Ball Bearings are fundamental components used in a wide range of machinery and mechanical systems, enabling smooth and efficient rotational motion while minimizing friction and wear. These ingenious devices consist of an outer and inner ring with a set of balls sandwiched between them. The plays a pivotal role in selecting the right bearing for specific applications, ensuring optimal performance and longevity of the equipment.
1. What Are the Standard Ball Bearing Sizes
The standard sizes vary widely based on the type and application of the bearing. are available in both metric and imperial sizes.
Common metric sizes for Ball Brarings include:
· 6000 series: 10mm bore diameter
· 6200 series: 10mm to 30mm bore diameter
· 6300 series: 10mm to 35mm bore diameter
· 6800 series: 10mm to 80mm bore diameter
· 6900 series: 10mm to 100mm bore diameter
For imperial sizes, common series include:
· R series: 0.1875 to 0.5 inch diameter
· 1600 series: 0.1875 to 0.5 inch diameter
· 16000 series: 10.319 to 12.7 mm bore diameter
· 63000 series: 10.319 to 12.7 mm bore diameter
2. How to Measure Ball Bearing Sizes







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Shanghai Quaydots Mechanical & Electrical Engineering Technology Co., Ltd. is a technology-based enterprise that integrates research, design, production, maintenance, sales, and service, dedicated to serving the lifting market and providing customers with the perfect lifting and handling solutions. It is one of the main suppliers of grabs, lifting devices, clamps, and rigging in the Chinese market. The factory is located on the beautiful shore of Taihu Lake in Wuxi, with convenient transportation and fast logistics, providing customers with high-quality and efficient «QUAYDOTS» lifting tools.
1. Q: What's your MOQ?
A: 1 Set;
2. Q: What's your package?
A: Main body in plywood box or in plastic woven cloths; Spare parts in plywood boxes;
3. Q: What's your delivery period?
A: Within 10/25/40 days after your prepayment received; exact period should be based on detailed requirements and actual period;
4. Q: What's your warranty period?
A: 12 months from winches accepted;
5. Q: Do you have engineer oversea installation service?
A: Yes; We have;
6. Q: What kinds of products do you have?
A: All kinds of industrial electric winch (especially non-standard); Overhead Crane; Gantry Crane, Electric Hoist; Screw Hoist;
Radial/Flat Gate Hoist; Steel Gate; etc.
7. Q: Do you provide lift tools?
A: Yes, we can provide any kinds of lift tools such as lift sling belt, lift clamp, grab, magnet , pulley blocks, hook, lock catch,
wire rope, fiber rope, etc.
8. Q: Could your winches drag inclined?
A: Yea, our electric winches could drag horizontal, drag inclined, hoisting vertical.