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.
Manufacturing Capabilities
Forging Facilities
- 6300T / 3150T / 2000T free hydraulic presses.
- 5T, 3T, 2T, 1T, 750kg, 560kg electro-hydraulic hammers.
Heating Treatment Facilities
- RTX-9 series trolley furnaces in multiple sizes (5.5–8 m chamber length).
- RJ-9-850KW vertical furnace with 15 m depth.
- RTX-12-350KW high-temperature trolley furnace.
Machining Facilities
- CNC machines (max 32-ton load).
- Heavy-duty lathes and vertical mills (up to 70 tons).
- Gantry milling machines, deep-hole boring machines, grinding and turning centers.
Testing & Quality Control
- Spectrum analysis for chemical composition.
- Ultrasonic, non-destructive, and metallographic testing.
- Mechanical property test machines for yield, tensile, hardness.
Production Process
- Raw Material Selection: Use first-grade ingot steel, inspect chemical composition.
- Forging: Heat to precise temperature, perform open die or die forging.
- Heat Treatment: Quenching, tempering, or normalizing to meet mechanical targets.
- Machining: CNC turning, boring, milling, grinding, and drilling to precision ±0.01 mm.
- Inspection: Each shaft tested via 100% ultrasonic, hardness, and tensile checks.
- Packaging & Delivery: Anti-corrosion coating, safe transport packaging, global logistics support.
Additional Value-added Services
- Quench-and-temper heat treating
- Rough and finish turning
- Ultrasonic and mechanical testing
- Dimensional inspection reports
- Customized design and programming support
Quality Assurance
- Each forging carries a test bar for mechanical testing.
- 100% ultrasonic and visual inspection before shipment.
- Hardness, tensile, and metallographic verification.
- Compliance with ASTM, DIN, GB, and EN standards.
Why Choose Boberry
Integrated Production
Complete forging-to-machining production line ensures precision and fast delivery.
Advanced Equipment
Heavy-duty forging presses and CNC systems handle large, complex mechanical component geometries.
Certified Assurance
Certified production with ISO9001, PED, SGS compliance and global OEM support.
Logistics & Delivery
Lead Time: 15–30 days (urgent) / 30–45 days (normal).
Monthly Capacity: 500–1000 tons.
Packing: Wooden crates, steel frames, or per client request.
Shipment: By Sea (recommended, saves cost for forging parts) / By Air (fast but expensive).
Payment Terms: 30% deposit with balance via B/L copy; or 100% L/C at sight.
Delivery Terms: FOB, CIF, CNF.
Monthly Capacity: 500–1000 tons.
Packing: Wooden crates, steel frames, or per client request.
Shipment: By Sea (recommended, saves cost for forging parts) / By Air (fast but expensive).
Payment Terms: 30% deposit with balance via B/L copy; or 100% L/C at sight.
Delivery Terms: FOB, CIF, CNF.