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63 Series
Home Deep Groove Ball Bearings 63 Series

635-ZZ Deep Groove Ball Bearing For Motors & Precision Devices | 5x19x6 mm

Double Shielded 635ZZ Ball Bearing (5x19x6 mm) for Robotics, Cooling Fans, and Encoder Systems
635-ZZ Replacement Bearing compatible with SKF 635-ZZ, NSK 635ZZ, and FAG 635 ZZ
High Speed 36,000 RPM 635-ZZ Bearing - Chrome Steel Construction with P5 Precision Grade
Miniature 5mm Bore 635 ZZ Bearing - Compact Deep Groove Design for Small Motors and Precision Devices
635-ZZ Ball Bearing with Double Pressed Steel Shields for Dust and Debris Protection

635-ZZ Deep Groove Ball Bearing For Motors & Precision Devices | 5x19x6 mm

The 635-ZZ is a High-Performance Miniature Deep Groove Ball Bearing designed for applications demanding reliable operation with superior contamination resistance. Equipped with double metal shields (ZZ) on both sides, this metric bearing delivers effective protection against airborne particles and debris, preserving internal lubrication and ensuring smooth, long-lasting performance. With a compact 5mm bore, it serves as an essential component in small electromechanical devices, precision instruments, and compact motor assemblies where space-saving design and dependable shielding are critical.

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635 ZZ Deep Groove Ball Bearing 5×19×6 mm | ISO 63 Series – Extra Light | Double Shielded

This precision miniature bearing features the versatile deep groove raceway design, engineered for reliable high-speed operation up to 36,000 r/min (Oil). The 635-ZZ deep groove ball bearing supports considerable radial loads and accommodates moderate axial loads in both directions. Its compact 5mm bore and integrated double-shield protection make it an excellent choice for small precision instruments, compact electric motors, and applications exposed to dusty or particulate-laden operating conditions.

635-ZZ Deep Groove Ball Bearing Double Shielded Miniature Ball Bearing For Motors & Precision Devices

Comprehensive Applications

Ideal for various precision and industrial applications requiring both compact size and environmental resilience:

High-Speed & Medical Equipment
  • Micro Motors & Spindles
  • Laboratory & Diagnostic Devices
  • Dental & Surgical Hand Tools
  • Centrifugal Pumps
Electric Motors & Drives
  • Small DC & Brushless Motors
  • Servo & Stepper Motors
  • Encoder & Feedback Systems
  • Automotive Auxiliary Motors
Automation & Robotics
  • Robotic Arm Joints
  • Linear Actuators
  • Precision Guide Rolls
  • Optical & Sensing Equipment
Consumer & Office Devices
  • Computer Cooling Fans
  • Printers & Scanners
  • Small Appliances
  • Advanced Hobbyist Models (RC/Drones)

Key Performance Features

01. Effective Dual-Shield Sealing

Steel shields installed on both sides create a reliable barrier against dust and particulate ingress without direct contact with inner components. This non-contact design retains lubricant effectively, extends service intervals, and maintains low rotational torque for efficient operation.

02. Robust Load Handling in Compact Size

Manufactured to light series dimensions (5×19×6 mm), this deep groove ball bearing supports substantial radial loads and accommodates moderate axial loads from both directions. Its versatile design offers strength and durability within a minimal footprint, suitable for tightly engineered assemblies.

03. Precision & High-Speed Capable

Available with precision grades up to ABEC 5 (P5), the 635-ZZ features optimized internal geometry for reduced friction, minimal vibration, and consistent operation at elevated rotational speeds. This ensures smooth performance in demanding high-speed applications.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 63 Series – Extra Light
Basic Designation 635
Suffix ZZ (Double Steel Shields)
Bore Diameter (d) 5 mm
Outer Diameter (D) 19 mm
Width (B) 6 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard / P5 Grade Available
Cage Material Steel Stamped
Dynamic Load Rating (Cʳ) 3.35 kN
Static Load Rating (C₀ʳ) 1.42 kN
Limiting Speed (Grease) 28,000 r/min
Limiting Speed (Oil) 36,000 r/min
Weight (approx.) 9.5 g

Interchange Part Numbers

Compatible replacements include:

  • SKF: 635-ZZ
  • NSK: 635 ZZ
  • FAG: 635 ZZ
  • NTN: 635ZZ
  • NMB: R-1560ZZ

Design & Configuration

The 635-ZZ comes standard with dual pressed steel shields, offering a balanced solution between protection and low friction. For environments requiring full sealing against moisture or fine contaminants, the double rubber-sealed version (635-2RS) is also available.

"Choose the 635-ZZ for compact, high-speed mechanisms where dust resistance and smooth operation are equally important."

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Related Products

Precision 634-ZZ Replacement Bearing compatible with SKF 634-2Z, NSK 634 ZZ, and FAG 634-ZZ
634 ZZ Deep Groove Ball Bearing for General Compact Machinery | 4x16x5 mm

The 634-ZZ is a Premium Miniature Deep Groove Ball Bearing engineered for applications that demand compactness and reliable performance. Featuring double metal shields (ZZ) on both sides, this precision metric bearing provides effective protection against dust and contaminants while ensuring low-friction operation. With a 4mm bore and a robust outer diameter, it is an ideal choice for small yet demanding applications such as precision instruments, high-performance micro-motors, and compact machinery where space is limited but durability is required.

Details
Double Shielded 635ZZ Ball Bearing (5x19x6 mm) for Robotics, Cooling Fans, and Encoder Systems
635-ZZ Deep Groove Ball Bearing For Motors & Precision Devices | 5x19x6 mm

The 635-ZZ is a High-Performance Miniature Deep Groove Ball Bearing designed for applications demanding reliable operation with superior contamination resistance. Equipped with double metal shields (ZZ) on both sides, this metric bearing delivers effective protection against airborne particles and debris, preserving internal lubrication and ensuring smooth, long-lasting performance. With a compact 5mm bore, it serves as an essential component in small electromechanical devices, precision instruments, and compact motor assemblies where space-saving design and dependable shielding are critical.

Details

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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