Timken - Aircraft Bearing Cup | A4138-20629 NeedsPricing Plug-and-play connection for fast setup

Plug-and-play connection for fast setup with no tools required

won't melt

The "flip-flop" arrow button allows for easy channel switching between the main and stand-by channels

Long-flight comfort: Super-soft padded headband and undercut Comfort-Gel ear seals reduce pressure points

Timken - Aircraft Bearing Cup | A4138-20629 NeedsPricing Plug-and-play connection for fast setupThis is the most basic and most widely used type of tapered roller bearing. It consists of two main separable parts: the cone (inner ring) assembly and the cup (outer ring). It is typically mounted in opposing pairs on a shaft. Specifications Series: A4000 Cup Part Number: A4138 Design Units: Imperial Approvals: FAA PMA Don't be tempted to buy cheapy automotive bearingsBecause Timken uses the same base part number for both the automotive and aviation