WON Super Ball Bushing SB Bearing

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1. 27 times longer service life
(3 times more load capacity)
WON Super Ball Bushing has about 3 times more dynamic load rating capacity than a general ball bushing with the same specifications. Therefore, its travel life is 27 times longer.
The plate of a super ball bushing is made of special steel with heat treatment. The precisely polished raceway of a ball is designed to be a few larger than the diameter of the ball in order to be stable for rolling motion of the ball and high load.
The 0.5° self-aligning function helps to make even distribution of ball load and to prevent partial intensive pressure that causes a shortened service life.

2. 0.5° Self-aligning
The outer side of the plate of WON Super Ball Bushing is curved so as to have 0.5° self-aligning function in the direction of shaft length. This function helps to absorb the increased pressure between the corner of 2 ball bushings and a shaft, which is caused by inconsistence between the center lines of the ball bushing and the shaft and thereby to distribute evenly load on each ball.
In addition, it helps to make a ball easily come in and out of the load-carrying area and thus supports smooth running.
(It is recommended to design a system composed of two shafts, each of which has two ball bushings.)

3. Compatibility
WON Super Ball Bushing is classified into Asia Series (SB) and Europe Series (SBE). SB Series has compatibility, since its installation dimensions are equal to those of general ball bushing products used domestically.

4. Fast speed and acceleration
A super ball bushing supports 3 m/sec of velocity and 150 m/sec² of acceleration without shortening its service life.

5. Easy adjustment of gap
When the bearing plate in the radial direction is installed in the housing making it possible to adjust clearance, it is easy to adjust a gap in the radial direction in order for precise travel without runout.
Zero gap adjustment
After WON Super Ball Bushing is installed in the housing supporting clearance adjustment, insert a shaft. Adjust the gap with an adjustment screw until you feel a tiny resistance at the time of turning the shaft.
Preload
To apply preload, set a shaft, which is smaller as many as a preload level (δ) than the shaft (diameter: d) to be used, to zero gap.

6. Reduction in installation cost
The self-aligning function of a super ball bushing helps to absorb inaccurate processing or inaccuracy of installation and thus to drive smoothly. Therefore, it saves installation time and cost.

7. Smooth driving
The self-aligning function makes it easy for a ball to enter in the load-carrying area. Since the outer sleeve and retainer are made of light and anti-wear polyamide, it supports smooth driving with low inertial force and noise.
In the condition of oil lubrication without any seal, the maximum coefficient of friction is 0.001.

8. Available temperature
If a super ball bushing is used at above 100°C, it shortens its service life.