• Micro Motors & Spindles
• Laboratory & Diagnostic Devices
• Dental & Surgical Hand Tools
• Centrifugal Pumps

• Small DC & Brushless Motors
• Servo & Stepper Motors
• Encoder & Feedback Systems
• Automotive Auxiliary Motors

• Robotic Arm Joints
• Linear Actuators
• Precision Guide Rolls
• Optical & Sensing Equipment

• Computer Cooling Fans
• Printers & Scanners
• Small Appliances
• Advanced Hobbyist Models (RC/Drones)

01. Reliable Non-Contact Dust Sealing

Steel shields on both sides create an effective barrier against dust and particulate ingress without contacting internal components. This design preserves lubricant, extends maintenance cycles, and ensures low rotational torque for efficient performance.

02. Robust Performance in a Miniature Size

Built to light series dimensions (5×19×6 mm), this bearing offers substantial radial load capacity and handles moderate axial loads within a minimal footprint. Its design provides a balance of strength and compactness for tightly engineered assemblies.

03. Precision Engineered for High Speeds

Available with precision grades up to ABEC 5 (P5), the 635-ZZ incorporates optimized internal geometry to reduce friction and vibration. This ensures smooth, consistent, and reliable operation at elevated rotational speeds in demanding applications.

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, providing a balanced solution between contamination protection and low-friction operation. For environments requiring complete sealing against moisture or fine contaminants, the double rubber-sealed version (635-2RS) is also available.

"Ideal for compact, high-speed mechanisms such as small precision instruments and micro motors. The 635-ZZ combines effective dust resistance with smooth, reliable performance, making it a key component where size and speed are critical."