A bearing puller is an instrument that is used to extract bearing sets from a spinning machine shaft or a blind bearing hole. The most typical use is to remove a caged set of ball or tapered bearings from a spinning shaft, as in an automobile transmission. Because these instruments are constructed of high-grade steel, they are tougher than the items they are used on. They are often operated by hand, with a handle on the turn screw or a male hex end to fit a drive socket. Some bearing pullers are hydraulically powered, with a hydraulically powered piston pressing against the end of the shaft where the bearing is located.
Bearing pullers are also available in small sizes for removing small millimeter-wide bearings in fractional horsepower motors and fishing reels. There are also arms with extensions that allow the user to pull in the inner race. It is better to drive from the inner race since it is securely attached to the shaft, whereas the outer race is not as well secured to the rest of the bearing assembly.
Bearing Pullers' Primary Components
The following are some of the primary components of the pullers assembly:
- Bearing puller forcing screw – A forcing screw is a long and finely threaded screw that is turned in the same direction as the shaft. When force is given to the screw, force is transmitted to the components that are being removed.
- The hexagonal head of the bearing puller is linked to the forcing screw. It is secured with a socket wrench to allow for easy rotation.
- Bearing pullers with reversible claw legs — legs enable for internal and external pulls.
- Cross arms of bearing pullers – the cross arms connect the legs to the forcing screw.
Bearing Puller Selection Guide
Bearing pullers are designed for specific uses. As a result, you must select the appropriate bearing puller for your removal application. We’ve compiled a list of crucial factors to consider when purchasing a bearing puller to assist you in your decision-making process.
Think about your type of application
When purchasing a bearing puller, you should examine the application for which you are purchasing this equipment. It is not worthwhile to purchase a bearing puller that is not appropriate for your usage. A separate sort of bearing puller is required to remove the bearing from the vehicle or to pull something off a shaft. To achieve the required results, you must first determine the type of application and then select the bearing puller type.
Consider purchasing a jaw-type, slide hammer, or push-puller bearing puller to remove the object from the shaft. Consider purchasing an internal bearing puller with a sliding hammer to remove the object from the hole.
Types of Bearing Pullers
Bearing splitter plates, two and three arm bearing pullers, and internal bearing pullers are all examples of bearing pullers
Bearing Splitter Plates
Bearing splitter plates are the most secure type of bearing puller. These are technically pushers rather than pullers because they use wedges to push and pop the bearings of the shaft. These are made up of two half plates that are fastened together by two long, wide-diameter, heavy-duty screws with nuts on all four ends. The plates have a hole in the centre and are ground downwards towards the hole in the centre so that as you tighten the two plates together on the outside, the tool wedges into and puts upward thrust on the bearing’s inner race. These operate best when there is a gear or hub right behind the bearing, holding the tool in place on one end while the upward force pushes on the inner bearing race.
These are the most typical bearing pullers, and they can be used to pull gears or bearings. The ends of the arms feature fingers that bend in to get behind the bearing as it races. The puller’s centre screw is torqued so that it pulls on the top of the shaft and applies upward thrust to the bearing’s race. Because the arms and fingers are replaceable, the same puller can handle a wide range of bearing and shaft sizes and lengths.
Internal Bearing Puller
Internal bearing pullers are designed to remove a bearing set, bushing, or a simple bronze sleeve from a blind hole. Blind holes make it impossible to push out the sleeve or bearing with a punch. Internal bearing pullers are similar to tiny dent pullers in that they use a sliding hammer along the shaft to deliver upward thrust and shock to the bearing. The collet, which fits into the bearing at the puller shaft’s tip, is extendable. The collet can be locked inside the bearing or bushing by rotating it tighter on the puller shaft. The tool’s hammer will transmit the upward thrust to the bushing and pull it out of its hole if you move the slide hammer away from the bearing and up towards the user.
These are the various types of bearing pullers. You can use any of these three bearing pullers for your requirements.
Bearing puller sizes
This is another important factor to consider when purchasing bearing pullers. You should make sure that the bearing puller you buy is appropriate for the job. You should determine the size and number of jaws required for your job. Check that the puller is providing enough pressure to the bearing to pull it out and that it is the correct size for the job.
Consider the need for force.
When you’ve decided your required size, ensure that the bearing puller can provide you with the necessary force to draw the bearing. If you are unable to obtain the specific products, you may select a larger size product. By doing so, you can improve usability.
A bearing puller is a necessary tool for any technician. It should be of good quality and long-lasting to provide excellent performance. However, choosing the best bearing puller is not as simple as you may believe. The product reviews on this page can provide you with information regarding bearing pullers. You can also choose any product if it is appropriate for your application. We hope that the purchase guide will assist you in selecting the appropriate bearing pullers for your use.