Steel balls are key to making sure today’s machines work well and last a long time in many different fields. Making them takes several careful steps, like shaping metal and then making them perfectly round and smooth. People keep finding better materials and ways to make them, helping these balls meet the growing need for being tough and precise all over the world.
Steel balls are very round spheres, usually made from hard chrome steel for use inside bearings. Inside a bearing, they roll smoothly between rings, letting parts spin easily without grinding. This low-friction rolling helps machines spin faster, carry loads smoothly, and avoid wearing out quickly.
Top 10 Global Steel Ball Manufacturers List
Name | Founding Year |
SKF Group | 1907 |
Timken Company | 1899 |
NSK Ltd. | 1916 |
NTN Corporation | 1918 |
Baosteel Group | 1978 |
Schaeffler Group | 1883 |
Nippon Steel Corporation | 1950 |
JTEKT Corporation | 2006 |
Shanghai Erjie Co., Ltd. | 1970 |
Liaoyang Steel Ball Group | 1992 |
SKF Group
Year Founded: 1907
Main Products
- Bearings
- Seals
- Lubrication systems
- Maintenance products
- Mechatronics products
- Power transmission products
- Steel balls
Company Description
SKF Group, formally AB SKF and based in Gothenburg, Sweden, started back in 1907. Sven Gustaf Wingquist, an engineer working at Gamlestadens Fabriker AB, founded the company. He came up with the spherical ball bearing.
This invention was a big help because it solved alignment problems that machinery often had during that time. The first bit of money and the project to actually make ball bearings came from Gamlestadens Fabriker AB. Axel Carlander and Knut Johansson Mark, who were co-owners there, helped guide this startup.
Axel Carlander was the very first chairman of the board, holding that job from 1907 until 1937. He put successful strategies in place that helped SKF get started and grow.
The company’s main headquarters has always stayed in Gothenburg, right where it began. From Sweden, SKF didn’t waste time expanding across the globe.
By 1912, only five years after it started, SKF was already present in 32 countries. Jump ahead to 1930, and the company employed more than 21,000 people. They worked in 12 different manufacturing plants around the world.
At that time, the biggest factory SKF operated was in Philadelphia, Pennsylvania, in the United States.
Steel balls are a really key part of SKF’s main business. The company makes chrome steel balls that go inside its own bearings. They also sell these steel balls as separate products.
These aren’t simple items; they are precision-engineered parts. The quality of these steel balls really decides how good the final bearing is, how long it lasts, and how well it performs.
SKF produces steel balls to different levels of precision, called grades. You might see something like Grade 20, which indicates how precisely the ball is made. For example, SKF offers steel balls with a 12.7mm diameter (that’s half an inch). These specific ones are made using carbon chromium steel and have a hardness of 58-63 HRC.
To stay competitive, SKF has looked into working together with other companies on steel ball production. One possibility explored was a joint venture with NN Ball & Roller Inc. from the U.S. and the German company FAG Kugelfischer Georg Schäfer AG.
The plan was to create a shared company in Europe just for making and selling chrome steel balls. By making balls in bigger amounts together, they aimed to lower costs and improve quality, making them more competitive.
That original Gothenburg factory, the place where the first self-aligning ball bearing was invented, is still running. It makes over one million self-aligning roller bearings every year. Making steel balls correctly requires complex manufacturing processes. This ensures the balls have exact sizes, super smooth surfaces, and the right material qualities for demanding modern uses.
Timken Company
Year Founded: 1899
Main Products
- Engineered bearings (tapered roller, spherical roller, cylindrical roller, ball bearings)
- Industrial motion products (drives, automatic lubrication systems, linear motion products)
- Chain, belts, couplings
- Industrial clutches and brakes
- Housed units
- Corrosion-resistant bearings
Company Description
The Timken Company started out in St. Louis back in 1899, founded by Henry Timken as The Timken Roller Bearing Axle Company. Just two years later, in 1901, the company moved its operations to Canton, Ohio.
That Canton location was a smart choice. It put Timken close to the growing car industry hubs in Detroit and Cleveland. Plus, it was near major steel centers in Pittsburgh and Cleveland, too. The move made sense because automobiles were really starting to replace horse-drawn carriages.
It all began when Henry Timken patented an improved tapered roller bearing in 1898; that was the foundation. Timken grew from there into a global name in bearings and power transmission products. Today, the company operates in 42 countries around the world.
Back in 1917, Timken even started making its own steel and tubes right there in Canton. Doing this gave them more control over the steel quality for their bearings. Demand for steel was high during World War I, so making their own helped ensure supply.
Looking just at steel ball bearings, Timken offers quite a few. They make bearings for many different applications and industries. The lineup includes radial deep-groove types, angular contact ball bearings, and even specialized ones for aerospace use.
These bearings are designed to handle various kinds of loads. Some manage radial forces pushing out from the center. Others handle thrust forces pushing along the shaft. Some bearings are built for combinations of these forces.
Timken has different ball bearing series that you might see. The HK series works well for heavy loads. Then there’s the HD series; it has a unique and fractured outer ring design that lets them pack in the maximum number of balls.
The HA series is a non-separable type with counter-bored outer rings. Timken also offers the HT series, a high-performance line featuring full deep-groove outer rings. You can find these ball bearings in sizes from a small 3mm bore up to a large 600mm bore.
Timken put a special focus on making corrosion-resistant steel ball bearings. These are really useful in the food and beverage industry. They use stainless steel for the rings, balls, and cages. The lubricant inside is food-grade, too.
This construction helps improve food safety. It also means production lines can run longer without issues, which is important. These corrosion-resistant options come in standard sizes, thin-section types, narrow designs, and miniature versions across several series (like 6000, 6200, 6300, and 600).
Another product is ball-bearing housed units. Think of these as a bearing already mounted inside a housing, ready to install. They often feature wide-inner-ring ball bearings, giving extra shaft support and different locking choices.
You can order these units pre-assembled – bearing, housing, seals, and locking system all together. Common types include pillow blocks, flanged cartridges, take-up units, and cylindrical cartridges.
For equipment needing high accuracy, like machine tools, Timken manufactures super-precision ball bearings. These have shown they work very well across a wide range of loads, speeds, and lubrication situations. The company’s duplexed, preloaded angular contact bearings use one-piece retainers. These offer excellent capacity and help make machine spindles very stiff and precise.
NSK Ltd.
Year Founded: 1916
Main Products
- Bearings (industrial and automotive)
- Precision machinery and parts
- Automotive components
- Steel balls
Company Description
NSK Ltd., headquartered in Tokyo, Japan, got its start as Nippon Seiko Limited partnership company way back on November 8, 1916. This was a big deal for Japanese industry because NSK actually developed the country’s very first ball bearings. The first president, a fellow named Takehiko Yamaguchi, led the original small team that eventually grew into a worldwide precision engineering leader.
Making steel balls became part of NSK’s business pretty early. Around 1926, the company started producing lots of steel balls at their Osaki plant. This showed they were serious about this key part needed for bearings.
Getting into steel balls early helped NSK become a major name in Japan’s steel ball industry. It really set the stage for them to become important in the global market later on. You see these steel balls inside many NSK products.
Expertise in making steel balls is really fundamental to how NSK operates. The company makes a wide variety of precise steel balls that go into different industries, with a strong focus on cars and trucks. These little balls are super important components in things like their well-known ball bearings, used just about everywhere.
NSK even has a joint venture focused on steel balls; it’s called NSK-AKS Precision Ball Company, located over in Clarinda, Iowa. Set up in 1988, this place works together with Amatsuji Steel Ball Mfg. Co., Ltd. They specialize in making high-quality precision steel balls for the auto industry and other bearing makers.
Making steel balls at NSK involves several careful steps to ensure they’re top quality. The process usually starts with heading, which shapes the metal. Then comes flashing to remove extra bits, heat treating to make them strong, and hard grinding plus lapping to get them perfectly smooth and round.
After all that, the balls get a good cleaning and a close visual inspection. This careful process makes sure the steel balls meet the tough requirements for important jobs, like inside car bearings or precision machines. Quality is definitely key here.
NSK doesn’t just sit still; the company keeps researching ways to make its steel balls even better. Engineers are always working on things like making the balls last longer, be more perfectly round, and resist wear and rust better. These kinds of improvements help out in lots of different industries that need reliable parts.
NTN Corporation
Year Founded: 1918
Main Products
- Ball Bearings (including deep groove ball bearings, angular contact ball bearings, duplex angular contact ball bearings)
- Cylindrical Roller Bearings
- Tapered Roller Bearings
- Spherical Roller Bearings
- Needle Roller Bearings
- Constant Velocity Joints (CVJ)
- Linear Guides and Bushings
- Mounted Units and Pillow Blocks
- Wheel Hubs
- Condition Monitoring Systems
Company Description
NTN Corporation, headquartered in Japan, got its start way back in 1918. The name came from the founders Niwa, Tomoe, and Nishizono. It’s grown a lot and is now one of the biggest bearing makers in Japan, right behind NSK Ltd.
NTN makes bearings and similar parts, selling them all over the world. The company is actually listed on the Tokyo Stock Exchange, which shows its importance.
They really have a global reach now. NTN USA Corporation started in 1990. It oversees several other NTN companies in America.
The main office for NTN Bearing Corporation of America? That’s in Mount Prospect, Illinois. Another place, American NTN Bearing Manufacturing Corporation in Elgin, Illinois, focuses just on making steel balls and anti-friction bearings.
Making steel balls is a really big part of what NTN does. The company has been working with ball bearings for more than 90 years. All that time means they know a ton about producing steel balls.
These balls are used in all sorts of bearings. Some are for tiny miniature bearings, maybe just 1.5mm on the inside. Others go into huge industrial bearings that are over 1,300mm wide inside.
Steel balls are the key parts inside bearings that let things turn smoothly. They reduce the rubbing, the friction between parts. This matters a lot in just about any machine you can think of.
How good the steel balls are makes a big difference. Better balls mean the bearings work better and last longer. It’s pretty straightforward.
Take their deep groove ball bearings, for instance. These are very common, and they absolutely need top-quality steel balls inside them.
NTN makes sure these balls are made just right. They need the exact size, perfect roundness, and a really smooth surface. Getting these details correct is super important for how well the bearing performs.
Sometimes, NTN makes special hybrid bearings, too. These are for specific jobs, maybe in high-speed machines or equipment used in wind energy. They mix steel races—the tracks the balls run in—with ceramic balls.
Using different materials like this shows the company can figure out solutions for tricky situations. They can adapt the product for whatever conditions it needs to work under.
You also find this focus on quality steel balls in their mounted bearing units. These units use the exact same high-grade steel balls as the regular deep groove bearings.
Plus, these units often have special seals. The seals help protect the bearing by keeping dirt and grime from getting inside. That added protection helps the bearing last.
Baosteel Group
Year Founded: 1978
Main Products
- Hot Rolled Steel Products
- Cold Rolled Steel Sheets
- Heavy Plate Products
- Pipe & Tube Products
- Bar & Wire Rod Products
- Special Steel Products
- Stainless Steel Products
Company Description
Baosteel Group, based in Shanghai, China, stands as one of the country’s most significant steel operations. It officially got going in December 1978, though things were already moving a year before that, setting up the project headquarters and the first plant. The main offices? They’re on Pudian Road in Pudong, and the big factory is north of the city, near the river.
The company’s name changed a bit over the years; in 1993, it became “Baoshan Iron & Steel (Group) Corporation.” A big shuffle happened in November 1998 when Baoshan Iron & Steel merged with two other groups – Shanghai Metallurgical Holding and Shanghai Meishan Group. That merger created the Shanghai Baosteel Group Corporation we know.
Later, in 2000, a part of the business called Baoshan Iron & Steel Co., Ltd. was formed. It became its own thing and was listed on the Shanghai Stock Exchange soon after.
Baosteel is famous for making huge amounts of steel, that’s true. But the company also produces steel balls, which involves a few different steps in manufacturing. It often kicks off with a process called stamping.
In stamping, steel wire or bars are fed into machines—these are called presses. The presses cut the material into pieces. Then, special tools called matrices clamp down hard on these pieces. We’re talking pressure between 10 and 20 tons, depending on how big the ball needs to be.
This stamping shapes the steel into a basic round form, called a “rough sphere.” It’s got the general shape, but it still has extra material that needs removing later on. It’s not finished yet.
After stamping, the rough spheres go through heat treatment. This part is super important for making the balls strong and durable. First up is quenching, where the spheres are cooled down really fast, usually by dipping them in oil.
Quenching makes the steel incredibly hard, which is good, but it also makes it kind of brittle. Tempering is the step that fixes that potential problem. You see, tempering involves heating the balls again, but to a lower temperature, somewhere around 170–230°C.
Heating them again like this helps ease the internal stresses created during quenching. This makes the balls tougher and much more resilient. They won’t be as likely to crack or break.
Baosteel has certainly made a name for itself around the world; it’s consistently ranked among the top steel producers globally. For example, way back in 2010, the company produced 44.50 million tons of steel, placing it third worldwide at the time. It even appeared on the Fortune Global 500 list for eight years straight, and has reported some quite large revenues more recently.
Schaeffler Group
Year Founded: 1883
Main Products
- Ball bearings
- Rolling and plain bearings
- Linear technology
- Clutch systems
- Transmission components
- Torsion dampers
- Valve train systems
- Camshaft phasing units
- Electric drives
- Radial insert ball bearings
Company Description
The Schaeffler Group, based in Germany, traces its origins back to Friedrich Fischer. Working as a locksmith and turner in Schweinfurt, Germany, Fischer invented the first ball grinding mill back in 1883. This machine was a big step forward; it allowed factories to make hardened cast-iron spheres in large numbers, all exactly the same size and perfectly round.
The Imperial Patent Office in Germany granted Fischer Patent No. 55783 for his ball grinding mill in 1890. That invention pretty much started the whole rolling bearing industry. Just six years later, 1896, Fischer established a company named “First Automated Cast Steel Ball Factory,” later known as FAG Kugelfischer. The entire business was founded on his unique ball grinding machine design.
Now, the Schaeffler Group as it exists today formed when INA bought FAG back in 2001. INA itself was started by Dr. Georg Schaeffler in 1949. Schaeffler operates all over the world now, with sites in 55 countries. They even have manufacturing facilities in Canada (since the 1950s) and Joplin, Missouri (since 1969).
Schaeffler is especially recognized for producing extremely precise steel balls. This happens at their plants located in Homburg and Eltmann, right in Germany. These balls need to meet some very tough quality requirements. How round they are can only vary within the tenth of a micron range. To give you an idea, a thin human hair is around 30 microns thick – that shows how incredibly precise these balls must be.
Making these steel balls is a detailed process involving seven main stages. First, wire coils are cut into pieces, and these pieces are pressed together. This creates a blank ball shape that has a kind of “Saturn ring” and a pole.
Next comes flashing, where those extra bits, the ring and pole, are removed to make the ball properly round. After that, the balls head into a furnace for hardening. This makes them durable enough to handle the pressure inside bearings. Following annealing and quenching, the balls go through hard grinding and then super-fine grinding, which is called lapping. Throughout this entire journey, the balls are constantly measured to ensure they have supreme roundness and the right surface characteristics.
Nippon Steel Corporation
Year Founded: 1950
Main Products
- Hot-Rolled Steel Sheets and Coils
- Cold-Rolled Steel Sheets and Coils
- Coated Steel Sheets (DURGRIP™, ZAM™, SuperDyma™, ALSHEET™)
- Color Coated Steel Sheets
- Electrolytic Tinplate
- Electrical Steel Sheets
- Bars & Wire Rods
- Pipes & Tubes
- Railway, Automotive & Machinery Parts
- Titanium Products
- Stainless Steel Products
Company Description
Nippon Steel Corporation, located at 2-6-1 Marunouchi, Chiyoda-ku, Tokyo 100-8071, Japan, was established on April 1, 1950. It has grown quite a bit since then, becoming Japan’s biggest steel producer. The company is also a major name globally in making steel. Right now, Tadashi IMAI is in charge as the Representative Director, President, and COO.
You won’t find “Steel Balls” listed directly in their main products, interestingly enough. But, Nippon Steel makes lots of different steel items that could potentially be used for steel balls down the line.
Their division is working with Bars and Wire Rods? That is likely where steel balls, or maybe the starting materials for them, would originate. They have a lot of skill in making high-performance steel for cars and machines. This expertise suggests they can definitely produce precise steel balls – the kind needing exact measurements and special metal qualities, like being very hard or tough.
Nippon Steel doesn’t just operate factories in Japan; no, they have manufacturing sites in over 15 other countries as well. This gives them a truly worldwide reach. Because they are established internationally like this, the business can supply customers all over the globe.
These international customers might be the ones looking for steel balls. Maybe for things like bearings, different car parts, or complex industrial equipment.
The company structures its business into four main sections. Steelmaking and Steel Fabrication are the primary focus. There’s also Engineering and Construction, Chemicals and Materials, and System Solutions.
A significant part of their strategy involves research and development, or R&D. This research work is absolutely essential. It helps them develop specialized products, including steel balls designed to meet specific needs for hardness or long-lasting durability.
JTEKT Corporation
Year Founded: 2006
Main Products
- Steering Systems (Electric Power Steering, Hydraulic Power Steering)
- Bearings (Ball, Roller, Needle)
- Driveline Components
- Machine Tools
- Electronic Control Devices
- Automotive Components
Company Description
JTEKT Corporation, which has its main office in Osaka, Japan, came about back in January 2006. It was formed when two older Japanese companies, Koyo Seiko Co. and Toyoda Machine Works, merged. JTEKT is actually part of the Toyota Group, and it’s known globally for making lots of different industrial things.
The bearing part of the business has a really long history, starting way back in 1921. You might have heard of the Koyo brand name; that was them until they switched everything under the JTEKT name in 2022. They make bearing parts for cars and other industries, too.
JTEKT has also been working in North America for a very long time, since 1958. That just shows they’ve been operating around the world for decades.
When it comes to ball bearings, JTEKT makes an incredible range. They can produce seriously huge ones, like seven meters across on the outside. Then they also make super tiny ones, where the hole in the middle is just one millimeter.
Because they can make all these different sizes, lots of different industries use their bearings. Think about aerospace, farming equipment, electric motors, and machine tools. Power sports vehicles, pumps, steel factories, and even wind turbines use JTEKT bearings.
Steel mills are rough places for machinery, really harsh. JTEKT engineers special ball bearings designed just for that environment. These bearings have to handle heavy weights, spin really fast, deal with intense heat, and survive getting wet or covered in mill scale—tiny metal bits.
The company spent time developing advanced materials for the bearing steel. This helps the bearings last longer and resist corrosion better, which is super important in those tough steel mill conditions.
They developed something called the JHS series, which stands for JTEKT Hyper Strong. These newer bearings can last two to four times longer than the regular ones. That’s a big deal in steel production, where you need machines running all the time.
For rolling mills specifically, where steel gets shaped, JTEKT worked on ball bearings that resist water and scale getting inside. Those bearings also have to handle heavy loads and high speeds. Improving the bearing materials and the seals helps them last longer in those specific applications.
JTEKT also knows a lot about multi-roll mill backup rolls. They provide very precise ball bearings for these, built to be durable based on years of experience. These bearings have strong outer rings and good seals to keep the lubrication working right.
Shanghai Erjie Co., Ltd.
Year Founded: 1970
Main Products
- Alkali resistant glassfibre continuous roving
- Premix chopped strand
- Water-dispersed chopped strand
- Various mesh and mat materials
Company Description
Shanghai Erjie Co., Ltd., which also operates as Huierjie Glassfibre Company, is a significant maker of glass fiber items based in Xiangyang city, Hubei Province, China. This spot is pretty central in China. That location means getting products to big cities like Beijing or Shanghai isn’t too hard because the transportation options are decent.
The company actually got its start way back in 1970. It has been around for over fifty years, making different items. A big step happened in 1988 when Shanghai Erjie Co., Ltd. began producing a special kind of material called AR Glassfibre. Getting into that advanced stuff early helped the business become known in that field.
Glass fiber is the main focus for Shanghai Erjie Co., Ltd., but the company also makes steel balls. People know these steel balls for being well-made and consistent, which is important for many factory machines and setups.
Because the company understands materials science quite well, its steel balls are built tough. They resist wearing out easily. That’s why you’ll find them used in parts like bearings or components for cars and other machinery.
Putting money into research and development is clearly a priority at Shanghai Erjie Co., Ltd. They are always working on improving their products, and that includes the steel balls.
You can tell they care about quality because they hold an ISO9001:2000 certification. This paperwork confirms that everything made there, steel balls too, has to meet tough international guidelines. Following rules like BSEN 15422:2008 and ASTM C1666/C 1666/M-07 also points to how dedicated they are to making top-notch materials good enough for anywhere in the world.
Liaoyang Steel Ball Group
Year Founded: 1992
Main Products
- UOE longitudinal seam pipes
- Spiral seam Submerged Arc Welded (SAW) pipes
- Steel balls for bearings
- Welded steel pipes
- Seamless steel pipes
Company Description
Liaoyang Steel Ball Group, which also goes by Liaoyang Steel Tube Company Ltd (LSTC), is located in Liaoyang City in the Liaoning Province of northeast China. It got started back in 1992. Since then, Liaoyang Steel Ball Group has grown into a pretty important maker of steel in China. The company has some solid financial backing–registered capital is over 13 million USD, and total assets hover around 100 million USD.
Their facility is quite large, you know. It covers 750,000 square meters right there in Liaoyang City.
Nobody’s quite sure exactly when Liaoyang began making steel balls. But their story definitely connects to China figuring out how to make its own steel balls domestically. See, before 1948, China mostly bought steel balls from other places, especially Japan during the war period. Then, a major step happened when Jin Deyuan, Song Shifa, and others managed to produce the very first Chinese steel balls at the ZWZ bearing factory.
When it comes to making pipes, they have a big setup. Liaoyang Steel Ball Group runs 3 lines for UOE pipes and 4 lines for SSAW pipes, all spread across 4 different workshops. Their UOE pipes come in various sizes, from 406mm up to 1626mm on the outside diameter. Wall thickness for these pipes goes from 6mm all the way to 38.5mm, and some can be made really long–up to 18 meters.
The SSAW pipes are different, ranging from 219mm to 2620mm in outer diameter. Their wall thickness is between 5mm and 22mm. With all these lines running, the company can produce a massive amount of pipe each year, potentially hitting 1.2 million metric tons. That’s a lot of steel pipe.
Liaoyang has earned some important certifications over the years, too. These approvals show they are serious about quality and meeting standards. Back in March 1998, they received permission to use the official mark from the American Petroleum Institute (API), and they still hold that approval today.
Later, in 2002, the company got certified for its management systems. They achieved ISO 9001:2000 and ISO 14001:2004 from DNV. Then, in 2004, they obtained a special license from the state government. Not many manufacturers in China had one at that time for producing specific kinds of pipes used for oil and gas transport, following the GB/T9711.2-1999 rules.
The steel balls Liaoyang makes are part of that long Chinese tradition of building up industry after liberation. Help came from the Soviet Union back in the 1950s, you might find interesting. Technology and know-how imported from there really pushed things forward, with companies like ZWZ, HRB, and LYC sending people to study and bringing in equipment.
Conclusion
Steel balls let parts roll smoothly instead of scraping, making them totally essential. Making them involves advanced methods to get that near-perfect shape and finish. If you ever need stainless steel products, give Jianglin Steel a look; they’ve got everything you need.
