4 Inch Gray TPR Swivel Caster Wheel With Single Ball bearing For Equipment

Feature

This caster is a versatile, medium-duty mobility solution designed to offer a balance of smooth rolling, floor protection, and quiet operation. Its key physical and mechanical features include:

• 4-Inch Diameter & Gray TPR Wheel: The wheel measures 4 inches (approximately 100mm) in diameter . It is made from gray Thermoplastic Rubber (TPR) , a material that combines the durability of plastic with the softness of rubber. The tread is typically gray and non-marking, bonded to a rigid polypropylene (PP) or polyolefin hub . TPR is known for its quiet rolling and good load-carrying ability .
• Single Ball Bearing: The wheel hub contains a single ball bearing . This precision bearing type is designed for smooth, low-friction rotation, requiring less effort to start and maintain motion compared to plain bearings .
• Swivel Function (360°): The caster features a full swivel bracket, typically made of pressed carbon steel with a zinc-plated finish for corrosion resistance . The swivel head incorporates a ball bearing raceway (often double-sealed) for smooth directional changes and increased service life .
• Load Capacity: A 4-inch TPR caster with a single ball bearing typically supports medium-duty loads. Based on industry standards, load capacities commonly range from 70 kg to 125 kg(approximately 150 lbs to 275 lbs) per caster, depending on the specific bracket and wheel width .
• Wheel Hardness: The TPR tread typically has a hardness of around 85 Shore A , providing a good balance of cushioning and durability .

Functions

The primary functions of this caster are centered on providing efficient, quiet, and protective mobility for equipment:

Ideal Applications

Given its combination of smooth-rolling single ball bearing, quiet and floor-protective TPR wheel, and corrosion-resistant frame, this caster is ideally suited for a wide range of environments where noise control and floor care are priorities.

• Medical and Healthcare Facilities:
  • Medical Carts and Equipment Stands: For IV poles, monitor stands, and procedure carts that need to be moved silently and smoothly next to patients .
  • Hospital Beds and Stretchers: The quiet, non-marking wheels are essential for patient comfort and for protecting hospital flooring .
  • Supply Carts: For transporting medical supplies and linens quietly through hallways.
• Commercial and Institutional Settings:
  • Library Carts and Book Trucks: The soft TPR wheels ensure near-silent operation in quiet reading rooms while protecting wood or tile floors .
  • Hotel Housekeeping Carts: For quiet movement through hallways and guest rooms, protecting carpets and hard floors.
  • Office Furniture and AV Stands: For mobile filing cabinets, printer stands, and audio-visual equipment carts where quiet movement is valued.
  • Retail Display Fixtures: For movable shelving and display racks that need to be repositioned quietly without damaging floor surfaces.
• Light Industrial and Workshop Applications:
  • Tool Stands and Service Carts: For mechanics and technicians who need to move tools to a job site quietly, especially in finished or occupied spaces .
  • Workbenches and Assembly Stations: For mobile workstations in workshops where noise reduction is beneficial.
  • Electronic Equipment Racks: For moving sensitive electronic equipment where vibration dampening is important.
• Food Service and Clean Environments:
  • Food Service Carts: For use in restaurants and catering, where the chemical resistance of TPR is beneficial .
  • Clean Room Applications: In drug manufacturing and aerospace, where non-marking and clean operation are required .