Hydraulic CNC Machined Components

We manufacture custom hydraulic CNC machined components from customer drawings and CAD files, including valve bodies, manifold blocks, pistons, spools, bushings, shafts, fittings, adapters, and hydraulic housings. Our CNC turning, milling, 5-axis machining, Swiss CNC, and turn-mill capabilities support tight-tolerance components for hydraulic cylinders, valves, pumps, manifolds, and mobile hydraulic equipment.

From prototypes and low-volume orders to repeat production, we machine metal hydraulic components to specified dimensions, threads, bores, sealing surfaces, and geometric tolerances.

 

We provide precision CNC machining for hydraulic components with complex geometries, critical bores, threaded connections, sealing surfaces, and tight-fitting interfaces. Different machining processes are selected according to part geometry, size, tolerance, and production volume.

CNC Machining Process	Hydraulic Components	Key Capability
CNC Turning	Pistons, shafts, spools, bushings, sleeves, fittings	Precision diameters, bores, grooves, threads and concentric features
CNC Milling	Valve bodies, manifold blocks, housings, mounting plates	Multi-sided machining, pockets, ports and mounting features
5-Axis CNC Machining	Complex valve bodies, manifolds, multi-angle components	Machining multiple faces and complex geometries in fewer setups
Swiss CNC Machining	Small spools, pins, bushings, fittings and precision inserts	Stable machining of small-diameter, high-precision components
CNC Turn-Mill	Hydraulic adapters, fittings, shafts and complex cylindrical parts	Turning and milling features in a single machining setup
CNC Drilling & Threading	Hydraulic ports, valve bodies and manifold blocks	Precision holes, cross-holes and threaded connections
CNC Grinding	Spools, shafts, pistons and precision sleeves	Fine dimensional control and improved surface finish for mating surfaces

 

Hydraulic-Specific Machining Features

Precision bores for hydraulic cylinders, valves and cartridges

O-ring grooves for sealing applications

Internal and external threads for hydraulic connections

Cross-drilled passages for manifold blocks and valve bodies

Concentric shafts and bores for pistons, spools and rotating components

Flat and sealing faces for valve and manifold interfaces

Fine surface finishes for sliding and sealing surfaces

Send Your Hydraulic Part Drawing

 

For hydraulic components, material selection depends on pressure, load, wear, corrosion exposure, weight, and sealing requirements. We machine a range of metal materials for hydraulic valves, manifolds, cylinders, pumps, fittings, and motion components.

Material	Common Grades	Typical Hydraulic Applications	Key Advantages
Aluminum	6061-T6, 6082, 7075-T6	Valve Bodies, Manifold Blocks, Housings	Lightweight, corrosion resistant, easy to machine
Stainless Steel	304, 316L	Fittings, Valve Bodies, Housings	Corrosion resistance and durability
Stainless Steel	17-4 PH (UNS S17400)	Pistons, Spools, Shafts, Valve Components	High strength, wear resistance and corrosion resistance
Alloy Steel	4140	Pistons, Shafts, Spools, Valve Components	High strength, toughness and wear resistance
Alloy Steel	4340	Heavy-Duty Shafts, Rods, Pistons	High tensile strength and fatigue resistance
Carbon Steel	1018	Bushings, Shafts, General Hydraulic Parts	Good machinability and cost efficiency
Brass	C36000	Hydraulic Fittings, Adapters, Bushings	Excellent machinability and corrosion resistance
Copper	C11000	Thermal & Conductive Components	High thermal and electrical conductivity
Titanium	Grade 2, Grade 5	Lightweight, Corrosion-Resistant Components	High strength-to-weight ratio and corrosion resistance

 

Material Selection for Hydraulic Components

6061-T6 Aluminum - suitable for lightweight valve bodies, manifolds and housings.

7075-T6 Aluminum - used when higher strength is required while maintaining low weight.

316L Stainless Steel - suitable for hydraulic components exposed to moisture, chemicals or marine environments.

17-4 PH Stainless Steel - suitable for high-strength pistons, spools and shafts requiring both strength and corrosion resistance.

4140 Alloy Steel - a common choice for high-load pistons, shafts and hydraulic cylinder components.

4340 Alloy Steel - suitable for heavy-duty components subject to high loads and fatigue.

C36000 Brass - commonly used for precision hydraulic fittings, adapters and bushings.

 

Hydraulic components often require accurate bores, shafts, threads, sealing grooves, mounting surfaces and fluid ports to ensure proper assembly and reliable operation. We machine hydraulic parts according to customer drawings and specified dimensional and geometric tolerances.

Feature	Typical CNC Capability	Hydraulic Applications
Linear Dimensions	±0.01 mm	Valve bodies, manifolds, housings
Bore Diameter	±0.01 mm	Cylinders, valve bodies, sleeves
Shaft Diameter	±0.01 mm	Pistons, rods, spools, shafts
Hole Diameter	±0.01 mm	Mounting holes, fluid passages
Thread Dimensions	According to drawing	Hydraulic fittings, ports, adapters
Concentricity	According to drawing	Pistons, spools, shafts and bores
Flatness	According to drawing	Valve and manifold sealing faces
Perpendicularity	According to drawing	Mounting and sealing surfaces
Surface Roughness	Ra 0.8–3.2 μm	Sliding and sealing surfaces
O-Ring Grooves	According to drawing	Hydraulic cylinders and valve components

 

Surface Finish	Applicable Grades	Typical Hydraulic Applications	Main Benefit
As Machined	6061-T6, 7075-T6, 4140, 304, 316L, C36000	Valve Bodies, Manifolds, Fittings	Precise machined surface
Anodizing	6061-T6, 6082, 7075-T6	Valve Bodies, Manifold Blocks, Housings	Corrosion and surface protection
Hard Anodizing	6061-T6, 6082, 7075-T6	Valve Bodies, Housings, Wear Components	Higher surface hardness and wear resistance
Electroless Nickel Plating	4140, 4340, 1018, 6061-T6	Pistons, Spools, Valve Components	Wear and corrosion resistance
Zinc Plating	1018, 4140, 4340	Fittings, Shafts, Rods	Corrosion protection
Passivation	304, 316L, 17-4 PH	Valve Components, Fittings, Housings	Improved corrosion resistance
Polishing	316L, 17-4 PH, C36000, C11000	Sealing & Sliding Components	Smoother functional surfaces
Grinding	4140, 4340, 17-4 PH	Spools, Shafts, Pistons	Fine dimensional and surface control

 

Hydraulic sealing and mating surfaces require precise dimensions, controlled geometry and consistent surface quality to prevent leakage and ensure reliable component movement. We CNC machine critical interfaces such as bores, O-ring grooves, sealing faces, threads and sliding surfaces according to customer drawings.

 

Key Parameters We Control

Feature	Typical Requirement
Bore Diameter	±0.01 mm*
Shaft / Spool Diameter	±0.01 mm*
O-Ring Groove	Width & depth according to drawing
Concentricity	According to drawing
Flatness	According to drawing
Surface Roughness	Typically Ra 0.8–3.2 μm*
Threads	Metric, NPT, BSP, UNC, UNF & custom

*Actual tolerances and surface roughness depend on the material, component geometry, sealing method and drawing requirements.

 

Need a Hydraulic Sealing Component Machined to Drawing? Send your CAD file or engineering drawing for a machining review and quotation.

 

Hydraulic components require consistent dimensional accuracy and surface quality to maintain proper sealing, smooth movement, pressure retention, and reliable assembly. We inspect critical features throughout CNC machining and before shipment.

Inspection Method	What We Check	Typical Hydraulic Parts
CMM Inspection	Dimensions, position, flatness, perpendicularity, GD&T	Valve Bodies, Manifold Blocks, Housings
Optical Measurement	Profiles, small features, diameters and positions	Spools, Fittings, Small Precision Parts
Micrometer Inspection	External diameters and critical dimensions	Pistons, Shafts, Rods, Spools
Bore Gauge Inspection	Internal diameter and bore consistency	Cylinders, Valve Bodies, Bushings
Thread Gauging	Thread size, pitch and fit	Fittings, Adapters, Valve Ports
Surface Roughness Testing	Ra value and functional surface quality	Bores, Sealing Faces, Sliding Surfaces
Hardness Testing	Material hardness after heat treatment	4140, 4340, 17-4 PH Components
Visual Inspection	Burrs, scratches, dents and machining defects	All Hydraulic Components

 

 

Packaging

Individual Protection - Precision components are individually wrapped or separated to prevent part-to-part contact.

Thread Protection - Threaded fittings, adapters, shafts and ports are protected with caps or suitable protective materials.

Rust Prevention - Carbon steel and alloy steel components can receive anti-rust protection before packing.

Cushioning - Foam, EPE or other suitable cushioning materials are used for precision and finished components.

Carton Packaging - Small and medium-sized components are packed in reinforced export cartons.

Plywood Cases - Large, heavy or bulk hydraulic components can be packed in plywood cases for safer transportation.

 

Typical Lead Time

Order Type	Typical Lead Time
Prototype / Sample	7–15 working days
Low-Volume Production	10–20 working days
Batch Production	15–30 working days
Repeat Production	10–25 working days

 

Need a Hydraulic CNC Machined Component? Send your drawings, material specifications and quantity to receive a machining quotation and production schedule. 

 

1. What hydraulic components can you CNC machine?

We manufacture custom metal hydraulic components including valve bodies, manifold blocks, pistons, spools, bushings, sleeves, shafts, piston rods, fittings, adapters, covers and housings for hydraulic cylinders, valves, pumps and power units.

 

2. What materials do you use for hydraulic CNC components?

Common materials include 6061-T6, 6082 and 7075-T6 aluminum; 304, 316L and 17-4 PH stainless steel; 1018 carbon steel; 4140 and 4340 alloy steel; C36000 brass; C11000 copper; and Grade 2 and Grade 5 titanium.

 

3. What CNC machining tolerances can you achieve?

Our typical CNC machining tolerance is ±0.01 mm. Tighter tolerances can be evaluated for critical dimensions such as hydraulic bores, piston diameters, spool diameters, sealing surfaces and mating features according to the engineering drawing.

 

4. Can you machine O-ring grooves and sealing surfaces?

Yes. We can machine O-ring grooves, sealing faces, precision bores and sliding surfaces according to specified dimensions and surface roughness requirements.

 

5. Can you manufacture hydraulic valve bodies and manifold blocks?

Yes. We machine custom hydraulic valve bodies and manifold blocks with threaded ports, intersecting holes, mounting holes, internal passages and sealing faces according to customer drawings.

 

6. What thread types can you machine for hydraulic components?

We can machine Metric, NPT, BSP, UNC, UNF and other thread specifications according to the customer's engineering drawings or requirements.

 

7. Can you control the bore diameter and concentricity of hydraulic components?

Yes. Critical bores, shafts and mating surfaces can be inspected for diameter, concentricity, perpendicularity, flatness and positional accuracy using appropriate inspection equipment.

 

8. Can you provide material certificates and inspection reports?

Yes. Material certificates and dimensional inspection reports can be provided according to project requirements. Specific documentation can be confirmed before production.

 

9. Do you support hydraulic component prototypes and low-volume production?

Yes. We support prototype, sample, low-volume and repeat production for custom hydraulic CNC machined components.

 

10. What surface finishes are available for hydraulic CNC parts?

Depending on the material and application, available finishes include as-machined, anodizing, hard anodizing, electroless nickel plating, zinc plating, passivation, polishing and grinding.

 

11. How do you inspect hydraulic CNC machined components?

Inspection can include CMM measurement, optical measurement, micrometer inspection, bore gauge inspection, thread gauging, surface roughness testing, hardness testing and visual inspection.

 

12. Can you manufacture hydraulic parts from our drawings or CAD files?

Yes. We can manufacture components from 2D engineering drawings and 3D CAD files, including STEP, STP, IGES and other commonly used CAD formats.

 

13. What is the typical lead time for hydraulic CNC machined components?

Typical lead times are 7–15 working days for prototypes, 10–20 working days for low-volume production, and 15–30 working days for batch production, depending on material, complexity, quantity and finishing requirements.

 

Send us your 2D drawing or 3D CAD file, material grade, quantity and required specifications. Our team will review your requirements and provide a CNC machining quotation.

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