When selecting forklift brakes, you must prioritize compatibility and material integrity. Key specs include the friction coefficient (typically 0.35-0.45) for optimal stopping power, heat dissipation capacity to prevent brake fade during high-frequency operations, and dimensional accuracy (tolerance within ±0.1mm) to ensure a perfect fit with the wheel hub. For electric forklifts, ensure the electromagnetic brake coils meet the specific voltage requirements (e.g., 24V, 48V, or 80V) to avoid electrical failure.