Cummins Part QSK60 Diesel Engine Crankshaft Pulley 4017213

1. Three-layer composite structure design

Layer Material composition Functional properties

Core layer Vacuum-forged 42CrMo4 steel Tensile strength ≥1100MPa

Cushion layer Fluoroelastomer-aramid braided composite material Damping coefficient increased by 300%

Surface layer Micro-arc oxidation aluminium alloy Corrosion resistance increased by 5 times

Aerospace grade dynamic balancing process

Adopt five-axis linkage machining centre for vector counterweight drilling, residual unbalance ≤ 0.5g-mm/kg (ISO 1940 G2.5 grade)

Correct the quality deviation of 0.01g level by laser holographic detection.

Third, structural innovation: crack the physical predicament of heavy-duty transmission

With a 72-tooth involute tooth shape, the contact stress is reduced by 42 per cent.

Tooth root R angle strengthening treatment, the bending strength is increased to 1800MPa.

6 sets of radioactive stress grooves convert centrifugal force into radial compression stress.

Implanted tungsten carbide coating in the keyway area, reducing the micromotion wear rate by 90%.

Test Scenarios 4017213 Performance Conventional Product Failure Mode

Chilean copper mine Continuous operation 18,000 hours without abnormal vibration Average 6,000 hours fracture