Home > Stem Caster >

Black 4 Inch Stem Caster PP M12*30 Stem Swivel Casters Customized

Product Categories

Zhongshan Zhensheng Hardware Co., Ltd

Trust Seal

Verified Supplier

Credit Check

Supplier Assessment

Contact Now

Black 4 Inch Stem Caster PP M12*30 Stem Swivel Casters Customized

Model Number : ZS100BLPPM1230S01

Certification : ISO 9001/ CE

Place of Origin : China (Mainland)

MOQ : 1000 PCS

Price : RMB 0.5-10/piece

Payment Terms : ,L/C,D/P,T/T

Delivery Time : 5-7 days

Wheel diameter : 100mm

Wheel width : 32mm

Total height : 130mm

Screw size : M12*30

Material : PP

Bearing type : Double ball bearings

Color : Black

OEM available : Yes

Package : Export carton is covered with a woven bag outside

FOB port : Guangzhou/ Shenzhen

Features : Black Wheel, PP Wheel, Furniture Wheel, Trolley Caster Wheel, Medium Duty Wheel, Equipment Wheel

Contact Now

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

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.
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.
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.
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.
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

Product Tags: