Best Ball bearing

  • Dimensions: 1/4"x5/8"x0.196"
  • Rubber seal on both sides
  • 100% Chrome Steel for higher resistance and durability
  • Package & Size : 10pcs 608-2RS ball bearings Size :...
  • Material: Carbon steel, durability and resistance to...
  • Widely Use : Motor,skateboards, inline skates, scooters or...
  • Package & Size : 10pcs 608-2RS ball bearings Size :...
  • Material: Carbon steel, durability and resistance to...
  • Widely Use : Motor,skateboards, inline skates, scooters or...
  • High precision grade G25
  • Finest quality AISI 52100 chrome steel
  • Item Package Dimension: 4.0" L x 3.0" W x 3.0" H
  • 304 STAINLESS STEEL- Our coin ring balls are made of 304...
  • MOST POPULAR SIZES- The package includes 8 sizes of Forging...
  • SMOOTH SURFACE- The surface of steel balls are round and...
  • G25 Chrome Steel Bearing Balls
  • ISO 9001:2008 Provides higher quality and durability,...

A ball bearing is a bearing in which rolling bodies are inserted between an inner and outer ring to reduce frictional resistance. Ball bearings are mainly used to fix shafts and axles. Depending on the design, they allow radial or axial rotation of the shaft

Our Top Ball bearing Pick

(10 Pack) PGN - R4-2RS Sealed Ball Bearing - 1/4"x5/8"x0.196" - Lubricated - Chrome Steel
  • Dimensions: 1/4"x5/8"x0.196"
  • Rubber seal on both sides
  • 100% Chrome Steel for higher resistance and durability
  • Supports 38,000 rpm
  • Our high-quality bearing is made to reduce your replacement frequency and maintenance cost

Free time: Ball bearing Video Guide

The ball bearing has an extremely rich history dating back over 2700 years. At the end of the 20th century, during archaeological excavations, a Celtic chariot was discovered with cylindrical pieces of beech wood near the wheel hubs. Based on this discovery, researchers and archaeologists assume that the Celts used a primitive form of cylindrical roller bearing as early as 700 BC to improve the rolling resistance of cars and carts. Towards the end of the Roman Empire, ball bearings were also used in Rome to build powerful hoists. The history of the modern ball bearing began during the industrial revolution in the second half of the 18th century. During the period of industrial upheaval, the need arose for a bearing that could deliver better performance than traditional plain bearings at low speeds. The plain bearings used up to then were not really useful at low speeds, because they were wearing out very quickly. John Harrison is considered the forefather of the modern ball bearing. In 1759, the watchmaker invented a roller bearing with cage, which he had developed especially for a ship’s chronometer from his manufactory. In the course of the centuries numerous new variants were added. Major developments and innovations have taken place above all in the areas of manufacturing accuracy and lubricant development. Numerous standards have established common standard dimensions, which have greatly simplified design and development. Today, there are highly developed ball bearings with integrated sensors that can be used, for example, to determine the degree of wear electronically

Ball bearings represent a subgroup of rolling bearings in which balls (rolling elements) are used to achieve optimum rolling resistance. In modern ball bearings, cages are used which serve to keep the rolling elements (balls, cones, cylinders) at an equal distance. Although ball bearings without cages have proven less reliable, some special designs that do not require cages are still produced. These are primarily used in aircraft control systems. In rolling bearings without a cage, more rolling elements can be used per bearing, which leads to a significant increase in load capacity. However, these are absolutely unsuitable for use at higher speeds. Cages were initially made of brass. Brass offered an increased smoothness of running, whereby ball bearings found more and more areas of application and gained popularity. Nowadays, cages are made of glass fibre reinforced plastic, which has similar characteristics to brass, but is much cheaper to produce

The service life of a ball bearing depends on many different factors. Some influencing variables, such as bearing load, can be calculated mathematically, while others, such as contamination or lubricating condition, cannot be determined mathematically. In the case of ball bearings, there are sometimes serious differences in quality, so that rolling bearings have an average service life of a few hundred hours for less demanding application scenarios such as in household appliances. On the other hand, there are high performance ball bearings that offer high reliability and manufacturing quality and have an average service life of several hundred thousand hours. These high-quality rolling bearings are mainly used in aviation and shipping.

TOP 5 Ball bearing Bestseller

(10 Pack) PGN - R4-2RS Sealed Ball Bearing - 1/4"x5/8"x0.196" - Lubricated - Chrome Steel
  • Dimensions: 1/4"x5/8"x0.196"
  • Rubber seal on both sides
  • 100% Chrome Steel for higher resistance and durability
  • Supports 38,000 rpm
  • Our high-quality bearing is made to reduce your replacement frequency and maintenance cost
Wellgo 608-2RS Ball Bearings,Skateboard Bearings,Double Rubber Sealed Shielded Miniature Deep Groove Bearings for Skateboards Inline Skates Scooters Roller Blade Skates Long boards (10pcs)
  • Package & Size : 10pcs 608-2RS ball bearings Size : 8x22x7mm, rubber sealed deep groove.
  • Material: Carbon steel, durability and resistance to deformity under heavy loads.
  • Widely Use : Motor,skateboards, inline skates, scooters or other skating applications etc
  • Our 608-2 RS bearings Shields on both sides keeping lubricant in and contaminants out.
  • Attention : We Used some rust protection oil on the bearings,if you dont want the bearings get rusty pls do not put it on the damp place.also when use you'd better use gloves to touch the bearings to prevent it get rusty, as your finger with sweat.
Avler 1/2 Inch (.50 Caliber) Steel Bearing Balls for Slingshot Ammo (Pack of 100)
  • Material: Chrome Steel
  • Weight: 8.4g each
  • 100% Round. No flat spots
  • Size: 1/2" Diameter (.50 Caliber) (12.7mm)
  • Pack of 100
BC Precision Balls Ten 1" Inch Chrome Steel Bearing Balls G25, CH1043
  • High precision grade G25
  • Finest quality AISI 52100 chrome steel
  • Item Package Dimension: 4.0" L x 3.0" W x 3.0" H
  • Item Package Weight: 1.54 lb
16 Pieces Coin Ring Making Forging Balls, SourceTon Stainless Steel Balls Assortment of 3/4 Inch, 5/8 Inch, 9/16 Inch, 1/2 Inch, 7/16 Inch, 3/8 Inch, 5/16 Inch and 1/4 Inch
  • 304 STAINLESS STEEL- Our coin ring balls are made of 304 stainless steel, hard, durable and never rusty.
  • MOST POPULAR SIZES- The package includes 8 sizes of Forging Balls: 3/ 4 inch, 5/ 8 inch, 9/ 16 inch, 1/ 2 inch, 7/ 16 inch, 3/ 8 inch, 5/ 16 inch and 1/ 4 inch, each size for 1 piece, meet you different needs.
  • SMOOTH SURFACE- The surface of steel balls are round and smooth made by high precision machine.
  • GREAT FOR MAKING COIN RING- The coin ring balls can be widely applied, especially for forging coin ring.
  • PACKAGE INCLUDES- There are 8 sizes of Forging Balls and 2 pieces for each sizes in the package.

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