HK-3520
NTNHK352035 × 42 × 20mm
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$14.01
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Geometry100%
35 × 42 × 20mm
Sealing100%
Open (no seal)
Load rating100%
Cr 24.8 kN / C₀r 47.5 kN
Speed100%
4,700 rpm (grease)
Specifications
| Bore diameter (d) | 35 mm |
| Outer diameter (D) | 42 mm |
| Width (B) | 20 mm |
| Dynamic load rating (C) | 24.8 kN |
| Static load rating (C₀) | 47.5 kN |
| Weight | 46 g |
| Max speed (grease) | 4,700 rpm |
| Max speed (oil) | 7,000 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
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
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
Where This Bearing Is Used
Industrial electric motors (10-50 HP)Gearboxes and speed reducersHeavy-duty pumpsConveyor systemsMachine tool spindlesAutomotive wheel hubsCentrifugal fansCompressors
Other Variants Available
Same bearing geometry — different seal and clearance configurations.
| SKF Part Number | Seal Type | Clearance |
|---|---|---|
| HK 3520 | Open (No Seal) | CN |