Place of Origin: Guangdong, China
Material Introduction:
This zirconia ceramic plunger rod is made from yttria-stabilized zirconia ceramic (Y-TZP), a tough technical ceramic known for high strength, wear resistance, and chemical stability. Compared with metal plunger rods, zirconia helps reduce surface wear, corrosion, media contamination, and sealing instability in pump systems. Learn more about our Zirconia Ceramics.
Functional Features:
Designed for reciprocating motion and precision sealing applications. The rod surface can be precision ground and polished to support smooth movement against seals, sleeves, and guide bushings. It offers good fracture toughness, low friction, corrosion resistance, dimensional stability, and no metal ion contamination during contact with clean or corrosive fluids.
Application Industries:
Suitable for metering pumps, plunger pumps, dosing pumps, chemical pumps, pharmaceutical filling systems, battery electrolyte injection systems, semiconductor wet process equipment, analytical instruments, and medical fluid control devices. Related product categories include Ceramic Pump Components and Precision Ceramic Components.
Delivery Time:
Delivery time is evaluated based on rod length, diameter, straightness, roundness, surface roughness, sealing area requirements, end structure, inspection standards, and order quantity. Please provide drawings, samples, or working conditions for a project-based lead time review.
CERAMPRO zirconia ceramic plunger rods are precision-machined from yttria-stabilized zirconia ceramic (Y-TZP / ZrO₂) for pump and fluid control systems. They can be used as plunger rods, piston rods, ceramic shafts, and reciprocating moving parts in metering pumps, dosing pumps, chemical pumps, filling equipment, clean fluid systems, and other applications where metal components may wear, corrode, scratch seals, or contaminate the working media.
Compared with many metal pump rods, zirconia ceramic offers excellent wear resistance, good corrosion stability, high mechanical strength, and a smooth polished surface. These properties make it suitable for sealing contact areas, repeated sliding motion, and precision fluid control assemblies.
Material: Yttria-Stabilized Zirconia Ceramic (Y-TZP / ZrO₂)
Y-TZP zirconia is a high-toughness technical ceramic widely used for precision moving parts. It provides good strength, wear resistance, and low friction after polishing. When used with seals, sleeves, guide bushings, or pump chambers, zirconia helps reduce wear and supports stable reciprocating movement.
More zirconia material options are available in our Zirconia Ceramics category.
| Parameter | Technical Indicator | Remarks |
|---|---|---|
| Material | Yttria-Stabilized Zirconia Ceramic (Y-TZP) | High-toughness industrial ceramic grade |
| Density | 6.0–6.05 g/cm³ | Dense ceramic structure with low porosity |
| Vickers Hardness | 1200–1350 HV | Much harder than stainless steel |
| Flexural Strength | 900–1200 MPa | Suitable for precision rod and shaft components |
| Fracture Toughness | 8–12 MPa·m1/2 | Helps reduce cracking risk during assembly and operation |
| Surface Roughness | Ra ≤ 0.1 μm | Achievable after precision grinding and polishing, depending on structure |
| Roundness / Cylindricity | 0.001–0.005 mm | Can be controlled according to size and tolerance requirements |
| Thermal Expansion | 10.5 × 10-6 /K | Compatible with many metal assemblies |
| Max Operating Temperature | 800°C–1000°C | Depends on working condition, load, and assembly design |
| Custom Processing | Diameter, length, steps, grooves, threads, end faces, polishing | Produced according to drawings or samples |
Note: The above values are typical reference data. Final material grade, tolerance range, surface finish, and inspection standard should be confirmed according to the drawing, working media, sealing design, and actual operating conditions.
| Material | Main Characteristics | Recommended Applications |
|---|---|---|
| Zirconia Ceramic | Good toughness, high strength, wear resistance, low friction, and corrosion resistance | Plunger rods, piston rods, pump shafts, sleeves, and precision moving parts |
| Alumina Ceramic | High hardness, good insulation, stable performance, and cost-effective | General wear parts, pump sleeves, valve parts, and insulating components |
| Silicon Carbide Ceramic | Excellent wear resistance, chemical resistance, thermal stability, and thermal conductivity | Highly corrosive media, high-temperature pump parts, seal rings, and harsh fluid systems |
| Stainless Steel | Easy to machine and assemble, but may wear, corrode, or contaminate media in harsh conditions | Standard pump rods where corrosion, wear, and cleanliness are not major concerns |
In addition to zirconia ceramic plunger rods, CERAMPRO also provides custom ceramic pump sleeves, ceramic pistons, ceramic valve seats, ceramic seals, ceramic shafts, and other precision ceramic components. Related products are available in our Ceramic Pump Components and Precision Ceramic Components pages.
They are mainly used in metering pumps, dosing pumps, plunger pumps, filling equipment, and other fluid control systems as plunger rods, piston rods, ceramic shafts, or reciprocating moving parts.
Zirconia ceramic provides better wear resistance and corrosion resistance than many metals. It also avoids the risk of metal ion contamination, making it suitable for chemical, pharmaceutical, semiconductor, and clean fluid applications.
Yes. After precision grinding and polishing, zirconia ceramic has a very smooth surface that can work reliably with seals, sleeves, and guide bushings, helping reduce friction and wear.
Yes. We can customize diameter, length, steps, grooves, threaded ends, end faces, chamfers, sealing areas, and surface roughness according to customer drawings or samples.
For suitable structures, surface roughness can reach Ra ≤ 0.1 μm after precision grinding and polishing. The actual result depends on part size, structure, and inspection requirements.
Yes. Long and slender zirconia rods can be manufactured, but the length-to-diameter ratio, straightness, deformation control, grinding stability, and transportation protection should be reviewed carefully.
Yes. Zirconia ceramic offers good corrosion resistance, a smooth surface, and low contamination risk, making it suitable for many chemical and pharmaceutical fluid applications.
In selected wet process and clean fluid systems, zirconia ceramic plunger rods can be used as corrosion-resistant, dimensionally stable, and low-contamination moving parts. The working media and operating conditions should be confirmed before production.
Common inspection items include diameter, length, straightness, roundness, cylindricity, surface roughness, end face quality, and any special dimensions shown on the drawing.
Please provide drawings or samples, material requirements, dimensions, tolerances, surface roughness, sealing area requirements, working media, pressure, quantity, and inspection standards. We can review the structure and provide manufacturing suggestions based on the application.
