Yujie Piezoelectric Ceramic Ring Series
Yujie's premium piezoelectric ceramic rings engineered for superior ultrasonic transducer performance. Yujie's PZT ring series delivers exceptional energy conversion efficiency with consistent electromechanical coupling coefficient (Kp ≈ 0.42) and ultra-low impedance (≤20Ω). Available in frequencies from 27-44 kHz, these piezo ceramic rings are the industry standard for ultrasonic cleaning transducers and ultrasonic welding equipment.
Features & Applications
Key Applications & Benefits
- •Ultrasonic Cleaning Systems: HJ-32/11 through HJ-50/20 series optimized for 32-44 kHz cleaning transducers with capacitance up to 2550pF
- •Ultrasonic Welding Equipment: HJ-38/42K through HJ-60/27K series designed for high-power 27-42 kHz welding applications
- •Industrial Transducers: Consistent Kp 0.42 ensures predictable performance across all ring sizes from Ø32mm to Ø60mm
- •Custom Manufacturing: All specifications can be tailored to your exact frequency, impedance, and dimensional requirements
Need custom specifications or bulk orders? As a leading piezoelectric ceramic manufacturer, we provide OEM/ODM services with fast lead times and competitive pricing for your ultrasonic transducer projects.
Complete Ring Series Technical Specifications
Detailed electrical and mechanical parameters for ultrasonic cleaning and welding transducer rings. All measurements at room temperature (25°C).
How to Select a Ring for a Real Stack
A piezo ring is not selected by frequency alone. In Yujie's engineering review, the useful question is whether the ceramic remains stable after clamping, bonding, heating, and acoustic loading. Use the notes below to turn a catalog comparison into a ring RFQ that can be tested.
Cleaning stacks
Use lower impedance ring ceramics when the tank, bonding layer, and generator can keep the ceramic inside a stable thermal window.
Ask for resonance and impedance checks after sample bonding, not only loose ceramic values.
Welding stacks
Treat the ring as part of a bolted mechanical system. Preload, horn mass, backing mass, and ceramic thickness decide whether the stack holds frequency under power.
Confirm the intended bolt layout, preload method, capacitance band, and stack-frequency target before approving a model.
Custom OEM rings
When diameter, inner hole, thickness, or electrode pattern changes, the old datasheet cannot be reused as proof of performance.
Use pilot samples to measure impedance spread, capacitance spread, and assembly behavior before batch release.
RFQ fields that prevent wrong samples
- Target operating frequency after the ring is assembled in the stack
- Outer diameter, inner diameter, thickness, and electrode requirement
- Cleaning, welding, atomization, or another high-power use case
- Generator power, duty cycle, and expected operating temperature
- Horn or backing mass drawing if the ring is used in a bolted stack
- Required outgoing records: impedance curve, capacitance range, dimensional report, or batch summary
Validation guides for ring projects
- Why a ring-based transducer can be in-spec and still fail
- How cleaning acoustics change ring and ceramic requirements
- Common OEM integration mistakes after sample approval
Need Ring Geometry Guidance for Your Stack?
Share power target, horn design, preload method, and operating frequency so our team can recommend a ring configuration for stable output.
Manufacturing Excellence
Over 20 years of experience producing high-quality PZT ceramic rings for global ultrasonic equipment manufacturers. Our advanced production facilities ensure consistent quality and tight tolerance control (±0.02mm dimensional accuracy).
Quality Assurance
Every piezoelectric ring undergoes rigorous testing including frequency response analysis, impedance measurement, and electromechanical coupling verification. ISO 9001:2015 certified manufacturing process.
Custom Solutions
Whether you need modified dimensions, custom frequencies, or special electroding patterns, our engineering team works closely with you to develop the perfect piezo ceramic ring for your application.
Competitive Pricing
Direct manufacturer pricing with volume discounts available. Fast prototype turnaround (7-14 days) and reliable production lead times (3-4 weeks) for larger orders.
Looking for a piezoelectric supplier?
Explore our comprehensive supplier services for your specific needs
PZT Material Supplier
High-quality PZT ceramics & custom formulations
Piezoelectric Component Supplier
Discs, rings, plates & custom components
Ultrasonic Transducer Supplier
Custom transducers & sensing solutions
Recommended Ring Guides
Use the ring series page as the product entry point, then choose the guide that matches your next decision: shape selection, custom ring engineering, or ring procurement and QA.
Geometry Selection Hub
Start here if your team is still comparing rings against discs, tubes, rectangular plates, or focused shapes.
Custom Ring Engineering for OEM Programs
Use this guide when the geometry is already ring-based and the next question is custom specification, prototype logic, and application-specific design.
Piezo Ring Procurement and QA Checklist
Use this guide for supplier due diligence, MOQ and lead-time risk, incoming QA, and ring-specific sourcing controls.