Home > Track Runner Bearings > Support Rollers
Brand: SKFBearing Type: Support Roller NATVInside Diameter: 17.00mmOutside Diameter: 40.00mmWidth: 20.00mm
NATV17-PPA SKF Support roller with flange rings 17x40x20
NATR design support rollers are fitted with a needle roller and cage assembly, while NATV design support rollers have a full complement of needle rollers. The outer rings of both bearing designs are guided axially by pressed-on flange rings. The narrow gap between the flange rings and the outer ring serves as a gap-type seal. Both designs are also available with an axial sliding ring on both sides, identified by the designation suffix PPA. The axial sliding rings are made of polyamide 66. In the radial direction, the sliding ring forms a narrow labyrinth seal with the outer ring, to protect against coarse contaminants. In the axial direction, the sliding ring serves as a contact seal to reliably retain grease in the bearing. This improves the lubrication conditions in the bearing, keeps friction and heat low, and extends grease service life.
NATV17-PPA-SKF dimension chart - all dimensions in mm unless indicated.
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