77553600 Kolbenschmidt MAIN BRG SET VW PDE 4 CYL

A main bearing set for Volkswagen's PDE 4-cylinder engines, the MAIN BRG SET VW PDE 4 CYL plays a crucial role in the engine's operation by supporting and lubricating the crankshaft within the crankcase. This Kolbenschmidt product, identified by MPN 77553600, is manufactured to precise dimensions (38.0 x 82.0 x 140.0 mm) and originates from Germany. Dimensions are provided by the supplier and may include packaging dimensions. Crankshaft bearings are precision components facilitating smooth rotary motion between the crankshaft and engine block. Located within the engine’s main and connecting rod bearing bores, these bearings support significant loads and reduce friction generated by reciprocating piston motion. Typically manufactured from tri-metal or polymer-coated steel, they feature a split design for ease of installation and precise clearance control. Oil grooves and channels within the bearing surface maintain a hydrodynamic oil wedge, preventing metal-to-metal contact. Dimensional accuracy and material hardness are critical for maintaining engine performance and longevity, with variations existing for different engine families and load requirements.