Material

Plastic Thrust Bearings in the Waterbed

Our plastic thrust bearings were used in a waterbed with a massage function. The waterbed is rotated by the force of the water jet, creating a spiral water flow that is used for the massage. The bearings are used in the nozzles. Since it is used exclusively underwater, this environment is very suitable for plastic bearings. Water acts as a substitute for lubricant and helps dissipate the heat generated by rotation. Therefore, a longer lifespan can be expected compared to use in dry environments. Related Pages ・Thrust Ball Bearings ・PPS ・Water/Seawater Back to Case studies

Plastic Bearings in the Cleaning Process of Ampoules

Our plastic bearings were utilized for the ampoule cleaning process. Initially, two miniature plastic bearings from other manufacturers were used to avoid the wear of metal powder. However, wear problems also arose with the plastic bearings, leading to difficulties. One of the reasons was the strength of the plastic material, but the fact that they were standard products also led to dimensional interference and accelerated wear. Therefore, we proposed using PEEK bearings with a multi-row configuration tailored to the device’s dimensions, which resolved the issue. In our case, the multi-row configuration that combines both bearings is more cost-effective than using two separate bearings. Related Pages ・Ball Bearings ・Custom-made Ball Bearings[…..]

Ready-to-Install Plastic Bearing Guide Roller for the Galvanizing Plant

One of our customers has used our bearings in their galvanizing plant for wire material. Previously, this customer had used plastic plain bearings, but they frequently encountered issues such as high rotational resistance, damage, and wire breakage. After reviewing the operating conditions and shapes, we designed a roller shape that is tailored to the wire. Additionally, we combined various plastic materials for the outer ring, inner ring, and cage, and proposed a roller bearing with an integrated ball bearing. As a result, there were no concerns about the penetration of the galvanizing solution, and the need for frequent maintenance was eliminated. Downtimes due to wire breakages and quality issues caused[…..]

Plastic Bearings for Cleaning with Hydrofluoric Acid

This is a plastic bearing that can be used for hydrofluoric acid cleaning of semiconductors and LCDs. We are the only company in Japan that manufactures ball bearings from PCTFE (Polychlorotrifluoroethylene). Plastic Bearings for Cleaning with Hydrofluoric Acid Our bearings have a specification of PCTFE (Poly Chloro Tri Fluoro Ethylene) for the main body and SiC (Silicon Carbide) for the balls. Hydrofluoric acid, used in the cleaning of semiconductors and LCDs, corrodes many metals, plastics, and ceramics. We manufacture PCTFE bearings that are resistant to hydrofluoric acid. PCTFE: Poly Chloro Tri Fluoro Ethylene (Polychlorotrifluoroethylene) is a hard plastic that has proven to be particularly resistant to hydrofluoric acid. Depending on[…..]

Plastic Bearings for Toluene Cleaning

One of our customers has chosen our plastic ball bearings for the film transport roller shafts. Race ring and cage: PEEKBalls: Aluminum oxide ceramic After using the equipment, metallic bearings corrode in a short period when cleaned with chemicals such as toluene. Although other plastic materials can be used with these chemicals, we chose PEEK due to slightly increased load. As you can see, not only chemicals but also other conditions such as load, rotation speed, and temperature are involved in the material selection process. If you are considering the use of plastic bearings, please contact us. Related Pages ・Deep-groove Ball Bearings ・Chemical Environment ・Cleaning Machines Back to[…..]

Pillow Block Bearings for Cleaning with Sodium Hypochlorite

Our pillow block bearings are used in the bearings of the vegetable cleaning equipment. Housing: Stainless steel Bush: UHMWPE (Ultra-high-molecular-weight polyethylene) Sleeve: SUS304 Since the unit is used in a tank with sodium hypochlorite, it would quickly rust if conventional pillow block bearings were used. Therefore, you have opted for our plastic pillow block bearings. These do not require lubrication and there are no worries about rust or corrosion. Depending on the operating conditions, bush materials such as PTFE or phenol may also be better suited. We can make material suggestions based on your operating conditions. Furthermore, the production of bushes with special shapes, such as groove machining in the[…..]

Phosphoric Acid Resistant Plastic Bearing

Phosphoric acid is commonly used in electroplating solutions and other applications. In phosphoric acid environments, conventional metal bearings can corrode. At Kashima Bearings, we manufacture bearings from materials resistant to phosphoric acid. These plastic bearings can be used without corrosion, leading to maintenance-free operation and longer service life. The resistance depends on the concentration and temperature, so please inform us of these details when making inquiries. Based on our experience, we can also create special material combinations tailored to your needs, even if they are not offered by other manufacturers. Additionally, depending on the load, speed, and other usage conditions, it might be advisable to use other materials. Please inform[…..]

Full Ball Type Plastic Ball Bearings Without Cages

Full-ball plastic ball bearings without a cage do not have a cage. Therefore, these bearings are used in dirty water, as contaminants do not remain in the cage. For example, they are used in a coating tank. Full Ball Type Plastic Ball bearings without Cages Usually, deep groove ball bearings have cages to retain the balls. However, in cases where they are used in chemical environments or in water with impurities, deep groove ball bearings sometimes fail because the impurities remain in the cage. Also, metal bearings cannot be used in coating tanks. But our bearings can be used in coating tanks because they do not get coated. They are[…..]

Plastic Axial Bearings for Food Manufacturing (Processing) Equipment

Hygienic because no grease is used. Resistant to disinfectants, cleaning agents, and high temperatures, does not rust or corrode. Plastic bearings for food manufacturing facilities. Plastic axial bearings for food manufacturing (processing) equipment Typically, metal bearings are used in food manufacturing machines, which are protected from direct contact with moisture or steam by seals. Even if the bearings have a sealing structure, moisture can penetrate over time and grease can leak out. With a plastic axial bearing, the need for grease is eliminated, and it is corrosion-resistant. Therefore, there are no concerns about grease or rust getting into the food. It can be used in environments with cleaning solutions (such[…..]

Plastic Deep Groove Ball Bearings for Transporting Inserted Plums

Rust-resistant, corrosion-resistant, ideal for production lines in food manufacturing. Safe for use in food as they are grease-free. Can be cleaned with water. Plastic deep groove ball bearings for transporting inserted plums This is a plastic deep groove ball bearing designed for transporting pickled plums. In the manufacturing process of pickled plums, salt and citric acid are used. Metallic bearings run the risk of corrosion and rust, or the potential for grease to contaminate the food. Plastic bearings, however, do not corrode even in the presence of salt and citric acid. Since no grease is used, it’s an environmentally friendly product that can be safely used for extended periods. Recommended[…..]

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