How to Select the Proper Hardness Tester for Crankshaft Journal Measurement? Sinowon's Non-Destructive Solution Explained

As a core component of internal combustion engines, crankshaft journal hardness measurement directly impacts engine performance and longevity. Traditional benchtop hardness testers face multiple challenges when measuring large crankshafts. Sinowon, China's leading hardness measurement equipment manufacturer, addresses industry pain points with innovative ultrasonic hardness testing technology, delivering efficient non-destructive solutions for crankshaft manufacturers.

4 Critical Challenges in Crankshaft Hardness Measurement

1. Oversized Dimensions Complicate Fixturing

Typical crankshafts exceed 50cm (e.g., 51cm), requiring customized fixtures for conventional testers - increasing setup costs by 30-45% and complicating operations.

2. Heavy Weight Elevates Safety Risks

Single crankshafts weighing 14kg+ pose ergonomic hazards, with frequent handling causing operator fatigue and potential workplace injuries.

3. Multiple Test Points Reduce Efficiency

Traditional methods demand 40-60 minutes per crankshaft due to repetitive repositioning for multi-point journal inspections.

4. Visible Indentations Impact Surface Integrity

Rockwell testers leave 0.4768mm indentations (equivalent to 5× ultrasonic marks), risking surface finish damage and rework costs in batch production.

Sinowon Ultrasonic Hardness Tester: Breakthrough in Non-Destructive Testing

Our self-developed UCI technology enables rapid crankshaft hardness measurement with micron-level precision, widely adopted by automotive and marine manufacturers.

Key Advantage 1: Zero-Surface Damage

UCI Method (Ultrasonic Contact Impedance):

Indentation diameter: 0.0570mm (1/10 hair width)

Direct assembly post-testing

Scrap rate reduction: 92%

Key Advantage 2: 17x Faster Measurements

Single-point test: 4 seconds vs. 68s (Rockwell)

One-hand operation without fixturing

Daily throughput: 500% increase

Key Advantage 3: Portable Safety Design

Total weight: <1.5kg with ergonomic probe

In-line/field testing capability

Eliminates heavy lifting risks

Technical Comparison: Sinowon vs Traditional Testers

3-Step Selection Guide for Crankshaft Hardness Testers

3.1 Confirm Standards Compliance

Materials: Nodular cast iron, alloy steel (HRC 50-60)

Certifications: ISO 18265, ASTM A1038

3.2 Evaluate Application Scenarios

Production Line: Choose Sinowon Wireless UCI with Bluetooth® data transfer

Verify Compatibility

Free sample testing available

Why Sinowon?

National Standard Contributor: Drafting committee member for GB/T ultrasonic hardness tester standards

Custom Solutions: Adaptive probes + software integration

Full Support: 24/7 technical service + Free annual calibration

Request Free Crankshaft Testing Consultation:

 mz@sinowon.com
 www.sinowon.com