Precision Machining of Hydraulic & Pneumatic Components
In hydraulics, the seal is everything. A scratch across a sealing land, an out-of-round piston rod, or an O-ring groove cut to the wrong finish, and the component leaks. Tai Phat Precision machines high-precision hydraulic and pneumatic components with the sealing-surface finish and dimensional control that leak-free performance depends on. We machine the components — we're not selling you a hydraulic system.
What We Machine
- Valve blocks & manifolds — cross-drilled bodies with precise port geometry and flat, fine-finished sealing faces (surface-ground where the drawing calls for it).
- Piston rods & guide rods — finished on our in-house centreless grinder for high roundness and the fine finish sealing contact needs (to Ra 0.4, or Ra 0.2 on suitable parts).
- Cylinder caps & end covers — bore and face tolerances that keep the assembly sealed.
- Fittings, adapters & valve sleeves — turned to tight tolerance with clean O-ring grooves.
Why These Parts Are Demanding
- Sealing-face finish — O-ring grooves and sealing lands live or die on surface finish; we specify and hit the Ra the drawing needs (e.g. Ra 0.8 by fine turning; Ra 0.4 by grinding on flat faces and straight round parts up to Ø40 mm), rather than leaving "smooth" to interpretation.
- Roundness & straightness — piston rods need high roundness for even seal contact; centreless grinding delivers it where turning alone can't.
- Material & corrosion — grade choice drives corrosion and wear behaviour; deep-bore honing and hard-chrome plating are coordinated through partners when a rod needs them.
Materials We Machine
Carbon and engineering steels (S45C, SCM440/42CrMo4) for rods and bodies · stainless steel (304, 316/316L) where corrosion matters · aluminium and brass for lighter fittings. Machining after heat treatment available; honing and hard chrome coordinated.
Quality Control
Roundness/runout checks on rods, bore and groove dimensions verified, sealing-face roughness measured on our in-house surface-roughness tester; first-article and critical features on the CMM.