Different Types of Pullers and Its Key Features

There are many types of pullers available to choose from. By choosing the one that best suits your application, you will get the job done safely, efficiently and without causing harm. Hydraulic Puller Set are available in different forms as followings:

 

1.     Two Jaw and Three Jaw Pullers

The most common types of pullers are available in 3-jaw or 2-jaw configurations. 3-jaw pullers are commonly used because the extra jaw helps distribute the force more evenly. But when access is limited, a two-jaw puller can be used, provided it is used carefully.

 

2.     Mechanical and Hydraulic Pullers

Mechanical pullers work by rotating a beam that moves the center screw/force screw toward the shaft.

Hydraulic pullers include an integrated hydraulic cylinder that is powered by a pump to apply the required force. The piston provides a more efficient and safer, torsion-free direct drive application.

 

3.     Internal Pullers

Used to remove axle-mounted parts where axle support is not available. An internal puller is used with an attached sliding hammer that allows the application of high impact force.

 

The features to consider while choosing a puller are: -

 

1.    Two or three jaws: Where space permits, it is best to use a three-jaw puller. It is safer and easier to use.

 

2.     Hydraulic vs mechanical: Hydraulic pullers are easier to operate than their mechanical counterparts, but you will need a pump, hose, and pressure gauge. Depending on the size of the extractor, the pump can be operated manually, with air or with electricity.

 

3.   Reach: Reach is the distance available between the pulling surface of the jaw and the head of the extractor jaw. This distance varies and decreases with the opening of the jaws. In addition, the internal profile of the jaws allows for the extraction of deeper components.

 

4.   Synchronous and Self-Centering Jaws: The simultaneous retraction function of this locking grip allows all jaws to move simultaneously. The benefits of this feature are that the spindle stays centered on the shaft, misalignment is avoided, and setup requires fewer people and takes less time.

 

5.  Locking Mechanism: The locking mechanism helps prevent the jaws from falling out of the application during the extraction process. Rotating the pull handle locks the jaws into the app, allowing the shaft-mounted component to be released when the shaft is rotated.

 

6.     Spread: The spread is simply the diameter that the jaws extend. Usually up to 25 inches

 

7.    Tonnage: Pullers are available in a wide range of capacities. Most models available range from 2 to 64 imperial tons. These large and heavy products are installed on a trolley with an onboard winch and a hydraulic pump.

 

8.    Buy Puller Sets: Pullers are available to buy individually or as part of a group. If you expect to do different pull jobs on a regular basis, consider buying a set. A typical set will include extractor, pump, hose and pressure gauge. The main puller assemblies include not only type puller, but also cross bearing puller, bearing spacer and bearing cup puller.

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