SKF offers five standard V-ring designs:
- VR1/VA, the most common type of V-ring, has a standard cross section and straight back sideface. VR1/VA is typically used to protect bearing arrangements in gearboxes, electric motors and drives.
- VR2/VS, that has a standard low cross section, tapered back face and wide body, providing a firm hold on the shaft. VR2/VS is commonly used in agricultural and automotive applications.
- VR3/VL, designed with a very compact axial cross section. VR3/VL is commonly used in confined spaces to replace labyrinth seals.
VR4/VE, designed as secondary seals for heavy-duty applications where the primary seal has to be protected against water and/or solid contaminants. The design has the largest cross section of any V-ring designs and also permits the largest axial displacements. VE/VR4 is available in the diameter range 300 to 2 010 mm (11.811 to 79.134 in.).
- VR6/VRME, a heavy-duty, large diameter V-ring for applications with large axial displacements. VR6/VRME can be located axially and radially on the shaft using a standard band clamp. VR6/VRME is primarily designed to protect high-speed bearing arrangements in rolling mills, paper-making and other large machine applications. The VR6/VRME is similar in shape to the VR5/VRM, except that it does not have the extension to the rear of the body section. It retains the saddle feature for axial and radial location on the shaft with a band clamp. VR6/VRME is available on a made-to-order basis.
V-rings from SKF are available for the shaft diameter ranges listed in the table 1. If the shaft diameter lies in the appropriate range for two V-rings, the larger V-ring should always be chosen. In addition, special sizes and designs, including split versions, can be made to order. Contact your SKF sales representative for sizes outside the standard range.