628 ZZ Deep Groove Ball Bearing Low Friction Bearing for Industrial Machinery | 8x24x8 mm
The 628-ZZ is a Standard Deep Groove Ball Bearing designed for robust and durable performance in a variety of mechanical applications. Featuring double metal shields (ZZ) on both sides, this metric bearing offers reliable protection against dust and debris while ensuring smooth operation with low friction. With an 8mm bore, it is a versatile and commonly used component in electric motors, industrial equipment, power transmission systems, and other machinery requiring a dependable and readily available bearing solution.
628 ZZ Deep Groove Ball Bearing 8x24x8 mm | Standard Series | Double Shielded
A dependable and widely utilized bearing built with the universal deep groove geometry. Engineered for consistent performance at speeds up to 30,000 r/min (Oil). The 628-ZZ is capable of supporting moderate to high radial loads, making it a standard choice for general industrial applications, motor repairs, and OEM designs.

Ideally suited for a broad range of general industrial and machinery applications:
The dual non-contact pressed steel shields provide effective two-sided sealing against dust and larger airborne contaminants. This design helps to retain lubrication for extended service intervals while maintaining low operational torque.
As part of the standard bearing series, the 628-ZZ delivers a strong balance of load capacity and durability. Its common dimensions make it an excellent choice for both new designs and as a replacement part in a wide array of equipment.
Manufactured to established industrial tolerances to ensure consistent quality (up to P5 precision grades). The reliable deep groove design promotes stable and smooth rotation, suitable for continuous operation in motors, gearboxes, and conveyor systems.
| Bearing Type | Single Row Deep Groove Ball Bearing |
| ISO Dimension Series | Standard Series |
| Basic Designation | 628 |
| Suffix | ZZ (Both sides with steel shields) |
| Bore Diameter (d) | 8 mm |
| Outer Diameter (D) | 24 mm |
| Width (B) | 8 mm |
| Material (Races & Balls) | Chrome Steel (GCr15 / SAE 52100) |
| Precision Class | Standard / P5 Grade Available |
| Cage Material | Pressed Steel Ribbon |
| Dynamic Load Rating (Cʳ) | 5.40 kN |
| Static Load Rating (C₀ʳ) | 2.60 kN |
| Limiting Speed (Grease) | 24,000 r/min |
| Limiting Speed (Oil) | 30,000 r/min |
| Weight (approx.) | 19.0 g |
Direct replacement for:
The 628-ZZ comes standard with double pressed steel shields for effective contamination exclusion. For applications in damp or oily environments, variants with rubber contact seals (628-2RS) are offered to provide enhanced sealing, albeit with slightly higher starting torque.
"For general industrial motors and drives, the 628-ZZ provides a reliable and cost-effective solution with good contamination protection."
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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