About us


Our production process is completely in accordance with Japanese standards, all materials are imported from Japan, the technical standards are consistent with EZO, and the product quality can completely replace EZO bearings.Customized ball bearings for different fields of application,Specialized testing technology such as the dental test bench to measure the rotation of high-speed instruments.You are looking for miniature ball bearings or spindle ball bearings for your machines? You would like to perform measurements under real conditions with a special ball bearing testing technology? You need specific equipment to install the bearings professionally and correctly? At PJB, you will receive the suitable products.

Ball bearing equipment such as wave spring washers or spacer shims, that the components can be installed tolerance free.Our highly precise, innovative, and reliable ball bearing solutions make it possible for you to realize your applications regarding your individual requirements.Bearings, which are integrated into various devices and rotate while supporting loads, are important parts that play active roles as “behind-the-scene players” essential to our lives.Our company produces bearings of various specifications for diverse industrial fields, including robotics and other leading-edge industries, in small lots of diverse products.Of these, we focus on extra-miniature/miniature/small bearings, flanged bearings, extra-thin-section bearings and large stainless-steel bearings and meet extensive needs.

PJB Bearings: The fruit of our high-precision processing technology

Sophisticated high-precision processing technologies
In manufacturing precision bearings, it’s essential to have high-precision processors and to build up prominent technologies and gain the experience of using those processors.
With precision processing technology that takes advantage of such comprehensive, long-established strengths, our company has realized the manufacture of high-precision, quality products even for extra-thin-section and stainless-steel bearings, which require especially high-standard technology.
Precise surface roughness processing of 10 nm (0.01 μm) is possible by the superfinishing of the raceway.


The food & beverages field.Bearings used for machinery that comes into contact with food need to be extra safe and corrosion-resistant.Our company produces stainless-steel bearings filled with grease for food-contact applications on an exclusive assembly line.These bearings, which are more corrosion-resistant than those made of bearing steel, are used for food processors, food blenders, coffee mills, food/beverage fillers and the like. For sealing, it’s also possible to use fluoro rubber (FKM) seals, which are highly resistant to heat, oils and chemicals.

The medical and nursing field.Extremely high precision is required for bearings used in medical equipment.
Extra-thin-section stainless-steel bearings are used for medical equipment that needs to move efficiently in small spaces, including surgical assistance robots, in-vitro fertilization devices and peristaltic pumps, as well as for leading-edge technologies, such as lifting beds and robot suits for nursing.For sealing, it’s also possible to use fluoro rubber (FKM) seals, which is highly resistant to heat, oils and chemicals.

The industrial robot field.Another field where high-precision bearings are essential is industrial robots, where outstanding technological advances are being made.The extra-miniature, miniature, small and extra-thin-section bearings in which our company specializes are used for robot arms and grippers that require precise movements, contributing to the production of smaller, lighter-weight devices.

PJB Bearings: Contributing to “the fourth industrial revolution”

Drivers of “the fourth industrial revolution” are the Internet of Things (IoT, a network where all different things are connected to the Internet and work in a coordinated manner), information and communication technology (ICT), artificial intelligence (AI), and robots used as intelligent mechanical systems.High-precision bearings are important parts that support the IoT and robots, which are key next-generation technologies. With high- Precision Miniature Bearings | Bearings PJB Bearings Co.,Ltd.,Customized miniature bearings manufacturer , extra-thin-section bearings and stainless-steel bearings, our company provides support in situations that require energy and space savings and next-generation technologies in communications, advanced medical care and robotics, in order to contribute to an IoT society that links people with things and things with other things.

PJB Bearings: For timely delivery

Demand forecast based on an analysis of customer needs and many years of experience
We determine demand trends by analyzing customer needs accumulated over the course of many years. Lead time is minimized by proceeding with the production of semi-finished products based on appropriate demand forecast and by starting the assembly process depending on the specifications of individual customers (e.g., lubricant filling, seal/shield attachment) as soon as orders come in.