 6 | Size code — sets the roller diameter (Ø6.0 mm). |
| R40 | Cage carrying 40 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, 40 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 LGC6R40 Is Used
Preload adjustment service
When a guide is re-set for higher rigidity using a pressure plate or taper block, the cage is removed and refitted; a spare LGC6R40 keeps the service moving if the original proves worn or damaged.
Fixture slides on the production line
Short-travel fixture slides on a factory line run size 6 crossed rollers; a cage contaminated by swarf is swapped during changeover and re-centred by stroking the slide through full cycles.
Post-drop recovery
After a slide assembly is dropped, roller indentations in the raceway cost accuracy and possibly smoothness. Replacing the cage - and inspecting the raceways carefully - is the corrective route.
Is the Airtac LGC Series Cross Roller Guide Rail LGC6R40 the Right Guide?
Buy this only if an existing size 6 LGC guide needs its cage renewed - the form test is LGC plus size digit plus R plus roller count, nothing else. Match the 6.0 mm roller diameter and the 40-roller count to the original, and keep everything within the matched set; mixing rails from different sets voids the accuracy guarantee. Step across to AirTAC LSH if travel beyond roughly half a metre, or a sealed bolt-on assembly, is the real need, and down to LRM for light-duty small-envelope duty. For LGC itself: choose rail length from the maximum-stroke table with the working stroke set shorter, pick the clearance method - adjusting screws, pressure plate or taper block - early because it affects the surrounding machining, and note that grade H is stocked while grade P is to order. Allow build time for the dial-indicator adjustment.
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 LGC6R40 FAQ
40 rollers of 6.0 mm diameter; dynamic rating 3175 N per roller; static rating 2550 N per roller. Both ratings are per roller - the total scales with the roller count and is not a published figure. This cage code has no rail length, no row arrangement and no accuracy grade; those live in the complete-guide code. Rails are stainless steel and stocked from 20 to 600 mm.
It is the cage-and-roller subassembly that sits between the V-raceways of an LGC guide - crossed rollers giving stiff line contact instead of the point contact of balls. It is not a rail, not a complete guide, and no rail is supplied with it. AirTAC lists cages separately because they are the low-cost service item: a drifted cage often recovers by stroking the slide through full cycles, and a damaged one is replaced without discarding the rails.
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Covers non-human-caused product damage.
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