Radial Internal Play
C4 Internal Play (Higher than C3)
Precision
Standard Precision
Lubrication
Standard Lubrication
Heat Stabilization
No Heat Stabilization - Temperatures up to 120 °C
Special Treatment
No Special Treatment
Suffix description
MAMachined Brass Cage, Outer Ring Guided
C4Bearing Internal Clearance Greater Than C3
Product description
The 618/630MA/C4 SKF is a narrow, single-row deep groove ball bearing with an inner diameter of no less than 630 mm. This bearing has a very high radial load capacity. It can also accommodate limited axial loads in both directions. This open bearing is suitable for heavy industrial applications, typically involving an oil bath or grease chamber. As the machine runs, re-lubrication occurs automatically, ensuring a longer lifespan.
The 618/630MA/C4 SKF is equipped with a brass cage. It is robust and resistant to shocks, vibrations, and high temperatures. Additionally, brass is softer than steel or cast iron. In the rare event that the bearing seizes, damage to iron machine components, such as gears, is minimised. Narrow deep groove ball bearings with an inner diameter of at least 500 mm are rarely used as the main bearing. They are typically used as an additional support point in heavy drives or shaft suspensions.
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