When assembling a bearing, the most basic requirement is to make the added axial force act directly on the end face of the ring of the installed bearing (when installed on a shaft, the added axial force must act directly on the inner ring. When it is on the hole, the added force should act directly on the outer ring). Try not to affect the rolling elements. Assembly methods include hammering, press assembly, hot assembly, freezing assembly, etc.

1. Hammering method

Use a hammer to pad the copper rod and some softer materials before hammering. Be careful not to let foreign matter such as copper dust fall into the bearing raceway. Do not directly use a hammer or punch to directly hit the inner and outer rings of the bearing to avoid affecting the bearing's performance. Fitting accuracy may cause bearing damage.

2. Screw press or hydraulic press assembly method

For bearings with larger interference tolerances, they can be assembled using a screw press or hydraulic press. Before pressing, the shaft and bearing should be leveled and applied with a little lubricating oil. The pressing speed should not be too fast. After the bearing is in place, the pressure should be removed quickly to prevent damage to the bearing or shaft.

3. Hot loading method

The hot mounting method is to place the bearing in oil and heat it to 80°C-100°C to expand the inner hole of the bearing and then fit it onto the shaft, which can prevent the shaft and bearing from being damaged. The hot-fitting method is not applicable to bearings with dust covers and sealing rings that are already filled with grease.

Bearing Material	SUJ2	Brand	Domestic
Functions	Dust coverless type	Bearing Size	Medium/small size

Deep Groove Ball Bearing No Dust Cover