Boberry

Forged Crank Shaft

  • Directional Grain Flow: Forging aligns fibers for superior load endurance.
  • High Fatigue Strength: Suitable for high-cycle engines and heavy-duty use.
  • Precision Journal Machining: Ensures smooth rotation and minimal wear.
  • Complex Web Geometry: Engineered for accurate stroke and crank throw.
  • Delivery Time: 15–30 days (urgent), 30–45 days (standard).

Technical Specifications

Parameter Specification
Material Options Alloy Steel, Carbon Steel, Stainless Steel
Heat Treatment Quenching & Tempering, Normalizing, Nitriding
Forging Method Open Die / Closed Die
Max Length Custom
Max Weight Custom
Surface Roughness Ra 0.4–3.2 μm
Non-Destructive Testing UT / MT / PT
Mechanical Testing Tensile, Hardness, Impact
Report Provided Hardness, UT/MT, Chemical Composition, Dimensional Check

Customization & OEM Service

  • Custom multi-throw crankshaft design based on customer drawings.
  • OEM production for engines, compressors, pumps, and heavy machinery.
  • Tailored material grades (alloy, carbon, stainless, and special steels).
  • Custom stroke length, crank radius, journal diameters, and fillet profiles.
  • Prototype & sample support using rapid forging and machining.
  • CAD/CAE engineering for stress analysis and structural optimization.
  • Surface hardening (nitriding/induction) to meet specific wear requirements.
  • Fully customized machining: turning, grinding, drilling, and chamfering.

Industries Served

  • Automotive & Commercial Vehicles: Engine crankshafts for gasoline/diesel engines.
  • Agricultural Machinery: Tractors, harvesters, and power machinery.
  • Construction & Mining Equipment: Excavators, loaders, and heavy-duty engines.
  • Marine Engineering: Boat engines, propulsion systems, and auxiliary power units.
  • Industrial Pumps & Compressors: Reciprocating compressor and power unit crankshafts.
  • Power Generation Equipment: Generator engines and industrial power plants.
  • Railway & Heavy Transport: Locomotive and heavy rolling stock engines.

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