628-2RS Miniature Deep Groove Ball Bearing For Compact Mechanisms | 8×24×8 mm
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.
628-2RS Miniature Deep Groove Ball Bearing 8×24×8 mm | Compact Series – Light | Double Sealed
This precision bearing utilizes a classic deep groove raceway geometry, enabling stable high-speed performance up to 22,000 r/min (Grease) with RS seals. The 628-2RS is engineered to accommodate radial loads as well as light axial loads in both directions, making it exceptionally suited for compact applications in power tools, office equipment, medical devices, and instrumentation where consistent, low‑friction operation is required.

Ideal for a wide range of light‑duty and precision mechanical systems:
Despite its miniature dimensions (8×24×8 mm), the 628‑2RS delivers a dynamic load rating of 3.45 kN, ensuring reliable operation in applications with limited space. The deep raceway grooves allow it to handle both radial and moderate axial forces.
Double RS‑type contact rubber seals provide a tight barrier against dust, moisture, and fine particulates from both sides. This design retains lubricant effectively and prolongs bearing life in harsh environments, while the low‑friction seal lip maintains efficiency.
Manufactured to ABEC‑1 precision standards with a pressed steel cage, the 628‑2RS ensures quiet, vibration‑free operation. Its optimized internal geometry supports speeds up to 22,000 r/min with grease, making it ideal for high‑rpm miniature drives and spindles.
| Bearing Type | Single Row Deep Groove Ball Bearing |
| ISO Dimension Series | Compact Series – Light (ISO 18 series equivalent) |
| Basic Designation | 628 |
| Suffix | 2RS (Both sides with rubber seals) |
| 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 (P0 / ABEC 1); P5/P6 grades available |
| Cage Material | Pressed Steel |
| Dynamic Load Rating (Cʳ) | 3.45 kN |
| Static Load Rating (C₀ʳ) | 1.96 kN |
| Limiting Speed (Grease) | 22,000 r/min |
| Limiting Speed (Oil) | 28,000 r/min |
| Weight (approx.) | 0.012 kg |
Direct replacement for:
The 628‑2RS is equipped with double RS‑type contact rubber seals as standard, delivering enhanced protection against moisture and fine dust in demanding environments. For applications where even lower friction is required, the open variant (628) or metal‑shielded version (628‑2Z / 628ZZ) is also available.
"The 628‑2RS is a versatile miniature bearing that combines high‑speed capability with reliable sealing, ideal for compact drives and precision mechanisms where space is at a premium."
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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