Custom Precision CNC Machining Services

Component Scope

Components We Machine

Our work ranges from small turned components to complex milled housings for the industrial applications below.

EV Charging Components

Machined metal components used in EV charging connectors and related electrical assemblies.

terminals · contact pins · sleeves · conductive components
Electrical Connector Components

Small machined parts for connector assemblies where dimensional fit, alignment, and contact positioning must be controlled.

copper-alloy contacts · contact sockets · threaded sleeves · metal housings
Automotive Components

Turned components for automotive assemblies, including parts produced in repeat batches to defined dimensional requirements.

shock absorber inner tubes · precision sleeves · shafts · turned parts
Medical Equipment Components

Machined components for medical equipment assemblies, including small parts with detailed dimensional and surface requirements.

precision shafts · sleeves · tubular parts · multi-hole components
Optical Communication Components

Compact machined components for optical communication equipment, including parts with fine holes, slots, and mounting features.

metal housings · precision sleeves · mounting parts · structural components
Instrumentation & Industrial Equipment Components

Turned and milled components used in instrument assemblies and industrial equipment, from internal mechanisms to enclosure and mounting structures.

machined housings · frames · knobs · mounting parts

MACHINING CAPABILITIES

CNC Turning and Milling Capabilities

Workersbee combines Swiss-type CNC turning with multi-axis machining for turned parts, turn-milled components, and milled parts with features on multiple faces.

Swiss-Type CNC Turning & Turn-Mill Machining

Swiss-type CNC machining is used for small-diameter parts produced from bar stock, including components with turned profiles, cross holes, flats, slots, and threads.
1. Main- and sub-spindle machining
2. Front and side live tooling
3. Turning, drilling, milling, and threading
4. Up to 6-axis configurations
5. Automatic bar feeding
CNC Machining Centers

Machining centers are used for housings, frames, mounts, and other parts with milled contours, pockets, holes, and threaded features.
1. 3-, 4-, and 5-axis configurations
2. Milling, drilling, tapping, and boring
3. Rotary-table machining
4. Deep-hole and small-diameter drilling
5. Complex contours and 3D surfaces

TECHNICAL PARAMETERS

Machining Precision & Technical Parameters

The values below indicate achievable machining capability. Final tolerances are confirmed after reviewing the part drawing, material, size, geometry, and production volume.

Parameter	Reference Value
Maximum Bar Diameter — Swiss-Type CNC	Up to Ø38 mm
Machining Center Travel — X × Y × Z	500 × 400 × 330 mm
Dimensional Tolerance	0.006 mm
Circular Runout	0.005 mm
Roundness	0.005 mm
Straightness	0.005 mm
Flatness	0.005 mm
Cylindricity	0.005 mm
Perpendicularity	0.005 mm
Surface roughness, turning / milling	Ra 0.6 μm
Surface roughness, drilling	Ra 0.8 μm

MATERIAL OPTIONS

Materials We Machine

The material grades below reflect our current machining scope. Suitability and availability are confirmed for each drawing and production requirement.

Stainless Steels

SUS303, SUS304, SUS316L, SUS430, SUS440, SUS630 (17-4PH)

Grades covering machinability, corrosion resistance, and higher-strength requirements.
Carbon & Tool Steels

1215, 1144, S45C, 1015, S15C, SKD11

Free-machining, medium-carbon, and tool steels for different strength and wear requirements.
Copper & Copper Alloys

C3604, C3602, HPB59-1, Tin Bronze, CUW20/80, CUW10/90

Brass, bronze, and copper-tungsten options for conductive and wear-related components.
Aluminum Alloys

6061-T6, 6063, 7075-T6, 5052, 2011-T3

Common machining grades for lightweight housings, frames, and structural parts.
Engineering Plastics

PEEK, Teflon, POM, PTFE

Machinable polymers selected according to dimensional stability, friction, insulation, and chemical-resistance requirements.
Controlled-Expansion Alloys

Kovar, 4J29, 4J36, 4J42

Low- and controlled-expansion alloys for precision assemblies and sealing applications.

Post Machining Support

Secondary Processing & Surface Treatment Support

Selected finishing and cleaning operations are completed in-house. Other surface treatments are coordinated through long-term processing partners according to part specifications.

In-house Secondary Processing
1. Magnetic polishing
2. Vibratory polishing
3. Centrifugal Barrel Finishing
4. Wet Sandblasting
5. Dry Sandblasting
6. Ultrasonic Cleaning
These operations support deburring, surface preparation, appearance improvement, and cleaning after machining.
Surface Treatment Support
1. Electroplating
2. Anodizing
3. Spray painting
4. Electropolishing
5. Heat treatment
The treatment type and acceptance requirements are confirmed during project review.

Quality Control

Quality Inspection & Process Control

We use dimensional, surface, and automated inspection methods to verify machined parts against drawing requirements.

25+ Quality Inspection Personnel

Dimensional Measurement
1. Vision Measuring System
2. Height Gauges
3. Outside Micrometers
4. Thread and Plug Gauges
Surface & Appearance Inspection
1. Surface Roughness Measurement
2. Film Thickness Measurement
3. CCD Video Microscope Inspection
4. Visual Defect Inspection
Automatic Detection & Sorting
1. Go/No-Go Inner Diameter Inspection
2. Contact-Type Length Measurement
3. Automatic Sorting and Rejection
4. Automatic Counting

MANUFACTURING FOUNDATION

Manufacturing Scale & Quality Systems

Our precision machining operations are supported by two manufacturing bases, dedicated CNC capacity, and established quality management systems.

2

Manufacturing Bases

Production sites in Suzhou and Wuhan
150+

Employees

Supporting precision machining operations across the two manufacturing sites.
100+

Units of Machining Equipment

CNC lathes, machining centers, wire EDM, and other production equipment.
66

Swiss-Type CNC Lathes

Tsugami and Citizen machines equipped for bar-fed turning and turn-mill production.
27

FANUC Machining Centers

16 equipped with fourth-axis rotary tables and 1 configured for five-axis machining.
ISO 9001 & IATF 16949

Quality Management Systems

Quality management certifications for general manufacturing and automotive-sector operations.

PROJECT PROCESS

Start Your Precision Machining Project

Send your drawings and project requirements for an initial review. We clarify the specifications and define the production approach before quotation, sampling, and batch production.

Contact our Machining Team

01

Submit Your Drawings

Provide available 2D or 3D drawings, material, quantity, tolerances, surface treatment, and inspection requirements.
02

Drawing & Requirement Review

We review the part geometry, specifications, and machining feasibility, then clarify any open technical points.
03

Process Planning & Quotation

Based on the agreed requirements, we define the machining route and inspection scope and provide a quotation and production schedule.
04

Sample Production & Approval

When required, samples are machined and inspected for customer review before batch approval.
05

Batch Production

Production follows the approved specifications, with inspection applied according to the agreed requirements.

Start with a Drawing Review

Send us your available drawings and project details. We will review the requirements and follow up on any technical points needed for quotation.

Send Drawings for Review

Precision CNC Machining for Custom Industrial Components