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Drive shaft

1. Threads, splines must not be damaged. 2. The drive shaft must not be cracked, bent or deformed. 3. The needle bearing of the joints may be omitted at some shaft joints. The bearing seat axle must not be damaged. 4. The drive shaft must not be strongly corroded or burnt out (structure stability disturbance). 5. The bowl and internal parts of the joint may not be cracked or deformed. 6. The ext. joint may be delivered without the ball (the race may not be damaged).