Material
It is constructed from high-quality 52100 chromium steel, selected for its excellent mechanical properties. Through controlled heat treatment, the steel attains a hardness of HRC 58-62, ensuring strong wear resistance and structural integrity under consistent radial loads. The material’s fine grain structure also enhances its ability to withstand cyclic stress without cracking.
Features
• Double-sided metal shields ("ZZ"): These rigid shields form an effective barrier against dust, dirt, and debris, safeguarding internal lubrication and reducing the need for frequent cleaning or re-lubrication in dry environments.
• Stable load handling: Designed to accommodate moderate radial loads, it maintains performance stability even during prolonged operation, making it suitable for continuous-duty equipment.
• Smooth rotation: Precision-ground raceways and optimized ball geometry minimize friction, enabling quiet operation and reducing energy loss in small motors or rotating components.
• Compact form factor: With an outer diameter of approximately 15mm, it fits easily into tight assemblies such as small gearboxes or miniature drive systems.
Applications
• Small electric motors: Used in fans, pumps, and blowers for household appliances like air purifiers and mini humidifiers.
• Power tools: Integrated into handheld devices such as mini drills and sanders, supporting consistent rotational motion.
• Toy mechanisms: Employed in remote-controlled cars, robotic kits, and mechanical toys requiring reliable, low-maintenance bearings.
• Office equipment: Found in paper shredders, small printers, and scanner rollers to ensure smooth material handling.

Part Number | 602ZZ |
Characteristics |
System of Measurement | Metric |
Bearing Type | Ball |
Seal Type | Shielded |
Inner Ring Type | Standard |
For Load Direction | Radial |
Construction | Single Row |
Ball Qty | 7 |
Tolerance Class | ABEC1 |
Dimensions |
Bore Dia | 2 mm |
Bore Dia Tolerance | -0.008mm to 0 |
Outer Dia | 7 mm |
Outer Dia Tolerance | -0.008mm to 0 |
Width | 3.5 mm |
Width Tolerance | -0.12mm to 0 |
Ball Dia | 1.2 mm |
Radial Clearance | 0.005mm to 0.01 mm |
Radial Clearance Trade No | MC3 |
Material |
Ring Material | Chrome Steel |
Ball Material | Chrome Steel |
Cage Material | Carbon Steel |
Shield Material | Carbon Steel |
Performance |
Dynamic Radial Load | 74 lbf |
Static Radial Load | 23 lbf |
Max Speed (X1000 rpm) | 60 |
Temperature Range | -30° to 110 °C |
Properties |
Lubrication | Required |
RoHS | Compliant |
REACH | Compliant |
Weight | 0.6 g |