What is your minimum order quantity for custom parts?

We support single-piece prototypes and low-volume runs through CNC machining, 3D printing and urethane casting, and scale to mass production through die casting, injection molding and stamping. Share your target quantity and our engineers will recommend the most cost-effective process.

What tolerances can Sunmy Hardware hold?

Standard CNC tolerances are ±0.01 mm, and critical features can be held down to ±0.005 mm. Dimensions are verified with CMM inspection and documented in FAI reports before shipment.

How do you protect my drawings and intellectual property?

We sign a Non-Disclosure Agreement with you by email before collecting any 3D or CAD files. You work directly with the factory, so your data is never handed off to brokers.

Which quality documents are available with shipments?

Material certificates, RoHS compliance documents, First Article Inspection (FAI) reports and CMM dimensional reports can be supplied per project.

Which manufacturing processes are done in-house?

CNC machining and stamping are performed in our own facilities. Casting and surface finishing are completed by audited partners. All final quality control, CMM inspection and FAI are executed in-house by Sunmy engineers before global shipping.

Which CAD file formats do you accept?

We accept STEP, IGES, STL, DWG/DXF and PDF 2D drawings. Physical samples can also be reverse-engineered.

Precision CNC Turned Hydraulic Solenoid Valve Core Excavator Spare Parts OEM Manufacturer Supplier

Product Overview

Essential Control for Heavy Machinery.

The Hydraulic Solenoid Valve Core is the critical mechanical heart of the hydraulic control system. Designed specifically for heavy-duty applications such as Excavators, this component bridges the gap between electrical signals and hydraulic force. When the solenoid is energized, this core actuates with high precision to direct fluid flow, ensuring smooth and responsive machinery operation.

Produced by Shenzhen Sunmy Hardware Co., Ltd., this part represents the intersection of electrical actuation and mechanical precision, engineered to withstand the rigorous pressure and temperature demands of the construction industry.

Process & Manufacturing Insights

Expertise in Precision Turned Parts. At Sunmy, we utilize state-of-the-art manufacturing technologies to produce valve cores that meet strict OEM standards.

Precision CNC Turning

The main body is crafted using advanced CNC lathes. This allows us to achieve tight geometric tolerances (concentricity and varying diameters) essential for a jam-free sliding motion within the valve body.

Material Integration

The component features a seamless integration of a durable metal shaft (Steel/Stainless Steel) with a high-grade engineering plastic knob (identified as PA66 GF30 - Polyamide with 30% Glass Fiber reinforcement) for superior thermal and mechanical resistance.

Surface Finishing

The metal stem undergoes precision grinding and polishing to reduce friction and wear, ensuring a long lifecycle even under high-frequency cycling.

Assembly & Sealing

Pre-installed with high-quality O-rings (Green/Black FKM or NBR) to ensure zero leakage under high hydraulic pressure.

Key Specifications

Based on visual analysis and technical data:

Feature	Specification
Manufacturer	Shenzhen Sunmy Hardware Co.,Ltd.
Product Type	Hydraulic Solenoid Valve Core / Stem
Manufacturing Process	Precision CNC Turning / Lathe Machining
Primary Application	Excavators (Construction Machinery)
Body Material	High-Grade Carbon Steel or Stainless Steel (Polished)
Cap/Knob Material	PA66 GF30 (Glass Fiber Reinforced Nylon)
Sealing	High-Temp Resistant O-Rings (Installed)
Origin	Guangdong, China
MOQ	1 Piece (Flexible for sampling)

Features & Advantages

Why choose Sunmy for your hydraulic components?

OEM-Level Precision: Our "Turned Parts" capability ensures that every groove, thread, and diameter matches the original specifications perfectly for a drop-in replacement fit.
Robust Durability: The use of PA66 GF30 plastic ensures the manual override/cap mechanism resists cracking under heat and vibration, while the metal core resists corrosion and wear.
Rigid Quality Control:
（1）Video Outgoing Inspection: We provide video verification of your order before shipment.
（2）Machinery Test Reports: Full dimensional and material reports are available upon request.
（3）Customization Power: As a manufacturer, Sunmy is not just a supplier but a developer. We can reverse-engineer worn parts or manufacture custom valve cores based on your drawings or samples.

Technical FAQ

Q1: What is the typical lead time for this item?

A1: For stock items, we can ship immediately. For custom manufacturing orders (mass production), the lead time is typically 15-25 days depending on quantity and complexity.

Q2: Can this valve core be used for brands other than the specific excavator shown?

A2: This specific design is tailored for excavator hydraulic systems. However, Shenzhen Sunmy Hardware specializes in custom hardware. If you provide a drawing or a sample of a different valve core, we can manufacture it to your exact needs using our CNC turning centers.

Q3: How do you ensure the part fits my machine?

A3: We recommend checking the part number (visible on the plastic cap: 472881) or providing us with the dimensions of the thread and stem length. Our engineering team can verify compatibility before you order.

Q4: Do you offer samples?

A4: Yes, our MOQ is 1 piece, allowing you to test the quality and fit before committing to a bulk order.

Q5: What quality control reports and inspections do you provide?

A5: We provide Video Outgoing Inspection before shipment, along with full dimensional and machinery test reports upon request.

Q6: What materials are used to manufacture this solenoid valve core?

A6: The core body is crafted from high-grade carbon steel or polished stainless steel, integrated with a PA66 GF30 (30% glass fiber reinforced nylon) knob and pre-installed high-temp resistant O-rings.

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High-Quality High-Performance Hydraulic Solenoid Valve Core – Precision CNC Turned Excavator Spare Parts Suppliers, Manufacturers