Great Wall Floating Steel Hat Brake Discs

Brake Discs Features

1. OE-Matched for Great Wall Rugged Models: Directly fits Tank 300/500, Haval H9, and off-road variants of Great Wall Poer; ensures perfect alignment with factory calipers and axles.

2. Floating Design: Friction ring loosely connects to the steel hat, allowing movement to reduce thermal stress and warping during intense braking.

3. Off-Road Optimized: Enhanced heat dissipation and vibration reduction, ideal for off-road trails, downhill descents, and aggressive driving.

4. Global Safety Compliance: Meets ECE R90 and IATF 16949 standards, passing tests for structural integrity and braking consistency under thermal stress.

5. System Compatibility: Works seamlessly with Great Wall’s ABS, ESC, and off-road braking modes, ensuring controlled stopping in rugged conditions.

Brake Discs Benefits

1. Reduced Thermal Warping: Floating design accommodates heat expansion, maintaining flatness and consistent braking during prolonged heavy use.

2. Enhanced Off-Road Stability: Minimizes vibration and brake fade, critical for navigating rocky terrain or steep downhill paths.

3. Durable Construction: Steel hat resists corrosion and impacts from off-road debris, extending service life in tough environments.

4. Reliable Performance: Ensures consistent stopping power whether driving on highways, muddy trails, or gravel roads.

5. Safety & Compliance: ECE R90 certification guarantees adherence to global standards, supporting roadworthiness for both on-road and off-road use.

Overview

This product is a floating two‑piece brake disc engineered specifically for Great Wall vehicles—including SUVs, pickup trucks, and off‑road models. The disc features a steel hat (centre mounting hub) combined with a separate friction ring through a floating connection system that allows limited radial and axial movement between the two components. This floating design addresses the thermal expansion challenges inherent in heavy‑duty braking applications, reducing the risk of disc warping, vibration, and judder. The steel hat provides robust corrosion resistance and a durable mounting interface, while the ventilated friction ring delivers effective heat dissipation. Available with multiple protective finishes and optional drilling or slotting, this disc is designed for Great Wall owners who demand durability, reliability, and consistent braking performance under demanding conditions.

Floating vs. Fixed – Understanding the Structural Difference

Fixed (One‑Piece) Discs

• The friction ring and mounting hat are cast as a single piece of iron.

• Simple construction, lower manufacturing cost.

• Under high heat, the entire disc expands uniformly.

• However, differential expansion between the outer friction ring and the inner hat can cause distortion.

• This distortion can lead to run‑out, pedal pulsation, and uneven pad wear.

Floating (Two‑Piece) Discs

• The friction ring and steel hat are manufactured as separate components.

• They are connected through a floating mechanism—typically using bobbins, pins, or a spline system.

• This allows the friction ring to expand radially and (in some designs) slightly axially independently of the hat.

• The hat remains dimensionally stable, while the ring expands freely with heat.

• Result: Reduced distortion, minimised run‑out, and consistent pedal feel even under high temperatures.

Why This Matters for Great Wall Vehicles

• Great Wall SUVs and pickups are often used for heavy‑duty applications—towing, off‑road driving, loaded cargo.

• These applications generate significant brake heat, particularly on long descents or in stop‑and‑go off‑road conditions.

• A floating disc manages this heat more effectively than a fixed disc, maintaining braking stability when it matters most.

The Thermal Expansion Challenge – Why Floating Discs Were Developed

Heat Generation in Braking

• Braking converts kinetic energy into thermal energy—heat.

• Under heavy braking, disc surface temperatures can rise significantly.

• The outer friction ring expands more than the inner hat because it experiences higher temperatures.

The Problem with Uneven Expansion

• If the ring and hat are rigidly connected, the ring's greater expansion creates stress in the casting.

• This stress can cause the disc to warp, creating a "wobble" as it rotates.

• The wobble pushes the brake pads back into the caliper, resulting in a low pedal or pulsation.

How Floating Design Solves This

• The floating mechanism allows the ring to expand without pulling on the hat.

• The hat remains stable, maintaining its concentric relationship with the wheel hub.

• The disc stays true to the hub even at high temperatures.

• Result: Consistent pad‑to‑disc clearance, no pedal pulsation, and reduced stress on the caliper.

Steel Hat – The Advantages of a Separate Mounting Hub

Corrosion Resistance

• The steel hat is manufactured from a corrosion‑resistant material, typically coated or painted for additional protection.

• Unlike cast iron, which is prone to rust, the steel hat maintains a clean mounting surface.

• This reduces the likelihood of the disc seizing to the hub—a common frustration during brake servicing.

Dimensional Stability

• The steel hat does not expand as much as the cast‑iron friction ring under heat.

• Its stable dimensions ensure that the wheel mounting surface remains true.

• Wheel run‑out is minimised, reducing the risk of vibration.

Durability in Harsh Environments

• For Great Wall vehicles used off‑road or in coastal areas, corrosion is a genuine concern.

• The steel hat provides a durable, long‑lasting mounting interface.

• The separate hat also allows for future serviceability—if the friction ring is worn, the hat remains usable.

How the Floating Steel Hat Combination Works Together

• The steel hat attaches to the wheel hub using the vehicle's original lug bolts or studs.

• The ventilated friction ring sits over the hat, connected through a floating coupling.

• The coupling allows radial movement while maintaining concentricity.

• The ventilated ring provides effective heat dissipation through internal cooling vanes.

• The steel hat remains cool relative to the ring, maintaining a stable mounting interface.

• Together, they provide braking performance that is durable, consistent, and resistant to fade.

Performance Design Options

Ventilated Construction (Standard)

• Internal cooling vanes between the two friction faces promote airflow.

• Effective heat dissipation for heavy‑duty applications.

• Essential for Great Wall vehicles used for towing, off‑road driving, or loaded cargo.

Drilled Configuration

• Holes across the friction surface provide additional cooling.

• Water evacuation improves wet‑weather braking.

• Reduces gas build‑up between pad and disc.

• Provides a sporty, performance appearance.

Slotted Configuration

• Grooves clean the pad surface, removing dust and debris.

• Prevents pad glazing, maintaining consistent friction.

• Improves initial bite for more responsive braking.

Drilled + Slotted Combination

• Combines cooling, cleaning, and bite for maximum performance.

• Recommended for Great Wall owners who use their vehicles in varied and demanding conditions.

Surface Protection Options

Oiled

• Light rust‑preventive oil film applied during production for protection during storage and transit.

• Easily cleaned before installation with brake cleaner or a suitable solvent.

Painted

• Durable paint applied to the hat and outer edges, providing long‑term corrosion resistance.

• Particularly suitable for the steel hat portion, which remains visible even after installation.

• Recommended for regions with high humidity, coastal environments, or winter road salt exposure.

Coated

• Advanced anti‑corrosion coating (zinc or geometric) offering superior long‑term protection.

• The coating gradually wears from the friction area during normal braking while the rest of the disc remains permanently shielded.

• The highest level of corrosion protection for demanding off‑road and harsh environments.

Hub Brake Disc Integration

• The hub brake disc configuration means the disc and hub are supplied as a single, pre‑assembled unit where applicable.

• This design simplifies installation—the disc is already mounted on the hub, with correct bearing preload and concentricity set at the factory.

• For workshops, this reduces installation time and eliminates the risk of incorrect assembly.

• For Great Wall owners, it ensures that the floating disc assembly is correctly matched and pre‑set.

Who Is This Product For?

Great Wall SUV Owners

• For drivers of Haval, Tank, and other Great Wall SUVs who use their vehicles for mixed driving—daily commuting, family trips, and occasional off‑road.

• The floating design provides braking consistency across varied driving conditions.

Great Wall Pickup Owners

• For drivers of Great Wall pickups—whether for work, recreation, or both.

• The floating disc handles the additional heat generated by load‑carrying and towing.

• The steel hat resists corrosion from mud, water, and road debris encountered during off‑road use.

Off‑Road and Overland Enthusiasts

• For Great Wall owners who take their vehicles off‑road—on gravel, mud, sand, or rocky terrain.

• The floating design maintains braking performance even when the disc is subjected to mud and water followed by high‑heat braking.

• The corrosion‑resistant steel hat survives the harsh conditions that standard cast‑iron discs may not tolerate.

Workshops Serving Great Wall Vehicles

• For service centres that regularly work on Great Wall models.

• The floating steel hat design offers a premium replacement option to recommend to customers.

• The hub‑integrated assembly simplifies installation and ensures correct fitment.

Fleet Operators

• For businesses operating Great Wall vehicles for work purposes—construction, agriculture, logistics.

• The floating design and steel hat provide the durability needed for heavy‑duty fleet use.

• Reduced maintenance frequency lowers total operating costs.

Quality Assurance and Manufacturing Standards

• Manufactured to Great Wall OEM specifications for fitment and compatibility.

• Floating mechanism engineered for smooth, consistent operation.

• Steel hat manufactured to corrosion‑resistant specifications.

• Dimensional accuracy verified—run‑out and concentricity controlled to tight tolerances.

• Ventilation vane structure checked for casting integrity.

• Surface finish controlled for proper pad bedding and consistent friction.

• Corrosion resistance of surface finishes validated through standardised testing.

Fitment and Compatibility

• Specifically designed for Great Wall vehicles—Haval series, Tank series, and Great Wall pickups.

• Suitable for front and rear axle applications—consult catalogue for specific fitment.

• Floating steel hat design with ventilated friction ring.

• Available in various sizes to cover different Great Wall platforms.

• Direct replacement—no modifications required.

• Consult the product catalogue or contact Winhere with vehicle details (model, year, axle position) for specific fitment confirmation.

• 100% critical dimensions, runout and DTV inspection 

• Material physical and chemical inspection

• Test shear strength, compressibility, density, flatness and parallelism 

• Test performance and noise/NVH