Bearing puller. Puller. Bearing. Types of pullers, description, purpose. Screw, made from a corner

Such an element as a bearing is used in many units and mechanisms. It can also be found on the car. For example, this or a hub element. In any case, a puller is required to dismantle it. The bearing is very tight. It is extremely difficult to extract it with improvised means. Therefore, today we will consider what bearing pullers are, their dimensions and design features.

Device

The main element in the design of this element is the central bolt. It is due to him that the puller works. The bearing is thus squeezed out of the workplace or, conversely, pressed in (depending on which way to turn the central bolt). Some devices are equipped with a hydraulic cylinder (for example, bearings, as in the photo below).

Also in the design there are grips. They are of two varieties:

• Grippers that are engaged with the object to be retrieved using a special tool. They work independently of the action of the bolt.
• Pressing the part due to the force of the bolt or

The material from which the puller is made

The bearing is a part that is quite difficult to remove. Therefore, puller manufacturers use only high-strength alloyed materials. Responsible nodes in these elements are formed by forging. As for power bolts, they have a higher strength than those used in conventional threaded connections.

Kinds

There are several types of these tools. All of them differ in the type of capture. He can be:

• Sliding.
• Rotary.
• conical.
• With separator.
• Universal.

With regard to dimensions, the inner bearing puller can have a different diameter. On average - from 28 to 200 millimeters. The height of the foot is from 35 to 60 millimeters. Bolt head size - from 9 to 22 millimeters.

sliding puller

It is quite easy to remove the bearing with such a tool. Such a puller has two grippers that move freely along the beam. In the middle of the latter there is a threaded hole. In the upper part, the bolts can serve as clamps for the grips.

It can be a puller for internal bearings or external ones. To change its purpose, it is enough to rearrange the grips. By the way, their maximum solution is from 10 to 80 centimeters. The device has stops for a power bolt. This prevents the bearing from moving. The set of sliding pullers includes grippers of different lengths. Also the tool is completed with replaceable tips. Usually they have the same dimensions (they serve as a substitute in case of failure of the first element).

With swivel grips

They have different design. The grips are secured with bolts. For which vehicles is this bearing puller used? VAZ, MAZ, GAZ, Mercedes - this is an incomplete list of cars on which this tool can be used.

The puller has stops with double-sided grip. There are tools with a tripartite. There are 4 fixing points on the body of the device. Bearing pullers are installed on them. The grip width of the device is from 5 to 7 centimeters. Used to extract bearings small size, including for dismantling the tip of the battery wires. It can be equipped with a percussion mechanism.

With conical gripper

These tools have 3 jaws and are used in situations where it is required to eliminate load imbalance when dismounting a bearing. Often this type of hydraulic bearing puller is sold.

Centering of captures happens automatically. Also in the design there is a conical nut, which is manually wrapped when installing the tool. On some models it is spring loaded. It has a limited range of uses. Turning the clamps here will no longer work.

With separator

These tools are highly reliable. The element is based on a separator. It is installed under the removed bearing. Both halves of the cage are bolted together for a more secure grip. After that, the pulling part is connected to the tool.

Its side nuts are adjustable according to the position of the cage. The power bolt is driven onto the axis of the part to be removed. The tool can be used in combination with a sliding puller. However, when working with two mechanisms, it is required to monitor the safety of the bolt threads.

Universal

Pullers universal for bearings are used most often. They also extract other mechanisms. The design is based on a power bolt made of alloy steel. By rotating it, the master creates a dismantling force that is applied to the reference point. Through the central body of the tool, this force is transmitted to the clamps. Thus, the part is pulled out or pressed into place. Universal pullers are used for both internal and external bearings.

Price

The cost may vary depending on the type, as well as the set of tools that is included in the kit.

The cheapest are two- and three-jaw sliding pullers of a mechanical type. Their price ranges from 500 to 1 thousand rubles. Hydraulic devices- the most expensive. They are offered on the market at a price of 25 thousand rubles. The cost of universal mechanical solutions is around 10 thousand rubles. The kit includes a set of mandrels.

Options

To choose the right bearing puller, you need to know what parameters it must meet. When buying, you should pay attention to the following points:

• Maximum permissible load. This parameter is determined by the strength of the central body of the puller and the power bolt. For mechanical tools given parameter ranges from 1 to 4 tons. Hydraulic pullers have a force of about 20 tons (but they also have a corresponding price). However, for the dismantling of elements such as a wheel bearing, mechanical tools are sufficient.
• Working move. It depends on the overhang of the power bolt and the length of the grips.
• The dimensions of the puller legs (in particular, the width and height of the stop).
• Minimum and maximum grip opening.

Primitive do-it-yourself puller

This tool can be made independently. Used as the main element steel pipe. Its diameter should be slightly larger than that of the clip. So, with the help of a grinder, we cut off a piece of pipe desired length. It depends on the size of the screw. Next, by welding, we connect the C-shaped washer to the cut out part of the pipe. On the other hand, a nut is welded with internal thread. It must match the parameters of your screw. This type of puller is the easiest to manufacture. However, it will only fit a specific bearing diameter.

Making a universal tool

Such a puller will fit different diameter elements. So, we need to make paws from a 10 mm steel sheet. It is better to use pre-prepared templates. They can be made on cardboard or paper, then marked on metal sheet and cut with a grinder.

Then you need to pick up the bolt. We sharpen it under a cone. Six lugs with holes are welded to the nut. Our paws will be attached to the latter. Ears are cut out of metal with a thickness of 5 millimeters. The ears are welded to the nut in assembled form. Next, the bolts are unscrewed and the joints of the legs are finally welded. At this stage, the assembly of the device is completed. You can begin to fully use the tool.

Conclusion

So, we found out what types of pullers for bearings are. The most common types are universal solutions mechanical type. They can be used to extract any bearings and pulleys. Puller - highly useful thing in the economy. Especially if you own a car. With this tool, you can even perform such a complex operation as replacing a wheel bearing. In services, the cost of this service is from 3 thousand rubles.

When repairing electric motors, in addition to open-end wrenches and a set of heads, you must definitely have in your arsenal several pullers to tighten the bearings.

One universal is simply not enough. If you have electric motors from 1 kW to 100 kW on your site, then you need to have 2-3.

I have two bearing pullers in my arsenal. Now there is a large selection of pullers on the markets, and you can buy them. But if there is material, a lathe, gas and electric welding and a desire, then the puller can be made with your own hands. And I assure you, it will serve you even more than a dozen years.

It is imperative to make three-arm pullers: they are the most convenient. I will also indicate the dimensions of my pullers, which have long been tested during repairs. Let's start with a small one, with which you can remove bearings from 202 to 308 sizes, large 317 and more. We'll need sheet metal 10 mm thick and

metal round timber with a diameter of 30 mm (for a large one - metal 15 mm and round timber with a diameter of 50 mm).

First of all, we make a drawing (pattern) of the legs of the puller. We make the length of the legs 200 mm (at the end of the article in PDF format I will post patterns for the legs of small and large pullers). Next, on the sheet metal on the pattern, we apply a drawing. It is necessary to cut the paws with a gas cutter (propane and oxygen). After cutting, we process the blanks on a large emery.

Gradually bring the size of the three paws to the same. There is no need to achieve too ideal dimensions, a difference of 1 mm will not make a negative role in the design. When the paws are made and fitted, in the upper part we drill two holes (for a small expansion of possibilities) with a diameter of 8 or 10 mm bolts (for a large 12 or 14 mm 3 holes) for attaching the paw to the core of the puller. We do the same with the two remaining paws. We drill holes in them along the first foot, using it as a template. Here we must try to disagree in size to prevent the capture of the bearing being removed at the same time. Here is a brief about the manufacture of puller legs.

The next detail is the core. For the core on a small puller, we need round metal with a diameter of 30 mm and a length of 35 mm (for a large one, respectively, 50x45 mm). In the workpiece, we drill a hole for a thread of 16 mm (for a large puller in its workpiece, a hole for a diameter of 30 mm) and cut the thread, preferably with a fine pitch. In the prepared part for the core, we apply markings, three marks at 120 degrees. And to these places we weld two by electric welding on the marks of the holder of the legs (the distance between the holders should be as thick as the foot). I think there is no need to describe in detail how to prepare them, since there is no need to adhere to any strict rules and sizes. After welding work we process this detail on a large emery. Now, having tried on the paw, we drill holes in the holders. Holes should be drilled off center so that the installed tab has good side play to grip larger bearings.

And the third part of our puller is the screw. On the first puller we make it 350 mm long, the thread length is 280 mm, on the second - the length is 500 mm, for the thread 420 mm. Next on lathe we process blanks and cut threads. At the top of the screw, where there is no thread, we drill through holes with a slight offset in height and perpendicular to each other. These are holes for mounting or a collar. Diameter is up to you. The beginning of the screw can be narrowed in diameter for a small distance. I do not describe the details. Everything can be seen in the photos.

We made these pullers with a locksmith over 12 years ago. I have had no problems all these years with the removal of bearings and half-couplings. And most importantly, the quality turned out to be Soviet-era. like this essential tool can be easily done by hand.

How to understand that the wheel bearing is out of order? By sound! The main symptom is a hum that gets worse with acceleration. If it occurs only occasionally, then the bearing has just begun to break. A constant suspicious sound with increasing load means that this part of the car requires immediate replacement. In any case, you will need a bearing puller to carry out repairs. You can buy it or make it yourself.

How a puller makes life easier for a car owner

Using this tool, you can dismantle bearings, bushings, pulleys, flanges and other components, remove or fix rings and gears, and repair chassis elements. It greatly simplifies the process Maintenance and repair different parts vehicle. Using the correct puller, you can quickly and easily replace a damaged element without risk of damage to the machine elements connected to it. In addition, the tool can be used to work on hard-to-reach parts of the car, in a convenient position.

Products can have a different design, but the most common is the following - several gripping paws, which are in the form of hooks, and a threaded rod between them. Thanks to this structure, you can easily grab the required element and press the bearing out of it.

Kinds

The tools are divided into two groups.

• Hydraulic. During their work, hydraulic traction is used, the removal and landing are carried out in a semi-automatic mode. The main part of such a puller is a hydraulic nut, the inner cavity of which presses on a special piston. That, in turn, transfers the force to desired part. The hydraulic model is in demand among owners of trucks and other large vehicles - with its help, you can easily remove the most massive internal parts.

• Mechanical. They operate from the muscular strength of a person, they are in demand for the installation / dismantling of wheel bearings. There are two-grip, three-grip and internal. Double grip - the simplest. They are used where maximum process control is required. Three-jaws are equipped with three paws and are used to work with the front hub and generator. Internal options useful for removing ball and needle roller bearings, in addition, they can be used to dismantle various brass couplings.

Bearing pullers may have different sizes, but the most popular are universal. Their parameters can be adjusted manually, adjusting to any diameter.

You can do it with your own hands different instruments, but it is best to make a universal three-grip version - it is convenient to use.

We make a universal three-armor with our own hands

To make a universal three-jaw puller designed to work with bearings ranging in size from 202 to 308, you will need:

• sheet metal (10 mm wide);
• metal-round timber with a diameter of 30 mm.

If you are planning to shoot big bearings, take sheet metal with a width of 15 mm and a round timber with a diameter of 30 mm.

An easy way to make a homemade pickup device

This option is easier to perform, but the product will not be so convenient. You will need the following tools and materials:

• steel pipe, the inner diameter of which will be larger diameter bearing;
• metal plate with a thickness of more than 5 mm;
• Bulgarian;
• a stud with a nut or a bolt with a long thread;
• a few nuts.

1. Cut off a piece of pipe of the desired parameters.

   Cut off part of the pipe

2. We mark all the necessary elements on a metal sheet, circle the pipe and the bearing.

   Laying out future details

3. We cut out the details with a grinder, grind them to match the exact parameters.

   Cut out details

4. We drill holes for the bolt in the resulting washers.

   Drilling holes for bolts

Very cool and useful item. Puller for bearings. Useful pipe, iron plate, large washer, bolt, nut.

To begin with, we mark on the pipe the size that needs to be sawn off. Weld the washer to the resulting segment. We put the nut exactly on the hole and weld it. Let's clean the bumps with a grinder.
Measure 1.5 centimeters, make a cut. On the other hand, it's the same. Cut off two small pieces from the plate. They will be inserted into two slots. Got a puller.

How does this tool work? We put on a bearing. We go behind him two records. We turn the bolt. It rests on the shaft and pulls the bearing off it. With this tool, you can easily remove it from the generator and electric motor. The outer diameter of the part must not exceed inner size pipes.

Video AVTO CLASS.

Second idea

Airat Valiakhmetov, the host of the eponymous channel on youtube, developed his own original idea. In the store, such tools are not cheap. So I decided to do it myself. I took a metal strip 30 wide, 4 mm thick. Cut it into strips. Welded. Plates. Hooks to grip the bearing. Two cuts are made with a grinder. Two nuts are inserted and welded on. I took the worm from an old Soviet clamp. Hardened steel. To make the tool universal, I made 4 holes on each side. Can be set to any width. If necessary, the paws are pulled out, turned over to the other side. You can pull out the bearing.