Cuscinetti interamente in ceramica Si3N4, 4x12x4 , miniaturizzati, confezione da 20 pezzi; cuscinetti a sfere in nitruro di silicio per prestazioni di alta precisione e basso attrito in attrezzature industriali, mediche e per hobby; cuscinetti compatti, resistenti e ideali come ricambi

High-performance Si3N4 ceramic bearings, 4x12x4mm pack of 20
✔️ Si3N4 ceramic balls with PTFE cage, 4mm ID, 12mm OD, 4mm width, durable for industrial use, comes in a 20-pack set

This is a set of miniature Si3N4 ceramic ball bearings, often used in high-speed machinery, robotics, and precision devices where heat resistance and low friction are key.

✅ Si3N4 ceramic material for enhanced durability and heat resistance
✅ Precise dimensions of 4mm inner diameter, 12mm outer diameter, and 4mm width
✅ PTFE cage ensures smooth operation and reduced wear
✅ Supplied as a convenient 20-pack for bulk applications

💡 What makes ceramic bearings a smart choice for high-performance machinery?
Ceramic bearings like these provide reliable performance in demanding settings.
- Offer superior heat resistance compared to metal options, ideal for fast-spinning parts
- Deliver lower friction for better energy efficiency in motors and tools
- Resist corrosion better in harsh environments, extending equipment life
- Help cut down on maintenance with their tough build for everyday industrial tasks