High Strength Forged Crankshaft for Mechanical Press Machines – 42CrMo/4140

• Customization: Available
• Application: Aerospace Industry, Agricultural Equipment, Automotive Industry, Construction Industry, Marine Industry, Medical Industry, Robotics Industry
• Certification: CE, EPA, GS, ISO9001, RoHS
• Model NO.: 0133547
• Corrosion Resistance: High Corrosion Resistance
• Journal Diameter Dimensional Accuracy: IT01-IT5
• Journal Relative Position Accuracy: 0.001-0.005mm
• Journal Surface Roughness: 0.63-0.16μm
• Shaft Type: Crankshaft
• Strength: High Strength
• Surface Finish: Anodized
• Tolerance: Precision Tolerance
• Applied Area: Home Application, Machinery, Auto, Car Wheel
• Process: Forging/Casting – Normalizing & Tempering ..
• Machining: Rough Machining or Finish Machining
• Transport Package: Sea Worthy Wooden Case, Iron Pallet or Customized
• Specification: all sizes
• Trademark: BPS
• Origin: China
• Production Capacity: 10000 PCS/Month
• Package Size: 500.00cm * 500.00cm * 100.00cm
• Package Gross Weight: 50.000kg

Product Description

Product Description

Crank Shaft for Punch Press: Technical Introduction

The crank shaft is a critical component in punch press machinery, converting rotary motion into linear motion to drive the ram for precision stamping, punching, or forming operations. Below is a professional overview compliant with manufacturing platform standards.

Key Features & Specifications

Material: High-grade alloy steel (e.g., SCr440, SCM435) or forged steel for durability.
Heat Treatment: Precision hardening (HRC 50-55) and grinding for wear resistance.
Balancing: Dynamically balanced to minimize vibration and ensure smooth operation.
Customization: Available in varying lengths, strokes, and journal diameters to match press tonnage (e.g., 20T–500T).

Applications & Quality Standards

Used in mechanical punch presses for:

Metal stamping
Blanking
Piercing
Deep drawing

Dimensional Accuracy: Tolerance within ±0.005mm.
Testing: Ultrasonic inspection for internal defects; surface roughness ≤Ra 0.4μm.
Compliance: ISO 9001, CE, or industry-specific certifications.

Punch Press Crank Shaft – Technical Specifications
Material	Alloy steel (SCr440, SCM435), Forged steel
Heat Treatment	Hardened (HRC 50-55), Precision grinding
Surface Finish	≤Ra 0.4μm, Polished journals
Tolerance	±0.005mm (Dimensional), Dynamically balanced
Load Capacity	Compatible with 20T–500T punch presses
Key Applications	Metal stamping, Blanking, Piercing, Deep drawing
Standards	ISO 9001, CE, Custom OEM/ODM accepted
Customization	Stroke length, Journal diameter, Lubrication groove design
Testing	Ultrasonic flaw detection, Run-out testing
MOQ	1 piece (Sample orders available)
Packaging	Anti-rust oil + wooden crate (Export-standard)

Packing

Punch Press Crankshaft Packaging Introduction

1. Protective Surface Treatment
Before packaging, each crankshaft is thoroughly cleaned and coated with high-performance anti-rust oil (VCI) or wax-based preservative to prevent oxidation and corrosion, even in humid environments.

2. Shock-Absorbent Wrapping
The crankshaft is securely wrapped in bubble wrap, PE foam, or VCI paper to cushion against vibrations, impacts, and scratches during transit. Critical areas such as bearing journals and eccentric sections receive extra padding.

3. Secure Fixation & Stabilization
To prevent movement inside the package, the crankshaft is mounted on custom wooden brackets and secured with steel strapping. This ensures stability and minimizes the risk of damage from shifting during transport.
 
4. Heavy-Duty Outer Packaging
The final layer consists of a 5-ply export-grade wooden crate (for large crankshafts) or a reinforced corrugated carton (for smaller models). The crate is designed to withstand rough handling and long-distance shipping, including sea freight

Why Choose Us                                     

Q: What material are your punch press crankshafts made of?
A: They're crafted from high-grade alloy steel (SCr440/SCM435) or forged steel for maximum durability.
Q: Do you provide quality certifications?
A: Yes, all crankshafts come with ISO 9001 and CE certifications, along with mill test reports.
Q: Can you customize crankshafts for specific press models?
A: Absolutely! We tailor dimensions, stroke length, and load capacity to match your press requirements.
Q: How do you ensure damage-free shipping?
A: We use anti-rust coatings, wooden crates, and shock-absorbent packaging for secure delivery.
Q: What's your lead time for orders?
A: Samples take 15-30 days, while bulk orders have negotiable timelines based on specifications.