DAOLER® Friction Shims: Micron-Level Precision – Defining Ultimate Reliability for Rotary Engine Power Transmission
In the high-speed, high-torque world of rotary engines, the reliability of every single critical component directly determines the success or failure of the entire powertrain system. For twin-rotor engines, and especially aviation-grade rotary engines, the core precision parts must not only withstand immense mechanical loads but also maintain zero-defect operation under extreme conditions.
Based on a deep insight into this challenge, DAOLER® Friction Shims – with micron-level precision and strict quality control adhering to both automotive and aviation standards – provide unprecedented safety assurance and performance enhancement for rotary engine powertrains.
Dual-Standard Quality Control: Balancing Mass Production for Automotive with Compliance for Aviation
The design, manufacturing, and inspection processes of DAOLER® Friction Shims strictly follow a dual-dimension quality control system – combining automotive (civil) standards with aviation airworthiness standards. This approach not only ensures the stability of mass production but also allows the shims to meet the stringent compliance requirements of high-end aviation applications, such as light sport aircraft.
1.Design and Tolerances: Drawing generation, geometric tolerance specification, and general tolerance control strictly adhere to international standards such as ISO 128, ISO 1101, and ISO 2768. The resulting high dimensional accuracy and strong interchangeability allow seamless adaptation to various rotor engine models of the same specifications.
2.Environmental Compliance: Fully complies with the GB/T 30512-2014 standard for prohibited substances in automotive applications – non-toxic, environmentally friendly, and fully qualified for mass production of civil powertrain equipment.
3.Aviation Airworthiness: Deeply conforms to core aviation airworthiness standards including ASTM F2339-19a, CCAR-33-R2, and RTCA/DO-160G. Through multiple rounds of compliance validation, DAOLER® Friction Shims are proven stable for integration into aviation-grade rotary engine powertrains for light sport aircraft, meeting the stringent safety and reliability requirements of the aviation sector.
Industry-Leading Performance: Eliminating Micro-Slip for Zero-Loss Power Transmission
The superior performance of DAOLER® Friction Shims stems from the relentless pursuit of excellence in materials, processes, and surface engineering.
1.Surface Roughness strictly controlled to Rz < 12.5μm – The microscopic topography of the shim's mating surface is precision-machined to ensure uniform contact and controlled wear.
2.Static Friction Coefficient (μs) ≥ 0.45 – Significantly exceeding typical industry levels, this provides exceptional mechanical interlocking capability, completely eliminating micro-slip and loosening at bolted or mated interfaces under high-speed, high-torque conditions, achieving true zero-loss power transmission.
Ultra-High Cleanliness: Protecting Critical Engine Mating Surfaces
Engine assembly environments are extremely sensitive to particulate contamination. DAOLER® Friction Shims are manufactured to an ultra-high cleanliness standard:
1.Total cleanliness ≤ 0.3mg
2.Number of particles > 150μm: < 100 pieces
3.No particles > 600μm
This standard perfectly aligns with the clean-room assembly processes of modern engines, effectively preventing abrasive wear on precision mating surfaces, protecting the engine's core components, and extending the overall service life of the engine.
End-to-End Protection: Ready for Installation Upon Delivery
From factory to final assembly, DAOLER® Friction Shims are protected by professional handling and packaging measures, ensuring surfaces are free from nicks, dents, scratches, or any other defects. Each shim is delivered in perfect, ready-to-install condition, eliminating the need for any secondary processing by the customer – true "out-of-the-box" installation.
DAOLER® Friction Shims – With micron-level precision and dual-standard quality control, safeguarding every reliable and efficient power transmission.
For more product details or technical specifications, please contact us.
Based on a deep insight into this challenge, DAOLER® Friction Shims – with micron-level precision and strict quality control adhering to both automotive and aviation standards – provide unprecedented safety assurance and performance enhancement for rotary engine powertrains.
Dual-Standard Quality Control: Balancing Mass Production for Automotive with Compliance for Aviation
The design, manufacturing, and inspection processes of DAOLER® Friction Shims strictly follow a dual-dimension quality control system – combining automotive (civil) standards with aviation airworthiness standards. This approach not only ensures the stability of mass production but also allows the shims to meet the stringent compliance requirements of high-end aviation applications, such as light sport aircraft.
1.Design and Tolerances: Drawing generation, geometric tolerance specification, and general tolerance control strictly adhere to international standards such as ISO 128, ISO 1101, and ISO 2768. The resulting high dimensional accuracy and strong interchangeability allow seamless adaptation to various rotor engine models of the same specifications.
2.Environmental Compliance: Fully complies with the GB/T 30512-2014 standard for prohibited substances in automotive applications – non-toxic, environmentally friendly, and fully qualified for mass production of civil powertrain equipment.
3.Aviation Airworthiness: Deeply conforms to core aviation airworthiness standards including ASTM F2339-19a, CCAR-33-R2, and RTCA/DO-160G. Through multiple rounds of compliance validation, DAOLER® Friction Shims are proven stable for integration into aviation-grade rotary engine powertrains for light sport aircraft, meeting the stringent safety and reliability requirements of the aviation sector.
Industry-Leading Performance: Eliminating Micro-Slip for Zero-Loss Power Transmission
The superior performance of DAOLER® Friction Shims stems from the relentless pursuit of excellence in materials, processes, and surface engineering.
1.Surface Roughness strictly controlled to Rz < 12.5μm – The microscopic topography of the shim's mating surface is precision-machined to ensure uniform contact and controlled wear.
2.Static Friction Coefficient (μs) ≥ 0.45 – Significantly exceeding typical industry levels, this provides exceptional mechanical interlocking capability, completely eliminating micro-slip and loosening at bolted or mated interfaces under high-speed, high-torque conditions, achieving true zero-loss power transmission.
Ultra-High Cleanliness: Protecting Critical Engine Mating Surfaces
Engine assembly environments are extremely sensitive to particulate contamination. DAOLER® Friction Shims are manufactured to an ultra-high cleanliness standard:
1.Total cleanliness ≤ 0.3mg
2.Number of particles > 150μm: < 100 pieces
3.No particles > 600μm
This standard perfectly aligns with the clean-room assembly processes of modern engines, effectively preventing abrasive wear on precision mating surfaces, protecting the engine's core components, and extending the overall service life of the engine.
End-to-End Protection: Ready for Installation Upon Delivery
From factory to final assembly, DAOLER® Friction Shims are protected by professional handling and packaging measures, ensuring surfaces are free from nicks, dents, scratches, or any other defects. Each shim is delivered in perfect, ready-to-install condition, eliminating the need for any secondary processing by the customer – true "out-of-the-box" installation.
DAOLER® Friction Shims – With micron-level precision and dual-standard quality control, safeguarding every reliable and efficient power transmission.
For more product details or technical specifications, please contact us.
