Machining Capabilities
Multi-axis CNC Swiss turning, precision milling, and full secondary operations — all under one roof.
CNC Swiss Turning
Core Competency · ~80% of Shop Capacity
Swiss turning (sliding headstock / guide bush technology) is the foundation of Sze Loi's precision output. The guide bush supports the workpiece directly at the cutting zone, virtually eliminating deflection even in slender, long-reach geometries. The result: exceptionally tight tolerances on features that conventional lathes simply cannot hold.
Our Swiss turning ops are capable of completing complex parts — turned, milled, drilled, threaded, and back-worked — in a single fixturing. This eliminates secondary setups, reduces handling risk, and dramatically compresses lead times for batch sizes from single prototypes through high-volume production runs. Parts Gallery showcases a wide range of parts with intricate features that we have encountered over the years, highlighting the depth of our unique capabilities.
Swiss Turning Machine Fleet
| Machine | Type | Axes | Bar Capacity | Key Feature |
|---|---|---|---|---|
| Citizen Cincom L25 | Swiss CNC Lathe | 7-axis | Ø25mm | Live tooling, sub-spindle, simultaneous operations |
| Citizen Cincom L20 (5M7) | Swiss CNC Lathe | 7-axis | Ø20mm | High-speed cycle time, complex geometries |
| Citizen Cincom L16 (Type VI) | Swiss CNC Lathe | 5-axis | Ø16mm | Precision small-diameter, medical & dental grade |
| Citizen Cincom B12 (Type I) | Swiss CNC Lathe | 3-axis | Ø12mm | High-tolerance short-run and prototype production |
| Sze Loi TL32 | Gang-type CNC Swiss Lathe | 5-axis | Ø32mm | Larger diameter capability, live cross & back tooling, heavy-duty runs |
| Sze Loi TL25 | Gang-type CNC Swiss Lathe | 5-axis | Ø25 | Mid-volume, live cross & back tooling, heavy and stable cut |
| Sze Loi TL20 | Gang-type CNC Swiss Lathe | 5-axis | Ø20mm | Mid-volume, live cross & back tooling, rapid changeover |
| Sze Loi ET15 | Gang-type CNC Swiss Lathe | 3-axis | Ø15mm | High-volume, fast machine cycle runs |
Swiss Turning Capability Specifications
| Parameter | Specification |
|---|---|
| Bar stock diameter range | Ø03.0mm – Ø32mm (Volume Production) Above Ø32mm (Opeators Dependent) |
| Typical tolerance | ±0.008mm (±0.0003") |
| Surface finish achievable | Ra 0.4µm |
| Thread types | Metric, UNC, UNF, NPT, BSPP, ACME, custom |
| Live tooling | Yes — L25, L20, TL32, TL25, TL20 |
| Sub-spindle | Yes — L25, L20, TL32 |
Why Swiss Turning?
- Guide bush supports the workpiece at the cutting zone — eliminates deflection on slender parts
- Single-pass complete machining reduces setups, handling, and contamination risk
- Sub-spindle back-working machines rear features simultaneously — no part re-chucking
- Ideal for medical, aerospace, and electronics where multi-feature precision is non-negotiable
- 45 years of Swiss turning expertise since 1980 — deep process knowledge in hard and exotic materials
CNC Turning & Milling
Auxiliary Machining · Tooling & Complex Profiles
Beyond Swiss turning, Sze Loi operates dedicated CNC turning centres and multi-axis milling machines for components outside the Swiss range — larger diameters, prismatic parts, tooling jigs, and mid-volume machining work.
Our Wire EDM cells are particularly valuable for tight-tolerance internal profiles, cutting slots, intricate contours in hardened tool steel, and producing precision punch and die components. All milling work integrates with our in-house inspection and deburring lines before delivery.
CNC Turning, Milling & EDM Equipment
| Machine | Type | Primary Applications |
|---|---|---|
| Brother TC-S2Z | CNC Tapping Centre | High-speed tapping, drilling, light milling on prismatic parts |
| Dyna Myte 2400 | CNC Vertical Milling Centre | Jig & fixture fabrication, complex contour milling |
| CNC Mill (Various) | CNC Vertical Milling Centre | Boring, drilling, facing, slot milling, tooling production |
| Wire EDM | Wire Electrical Discharge Machine | Tight-tolerance internal profiles, punch & die sets, hardened steel cutting, intricate slot & contour work |
Milling & EDM Capabilities
2D & 3D Profile Milling
Complex contour work, pocket milling, and surface profiling on aluminium, steel, and brass billets.
Boring & Drilling
Precision bore sizing, deep-hole drilling, and reaming for tight fits and press-fit housings.
Wire EDM Cutting
Hardened steel profiles, punches, dies, and intricate internal geometries unachievable by conventional milling.
Tooling & Jig Fabrication
In-house production of workholding fixtures, inspection gauges, and custom tooling for Swiss turning lines.
Tapping & Threading
High-speed rigid tapping across Metric, UNC, UNF, BSP thread forms in all common material grades.
CAM-Driven Production
Full CAM programming from STEP/IGES/DXF files. Rapid first-article turnaround within 5–7 business days.
Secondary Operations
In-House & Vendor-Coordinated Post-Processing
Sze Loi offers a comprehensive range of secondary operations — all coordinated under a single purchase order. From vibratory deburring to precision inspection, sub-assembly, and surface finishing co-ordination, we handle the downstream steps so your parts arrive ready to use.
Tumbling & Deburring
Vibratory barrel tumbling for batch deburring of Swiss-turned parts. Removes micro-burrs and sharp edges without dimensional impact. Appropriate for medical, electronics, and high-precision assemblies where burr-free surfaces are a design requirement.
- Vibratory tumbling (wet and dry media)
- Hand deburring for complex geometries
- Edge breaking to customer-specified radius or chamfer
In-Process Inspection & Final QC
Full in-process and final inspection on every production run. Dimensional records generated per batch. First-article inspection report (FAIR) available on request. Equipment includes profile projectors, digital measuring systems, electronic micrometers, and go/no-go gauge sets.
- First-article inspection report (FAIR) on request
- Statistical process control (SPC) data available
- Dimensional records archived per batch
- Go/no-go gauging for critical features
Assembly & Sub-Assembly
Light assembly and sub-assembly services for multi-component machined assemblies. We consolidate multiple machined parts into customer-specified sub-assemblies, reducing your internal handling steps and inventory tracking overhead.
- Press-fit and screw-fastened sub-assemblies
- O-ring and seal insertion
- Pin and dowel installation
- Kitting and bundling per customer BOM
Packaging & Labelling
Parts are packaged to customer specifications — from bulk poly bags to individually wrapped and labelled parts on custom carriers or trays. ESD-safe packaging available for electronics components. Export packaging with full documentation for customs clearance.
- Bulk, semi-bulk, and individually packaged options
- ESD-safe packaging for electronics parts
- Custom tray and carrier solutions
- Export documentation and commercial invoice preparation
Surface Finishing Co-ordination
Sze Loi maintains long-standing relationships with approved surface finishing vendors in our region. We co-ordinate and manage plating, anodising, heat treatment, and coating on your behalf — all delivered under a single purchase order.
- Electroplating: zinc, nickel, chrome, gold, tin, silver
- Anodizing: Type II (standard) and Type III (hard coat)
- Electroless nickel (including Teflon-impregnated)
- Passivation and black oxide
- Heat treatment: hardening, stress relief, annealing
- Electropolishing for stainless steel
Ready to Start?
Need to know if your part is machinable?
Share your drawing — STEP, IGS, DWG, or PDF — and we'll review your geometry, recommend the optimal process, and provide a detailed quotation within 24 hours.
Submit Your RFQTypically responds within 1 business day · STEP, IGS, DWG, PDF accepted