Assembly
From Individual Parts to Finished Assembly — Cross-Process Mixed Assembly, One-Stop Delivery
Your product typically cannot be completed by a single manufacturing process. CNC-machined parts, die castings, stampings, turned parts, gears. Regardless of which process produced them, we assemble them accurately into functional sub-assemblies or finished products.
Types of Parts We Can Assemble
| Part Type | Typical Part Examples | Common Assembly Operations |
| CNC Machined Parts | Valve bodies, housings, brackets, precision bushings | Threaded fastening, bearing press-fitting, seal installation |
| Die Castings | Aluminum alloy housings, heat sinks, bases | Insert fitting, riveting, adhesive/dispensed sealing |
| Stampings | Sheet metal brackets, panels, spring clips, housings | Riveting, snap-fit assembly, spot welding |
| Turned Parts | Pins, nuts, connectors, sleeves | Press-fitting, thread locking, clearance-fit assembly |
| Gears | Spur gears, helical gears, worm wheels, worm shafts | Gear-shaft press-fitting, gearbox casing assembly, backlash adjustment |
| Extruded Parts | Profile guide rails, tubes, sealing strips | Cutting to length, interlocking, seal strip insertion |
Assembly Types We Offer
1. Mechanical Fastening Assembly
| Assembly Method | Applicable Part Combinations | Precision Capability |
| Press-Fitting | Shaft-to-bore, bushings, bearings, gear-to-shaft | Interference fit tolerance ±0.01 mm; controlled press-in force |
| Threaded Fastening | Turned parts + housings, nuts + bolts | Controlled torque; thread locking adhesive optional |
| Riveting | Between stampings; die castings + sheet metal | Pneumatic / hydraulic riveting; pull riveting and compression riveting |
| Snap-Fit Assembly | Plastic parts, stamped spring clips | Snap engagement force measurable |
2. Adhesive Bonding & Sealing
| Assembly Method | Application | Process Notes |
| Structural Adhesive Bonding | Metal-to-metal, metal-to-plastic, gear-to-shaft | Controlled bond strength; high-temperature and oil-resistant grades available |
| Sealant / Dispensed Adhesive | Die-cast housing sealing, threaded joint sealing | Airtightness achievable to IP67 |
| O-Ring / Gasket Installation | Valve bodies, connectors, gearboxes | Automatic lubrication application available |
3. Welding (For Specific Parts)
| Welding Method | Applicable Parts | Typical Application |
| Ultrasonic Welding | Small plastic parts, precision sub-assemblies | Sensor housings, plastic gear carriers |
| Resistance Spot Welding | Stampings, sheet metal parts | Sheet metal brackets, grounding tabs |
| Laser Welding | Precision metal parts, gear-to-shaft joints | High precision, minimal heat-affected zone |
4. Gearbox & Power Transmission Assembly
| Assembly Item | Capability Description |
| Gear-Shaft Press-Fitting | Concentricity ≤ 0.02 mm; press-in force monitored |
| Gear Backlash Adjustment | Backlash controlled to 0.05-0.15 mm |
| Gearbox Casing Assembly | Bearing preload setting, sealing, torque verification |
| Gear Drive Noise Testing | Noise level quantitatively assessed |
Typical Finished Assembly Case Studies
| Industry | Finished Assembly | Part Types Involved | Assembly Operations |
| Automotive | Wiper motor assembly | Die-cast housing + CNC shaft + gears + stamped bracket | Press-fitting + gearbox assembly + sealing + functional test |
| Power Tools | Gearbox assembly | Turned shaft + gears + die-cast housing + bearings | Press-fitting + backlash adjustment + torque testing |
| Medical | Precision valve assembly | CNC valve body + turned valve spool + O-rings + spring | Seal assembly + leak testing |
| Industrial Equipment | Pneumatic cylinder assembly | Extruded aluminum cylinder body + CNC end cap + stamped piston rod | Threaded fastening + sealing + actuation testing |
| Electronics | Thermal management module | Die-cast heat sink + CNC base plate + fan + thermal pad | Screw fastening + fan assembly + thermal pad lamination |
Our Assembly Capability Parameters
| Capability Item | Reference Range |
| Parts per Assembly | 2-50 parts per assembly |
| Max. Assembly Dimensions | 800×600×400mm (expandable upon request) |
| Press-Fit Accuracy | Interference fit tolerance ±0.01 mm; positional accuracy ±0.05 mm |
| Torque Control | 0.1-50 N·m, with data logging and traceability |
| Leak Testing | 1-1000 kPa test range; acceptable leak rate ≤ 1 cc/min |
| Functional Testing | Custom test fixtures built to customer specifications |
| Visual Inspection | Manual visual inspection; CCD automated inspection optional |
| Packaging & Shipment | Packaged to specification; instruction sheets and labels available |
Our Supply Chain Integration Capability
If we also manufacture some of the component parts (such as die castings, CNC parts, or extrusions), you benefit from:
✅ Combined parts + assembly quotation — no need to split the scope
✅ Reduced logistics and inventory — parts flow directly into the assembly line upon completion
If you already have parts supplied by other vendors, you can send them directly to us for assembly — we work with parts from any source.
Send us a finished product drawing and we will tell you:
