Black Swivel Caster Threaded Stem Caster Wheel 60mm 2.5 Inches Swivel PU Rubber Caster Office Chair
This product is a black swivel caster for an office chair, primarily made of black plastic and metal components. The wheel is circular with an anti-slip textured surface and has a diameter of approximately 68 mm. Atop it is a silver metal stem used for installation on the chair base, with a stem height of 11 mm. The overall structure is compact, designed to enable smooth movement of the chair.
This wheel is a swivel caster for office chairs, mainly used on the base of computer chairs, swivel chairs, executive chairs, and other office furniture to allow smooth movement and turning of the chair. It is suitable for use on flat indoor surfaces such as offices and home study rooms. The common silent design helps maintain a quiet environment, and some models may include a brake function to secure the chair in place.
| Dimension | Value (mm) |
|---|---|
| Diameter of the wheel | 68 |
| Width of the wheel | 54 |
| Height of the stem | 21 |
| Diameter of the stem | 11 |
| Width of the wheel base | 60 |
- Material: Black PU (Polyurethane) or Rubber wheel with Chrome-plated metal fork.
- Mounting: Grip Ring Stem (implied by the groov
- Type: Dual-wheel design (Twin caster) for stability and floor protection
- Mounting: Grip Ring Stem (implied by the grooves on the pin, common for office chairs)
| Packaging & Weight | |
|---|---|
| Carton Quantity | 200 PCS |
| Gross Weight | 25 KGS |
| Carton Dimensions | 60*31*28 cm |
| Load Capacity | 40 KG |
Choosing the right caster is crucial for furniture mobility, floor protection, and longevity. This guide compares caster sizes, materials, and installation methods to help you select the perfect fit for your office chair, sofa, cabinet, or industrial cart.Size directly influences stability and weight support. Below is a general reference for common caster sizes:
| Wheel Diameter (mm/inch) | Typical Load Capacity per Caster | Ideal Applications |
|---|---|---|
| 40-50mm (1.5"-2") | 20-40 kg | Office chairs, light-duty stools, small cabinets, residential furniture |
| 60-75mm (2.5"-3") | 40-80 kg | Standard office chairs, medium-duty carts, bookshelves, workbenches |
| 80-100mm (3"-4") | 80-120+ kg | Heavy-duty furniture, industrial carts, large cabinets, hospital beds |
The wheel material determines noise levels, floor friendliness, and durability.
| Material | Pros | Cons | Best For |
|---|---|---|---|
| PVC | Low cost, lightweight, easy to clean, water-resistant | Can harden over time, may leave marks on some floors | Budget-friendly chairs, light industrial use, environments requiring frequent cleaning |
| PU (Polyurethane) | Excellent wear resistance, high load capacity, floor-friendly (non-marking), pushes easily | Higher cost, less cushioning than rubber | High-traffic areas: warehouses, hospitals, offices, heavy-duty equipment |
| Rubber (Natural/Synthetic) | Superior shock absorption, very quiet, good grip | Wears faster than PU, can leave black marks, not oil-resistant | Quiet environments: libraries, homes, hospitals; transporting delicate instruments |
| PP (Polypropylene) | Very economical, chemical-resistant | Hard, noisy, poor shock absorption, can crack in cold weather | Light-duty, low-cost applications where noise and comfort are not priorities |
The installation type affects stability and ease of attachment.
| Method | Pros | Cons | Best For |
|---|---|---|---|
| Threaded Stem | Easy DIY installation, allows for height adjustment, clean look | Less stable under heavy side loads, requires a threaded socket | Office chairs, stools, and furniture with pre-tapped holes |
| Plate Base (Top Plate) | Extremely stable, distributes weight evenly, handles heavy loads and side forces | Requires drilling for bolt installation, more complex setup | Bookshelves, cabinets, workbenches, and any heavy furniture |
| Expanding Adapter | Fits into unthreaded holes, versatile | Can be less secure than other methods if not properly installed | Converting non-threaded holes into a caster mount |
Protecting your flooring is as important as moving your furniture.
| Floor Type | Recommended Caster |
|---|---|
| Hardwood & Laminate | PU Wheels or soft Rubber Wheels to prevent scratches and marks |
| Tile & Vinyl | PU Wheels or TPE/Rubber Wheels for a smooth, quiet roll |
| Carpet | Larger diameter wheels (3"+) for easier rolling over carpet fibers |
| Industrial Concrete | PU Wheels or Nylon Wheels for maximum durability and resistance to abrasion |
According to public information, a standard office chair typically comes with 5 swivel casters, a design that allows the chair to move freely in all directions (360 degrees) while maintaining stability and preventing tipping. However, the specific configuration may vary depending on the chair's intended use and features.
| Configuration Type | Wheel Combination | Features and Use |
|---|---|---|
| Standard All-Swivel Setup | 5 swivel casters | This is the most common configuration, offering maximum mobility and flexibility for users to move freely within the workspace. |
| With Brake Function | 2 braked casters + 3 swivel casters or 1 braked caster + 4 swivel casters | Some casters are equipped with a brake mechanism (usually on the rear casters). When engaged, the chair is locked in place, preventing unwanted movement. This is especially useful when standing up or when stability is needed during tasks. |
| Floor Type Consideration | Hard floors (e.g., tile, hardwood): Use soft casters (e.g., PU wheels) Carpeted floors: Use harder casters (e.g., nylon wheels) |
Different wheel materials are selected based on the floor type to ensure smooth movement and protect the floor surface. |
- Calculate Load: Add the weight of the furniture and its maximum contents, then divide by the number of casters. Choose a caster with a higher load rating.
- Consider the Floor: Select a soft, non-marking material for delicate floors.
- Define the Environment: Choose quiet wheels for offices and wear-resistant wheels for industrial use.
- Check the Installation: Match the caster's mounting style to your furniture's existing holes or structure.
By understanding these key factors, you can ensure your furniture moves smoothly, safely, and without damaging your floors.
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