Black 4 Inch Stem Caster PP M12*30 Stem Swivel Casters Customized
4 Inch Black Color High Quality PP M12*30 Double Ball Bearings Swivel Caster - Easy Assembling For Equipment
Features and Functional Purpose
This caster is a premium medium-duty swivel caster built for equipment that requires high maneuverability without a locking mechanism. The "double ball bearings" dramatically reduce rolling and swiveling friction, making heavy loads feel light. Its "easy assembling" design allows for rapid installation. The primary purpose is to provide a smooth, low-effort, and highly responsive mobility solution for frequently moved equipment in clean, dry, or chemically exposed environments.
| Category | Specification / Feature | Functional Purpose |
|---|---|---|
| General Specs | Wheel Diameter: 4 inches (approx. 100mm) | Larger than 3" casters, it rolls easily over floor joints, small debris, and thresholds, significantly reducing the push/pull force required. |
| Wheel Width: Approx. 1.26 inches (32mm) | A wider tread provides greater stability and load distribution, preventing the wheel from digging into soft or uneven floors. | |
| Load Capacity: Approx. 80–120 kg per caster (depending on model) | Designed for medium-duty applications. Four casters can easily support total loads of 320–480 kg. | |
| Caster Type: Swivel (360°) | The fork rotates a full 360°, allowing equipment to change direction instantly, turn in tight spaces, and be steered with precision. | |
| Material | Wheel Material: Polypropylene (PP), Black | A high-strength, impact-resistant thermoplastic. It is lightweight, durable, and offers a professional appearance. |
| Wheel Color: Black | Hides dirt and scuffs in heavy-use environments while maintaining a clean, industrial look. | |
| Bracket Material: Steel with Zinc Plating | Provides a strong, corrosion-resistant housing. Zinc plating offers effective protection against rust in normal environments. | |
| Bearings | Bearing Type: Double Ball Bearings | Swivel Raceway: A double row of ball bearings is installed in the kingpin raceway, distributing the load more evenly than a single ball race. This provides superior swivel performance under heavy loads and reduces "swivel wobble." Wheel Hub: A second set of ball bearings allows the wheel to spin with minimal friction. The combination results in effortless rolling and steering even under load. |
| Mounting | Stem Type: M12 × 30 mm (Threaded) | Metric threaded stem (12mm diameter, 30mm length). Enables easy installation into pre-threaded equipment legs, nuts, or inserts. |
| Easy Assembling: Pre-assembled stem with lock nut | The caster comes ready to install. The included lock nut allows secure fastening without complex hardware or tools. | |
| Environmental | Chemical Resistance: Excellent | PP is highly resistant to moisture, acids, alkalis, oils, and many solvents – ideal for food prep, labs, and factories. |
| Floor Protection: Non-marking | The black PP tread is non-marking, safe for most floors including sealed concrete, epoxy, and tile. |
Summary of Functional Benefits
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Effortless Maneuverability: The combination of the 4" diameter and double ball bearingsdramatically reduces rolling and swiveling resistance. Equipment moves and turns smoothly even under heavy loads, significantly reducing operator fatigue.
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Superior Load Distribution & Stability: The double ball bearings in the swivel raceway distribute the load more evenly than a single ball race. This provides superior swivel performance under heavy loads and ensures the caster turns smoothly even when fully loaded, making equipment easier to maneuver in tight spaces.
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Quick & Tool-Free Installation: The M12×30 threaded stem and included lock nut allow for fast, easy assembly. Simply screw the stem into a pre-threaded hole or through a mounting plate and secure with the nut. No special tools or caster plates are required.
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Durable & Low Maintenance: The high-impact PP wheel and sealed double ball bearings provide a robust, long-lasting caster. The bearings are shielded to keep out dirt and debris, reducing the need for lubrication.
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Versatile & Professional Appearance: The black color blends well with industrial equipment, lab carts, and black-framed furniture. The non-marking tread protects floors while maintaining a clean, professional look.
Ideal Applications
This caster is best suited for mobile equipment that needs to be moved frequently and maneuvered easily in tight spaces – especially in environments where chemicals, moisture, or hygiene are concerns.
| Application Area | Specific Use Examples |
|---|---|
| Industrial & Manufacturing | – Mobile workbenches and tool carts - Assembly line equipment - Machine stands and portable conveyors |
| Food Service & Catering | – Stainless steel prep tables and kitchen islands - Ingredient bins and bulk food storage racks - Mobile dish tables |
| Laboratory & Medical | – Lab equipment stands (e.g., microscopes, centrifuges) - Medical instrument carts - Chemical storage trolleys (PP resists spills) |
| Commercial & Retail | – Point-of-sale (POS) stands and kiosks - Mobile shelving units and display racks - Vending machines and service carts |
| Workshop & Garage | – Tool chests and rolling cabinets - Dust collectors and small machinery - Tire changing stands and jacks |
Get in Touch
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