ال 604ZZ miniature deep groove ball bearing is a compact, high-performance bearing designed for applications requiring smooth rotation, low friction, and reliable durability. With dimensions of 4 mm × 12 mm × 4 المليمتر, it is ideal for precision equipment, miniature motors, robotics, model engineering, أتمتة المكاتب, and various industrial applications.

Manufactured from premium GCr15 (AISI 52100) chrome steel, the 604ZZ bearing is heat-treated for high hardness and wear resistance. دروع معدنية مزدوجة (ز.) protect the internal raceways from dust and contaminants while maintaining excellent high-speed performance.

NKMB supplies standard and customized 604ZZ bearings to OEM manufacturers and industrial distributors worldwide.

Product Advantages

• Precision deep groove ball bearing design
• Compact size for limited installation space
• Premium chrome steel construction
• Double metal shield (ز.) protection
• Factory-filled with high-quality grease
• Smooth and quiet running
• Low friction and reduced vibration
• High rotational speed capability
• Long operating life
• Stable performance under continuous operation

Technical Specifications

Typical Applications

The 604ZZ miniature bearing is commonly used in:

• Miniature electric motors
• Cooling fans
• Precision instruments
• الأجهزة الطبية
• Robotics and automation
• 3D printers
• Small gearboxes
• Office equipment
• RC models
• Smart home devices
• Optical instruments
• Measuring equipment
• Industrial control systems
• DIY mechanical projects

خيارات المواد

To meet different operating environments, NKMB offers multiple material choices:

• كروم الصلب (GCr15 / AISI 52100) – High hardness, excellent load capacity, suitable for most industrial applications.
• 440C Stainless Steel – Superior corrosion resistance for humid, food-processing, and medical environments.
• Ceramic Hybrid Bearings – Optional for high-speed, low-friction, and electrically insulated applications.

Quality Assurance

Every 604ZZ bearing is manufactured using precision grinding and strict quality inspection procedures. Each production batch is tested for:

• Dimensional accuracy
• Radial clearance
• Rotational noise
• Vibration level
• Surface finish
• Grease consistency
• High-speed running performance

This ensures consistent quality and reliable performance in demanding applications.

أوم & Custom Manufacturing

NKMB provides comprehensive OEM and ODM services, منها:

• Custom laser logo marking
• Private label packaging
• Customized grease selection
• Special radial clearance
• Precision grade customization
• Stainless steel versions
• Non-standard dimensions upon request

Frequently Asked Questions

What does ZZ mean in 604ZZ?

“ز.” indicates that the bearing is equipped with double metal shields on both sides. These shields help prevent dust from entering the bearing while allowing high-speed operation with minimal friction.

Is the 604ZZ bearing pre-lubricated?

نعم. All standard 604ZZ bearings are supplied pre-filled with premium grease and are ready for installation.

Can the 604ZZ operate at high speed?

نعم. The lightweight construction, precision raceways, and low-friction grease make the 604ZZ suitable for high-speed applications such as electric motors and cooling fans.

Do you provide customized bearings?

نعم. NKMB offers OEM manufacturing, including custom branding, packaging, material selection, lubrication options, and precision grades to meet customer requirements.

Why Choose NKMB?

• Professional miniature bearing manufacturer in China
• High-precision production equipment
• Stable product quality
• Competitive factory pricing
• Fast delivery
• Flexible OEM/ODM services
• Export experience serving customers worldwide
• Strict quality control from raw material to finished product