[Hangzhou, China] – COMOTECH ASIA PACIFIC (CAP), a Sino-French OE specialist in professional wiper system engineering, is pleased to introduce its Window Cleaning Wiper Arm — a right-side wiper arm purpose-engineered for the expansive windscreens of medium and large passenger vehicles. Featuring an 800mm blade capacity, shaft plug connection, integrated washer nozzle, and calibrated 12N scraper pressure, this arm represents CAP's latest addition to its Pin Shaft wiper arm series, delivering the full-width sweeping performance that modern intercity coaches, city buses, and large passenger vehicles demand.
800mm Blade Capacity: Matched to Large Passenger Vehicle Windscreens The defining specification of this wiper arm is its 800mm blade capacity, engineered to drive the long bone-brush wiper blades required by medium and large passenger vehicle windscreens. On a vehicle of this class, every millimetre of blade reach matters: an undersized blade leaves critical un-wiped zones at the outer edges of the windscreen, directly impairing the driver's lateral visibility during lane changes and intersection turns. The 800mm configuration ensures that the blade sweeps the full usable width of the glass, maintaining the complete field of view that professional passenger transport safety standards require.
Shaft Plug Connection: The Heavy-Duty Interface Standard The arm connects to the blade through a shaft plug (pin) connection — the heavy-duty interface standard preferred in commercial vehicle wiper systems for its combination of secure engagement and simple, tool-free blade replacement. The precision-machined shaft plug eliminates the lateral play and rattle that looser connection types develop over time, maintaining accurate blade alignment across millions of wipe cycles. For fleet maintenance operations, the shaft plug interface also simplifies blade replacement procedures, reducing service time and the risk of incorrect installation that plagues other connection types.
Integrated Washer Nozzle: Clean, Clear, On Demand Mounted directly within the arm structure is an integrated washer nozzle, delivering cleaning fluid precisely to the blade contact zone. This integrated design serves two critical functions for passenger vehicle operation: it eliminates the external hose routing that can be damaged during vehicle washing or service, and it ensures that washer fluid reaches the exact point of blade-to-glass contact — maximizing cleaning efficiency with every spray cycle. For coaches and buses operating in rain, road spray, and seasonal salt environments, this precision fluid delivery is a direct contributor to sustained driver visibility.
12N Scraper Pressure: The Precision Balance for Long Blades The arm delivers a calibrated 12N scraper pressure — the precise force balance required for an 800mm blade operating on a large, gently curved passenger vehicle windscreen. Insufficient pressure allows the long blade to lift and skip at highway speeds, leaving water streaks across the driver's vision; excessive pressure accelerates rubber wear and adds unnecessary load to the wiper motor. The 12N specification maintains uniform blade-to-glass contact across the full 800mm length while optimizing blade and motor service life. Finished with a black plastic powder-coated surface for corrosion and UV resistance, and available with neutral packaging and a supply capacity of 50,000 units, the CAP Window Cleaning Wiper Arm is the professional-grade right-arm solution for passenger vehicle operators and distributors worldwide.