The Panama Canal Authority (ACP) is responsible for operating and maintaining one of the most critical global shipping routes, requiring extremely high standards in equipment reliability and engineering quality.
Project Overview
This project involves the production of grooved sheaves for the Panama Canal Authority (ACP), one of the most demanding engineering environments in the world.
The components are used in heavy-duty lifting and mechanical systems, requiring strict control over material properties, machining accuracy, surface treatment, and coating specifications.
This project demonstrates our capabilities in metal casting processes and precision machining for heavy-duty industrial components.
Project Details
- Project Name: Grooved Sheave for ACP
- Client: Panama Canal Authority (ACP)
- Material: SCMN2A Alloy Steel Casting
- Casting Weight: Approx. 40 kg per piece
- Quantity: 60 pcs
- Heat Treatment: Normalizing + Tempering
- Surface Hardness: Induction hardened (Shore hardness > 50 HS)
- Application: Heavy-duty mechanical system
Manufacturing Process
These grooved sheaves are typical heavy-duty components used in lifting, conveying, and marine systems. Our capabilities cover alloy steel casting, CNC machining, heat treatment, and surface coating for various industrial applications.
The production process followed strict quality control at every stage:
- Alloy Steel Casting (SCMN2A, ZG310-570 to replace)
- Rough Machining
- Heat Treatment (Quenching & Tempering)
- Induction Hardening for Groove Area
- Precision Machining of Key Dimensions
- Surface Inspection & Dimensional Verification
- Epoxy Coating (Marine Grade)
For similar projects, please check our precision investment casting services and custom machining solutions.
Want to learn more about how grooved sheaves are manufactured?
Read our detailed guide on grooved sheave manufacturing process.
Key Technical Requirements
According to the drawing and specifications:
- Oil grooves must be precisely machined and aligned after installation
- Center tolerance must be ≤ 0.05 mm
- Critical surfaces require strict dimensional control
- Surface hardness ensured after induction treatment
Epoxy Coating Requirement (Critical Point)
Based on the final clarification from the client:
👉 Epoxy coating must ONLY be applied to as-cast surfaces
👉 Machined surfaces must NOT be coated
This requirement is crucial to ensure:
- Proper assembly tolerance
- Functional contact surfaces
- Long-term mechanical performance
The coating used is equivalent to:
- HI-PON 20 ACE (Nippon Paint)
- Replaced with: HI-EPOXY 1494 Marine
Dimensional Inspection & Quality Control
We conducted full inspection for:
- Inner diameter
- Outer diameter
- Groove dimensions
- Bolt hole positions
- Surface roughness
Each part was verified using:
- Vernier calipers
- Depth gauges
- Surface testers
👉 All measurements were recorded and documented in inspection reports.
Size Inspection
Surface Inspection
Strict dimensional control is a key part of our steel casting quality assurance process, ensuring all components meet engineering requirements.
Material & Mechanical Properties
Chemical Composition (Typical)
- C: 0.47
- Si: 0.25
- Mn: 0.693
Mechanical Properties
- Tensile Strength: ≥ 570 MPa (Actual: 582 MPa)
- Yield Strength: ≥ 310 MPa (Actual: 325 MPa)
- Hardness: 210 HB
Heat Treatment
- Process: Quenching and Tempering
- Result: Stable microstructure and improved strength
Final Result
All products passed:
- Dimensional inspection
- Material verification
- Mechanical testing
- Surface quality check
✅ Approved for delivery to ACP
✅ Fully compliant with project specifications
Why This Project Matters
This project demonstrates our capability in:
- Handling government-level engineering projects
- Controlling complex machining + coating combination
- Delivering high precision heavy casting parts
- Meeting strict international standards
We have delivered a wide range of custom industrial casting projects for global clients across marine, construction, and machinery industries.
Request a Quote
Looking for a reliable supplier for heavy casting and machining parts?
We support custom production of grooved sheaves, pulleys, and other industrial components with full quality control from raw casting to final inspection.
You can also explore our detailed article explaining the full grooved sheave manufacturing process, including casting, machining, and inspection steps.
Contact us today to get a quotation and technical support for your project.
