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60 Series
Home Deep Groove Ball Bearings 60 Series

604 ZZ Deep Groove Ball Bearing Extra Light Miniature Bearing | 4×12×4 mm

604 ZZ Deep Groove Ball Bearing Extra Light Miniature Bearing | 4×12×4 mm

The 604-ZZ Light Miniature Bearing is a Double Shielded Miniature Deep Groove Ball Bearing from the Extra Light series. Equipped with pressed steel shields on both sides (ZZ suffix), it provides effective protection against dust while maintaining low running torque. With its compact 4x12x4 mm dimensions, it is a fundamental component for space-sensitive precision mechanisms.

604 ZZ Deep Groove Ball Bearing 4×12×4 mm | ISO 60 Series – Extra Light | Double Shielded

Premium miniature precision bearing featuring the universal deep groove geometry. Engineered for reliable high-speed performance up to 38,000 r/min (Oil). The 604-ZZ is capable of supporting radial loads and light axial loads, making it ideal for small precision devices, micro-motors, and instrumentation.

604 ZZ Deep Groove Ball Bearing Double Shielded Extra Light Miniature Bearing

Comprehensive Applications

Ideally suited for a broad spectrum of precision and industrial equipment:

Small Motors & Drives
  • Micro DC Motors
  • Stepper Motors
  • Cooling Fans
  • Small Gearboxes
Precision Instruments
  • Encoders & Sensors
  • Laboratory Equipment
  • Gauges & Meters
  • Medical Hand Tools
Precision Machinery & Robotics
  • Robotic Arm Joints
  • CNC Tool Changers
  • Optical Scanners
  • Measuring Instruments
Consumer & Office Devices
  • Optical Drives (CD/DVD)
  • Printers & Scanners
  • Small Household Appliances
  • RC Models & Drones

Key Performance Features

01. Effective Dual-Shield Protection

The double non-contact steel shields guard both sides against dust and larger particles while retaining lubrication and maintaining minimal friction. This design is ideal where contamination resistance is needed without compromising low rotational torque.

02. Space-Saving Extra-Light Design

With its extra-light series construction, the bearing offers a compact cross-section and a reduced footprint, delivering reliable load capacity in tight spaces commonly found in miniature mechanisms and small electronic assemblies.

03. Smooth, Quiet Running Performance

Manufactured to standard industrial tolerances and available in optional precision grades, its optimized internal geometry ensures smooth rotation, low noise, and reduced heat buildup—supporting consistent operation in noise-sensitive and precision devices.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 60 Series – Extra Light
Basic Designation 604
Suffix ZZ (Both sides with steel shields)
Bore Diameter (d) 4 mm
Outer Diameter (D) 12 mm
Width (B) 4 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard / ABEC 3 (P6) Available
Cage Material Pressed Steel Ribbon
Dynamic Load Rating (Cʳ) 1.28 kN
Static Load Rating (C₀ʳ) 0.48 kN
Limiting Speed (Grease) 30,000 r/min
Limiting Speed (Oil) 38,000 r/min
Weight (approx.) 2.8 g

Interchange Part Numbers

Direct replacement for:

  • SKF: 604-2Z
  • NSK: 604 ZZ
  • FAG: 604-ZZ
  • NMB: MR104ZZ
  • NTN: 604ZZ

Design & Configuration

The 604-ZZ is equipped with double pressed steel shields on both sides. For applications that demand higher sealing against moisture or fine contaminants—with acceptable trade-off in friction—the rubber-sealed version (604-2RS) is also available.

"In environments with elevated dust or moisture, the 604-2RS with double rubber seals provides enhanced protection for extended bearing life."

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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.
Submit

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