624 ZZ Deep Groove Ball Bearing for Small Electric Motors | 4x13x5 mm
The 624-ZZ is a Premium Ultra-Miniature Deep Groove Ball Bearing engineered for precision applications requiring exceptional compactness. Featuring double metal shields (ZZ) on both sides, this metric bearing provides complete protection against dust and contamination while maintaining low rotational friction. With a 4mm bore, it is ideal for micro-motors, precision instruments, small mechanisms, and applications where minimal space and reliable performance are paramount.
624 ZZ Deep Groove Ball Bearing 4x13x5 mm | ISO 60 Series – Extra Light | Double Shielded
Premium ultra-miniature precision bearing featuring the universal deep groove geometry. Engineered for smooth, high-speed operation up to 39,000 r/min (Oil). The 624-ZZ is capable of supporting light radial loads and minimal axial loads, making it a critical component for compact drives, instrumentation, and miniature devices.

Ideally suited for applications where extreme miniaturization is essential:
The double, non-contact pressed steel shields offer robust dual-side protection against dust and particulates. This design effectively seals in lubrication, extends service life, and ensures minimal friction for sensitive, high-speed applications.
The extra light series design achieves an extremely small footprint, providing an optimal balance between performance and minimal space occupancy. Its ultra-compact dimensions are engineered for mechanisms with severe size constraints.
Manufactured to fine precision tolerances, with availability in higher grades (up to P5 precision grades). Its optimized internal geometry ensures exceptionally smooth, quiet, and stable rotation with minimal vibration, perfect for sensitive electronics and precision devices.
| Bearing Type | Single Row Deep Groove Ball Bearing |
| ISO Dimension Series | 62 Series – Extra Light |
| Basic Designation | 624 |
| Suffix | ZZ (Both sides with steel shields) |
| Bore Diameter (d) | 4 mm |
| Outer Diameter (D) | 13 mm |
| Width (B) | 5 mm |
| Material (Races & Balls) | Chrome Steel (GCr15 / SAE 52100) |
| Precision Class | Standard / P5 Grade Available |
| Cage Material | Pressed Steel Ribbon |
| Dynamic Load Rating (Cʳ) | 1.12 kN |
| Static Load Rating (C₀ʳ) | 0.50 kN |
| Limiting Speed (Grease) | 31,000 r/min |
| Limiting Speed (Oil) | 39,000 r/min |
| Weight (approx.) | 2.3 g |
Direct replacement for:
The 624-ZZ is equipped with double pressed steel shields as standard. For applications requiring protection against moisture or finer contaminants, configurations with double rubber contact seals (624-2RS) are available as an alternative.
"For the most compact devices requiring dust protection, such as miniature fans or micro-encoders, the 624-ZZ is the ideal solution."
The 6230 M is a heavy-duty, single-row deep groove ball bearing engineered for the most demanding industrial applications requiring high load capacity and reliable performance under continuous operation. Featuring a machined one-piece brass cage (M suffix) , this bearing offers superior strength, optimal ball guidance, and low friction, making it ideal for large electric motors, pumps, and heavy machinery where durability and high-speed stability are critical. Its open design allows for flexible lubrication strategies to suit specific operating conditions.
Details
The 628-2RS is a compact, single-row deep groove ball bearing engineered for space-constrained applications requiring reliable performance under light to moderate loads. Featuring dual RS-type rubber seals, this bearing provides effective protection against dust, moisture, and other contaminants while retaining lubrication for extended service life. With an 8 mm bore and 8 mm width, it is the preferred choice for small electric motors, power tools, and automation equipment where sealing and low friction are critical.
Details
The 6201-Z is a versatile, single-row deep groove ball bearing engineered for light industrial and automotive applications requiring dependable performance under moderate loads. Featuring a single Z-type metal shield on one side, this bearing provides effective protection against dust and solid contaminants while maintaining low frictional torque and allowing for relubrication if needed. With a 12 mm bore and 10 mm width, it is the preferred choice for small electric motors, pumps, and automotive auxiliary systems where durability and contamination resistance are critical for extended service life.
Details
The 6202-Z is a versatile, single-row deep groove ball bearing engineered for light industrial and automotive applications requiring dependable performance under moderate loads. Featuring a single Z-type metal shield on one side, this bearing provides effective protection against dust and solid contaminants while maintaining low frictional torque and allowing for relubrication if needed. With a 15 mm bore and 11 mm width, it is the preferred choice for small electric motors, pumps, and automotive auxiliary systems where durability and contamination resistance are critical for extended service life.
Details
The 6202-ZZ is a Versatile Double-Shielded Deep Groove Ball Bearing engineered for high-performance in a wide array of industrial and light machinery applications. Utilizing the industry-standard deep groove raceway design, this bearing efficiently manages substantial radial loads as well as light axial loads in both directions. With a 15 mm bore, 35 mm outer diameter, and an 11 mm width, it offers a balanced profile suitable for compact assemblies. Fitted with double metal shields (ZZ) to prevent contamination ingress, it is an ideal choice for electric motors, pumps, and general equipment requiring durable and low-maintenance operation.
Details
The 6203-Z is a Single-Shielded Deep Groove Ball Bearing designed for reliable performance in light industrial equipment and drive systems. Featuring the standard deep groove raceway geometry, this bearing effectively accommodates moderate radial forces and light axial loads in both directions. With a 17 mm bore, 40 mm outer diameter, and 12 mm width, it provides a robust cross-section suitable for compact machinery housings. Equipped with a single metal shield (Z) on one side for contamination resistance while maintaining accessibility for re-lubrication, it is an excellent choice for applications requiring balanced protection and maintenance flexibility .
Details
The 6203-ZZ is a Double-Shielded Deep Groove Ball Bearing engineered for reliable performance in electric motors and general industrial applications. Featuring the standardized deep groove raceway geometry, this bearing efficiently accommodates moderate radial loads and bidirectional axial loads in space-constrained assemblies. With a 17 mm bore, 40 mm outer diameter, and 12 mm width, it offers a balanced cross-section suitable for various mechanical housings. Equipped with double metal shields (ZZ) for effective contamination resistance while maintaining low friction operation, it is an ideal choice for applications requiring extended service life with minimal maintenance intervention .
Details
The 6204-Z is a Single-Shielded Deep Groove Ball Bearing engineered for dependable performance in pumps, gearboxes, and light industrial machinery. Featuring the standardized deep groove raceway geometry, this bearing effectively accommodates moderate radial loads and bidirectional axial loads in space-constrained assemblies. With a 20 mm bore, 47 mm outer diameter, and 14 mm width, it offers a robust cross-section suitable for various mechanical housings . Equipped with a single metal shield (Z) on one side for contamination resistance while maintaining accessibility for re-lubrication, it is an ideal choice for applications requiring balanced protection and maintenance flexibility.
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