[Hangzhou, China] – COMOTECH ASIA PACIFIC (CAP), a Sino-French OE specialist in professional wiper system components, is pleased to introduce its Self-Lubricating Bushing for Wiper Assemblies (Model: CAP1045929B). Engineered with a three-layer composite structure — low carbon steel backing, sintered porous bronze, and PTFE composite polymer lining — this bushing brings the proven technology of industrial self-lubricating bearings to the wiper assembly, delivering low friction, exceptional wear resistance, and a dramatically extended service life for the pivot joints that keep wiper systems operating smoothly.
Three-Layer Composite Architecture: The Self-Lubricating Engineering Standard The CAP1045929B is constructed using the same three-layer composite architecture trusted across industrial bearing applications worldwide: a low carbon steel backing provides the structural strength and dimensional stability to maintain precise pivot clearances under load; a sintered porous bronze layer bonded to the steel backing acts as a reservoir structure; and the bronze's porosity is impregnated with a PTFE composite polymer, which serves as the self-lubricating bearing surface. This architecture delivers a critical operational advantage: the bushing requires no external lubrication and no maintenance — the PTFE composite continuously provides its own low-friction bearing surface throughout the component's service life.
Self-Lubricating Performance: Low Friction, Superior Wear Resistance, Long Life Because the PTFE composite lining is inherently self-lubricating, the CAP1045929B maintains low friction coefficients across its entire operational life — without the periodic re-lubrication that conventional bushing designs require. The combination of the low-friction surface and the bronze layer's load-bearing capability produces excellent wear resistance, which in turn delivers a long operational life for both the bushing and its mating pivot components. In wiper assembly applications, this means the linkage pivot joints retain their factory-spec clearance and smooth operation for significantly longer periods, reducing the frequency of the bushing replacement service jobs that are a staple of automotive maintenance.
Engineered to Manage Bearing Load, Speed, and Temperature The CAP1045929B is specifically engineered to manage bearing load, speed, and temperature under the environmental conditions encountered in wiper assembly applications. Wiper linkage pivot joints must operate reliably across wide temperature ranges — from freezing winter conditions that stiffen materials, to high-heat summer operation — while sustaining the cyclic loads of continuous wiper operation and the vibration environment of the vehicle. The composite structure is designed to maintain its load-bearing and low-friction characteristics across this full operating envelope, providing consistent pivot performance in every climate and driving condition.
Three Configurations: Cylindrical, Flanged, and Thrust The CAP1045929B is available in three standard configurations to cover the full range of wiper assembly pivot requirements: cylindrical bushings for standard pivot joint applications, flanged bushings for applications requiring axial location and additional load surface, and thrust washers for axial thrust load management. This configuration flexibility allows wiper system designers and aftermarket suppliers to standardize on a single self-lubricating material technology across all their bushing applications. Manufactured at CAP's Hangzhou facility under ISO9001 certification with a supply capacity of 500,000 units, FOB Ningbo/Shanghai terms, and a minimum order of just 50 pieces, the CAP1045929B provides distributors and OEM integrators with a reliable, high-performance supply source for the pivot components that protect the wiper system — the driver's first line of defense against accidents.