Precision Internal and External Grinding

Quality, technology, speed and integrity are the core values of Changhong Precision Industry.
Based in Taichung, Taiwan, we specialize in ultra-precision internal grinding, OD grinding, surface grinding, straight-hole grinding, taper grinding and deep-hole grinding. If you need dependable internal grinding in Taichung or outsourced CNC precision grinding, call +886-4-2280-0630 or contact us online.

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About Changhong

Fast, Precise and Professional
Internal Grinding Specialists

Changhong Precision Industry has focused on internal and external precision grinding for many years. We understand the needs of manufacturing customers and provide responsive, professional and cost-effective grinding services so customers can stay focused on their core production work.

Through accumulated experience, continuous equipment investment and ongoing process improvement, Changhong balances efficiency, quality and cost to meet demanding standards for ultra-precision internal grinding, OD grinding and related grinding processes.

Internal grinding in Taichung

Our Advantages

Why Choose Changhong Precision

Internal grinding service

Strict Standards for Precision Grinding

Experience matters in precision grinding. Our technicians have more than ten years of hands-on grinding experience and understand the requirements for ID grinding, OD grinding, internal and external taper grinding, and surface grinding. Every part is processed with the customer’s final assembly and tolerance goals in mind.

Surface grinding service

High-Precision Grinding Equipment

Precision starts with the right machines. Changhong continues to invest in and tune CNC internal and external grinding machines, internal cylindrical grinders, computer-controlled grinding equipment and tooling to achieve stable, repeatable grinding results.

Precision grinding equipment

Skilled Technicians and Craftsmanship

We pass on grinding know-how through daily production, training and inspection discipline. Quality, delivery time and dimensional stability are built into our workflow so customers can rely on Changhong for demanding internal and external grinding work.

Changhong Precision Industry

Comprehensive Grinding Services

From double-side grinding, internal and external grinding, taper grinding and deep-hole grinding to accuracy targets of 0.002 mm and concentricity control within 0.003 mm, our CNC grinding capability and inspection equipment help ensure strict production standards.

Services

Precision Grinding Services

Changhong Precision provides complete precision grinding services in Taichung and central Taiwan, including Dali, Taiping, Daya, Fengyuan, Tanzi, Wufeng and Changhua. We also accept outsourced precision grinding orders from customers across Taiwan.

Internal Grinding / ID Grinding OD Grinding Surface Grinding Taper Grinding Deep-Hole Grinding Internal and External Taper Grinding V-Angle OD Grinding CNC Precision Grinding Double-Side Grinding Blind-Hole Internal Grinding
0.002mm
Grinding Accuracy
0.003mm
Concentricity Control
Ra0.6
Internal Surface Roughness
10+ yrs
Technician Experience

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Precision internal grinding for every micron, built for long-term stability and product quality.

For internal grinding, OD grinding, taper grinding or deep-hole grinding requirements, please call +886-4-2280-0630.

FAQ

Precision Grinding Questions and Answers

What grinding services does Changhong Precision provide?
Changhong Precision provides a full range of precision grinding services, including internal grinding / ID grinding, OD grinding, surface grinding, taper grinding, deep-hole grinding, double-side grinding, blind-hole internal grinding, V-angle OD grinding and CNC precision grinding.
What grinding accuracy can Changhong Precision achieve?
Using ultra-precision CNC grinding equipment, Changhong can reach grinding accuracy up to 0.002 mm, control concentricity within 0.003 mm, and keep internal surface roughness below Ra0.6 for demanding precision components.
What is internal grinding?
Internal grinding, also called ID grinding or internal cylindrical grinding, is a precision grinding process for the inside diameter of a workpiece, including bores, blind holes and deep holes. Compared with turning or boring, internal grinding is better suited for parts that require tight bore size control, concentricity, roundness and low surface roughness. Changhong provides internal grinding in Taichung for customers that need stable bore accuracy and surface quality.
Which industries use internal grinding, and what are the upstream and downstream industries?
Internal grinding is widely used in machine tools, transmission components, motors and gears, automotive and motorcycle parts, automation equipment, molds, hydraulic components and pneumatic components. Upstream industries include steel materials, forging, casting, heat treatment, turning, milling and semi-finished component suppliers. Downstream industries include machinery assembly plants, equipment manufacturers, precision component makers, maintenance providers and retrofit service companies. Located in Taichung, Changhong supports the central Taiwan manufacturing supply chain with reliable outsourced internal grinding and precision grinding services.
Where is Changhong Precision located, and how can I contact the company?
Changhong Precision Industry Co., Ltd. is located at No. 6, Ln. 28, Dongmen Rd., East Dist., Taichung City, Taiwan.
Phone: +886-4-2280-0630
Fax: +886-4-2280-5659
Line ID: morusker007
Email: [email protected]
Business hours: Monday to Friday, 08:00-18:00
Which areas does Changhong serve?
We mainly serve Taichung and central Taiwan, and we also accept outsourced precision grinding orders from other cities and counties. Please contact us to discuss your parts and tolerance requirements.
What are Changhong Precision’s grinding advantages?
Changhong has worked in ultra-precision grinding for more than a decade. Our technicians have over ten years of grinding experience and continue to improve internal grinding, OD grinding, taper control and precision measurement processes. This focus has earned the trust of manufacturing customers in Taichung and central Taiwan.
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