653

OpenCNVerified match
Koyo663/65382.55 × 146.05 × 41.27mm
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$182.82
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Specifications

Bore diameter (d)82.55 mm
Outer diameter (D)146.05 mm
Width (B)41.27 mm
Dynamic load rating (C)98 kN
Static load rating (C₀)65 kN
Weight1100 g
Max speed (grease)3,000 rpm
Max speed (oil)4,500 rpm

Why This Match Is Correct

✓Exact dimensional match (bore, OD, width)
✓Load ratings within tolerance
✓Seal type verified via manufacturer tables
✓Speed rating compatible

Equivalents Across Brands

BrandPart NumberSealClearanceStatus
Koyo663/653OpenCNEquivalent
FAG653OpenCNCurrent
FAG663OpenCNProbable
FAG663/653OpenCNProbable
Koyo653OpenCNCurrent
Koyo663OpenCNEquivalent
NTN4T-663/653OpenCNEquivalent
NTN653OpenCNCurrent
NTN663OpenCNEquivalent
SKF653OpenCNCurrent
SKF663OpenCNEquivalent
SKF663/653OpenCNEquivalent
Timken653OpenCNCurrent
Timken663OpenCNProbable
Timken663/653OpenCNProbable

Seal Type

Open (No Seal)

No seals or shields. Allows external lubrication and cooling. Lowest friction, highest speed capability.

Best forClean environments with external lubrication systems. High-speed applications where heat dissipation matters.
Avoid forDirty, dusty, or wet environments. Applications without planned lubrication maintenance.
Examples
  • Machine tool spindles
  • Gearboxes with oil bath lubrication
  • High-speed precision equipment

Internal Clearance

Normal Clearance (CN)

Standard radial internal clearance. Suitable for most applications under normal operating conditions.

Best forGeneral-purpose use. Normal temperatures, standard fits, moderate speeds.
TemperatureUp to ~70°C operating temperature

Other Variants Available

Same bearing geometry — different seal and clearance configurations.

SKF Part NumberSeal TypeClearance
663/653Open (No Seal)CN