OEM-specification Hitachi Needle Bearing. Part number 4452483. Compatible with Hitachi Excavator 350 Ex1200 6 Zaxis Zaxis350H Zaxis350K Zaxis370 Zaxis450 Zx330 Zx350H Zx450.
Always verify with serial number before ordering.
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Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.
