CAT 3306 crankshaft(4N7693) is made from high-quality raw materials 40Cr. Compared to cast iron crankshafts, they offer 27.9% higher tensile strength and 78.6% higher yield strength. The unique induction hardening process creates a 3-5 mm hardened layer (HRC 52-58), which improves wear resistance by 15% compared to nitrided cast iron. Our crankshafts have earned the trust of distributors worldwide.
Product Specifications
|
ENGINE NO |
3306 |
Gross weight(kg) |
97.8 |
|
OEM/PART NO |
4N7693 |
Length(mm) |
1074 |
|
Crankshaft Material |
Forged steel 40Cr |
Main journal(mm) |
88.9 |
|
Engine type |
diesel engine |
Crankpin journal(mm) |
76.2 |
|
Application |
CAT 5A,CAT 6A |
Stroke(mm) |
152.4 |
|
Anti-rusty Coating |
yes |
hardness(hrc) |
HRC52-58 |
Product Advantages
(1)Material Advantage: Forged Steel--40Cr
Data Comparison:Forged Steel vs. Cast Iron
|
Index |
Our Forged Steel Crankshaft |
Market Cast Iron Crankshaft |
Customer Value |
|
Tensile Strength |
≥1000MPa |
≤785MPa |
Suitable for high-load conditions |
|
Wear Life |
3-5 years (heavy load) |
1-2 years |
Reduces maintenance costs |
|
Low-Temp Toughness |
AKV≥25J (-40℃) |
AKV≤12J |
Adapts to extreme climates (Russia, etc.) |
(2)Medium Frequency Quenching (Heat Treatment)
4N7693｜3306 crankshaft is treated with medium-frequency quenching and tempering, leaving quenching marks on the surface, with a quenching layer depth of 3–5 mm.
Quality Assurance
(1) Certifications:
ISO 9001:2015 (covers the entire production process of forged steel crankshafts)
National Innovation Fund Project (R&D of large machinery crankshafts)
Zhejiang Provincial Technology-Based Enterprise Certification
(2)Testing Standards:
From raw material to finished product, more than 30 inspection procedures are carried out, and third-party inspection reports can be provided for key indicators (such as hardened layer depth and dynamic balance).
Production Application
Compatible models for 4N7693｜3306 crankshaft：
TRACK LOADER：CAT 973
TRACK-TYPE TRACTOR：CAT D5
BULLDOZER：CAT 5A,CAT 6A
Product packaging
For 4N7693｜3306 crankshaft, we offer our customers a choice of different types of packaging boxes: plywood and raw wood.
FAQ (Answering Common Questions)
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