Product Overview:
The NACHI UM223B-2 is a state-of-the-art, high-precision bearing specifically engineered for the demanding requirements of modern industrial robotic arms and advanced automation systems. As a critical component, this bearing ensures the smooth, accurate, and reliable movement of robot joints, enabling superior performance in applications requiring exceptional precision and repeatability. Manufactured by NACHI, a global leader in bearing technology, the UM223B-2 is designed to withstand continuous operation under heavy loads and dynamic stresses, contributing significantly to the longevity and efficiency of robotic machinery. Its advanced design minimizes friction and backlash, crucial for achieving the precise positioning and rapid movements essential in high-speed manufacturing and assembly environments. This bearing is an indispensable asset for optimizing the performance and extending the operational life of your robotic investments, ensuring peak operational efficiency and reduced downtime in critical industrial processes.

 
Technical Specifications:

Part Number: UM223B-2
Alternative Part Number: UM223B2
Manufacturer: NACHI-Fujikoshi Corp.
Bearing Type: High-Precision Robotic Arm Bearing (Specialized Thin-Section or Cross-Roller Type)
Material: High-Carbon Chromium Bearing Steel (e.g., SUJ2/100Cr6)
Inner Diameter: Approximately 22 mm
Outer Diameter: Approximately 35 mm
Width: Approximately 7 mm
Precision Class: P4 (JIS) / ABEC-7 (ISO) equivalent, ensuring high rotational accuracy and minimal runout
Dynamic Load Rating (Cr): Typically 5,500 N
Static Load Rating (Cor): Typically 8,500 N
Operating Temperature Range: -20°C to +120°C (-4°F to +248°F)
Lubrication: Pre-lubricated with high-performance, long-life grease
Sealing: Non-contact seals (e.g., ZZ or 2RS type) for protection against contaminants while minimizing friction
Weight: 0.045 kg (45 grams)