DualVee® WSSVAC series guide wheels are linear guide bearings with double row angular contact ball bearing arrangement. Precision ground 90º vee inside or outside surfaces can be employed to support loads and provide smooth and quiet motion. Use with DualVee® guide track for linear motion. All stainless steel components and internally lubricated with Lubecon Ultratherm 2000 ultra high vacuum grease for operation inside vacuum environments down to 10-9 mbar.