Are You Moving Short Distances Fast?
You May Need Crossed Roller Bearings with ACC (Anti-Cage-Creep) Technology
Cross roller linear bearings with Anti-Cage Creep (ACC) technology are very important for applications that are highly dynamic or vertical orientation. Travel distances of 125 mm (5 inches) or less where high acceleration and deceleration occur are especially vulnerable to roller/cage assembly creep.
Excellent choice for highly dynamic or applications of vertical orientation.
Product Features
- Hardened Bearing Steel Rail Material
- Counter-bored with Thru Holes
- Polymer Cage/Roller Retainer with ACC
- Roller Diameters 3, 4, and 6 mm
- Stroke range from 25 – 316 mm
- Standard and Wide Rail versions available
One Bearing SET consists of:
- 4 rail pieces
- 2 roller/cage assemblies
End Screws are not required since the roller/cage assembly is captive via a rack and gear system.
Anti-Cage Creep Technology Eliminates Cage Creep
A polymer (POM material) is used for the roller cage (i.e., retainer) Integral to the cage is a small metal spur gear that mates with the metal gear rack integrated in each bearing rail.
This mechanism functions to maintain the original position of the roller/cage assembly within the rails. This is very important for applications where high dynamic action (high frequency) or vertical orientation. Vibration or high accel/decel can cause slippage between the roller and rail allowing the roller/cage assembly to move (creep) out of position. When this occurs the end result is reduced travel or damage to the roller/cage assembly as it may hit an end stop.
Product is most frequently used in applications requiring high rigidity, smooth motion, and high accuracy.
A few areas where this product is used are: machine tools, semiconductor equipment, and laboratory instruments.
Common Dimensional Data
| Assembly Width | -B- | 18 mm |
| Assembly Width | -C- | 8 mm |
| Roller Diameter | -D- | 3 mm |
| Rail Hole Dia. | -k- | 3.2 mm |
| Rail Hole Thread | -m- | M4 |
| Rail Hole Counter-bore dia. | -p- | 6.0 mm |
| Rail Hole Counter-bore depth | -r- | 3.2 mm |
| Rail Hole Diameter | -d- | 3.5 mm |
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