The Heart of Every Hydraulic System
Our precision hydraulic parts machining service is designed for the most critical components in a hydraulic system, including valve spools, valve bodies, pump cylinders, and manifolds. These parts control oil flow, pressure, and direction, and the performance of your entire machine depends on them. We have been producing high-precision hydraulic components since 2009, and our IATF16949 certification ensures the highest standards of reliability.
Materials and Heat Treatment for Long Wear
We select materials specifically for hydraulic applications:
Valve spools: Nitriding steel such as 38CrMoAl or bearing steel GCr15 with hard chrome plating.
Pump cylinders: High-strength copper alloys or carburized steel.
Manifolds: Pre-stretched aluminum plates or forged steel.
Heat treatment is carefully controlled to achieve surface hardness up to HRC58–65, providing long wear life and dimensional stability.
| Specification | Details |
| Materials | 38CrMoAl, GCr15, Copper Alloys, Carburized Steel, Forged Steel |
| Surface Hardness | HRC58 to HRC65 after nitriding or carburizing |
| Diameter Tolerance | ±0.003 mm on critical spools and bores |
| Roundness & Cylindricity | Within 0.003 mm |
| Surface Finish | Ra 0.4 μm to Ra 0.05 μm (Mirror Finish) |
| Cleanliness Standard | ISO 4406 |
Micro-Level Tolerances and Perfect Cleaning
We precision hydraulic parts machining use precision grinding, honing, and lapping to achieve final dimensions. Critical spools and bores are held to ±0.003 mm diameter, with roundness within 0.003 mm, and surfaces smoothed to Ra 0.05 μm. This ensures a perfect oil film and prevents leaks.
For manifolds, we perform deep-hole drilling for oil passages and use methods such as electrochemical deburring to remove sharp edges. Each part undergoes ultrasonic cleaning, and cleanliness is verified to ISO 4406 standards.
Our service is comprehensive: we provide clear pricing, respond to inquiries within 24 hours, and deliver components that keep your hydraulic systems running reliably and efficiently.
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