MR85ZZ Ball Bearing – Miniature Bearing 5x8x2.5mm Shielded High Precision Ball Bearing

MR85ZZ Ball Bearing – Miniature Bearing 5x8x2.5mm Shielded High Precision Ball Bearing

MR85ZZ is a high-precision MR85ZZ miniature bearing with metal shields on both sides, designed to prevent dust and debris from entering the bearing.

• With dimensions of 5mm (ID) x 8mm (OD) x 2.5mm (Width), Ball bearing is compact and lightweight, making it ideal for small-scale applications where space and performance are critical.
• MR85ZZ sealed ball bearing offers low friction, high rotational speed, and long service life, suitable for both radial and limited axial loads.

Specifications

• Type: Deep groove ball bearing
• Inner Diameter (ID): 5 mm
• Outer Diameter (OD): 8 mm
• Width: 2.5 mm
• Shield Type: ZZ (Double metal shielded)
• Material: High carbon chrome steel (GCr15)
• Cage Material: Steel
• Seal Material: Metal (non-contact shields)
• Lubrication: Pre-lubricated with grease
• Precision Grade: ABEC-3 / ABEC-5 (varies by manufacturer)
• Dynamic Load Rating: Approx. 365 N
• Static Load Rating: Approx. 132 N
• Maximum Speed: Up to 60,000 RPM (grease-lubricated)
• Operating Temperature Range: -20°C to +120°C
• Weight: ~0.5 to 0.7 grams

Applications

• MR85ZZ bearings are widely used in precision and space-constrained environments such as:
  • 3D printers (idler wheels, pulleys, extruders)
  • RC cars, drones, and hobby motors
  • Miniature gearboxes and electric motors
  • Robotics and automation equipment
  • Office equipment (scanners, fans)
  • Medical devices and instrumentation

Package Include

• 1 piece of MR85zz Ball Bearing.