1021
1000 & 59000 Series Thin Section Thrust Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
1021
Basic Information
Bearing type
Ball
System of measurement
Metric
Weight
1.1 kg
Seal type
Open
For load direction
Thrust
Main Dimensions
Bore diameter
105 mm
Bore diameter tolerance
-0.02mm to 0
Outside diameter
140 mm
Outside diameter tolerance
-0.025mm to 0
Width
25 mm
Width tolerance
+0.025mm to -0.3mm
Chamfer dimension
0.5 mm
Ball & Washer Dimensions
Housing washer inner diameter
105.2 mm
Performance
Temperature range
-30° to 110 °C
Axial dynamic load rating
4520 lbf
Axial static load rating
42131 lbf
Limiting speed
2.5 X 1000 rpm
Lubrication
Required
Materials
Ring material
52100 Chrome Steel
Ball material
52100 Chrome Steel
Cage material
Chrome Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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1021 Bearing Product Overview & Core Advantages
The 1021 thrust ball bearing is a metric system, single-direction thrust bearing engineered for applications requiring high axial load capacity. Manufactured from 52100 Chrome Steel for both rings and balls, it delivers exceptional durability and wear resistance. Its core advantage lies in its ability to accommodate high axial dynamic and static loads (4520 lbf and 42131 lbf respectively) while maintaining a compact cross-section with a 25 mm width. This design is ideal for scenarios demanding reliable performance under substantial thrust forces in a constrained space.
1021 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1021 | Standard model number for a metric thrust ball bearing. |
| Open (Seal Type) | The bearing is unsealed, allowing for customized lubrication strategies but requiring a clean operating environment. |
1021 Bearing Structural Features & Performance Benefits
- High Axial Load Capacity: The robust Chrome Steel construction and optimized ball raceway geometry enable it to handle significant axial dynamic and static loads.
- Precision Ground Components: Tolerances on the bore diameter (-0.02mm to 0) and outside diameter (-0.025mm to 0) ensure precise fitment and reliable operation.
- Chrome Steel Cage: The cage material provides strength and stability at the specified limiting speed of 2,500 rpm.
- Wide Temperature Range: Suitable for operation in temperatures from -30°C to 110°C, offering versatility across various industrial environments.
- Compliance: The bearing is compliant with ROHS and REACH regulations, ensuring environmental safety.
1021 Bearing Typical Application Areas
This thrust ball bearing is ideally suited for machinery and systems that experience high axial loads, including:
- Automotive: Thrust applications in transmissions and steering mechanisms.
- Industrial Machinery: Heavy-duty thrust loads in machine tools, presses, and gearboxes.
- Power Transmission: Applications where axial positioning and load carrying are critical.
- General Engineering: Any assembly requiring a compact, high-capacity component for single-direction axial support.
