Product Overview

99% alumina ceramic positioning rings are precision ceramic components manufactured from high-purity aluminum oxide (Al?O?) materials. They provide excellent hardness, wear resistance, electrical insulation, corrosion resistance, and dimensional stability, making them suitable for high-precision positioning applications requiring reliable performance and long service life.

These ceramic positioning rings are commonly used as alignment rings, support rings, locating components, and precision fixture parts. Custom inner and outer diameters, thicknesses, grooves, tolerances, and surface finishes are available according to customer drawings, CAD files, or specific application requirements.

Applications & Industries

99% alumina ceramic positioning rings are widely used in:

• Semiconductor Equipment: wafer positioning parts, process fixtures, and precision alignment components.

• Electronic Manufacturing: assembly fixtures, inspection tools, and insulating support parts.

• Industrial Automation: locating rings, guide components, and precision tooling parts.

• Precision Machinery: wear-resistant positioning elements requiring high accuracy.

• Vacuum Systems: clean ceramic components for stable operation.

• High-Temperature Equipment: heat-resistant support and positioning parts.

Manufacturing Process

The production process includes alumina powder preparation, ceramic forming, high-temperature sintering, precision machining, surface grinding, polishing, and quality inspection.

Available processes include:

• Dry pressing and molding

• Ceramic sintering

• CNC ceramic machining

• Diamond grinding and polishing

• Precision inner and outer diameter machining

Advanced ceramic processing technologies are used to achieve accurate dimensions, smooth surfaces, and stable material performance.

Machining Capability & Equipment

Our 99% alumina ceramic positioning rings are manufactured using:

• CNC ceramic machining centers

• Precision cylindrical grinding machines

• Diamond grinding systems

• Surface finishing equipment

• Coordinate Measuring Machines (CMM)

Typical machining tolerance can reach ±0.01 mm, with customized control of inner diameter, outer diameter, concentricity, roundness, flatness, thickness, and surface roughness.

Material Options

Available alumina grades include:

• 95% Alumina: suitable for general positioning and insulation applications.

• 96% Alumina: widely used for industrial ceramic components.

• 99% Alumina: provides high purity, excellent hardness, and chemical stability.

• 99.5% Alumina: ideal for semiconductor and high-performance applications.

Customized 99% Alumina Ceramic Positioning Ring Solutions

We provide complete customization services from material selection and structural design to precision machining and inspection. Our 99% alumina ceramic positioning rings deliver excellent wear resistance, dimensional accuracy, insulation performance, and long-term reliability for semiconductor, electronics, automation, and precision industrial applications.