Office Chair Invisible Ball Bearings

Currently, explicit price information for 'office chair invisible ball bearings' cannot be directly provided, but the price range and influencing factors can be inferred from similar products.

Price References for Similar Products

There are some 'invisible casters' products on the market with similar functions. For example, the 'Yingya Furniture Embedded Invisible Small Casters' are priced at 1.80 yuan each. Their descriptions include keywords such as 'hidden universal casters' and 'office furniture swivel chairs', which highly match the functional requirements of 'invisible ball bearings'. These products usually adopt an embedded design, can be hidden inside the chair legs, and have a 360-degree rotation function, meeting the requirements for flexibility and aesthetics in office scenarios. Although the 'ball bearing' structure is not explicitly indicated, the core components of universal casters typically include ball bearings, so it can be inferred that their technical principles share commonalities with 'invisible ball bearings'.

Possible Reasons for Price Differences

1. Material and Craftsmanship: If 'invisible ball bearings' use more wear-resistant metal materials (such as stainless steel) or precision machining processes, the cost will be significantly higher than that of ordinary plastic casters, and the price may rise to 5-10 yuan per piece.
2. Brand Premium: Well-known brands or patented design products may be priced higher due to factors such as brand value and after-sales service. For example, imported brands or high-end custom models may cost more than 20 yuan each.
3. Specifications and Load Capacity: The diameter, width, and load-bearing capacity of the casters directly affect the price. For example, heavy-duty casters with a load capacity exceeding 100kg are usually 2-3 times the price of light-duty products.

Purchase Recommendations

1. Clarify Requirements: First, confirm the load-bearing range of the casters (e.g., the load-bearing capacity of a single caster should be ≥50kg), the installation method (embedded or external), and whether noise reduction is required.
2. Compare Parameters: Choose products that match the dimensions (such as wheel diameter and axle hole diameter) of the original office chair casters to avoid installation difficulties or stability issues.
3. Channel Selection: Online platforms (such as 1688 and JD Industrial Products) offer transparent prices and a wide variety of choices. Offline hardware markets allow on-site testing of the smoothness of the casters, but attention should be paid to the bargaining space.

If more accurate pricing is required, it is recommended to contact caster manufacturers (such as Foshan Baina Hardware Products Co., Ltd.) and provide specific parameters (such as material, size, and load capacity) for custom quotes.