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62 Series
Home Deep Groove Ball Bearings 62 Series

624 ZZ Deep Groove Ball Bearing for Small Electric Motors | 4x13x5 mm

624 ZZ Deep Groove Ball Bearing for Small Electric Motors | 4x13x5 mm

The 624-ZZ is a Premium Ultra-Miniature Deep Groove Ball Bearing engineered for precision applications requiring exceptional compactness. Featuring double metal shields (ZZ) on both sides, this metric bearing provides complete protection against dust and contamination while maintaining low rotational friction. With a 4mm bore, it is ideal for micro-motors, precision instruments, small mechanisms, and applications where minimal space and reliable performance are paramount.

624 ZZ Deep Groove Ball Bearing 4x13x5 mm | ISO 60 Series – Extra Light | Double Shielded

Premium ultra-miniature precision bearing featuring the universal deep groove geometry. Engineered for smooth, high-speed operation up to 39,000 r/min (Oil). The 624-ZZ is capable of supporting light radial loads and minimal axial loads, making it a critical component for compact drives, instrumentation, and miniature devices.

624 ZZ Deep Groove Ball Bearing Double Metal Shielded Miniature Bearing

Comprehensive Applications

Ideally suited for applications where extreme miniaturization is essential:

Micro Motors & Actuators
  • Coreless Micro DC Motors
  • Tiny Vibration Motors
  • Small Sensor Rotors
  • Miniature Gearmotor Output Shafts
Precision Instruments & Optics
  • Optical Encoders & Sensors
  • Laser Diode & Lens Adjusters
  • Laboratory & Medical Micro-Pumps
  • Telescope Focus Drives
Small Mechanisms & Hobby
  • High-End Watch Movements
  • Precision RC Model Parts
  • Small Automated Valves
  • Model Aircraft Servos
Electronics & Office
  • Small Cooling Fans for Electronics
  • Printer/Scanner Carriage Guides
  • Data Drive Spindle Motors
  • Cash Dispenser Mechanisms

Key Performance Features

01. Design & Protection

The double, non-contact pressed steel shields offer robust dual-side protection against dust and particulates. This design effectively seals in lubrication, extends service life, and ensures minimal friction for sensitive, high-speed applications.

02. Ultra-Compact Design (Extra Light Series)

The extra light series design achieves an extremely small footprint, providing an optimal balance between performance and minimal space occupancy. Its ultra-compact dimensions are engineered for mechanisms with severe size constraints.

03. High-Speed & Smooth Operation

Manufactured to fine precision tolerances, with availability in higher grades (up to P5 precision grades). Its optimized internal geometry ensures exceptionally smooth, quiet, and stable rotation with minimal vibration, perfect for sensitive electronics and precision devices.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 62 Series – Extra Light
Basic Designation 624
Suffix ZZ (Both sides with steel shields)
Bore Diameter (d) 4 mm
Outer Diameter (D) 13 mm
Width (B) 5 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard / P5 Grade Available
Cage Material Pressed Steel Ribbon
Dynamic Load Rating (Cʳ) 1.12 kN
Static Load Rating (C₀ʳ) 0.50 kN
Limiting Speed (Grease) 31,000 r/min
Limiting Speed (Oil) 39,000 r/min
Weight (approx.) 2.3 g

Interchange Part Numbers

Direct replacement for:

  • SKF: 624-2Z
  • NSK: 624 ZZ
  • FAG: 624 ZZ
  • NMB: MR84ZZ
  • NTN: 624ZZ

Design & Configuration

The 624-ZZ is equipped with double pressed steel shields as standard. For applications requiring protection against moisture or finer contaminants, configurations with double rubber contact seals (624-2RS) are available as an alternative.

"For the most compact devices requiring dust protection, such as miniature fans or micro-encoders, the 624-ZZ is the ideal solution."

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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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