Koyo
CRSB-20

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. Sealed designs with internal thrust washers help extend service life under conditions of infrequent lubrication.

Koyo Needle Bearing Track Roller, Stud Type Uncaged, Series: CRSB Inch Series, 1-1/4 in Roller Diameter, 3/4 in Roller Width, 1/2 in Stud Diameter, 1-1/4 in Stud Length, 1/2-20 Thread, 5/8 in Thread Length, 3610 lbf Dynamic/3990 lbf Static Load, 2700 rpm Grease Maximum, -25 to 225 deg F, Sealed Closure, Hex Wrench Socket Head, Black Oxide

• 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
• Seals help retain lubricant and exclude foreign matter
• Hexagonal wrench socket in stud head for mounting
• 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

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