1. General Introduction & Design Standard
The YW-K series is a normally-open electro-hydraulic drum brake, specially designed for deceleration and stopping control of crane travelling mechanisms, winches, and general material handling equipment. Different from normally-closed brakes, it keeps the brake released under power-off status and performs braking when powered on, which perfectly matches the working logic of running mechanism speed regulation and intermittent braking scenarios.
This series fully complies with JB/T 6406-2006 industrial mechanical standards and DIN 15435 international braking torque standards, matched with ED series electro-hydraulic thrusters conforming to DIN 15430 specifications, featuring stable performance, sensitive response and long service life.
2. General Working Conditions
Working Altitude: ≤2000m
Ambient Temperature: -20℃ ~ +40℃
Relative Humidity: ≤90% (non-condensing)
Working Duty: Continuous S1 duty & intermittent S3-60% duty
Power Supply: 3-phase AC 380V/50Hz (custom 415V/60Hz available)
Protection Grade: IP54 (dust-proof and splash-proof)
Applicable Scenarios: Bridge/gantry crane travelling mechanisms, industrial winches, belt conveyors, port and mining handling machinery
3. Core Structural Features
Normally-open Design: Power-off release, power-on braking, suitable for running mechanism deceleration control
Equal Gap Interlock Device: Automatically balances brake shoe clearance, no manual frequent adjustment, avoids friction deviation
Self-lubricating Hinge Bearings: High transmission efficiency, no regular lubrication required, low maintenance cost
Scale-equipped Spring Structure: Real-time braking torque display, convenient and accurate torque adjustment
Quick-replace Brake Lining: Snap-on integral non-asbestos lining, available in soft/hard types for different working loads
