Excavator Parts Engine Parts 4D107 Engine Crankshaft 3974539 For Komatsu

PRODUCT DETAILS:

1) Material: casting iron, forged steel, 4340 billet, etc.;

2) Surface treatment: nitrided/ hardening nitrided+polished;

3) The characteristics: wear resistance, good strength, and hardness;

4) Generally Crankshaft Process
Blank--Quenching and tempering--Shot-blast--Rough machining--Shot blasting--Heat treatment--Finish machining
--Fine grinding--Surface treatment--Polishing--Finished product;

Advantage of Crankshaft

• Supply for OEM and after markets

• High quality and reasonable price

• High torsion strength and fatigue strength

• 100% tested for the accuracy and quality

• Material: nodular cast iron

• Testing: ultrasonic testing, mechanical property testing, crack testing.

• We have quality control system to guarantee best product quality.

• We have professional inspectors. All these inspectors are qualified.