LFR5201-12 KDD, LFR5201-12 NPP Track Rollers categorized as double-row, double sealed / shielded, radial, deep groove ball bearings, and closed with rubber seals(NPP) or metal shields(KDD) to protect the bearing from dust or any possible contamination, lubricated with grease as well.
Name: Track Rollers, Guide Rollers, Guide Way Bearings
Item: LFR5201-12 KDD, LFR5201-12 NPP
Type: Double-sealed NPP / Double-shielded KDD
Size: 12 mm x 12 mm x 35 mm x 15.9 mm x 15.9 mm x 21.75 mm
Shaft Diameter (dw): 12 mm
Bore Diameter (d): 12 mm
Outer Diameter (D): 35 mm
Outer Ring Width (C): 15.9 mm
Inner Ring Width (B): 15.9 mm
Center Diameter (A): 21.75 mm
Radial Play: C0 / C2 / C3
Rings/Balls Material: Chrome steel 100Cr6
Cage Material: Nylon(PA66+25%GF)
Seal Materil: NBR+SPCC
Shield Material: SPCC
Lubrication: Chevron SRI grease with 30% to 40% filled
Bearing Brand: Neutral
Special Note: Outer ring with Gothic Arch Raceway, not circular raceway