Function, Specifications, Materials, and Key Parameters of
HD9049340094 Rear Brake Pad Assembly
1. Function
The HD9049340094 rear brake pad assembly is a critical safety
component in the vehicle's braking system. Its primary function is
to generate friction against the brake disc or drum to slow down or
stop the vehicle. The brake pads convert kinetic energy into
thermal energy through friction, ensuring reliable and efficient
braking performance.
2. Specifications
• Part Number: HD9049340094
• Brand: Compatible with Hande Axle or specific heavy-duty
commercial vehicle models (e.g., Shaanxi Automobile Delong series)
• Model: Designed for rear-wheel braking systems
• Type: Replacement brake pad assembly for commercial vehicles
• Configuration: Typically includes friction material, backing
plate, and anti-noise shims
3. Materials
• Friction Material: Made from semi-metallic, ceramic, or organic
compounds, depending on the specific design and performance
requirements. Semi-metallic pads offer high durability and heat
resistance, while ceramic pads provide lower noise and dust.
• Backing Plate: Constructed from high-strength steel to support
the friction material and ensure structural integrity
• Anti-Noise Shims: Made from rubber or other vibration-damping
materials to reduce brake noise and vibration
4. Key Parameters
• Friction Coefficient: Typically ranges from 0.34 to 0.42,
ensuring stable braking performance under various conditions (e.g.,
wet, high-temperature, or emergency braking scenarios)
• Thermal Stability: The friction material must withstand high
temperatures without significant degradation, typically designed to
operate effectively up to 600°C
• Wear Rate: The rate at which the friction material wears down
over time. High-quality pads offer lower wear rates and longer
service life
• Noise Level: Designed to operate quietly, with noise levels
typically below 65 decibels (dB) during normal braking
• Compatibility: Designed to be compatible with specific brake disc
or drum sizes and vehicle models (e.g., compatible with Hande Axle
or Shaanxi Automobile Delong series trucks)
• Dimensions: The size and shape of the brake pad must match the
vehicle's brake caliper and disc/drum specifications (specific
dimensions not provided, but typically tailored to the vehicle's
design)
• Weight: The weight of the brake pad assembly may vary based on
materials and design, but it is typically lightweight for ease of
installation and reduced unsprung mass
• Operating Temperature Range: Designed to operate effectively in
various environmental conditions (typically designed to operate
between -40°C and +120°C)
