Koyo CR-8 KOYCR8

Track rollers (also known as cam followers) are characterized by their thick-walled outer rings that run directly on a track. The thick outer rings permit high load-carrying capability while minimizing both distortion and bending stresses.

Koyo Needle Bearing Track Roller, Stud Type Uncaged, Series: CR Inch Series, 1/2 in Roller Diameter, 0.344 in Roller Width, 0.19 in Stud Diameter, 1/2 in Stud Length, #10-32 Thread, 1/4 in Thread Length, 690 lbf Dynamic/645 lbf Static Load, 7000 rpm Grease Maximum, Black Oxide

• Screwdriver slot in head facilitates mounting
• Non-separable, sealed unit with outer ring, full complement of needle rollers, stud seals, self-lubricating resin internal thrust washers and stud-fastened retaining washer
• Re-lubrication via axially drilled hole through stud with cross-drilled holes in stud raceway and shank
• Recessed axial hole accepts standard nominal inch drive-type grease lubrication fitting
• Lubrication fitting plugs furnished to close off unused holes
• Tolerance limits for outer diameters of stud and outer ring refer to "single mean diameter"
• A close fit between stud and hole required for mounting
• Retaining washer should be firmly backed up by flat housing shoulder (perpendicular to the stud axis)
• Shoulder diameter should be atleast same size as minimum clamping diameter listed
• May be mounted with two thin lock nuts or nut and lock washer
• Without seal

• Catalog https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/Koyo_CR10_Catalog.pdf
• Catalog https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/Koyo_CR10_Catalog.pdf