6 Inch Heavy Duty Swivel Caster Aluminum Core PU Wheel Spring Shock-Absorbing

6 Inch Heavy Duty Swivel Caster – Aluminum Core PU Wheel, Spring Shock-Absorbing Plate, 600kg Load Capacity

(Meta Description idea: Looking for durable heavy duty caster wheels? This 6-inch industrial swivel caster features a shock-absorbing spring plate, aluminum-core PU wheel, and 600kg capacity. Ideal for factory carts, automotive lines & flight cases. Factory direct pricing.)

Product Specifications (Bullet Points)

• Wheel Diameter: 6 inches (150 mm)

• Wheel Width: 50 mm

• Overall Height: 222 mm

• Load Capacity: 600 kg (per caster)

• Wheel Material: Polyurethane (PU) Tread with Aluminum Core

• Mounting Type: Swivel (Activity / Rotating)

• Suspension: Galvanized Steel Spring Plate & Base (Shock-Absorbing)

• Bracket / Top Plate Thickness: 5.5 mm

• Top Plate Size: 138 × 110 mm

• Bolt Hole Spacing: 105 × 80 mm

• Bolt Hole Diameter: 13 mm

• Finish: Galvanized / Zinc-Plated Steel (Rust-resistant)

Key Features & Product Advantages

1. Superior Shock Absorption & Vibration Damping​

   The built-in galvanized steel spring plate​ acts as a suspension system, absorbing impacts from uneven floors and protecting both the equipment and the load. This makes it a top choice for shock absorbing casters​ and vibration-sensitive applications.

2. High-Load Aluminum Core PU Wheel​

   The polyurethane tread bonded to an aluminum core​ offers the perfect balance of strength and floor protection. PU wheels are known for being non-marking, resistant to wear/tear, and providing lower rolling resistance than rubber—making manual pushing much easier.

3. Heavy Duty 600kg Capacity​

   With a robust 5mm thick bracket and sturdy construction, this heavy duty industrial caster​ handles serious weight without deforming, ideal for industrial equipment, heavy trolleys, and warehouse carts.

4. Corrosion-Resistant Galvanized Finish​

   The zinc-plated / galvanized steel base and spring plate prevent rust and withstand oily or mildly humid workshop environments better than standard painted brackets.

5. Smooth 360° Swivel Mobility​

   The swivel design allows for effortless maneuverability in tight spaces, improving workflow efficiency on assembly lines​ and in manufacturing facilities.

Recommended Applications (Where to Use)

Thanks to its shock-absorbing spring and durable PU wheel, this caster is perfect for:

• Automotive & Packaging Production Lines: Moving heavy chassis, parts bins, or packaged goods smoothly across factory floors.

• Warehouses & Distribution Centers: Ideal for heavy duty carts, platform trucks, and storage racks​ that require easy mobility and floor protection.

• Flight / Aircraft Cases & Industrial Cabinets: The vibration-damping spring protects sensitive instruments during transport.

• Workshop Equipment & Tool Trolleys: Great for moving welding machines, press brakes, or heavy tool chests.

• Logistics & Material Handling: Dollies and freight terminals where quiet operation and non-marking wheels matter.

Not Recommended For / Limitations (Where NOT to Use)

To ensure longevity and safety, avoid using this caster in the following scenarios:

• Extreme High-Temperature Environments: Standard PU wheels typically perform best below ~80°C (+176°F). For ovens, kilns, or foundry settings, phenolic or steel wheels are safer.

• Outdoor Rough Terrain / Gravel: While the spring helps with minor bumps, PU wheels are not designed for deep mud, gravel, grass, or sharply uneven outdoor surfaces; pneumatic wheels would be better.

• Prolonged Direct Sunlight / UV Exposure: Unless UV-stabilized PU is specified, long-term outdoor all-weather use may cause material degradation.

• Extremely Slick / Icy Surfaces: PU offers less traction than soft rubber on wet or icy floors.

• Speeds Exceeding 4–6 km/h: Industrial casters are built for controlled manual or slow towed movement; high-speed towing can damage the bearings and spring mechanism.

SEO / Google Keyword Integration 

When writing the long-form description on your site, naturally include these high-intent search terms:

"Looking for reliable heavy duty caster wheels​ for your warehouse or production line? Our 6-inch industrial swivel caster​ combines a polyurethane wheel​ with an aluminum core​ and a spring-loaded shock absorbing​ mechanism. As a factory direct caster manufacturer, we supply high load capacity casters​ that protect epoxy floors​ while moving heavy equipment​ smoothly. Whether you need non-marking PU casters​ for automotive assembly​ or flight case wheels​ for logistics, this galvanized steel caster​ delivers durability and quiet performance."

High-traffic keywords used: heavy duty caster wheels, industrial swivel caster, polyurethane wheel, aluminum core, spring-loaded shock absorbing, factory direct caster manufacturer, high load capacity casters, non-marking PU casters, galvanized steel caster