CAT 3304 crankshaft(4N7692) 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	3304	Gross weight(kg)	74
OEM/PART NO	4N7692	Length(mm)	778
Crankshaft Material	Forged steel 40Cr	Main journal(mm)	88.9
Engine type	diesel engine	Crankpin journal(mm)	76.2
Application	CATD4D,CAT140	Stroke(mm)	152.4
Anti-rusty Coating	Clear oil/Butter (optional)	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)

4N7692｜3304 Crankshafts are processed using medium-frequency quenching and tempering, ensuring uniform quenching layer thickness and effectively avoiding deformation and tolerance deviations commonly found in cast iron crankshafts.

Technical specifications: The hardened layer thickness ranges from 3 to 5 millimeters, with a hardness of HRC 52-58. The surface features distinct hardening marks, a characteristic highly recognized by overseas buyers.

Quality Assurance

(1)ISO 9001:2015 Covers Forged Steel Crankshaft Production

3304 crankshaft ISO 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).

Product Applicable

Compatible models for 4N7692｜3304 crankshaft：

WHEELED LOADER：CAT920,CAT930,CAT950

TRACK-TYPE TRACTOR：CATD4D

HYDRAULIC CONTROL：CAT140

MARINE ENGINE：3304,D330C

product-1460-234

Product packaging

For 4N7692｜3304 crankshaft, we offer our customers a choice of different types of packaging boxes: plywood and raw wood.

product-1-1

FAQ (Answering Common Questions)

Q: Are you an export company? Do you have your own factory?

A: We are a source factory specializing in the production of forged steel crankshafts for 18 years.

Q: Where is your factory located?

A: Our factory address is:

Q: What is your minimum order quantity?

A: Our minimum order quantity is 5 pieces.

Q: Can you customize products? How long does it take?

A: We have our own R&D center and can provide customization services. Standard customization takes three months.

Q: Do your products come with a warranty?

A: All our products come with a one-year warranty.

Hot Tags: Crankshaft For Cat 3304|4N7692 For CATD4D CAT140, China Crankshaft For Cat 3304|4N7692 For CATD4D CAT140 manufacturers, suppliers, factory, cat 730 crankshaft, CAT320 crankshaft, 3406E crankshaft, 271 5658, c18 crankshaft, 4N7692