DAOLER® – Focused on the Development and Manufacture of High-Reliability Friction Shims

DAOLER® friction shims leverage gradient composite coatings and nanotechnology to enhance wear resistance, stability, and performance across a wide temperature range. They effectively address slippage and preload decay in high-vibration environments such as industrial robots, enabling efficient force transmission and reliable locking.

In precision transmission systems used in industrial manufacturing, friction shims serve as essential core components. Their performance directly determines transmission accuracy, operational stability, and service life. Though seemingly simple, these "silent guardians" effectively resolve industry pain points such as slippage, wear, and preload decay under vibration conditions, reinforcing safety in industrial robots, high-end equipment, and precision drives.

Technological Breakthrough: Redefining Performance Boundaries

DAOLER® has long focused on the field of friction shims, combining specialized R&D with rigorous manufacturing to meet high-reliability requirements. The core value of friction shims lies in achieving efficient force transmission, reliable locking, and wear resistance through precise friction coefficient control and interface optimization—requiring deep integration of materials science, surface engineering, and precision manufacturing.

Conventional friction shims often suffer from unstable friction coefficients, performance degradation at high temperatures, and insufficient wear resistance. These issues are particularly pronounced in high-vibration, high-load conditions such as industrial robot joints, harmonic reducers, and servo drives, leading to increased clearance, reduced positioning accuracy, and frequent maintenance.

Innovative Technology Framework

DAOLER® employs a gradient composite coating architecture. Through nanocomposite technology, nano-scale silicon nitride particles are directionally embedded into the substrate, forming diamond-like micro-scale hard phases. Combined with a copper-nickel alloy plastic transition layer, this creates a "rigid-flexible" structural advantage. This design delivers exceptional wear resistance while buffering thermal stress impacts and preventing delamination.

The proprietary electroplated diamond process ensures uniform distribution of micron-sized diamond particles on the friction surface. Laser micro-etching further constructs a controlled surface morphology, enhancing mechanical interlocking. As a result, the friction coefficient remains stable across a wide pressure range of 30–400 MPa, overcoming the fluctuations and slippage issues common in traditional shims.

Rigorous Material Standards

DAOLER® adheres to strict material selection criteria, choosing high-strength, high-wear-resistance, high-temperature-resistant composite substrates. Each batch of raw materials is carefully screened to eliminate impurities. Tailored formulations enable stable operation across a wide temperature range from -50°C to 480°C, with thermal stability more than five times that of organic-based materials. Under oil-lubricated conditions, friction performance degradation is less than 8%.

Precision Manufacturing Process

DAOLER® follows a philosophy of precision manufacturing and continuous improvement, utilizing high-accuracy production equipment and a full-process quality control system. From substrate cutting and coating application to final forming, every step adheres to strict process standards. Professional tools such as micrometers with an accuracy of at least 0.01 mm and constant-speed friction testers are used to tightly control dimensional tolerances and surface roughness.

The company produces ultra-thin shims starting from 0.1 mm in thickness, with tolerances controlled within ±0.02 mm. These shims can be quickly retrofitted without modifying existing equipment structures, making them ideal for compact joints and high-density integrated designs.

Broad Application Scenarios

As a brand dedicated to the R&D and manufacturing of high-reliability friction shims, DAOLER® serves multiple industries, including industrial robots, precision reducers, servo motors, new energy equipment, and high-end machine tools:

• Industrial robot joints: Effectively eliminate backlash, improve repeat positioning accuracy to within ±0.01 mm, and achieve wear life 3–5 times that of conventional materials.

• Harmonic reducers: Maintain preload retention exceeding 95%, suppress transmission slippage, and optimize torque transfer efficiency.

• New energy vehicle electric drive systems: Enable bolt size reduction and lightweight design while increasing torque transfer efficiency by 300%.

Future Directions

DAOLER® will continue to focus on the development and manufacturing of high-reliability friction shims, advancing tribology and precision manufacturing integration. The company aims to further optimize product performance and expand application scenarios. Additionally, DAOLER® is exploring the development of intelligent shims integrated with piezoelectric sensing elements to enable real-time connection status diagnostics, driving the evolution of friction shims from wear-resistant components to smart components.

Choosing high-reliability friction shims means choosing stable operation and long service life for your equipment. DAOLER® safeguards precision drives with expertise and empowers industrial upgrades with high reliability—delivering quality friction shims to support the high-quality development of advanced manufacturing.