bearing puller

Deep groove ball bearing with seals or shields

Single row deep groove ball bearings with seals or shields are particularly versatile, have low friction and are optimized for low noise and low vibration, which enables high rotational speeds. They accommodate radial and axial loads in both directions, are easy to mount, and require less maintenance than many other bearing types. The integral sealing can significantly prolong bearing service life because it keeps lubricant in the bearings and contaminants out.Integral sea

ling prolongs bearing service life

Simple, versatile and robust design

Low friction and high-speed capability

Accommodate radial and axial loads in both directions

Require little maintenance

Knowledge and introduction of bearings    :                                                                                                 

A bearing puller is a specialized tool used to remove bearings from a rotating machine shaft or from a blind bearing hole. These tools are essential in various applications, such as removing a caged set of ball or tapered bearings from a rotating shaft, commonly found in automotive transmissions. Here's a detailed introduction to bearing pullers:

Types of Bearing Pullers

1. Bearing Splitter Plates: These are considered the safest type of bearing pullers. Technically, they are pushers because they use wedges to push and pop the bearings off the shaft. They consist of two half plates held together by two long, wide diameter, heavy-duty screws. As the plates are tightened, the tool wedges into and applies upward thrust on the inner race of the bearing.

2. Two and Three Arm Bearing Pullers: These are the most common types of bearing pullers, used for pulling gears or bearings. The arms have fingers that bend in to get behind the bearing to its race. The center screw of the puller is torqued to push on the top of the shaft and apply upward thrust to the bearing’s race. The arms and fingers are interchangeable to accommodate various bearing and shaft sizes and lengths.

3. Internal Bearing Puller: Designed to remove bearings that are recessed within a housing or machine, where traditional pullers cannot reach. This specialized equipment features a unique mechanism where the pulling arms slide through the center of the bearing, expand behind it, and then retract to grip the bearing securely from the inside.

How Bearing Pullers Work

Bearing pullers work by applying a controlled force to the bearing to be removed. The force is typically applied to the inner race of the bearing, which is firmly set on the shaft, while the outer race is less secured to the bearing assembly. This controlled force ensures the bearing is extracted without causing damage to the surrounding area.

Applications

Bearing pullers are used in a variety of applications, including:

• Removing bearings from automotive transmissions.

• Extracting bearings in industrial machinery where access is limited.

• Servicing small fractional horsepower motors and fishing reels.

Advantages of Bearing Pullers

• Safety: Especially with bearing splitter plates, as they push the bearings off rather than pulling, reducing the risk of damage.

• Versatility: The interchangeable arms and fingers of two and three-arm pullers allow for a wide range of applications.

• Efficiency: They save significant amounts of time compared to manual removal methods.

Considerations

When using a bearing puller, it's important to ensure that the tool is suitable for the bearing and shaft size, and that there is enough clearance behind the bearing to prevent damage. For instance, SKF specifies a minimum gap of 3mm must be observed behind the bearing to prevent damage when using their TMIC and TMIP series of bearing extractors. Insufficient clearance can lead to damage to the bearing or the housing immediately behind the bearing.

In summary, bearing pullers are indispensable tools for the maintenance and repair of machinery and vehicles, providing a safe, efficient, and controlled method for bearing removal.

For further details on this product please directly contact our sales department under shh@dmsw.com 

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