51219
Double direction thrust ball bearings for axial loads in both directions. Used where bidirectional axial loads must be supported.
SKF5120945 × 75 × 24mm
In stock
$29.95
Partmatch price
Order 5+ for 5% off · 10+ for 10% off
+ $9.99 shipping · Ships within 2–3 business days
Free returns within 30 days · Ships from EU warehouse
Secure checkout
Verified supplier
30-day returns
VisaMastercardAmex
Not ready to buy? Save this part →
Specifications
| Bore diameter (d) | 45 mm |
| Outer diameter (D) | 75 mm |
| Width (B) | 24 mm |
| Dynamic load rating (C) | 21.1 kN |
| Static load rating (C₀) | 48 kN |
| Weight | 252 g |
| Max speed (grease) | 3,400 rpm |
| Max speed (oil) | — |
Equivalents Across Brands
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
Where This Bearing Is Used
Double Direction Thrust — Common Applications
- Machine tool spindles (bidirectional)
- Hydraulic cylinders
- Vertical shaft assemblies
- Precision positioning equipment
- Screw drives
- Heavy machinery pivots
- Industrial gearboxes
Machine toolsHydraulicsHeavy industryPrecision engineering
Medium (45mm bore) — Typical Uses
- Industrial electric motors (10-50 HP)
- Gearboxes and speed reducers
- Heavy-duty pumps
- Conveyor systems
- Machine tool spindles
- Automotive wheel hubs
- Centrifugal fans
- Compressors