MR128zz

Overview of MR128ZZ Bearing

The MR128ZZ is a metric miniature deep groove ball bearing with dimensions 8mm bore (ID) × 12mm outside diameter (OD) × 3.5mm width (W). It is manufactured with chrome steel balls and races, and fitted with double metal shields (ZZ) to protect against dust and debris while allowing smooth rotation at high speeds.

Designed for applications where compact size, precision, and reliability are essential, the MR128ZZ offers low friction, reduced noise, and long service life under proper operating conditions.

Key Features and Specifications

• Bearing Type: Deep Groove Ball Bearing

• Model: MR128ZZ (Shielded on both sides)

• Dimensions: 8mm (ID) × 12mm (OD) × 3.5mm (W)

• Material: Chrome Steel (AISI 52100 equivalent)

• Shields: Double Metal Shields (ZZ) – non-contact, protect from light contamination

• Lubrication: Pre-lubricated with high-quality grease, ready for use

• Performance: High-speed capability, smooth rotation, low noise and vibration

• Durability: Meets precision industry standards for long operating life

Common Applications of MR128ZZ Bearings

Due to its miniature size and reliable performance, the MR128ZZ is widely used in industries requiring compact, high-precision components, including:

• Medical devices (e.g., pulmonary assist devices, cryogenic coolers)

• Aerospace and defense (gyros, fuel controls, surveillance equipment)

• Instrumentation and measuring devices

• Precision clocks, watches, and small motors

• Robotics, drones, and hobby applications (RC cars, electric motors)

Maintenance and Care Tips

Proper maintenance helps extend the service life of the MR128ZZ bearing:

1. Regular Inspection: Check for signs of contamination, wear, or unusual noise.

2. Cleaning: Use a non-corrosive solvent to remove debris if necessary, then dry completely before re-lubricating.

3. Lubrication: Ensure adequate lubrication with compatible grease or oil to minimize friction and wear.

4. Replacement: If pitting, excessive noise, or looseness is detected, replace immediately to prevent system failure.

5. Correct Usage: Always operate within the recommended speed, load, and temperature limits for maximum reliability.

Why Choose MR128ZZ Bearings?

• Compact design ideal for space-limited assemblies

• High precision for stable, smooth performance

• Long service life when properly maintained

• Cost-effective miniature bearing solution for OEM and replacement needs