Deep Groove Ball Bearings Japan Co, Ltd.

Our deep groove ball bearings deliver reliable performance in a wide range of applications and conditions. With super-finished raceways and controlled geometries, our premium design helps ensure consistent quality.
Extended Product Offering: Our portfolio includes standard, thin-section, narrow, wide and miniature and extra-small deep groove ball bearings that span 3 mm to 400 mm bore sizes. The extended product line includes a complete offering of open, shields, seals and snap ring combinations.
Easy Interchange: Designed as metric bearings, our deep groove ball bearings follow ISO standards and are dimensionally interchangeable with competitor metric products.
Premium Lubricants: For reduced torque and a quieter operation,
premium lubricant comes standard on all sealed and shielded deep groove ball bearings. This electric motor bearing grease has a wide operating temperature range from -29° C to 177° C.
Brass Cage Availability: Deep groove ball bearings with brass cages (available in select sizes) can deliver extra strength and durability in the most unrelenting conditions:
• Extreme shock loads
• High vibrations
• High forces due to acceleration
Quiet Running for Electric Motor Quality: Deep groove ball bearings are frequently used in electric motor applications to minimize vibration and noise. To meet our longstanding electric motor quality guidelines for deep groove ball bearings we designed in:
• Super finishing on raceways to reduce friction
• Preferred clearance designation (C3)
• Premium grease for high performance, low torque and
less noise
Deep groove ball bearings have lower vibration
levels than competitors during independent electric motor
application testing.

Bearings must be lubricated to minimize friction between balls and raceways, as well as between balls and cages. Lubricants also help to protect the bearings from corrosion and, in some cases, to dissipate heat.
  open ball bearings, as well as single-sealed/shielded bearings, are supplied with rust preventive (RP) covering all bearing surfaces. For such bearings, the end user selects and applies the desired lubrication type and quantity as required by the application.
  double-sealed and double-shielded deep groove ball bearings are factory pre-lubricated with water-resistant grease chosen for chemical and mechanical stability. The standard grease preferred by   for deep groove ball bearings is Mobil Polyrex EM. This is a mineral-oil based, advanced polyurea-thickened grease that maintains proper lubrication for a wide range of operating temperatures from -29° C to 177°  C. Mobil Polyrex EM provides protection against rust and corrosion, and additional protection under mild salt-water wash conditions. This grease also is widely preferred in electric
motor applications. The standard factory grease fill is 30 to 50 percent for most   double-sealed/shielded ball bearings. This accommodates most applications. The type and amount of grease needed varies depending on operating conditions and bearing series. Most bearings can be filled with customer-specified greases upon request to meet specific application needs. Aside from Mobil Polyrex EM grease,   also offers a range of other proven and popular greases suitable for a wide range of applications.