6203-2RZ Sealed Deep Groove Ball Bearing for Space-Optimized Designs & Precision Mechanisms | 17×40×12 Mm
The 6203-2RZ is a Double Rubber-Sealed Light Series Deep Groove Ball Bearing engineered for applications requiring effective sealing and reliable performance in limited spaces. Fitted with two low-friction rubber seals (2RZ) on both sides, it provides excellent protection against dust, moisture, and particulate ingress while retaining lubricant efficiently. With a 17 mm bore and a compact 12 mm width, this bearing is well-suited for small motors, precision gearboxes, and light industrial equipment where environmental resistance and smooth running are vital.
6203-2RZ Deep Groove Ball Bearing 17×40×12 mm | ISO 62 Series – Light | Double Rubber Sealed
Featuring a universal deep groove design, this sealed bearing supports quiet and consistent operation at speeds up to 16,000 r/min (Oil). Capable of handling moderate radial and light axial loads, the 6203-2RZ ensures lasting sealing performance in applications that demand durability and extended service in confined or contaminated environments.

Ideal for compact assemblies across multiple industries where sealing reliability and structural efficiency are essential:
Encoders and Sensors
Conveyor Rollers and Guides
Packaging Machinery
Textile Spindles and Bobbins
Printers, Scanners, and Paper Handling Units
Food Processors and Mixers
Vacuum Cleaners and Power Tools
Household Ventilation Systems
With dimensions of 17×40×12mm, this light series bearing provides an optimal balance of cross-section and load capacity, fitting seamlessly into space-sensitive designs.
Precision-ground chrome steel components and controlled internal clearance ensure low noise, minimal vibration, and smooth rotation across a wide speed range.
Non-contact rubber seals (2RZ) on both sides effectively exclude contaminants and retain lubrication, enhancing service life in dusty or humid conditions.
| Bearing Type | Single Row Deep Groove Ball Bearing |
| ISO Dimension Series | 62 Series – Light |
| Basic Designation | 6203 |
| Suffix | 2RZ (Double Rubber Non-Contact Seals) |
| Bore Diameter (d) | 17 mm |
| Outer Diameter (D) | 40 mm |
| Width (B) | 12 mm |
| Material (Races & Balls) | Chrome Steel (GCr15 / SAE 52100) |
| Precision Class | Standard / P5 Grade Available |
| Cage Material | Steel Stamped |
| Dynamic Load Rating (Cʳ) | 6.10 kN |
| Static Load Rating (C₀ʳ) | 3.15 kN |
| Limiting Speed (Grease) | 13,000 r/min |
| Limiting Speed (Oil) | 16,000 r/min |
| Weight (approx.) | 45 g |
Common manufacturer equivalents include:
The 6203-2RZ is equipped with double rubber non-contact seals, making it suitable for environments where low friction and contamination resistance are needed. For higher speed requirements, the double shielded version (6203-ZZ) may be considered.
"A dependable choice for electric motors, appliance drives, and light machinery, the 6203-2RZ delivers effective sealing and consistent performance where compactness and protection are critical."
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.
DetailsRequest a Quote for Ball Bearings
Scan to Wechat/Whatsapp :
