Housing / Enclosure Parts
Gearbox housings, motor cases, valve bodies, cavities
- Material Cast iron HT250, Al ADC12, SS 304, cast steel ZG270-500
- Process CNC milling, boring, drilling, tapping, surface grinding
- Tolerance ±0.03mm
- Lead Time 20-35 days
Product Details
We specialize in large aluminum housings (battery pack lower shells, cabinet bases) and cast iron/steel bearing housings — bore H7, roundness ≤0.01mm, PCD ±0.05mm — with surface grinding, stress-relief aging, and leak testing.
Applications
- Gearbox housings
- Servo motor enclosures
- Hydraulic valve bodies
- Pump cavities
- Reducer housings
Typical Size Range
- Min
- 50×50×50mm
- Max
- 800×600×500mm
- Other
- Single-piece weight ≤200kg
Common Materials
| Material Grade | International Standard | Typical Application |
|---|---|---|
| Cast iron HT250 | FC250 / GG25 | General gearbox housings |
| Aluminum ADC12 | A383 | Motor cases, valve bodies (die-cast rough) |
| SS 304 | AISI 304 | Food and medical enclosures |
| Cast steel ZG270-500 | WCB | High-pressure vessels, pumps |
Process Capabilities
- Large CNC machining centers (travel 1000mm+)
- Precision boring (bearing seats H7)
- Surface grinding (flatness Ra1.6)
- Drill-tap combined (threaded, oil passages)
- Aging for stress relief
Housing / Enclosure Parts Part Gallery
Finished parts and typical process features (2 photos)
01 
02 Frequently Asked Questions
Are housings cast or machined from billet?
Both. Cast for high-volume (cost-effective); CNC from billet for low-volume. We can coordinate casting suppliers, but all finishing happens in-house.
Is stress relief required after machining?
Yes — cast iron/steel parts require natural or artificial aging after roughing, with X-ray or vibration aging testing before finish machining.
How are deep internal cavities cleaned?
All oil ports and seal cavities are high-pressure washed and air-blown before assembly, ensuring no chip residue.
Can you do pressure / leak testing?
Yes — hydraulic valve and pump bodies support 1.5× working-pressure hydrostatic testing for 5-30 min, with test reports.
Detailed Content
Housing / Enclosure Parts
Housings and enclosures are the outer shells and load-bearing structures of mechanical equipment, with internal precision bearing seats, guide surfaces and sealing chambers requiring high machining accuracy.