Section,Item,Vendor 1,Vendor 2,Vendor 3,Buyer Check,Red Flag
Basic Requirement,Motion covered,,,,Hoist / CT / LT / auxiliary motion,Brake location not clearly stated
Basic Requirement,Crane capacity and duty,,,,Confirm brake selection matches crane duty and motion,Same brake offered for all duties
Basic Requirement,Motor power and speed,,,,Required for torque and stopping behavior checks,Motor data missing
Brake Selection,Brake type,,,,Thruster shoe / DC disc / AC disc / hydraulic / fail-safe electromagnetic,Only generic brake mentioned
Brake Selection,Normally closed fail-safe design,,,,Brake should apply when power fails for hoisting and safety-critical motions,Brake requires power to apply
Brake Selection,Brake torque rating,,,,Compare against required torque with margin,Torque value not declared
Brake Selection,Torque margin / service factor,,,,Ask vendor to state selection margin,No margin or calculation basis
Brake Selection,Drum / disc diameter,,,,Must match brake design and heat dissipation,Brake wheel size not declared
Brake Selection,Duty / starts per hour,,,,Check suitability for frequent operation,Light-duty brake on high-cycle crane
Brake Selection,Thermal capacity,,,,Important for repeated starts/stops and inching,No heating or duty confirmation
Brake Make,Brake make and model,,,,Record exact brand and model,Unknown local make with no datasheet
Brake Make,Thruster / actuator make,,,,Important wear and failure part,Thruster make not declared
Brake Make,Lining / pad material,,,,Check asbestos-free and application suitability,Lining material not stated
Brake Make,Spring and linkage quality,,,,Affects adjustment stability and fail-safe behavior,No adjustment procedure
Controls,Brake release method,,,,Confirm electrical / hydraulic / thruster release,Release voltage not specified
Controls,Rectifier / brake coil supply,,,,Confirm voltage and protection,Coil supply assumed from panel without details
Controls,Brake monitoring provision,,,,Limit switch / brake release feedback if required,No feedback for critical application
Safety,Manual release arrangement,,,,Needed for maintenance and emergency lowering policy,No safe release procedure
Safety,Overload and emergency stop interface,,,,Brake must coordinate with controls and safety devices,Emergency stop logic unclear
Maintenance,Adjustment access,,,,Technician should access brake safely,Brake placed where adjustment is difficult
Maintenance,Wear indication,,,,Useful for planned maintenance,No wear mark or inspection method
Maintenance,Spare lining / pads,,,,Ask for recommended spares and availability,No spare support
Maintenance,Replacement lead time,,,,Check local availability,Imported brake with unknown lead time
Testing,FAT checks,,,,Brake operation release response noise and heating,No FAT brake checks
Testing,SAT checks,,,,Hold test stopping behavior emergency stop trial and inspection,No site brake acceptance criteria
Documentation,Torque calculation,,,,Ask for required vs selected brake torque,Only catalog page submitted
Documentation,Datasheet and manual,,,,Need make model setting and maintenance instructions,No manual or datasheet
Commercial,Warranty and exclusions,,,,Check wear parts and actuator warranty,Linings excluded without clarity