We machine production parts for Hydraulic and Pneumatic Parts customers, from single prototypes through to repeat batches of tens of thousands. Typical work covers manifolds, cylinder bodies and valve blocks, usually in 6061-T6 or 4140.
What makes Hydraulic and Pneumatic Parts different from general machining is not the geometry — it is the documentation and the failure modes. The parts that come back are the ones where cross-drilling breakout burrs are the number one leak source was not designed out at the start.
Parts we machine for Hydraulic and Pneumatic Parts
- Manifolds
- Cylinder bodies
- Valve blocks
- End caps
- Piston rods
Materials we run for Hydraulic and Pneumatic Parts
- 6061-T6
- 4140
- 316L
- C360 brass
- Bronze 932
Standards and documentation
- ISO 4413 (hydraulic), ISO 4414 (pneumatic)
Tell us which standard applies and which documents you need with the shipment. Dimensional reports, material certificates, certificates of conformity and first article inspection reports are all available, and it is much cheaper to agree them before the batch runs than to reconstruct them afterwards.
Where Hydraulic and Pneumatic Parts projects usually go wrong
- Cross-drilling breakout burrs are the number one leak source
- Bore roundness matters more than surface finish alone
Tolerance and finish we hold
| Requirement | Typical capability |
|---|---|
| General tolerance | Bore tolerance H7 to H8, roundness 0.005 mm, Ra 0.4 um |
| Surface finish | Ra 0.4 to 3.2 um |
| Material certification | EN 10204 3.1 on request |
| Inspection | Dimensional report, CMM report, FAIR |
| Packaging | VCI and desiccant for steel, individual wrap for cosmetic faces |
Frequently asked questions
Do you have experience with Hydraulic and Pneumatic Parts parts?
Yes. Typical parts we run are manifolds and cylinder bodies. We can share the process route and inspection approach for a comparable part before you commit.
Which materials do you recommend for Hydraulic and Pneumatic Parts?
6061-T6, 4140, 316L, C360 brass. The right choice depends on which of corrosion, weight, strength and cost is the binding constraint, and we will say so plainly rather than quoting the most expensive option.
What documentation do you provide?
A dimensional report and a certificate of conformity as standard. Material certificates, CMM reports, FAIR and PPAP submissions are available when your quality system requires them.
What tolerances do you hold for Hydraulic and Pneumatic Parts parts?
Bore tolerance H7 to H8, roundness 0.005 mm, Ra 0.4 um is typical for the industry. Tighter tolerance on individual features is possible and is quoted against the specific feature rather than the whole part.
Related pages
- Industries — the full index for this section.
- CNC Machining for Consumer Electronics
- CNC Machining for Food Processing Machinery
- CNC Machining for Aerospace Components
- CNC Machining for Textile Machinery
- Instant CNC quote
- Tolerance quick reference
- Frequently asked questions
Get a price for your part
Send a STEP file and a drawing with tolerances, material and quantity. We quote within one working day and machine in our own facility in Shenzhen — milling, turning, EDM, grinding and finishing under one roof, no trading middleman.
Start an instant quote or send your drawings directly. English-speaking engineering support, DFM feedback before you commit to a batch.