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62 Series
Home Deep Groove Ball Bearings 62 Series

6203-ZZ Deep Groove Ball Bearing For Electric Motors and Industrial Machinery | 17×40×12 mm

6203-ZZ Deep Groove Ball Bearing For Electric Motors and Industrial Machinery | 17×40×12 mm

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 .

6203-ZZ Deep Groove Ball Bearing 17x40x12 mm | Standard 6200-Series | Double Metal Shields (ZZ)

A widely specified bearing variant featuring the optimized deep groove raceway design. Engineered for dependable and quiet operation at speeds up to 18,000 r/min (Grease) . The 6203-ZZ delivers substantial load capacity within a compact envelope, making it a preferred component for electric motors, pumps, automotive systems, and light industrial machinery where comprehensive protection against contaminants is required .

6203-ZZ Deep Groove Ball Bearing For Electric Motors and Industrial Machinery | 17×40×12 mm

Comprehensive Applications

Ideal for industrial equipment and rotating assemblies:

Industrial Machinery
  • Machine Tool Spindles (Light Duty)
  • Textile Machinery Components
  • Packaging Line Feed Mechanisms
  • Conveyor Rollers and Transfer Points
Consumer & Light Industrial
  • Power Tool Armatures
  • Lawn and Garden Equipment
  • Small Agricultural Machinery
  • Snowmobiles and ATVs
  • Household Appliances
Electric Motors & Drives
  • Cooling Fan and Blower Motors
  • Pump and Compressor Units
  • Light-Duty Gearbox Output Shafts
  • General Purpose AC/DC Motor Rotors
Automotive & Auxiliary Systems
  • Auxiliary Drive Pulleys
  • Idler Wheels and Tensioners
  • HVAC Blower Motors
  • Alternators and Generators

Key Performance Features

01. Optimized Load-Carrying Geometry

The 6203-ZZ incorporates precision-engineered raceway curvatures that maximize ball contact area for enhanced radial load distribution. Manufactured from high-quality chrome steel (SAE 52100), it delivers consistent mechanical performance and extended fatigue life under continuous operating conditions.

02. Comprehensive Double-Shield Protection

Features dual Z-type metal shields on both sides, providing effective protection against dust, dirt, and larger particles while retaining the initial grease lubrication . This non-contact shielding configuration minimizes frictional resistance, allowing for high-speed operation in environments where re-lubrication is not intended or practical .

03. Precision Manufacturing Standards

Produced to ISO dimensional tolerances with carefully controlled raceway surface finish . The precision-ground balls and optimized internal clearance ensure reduced frictional torque, minimal vibration characteristics, and quiet operational performance, contributing to reliable long-term service life in continuous-duty applications .

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 62 Series – Light Duty Series
Basic Designation 6203
Suffix Double Metal Shield (ZZ)
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 ABEC-1 (P0) / ABEC-3 (P6) Available
Cage Material Pressed Steel (Standard)
Dynamic Load Rating (Cʳ) 9.55 – 10.6 kN
Static Load Rating (C₀ʳ) 4.6 – 4.8 kN 
Limiting Speed (Grease) 17,000 – 18,000 r/min
Limiting Speed (Oil) 21,000 – 22,000 r/min 
Weight (approx.) 66 g

Interchange Part Numbers

Direct replacement for:

  • SKF: 6203-ZZ
  • NSK: 6203ZZ
  • FAG: 6203.2ZR
  • NTN: 6203ZZ
  • Generic6203ZZ, 6203-2Z, 6203-ZZ, 6203 2Z 

Design & Configuration

The 6203-ZZ is supplied as a pre-lubricated, double-shielded unit ready for immediate installation . The low-friction metal shields provide excellent protection in clean to moderately contaminated environments while maintaining high-speed capability. For applications requiring contact seals for wet or heavily contaminated conditions, rubber-sealed variants (2RS) are also available. If you require specific internal clearances (C3 for high-speed applications) , alternative lubricants, or custom packaging configurations, please consult our technical sales team for availability.

"For electric motors, pumps, and general industrial machinery requiring comprehensive protection with minimal maintenance, the 6203-ZZ delivers reliable performance with its double-shielded configuration. Its standardized dimensions and balanced load capacity make it a versatile, cost-effective solution for a wide range of applications."

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Request a Quote for Ball Bearings

Request a Quote for Ball Bearings
Please submit your inquiry below for detailed product and pricing information. We will get back to you within 24 hours.
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