During the operation of automobiles or other complex technical devices, metal corrosion, mutual diffusion, oil aging, and sticking occur at the points of contact between various mechanisms, which significantly complicate their separation if necessary. According to calculations, for pressing out it is necessary to spend almost 30% more effort than for pressing. In this case, the probability of damage to dismantled devices is high. For quick and accurate separation of the necessary parts, special technical devices have been developed, which will be discussed in the review.
Content
Puller - a technical device for dismantling elements installed with an interference fit, without applying excessive force and destructive impact on them.
The use ensures the safety of the removed components, improves the quality of work performed and labor productivity. You can do without drilling additional holes, threading, welding new parts, etc.
Requirements:
The main element is the central bolt that ensures the operation of the device.
In the direction of movement of the bolt, the part is mounted in the right place or, conversely, removed from it.
1. Universal.
2. Special for:
1. Mechanical:
Due to the simplicity of design, efficiency and reliability, as well as affordability, they are the most common. It is possible to create forces up to several tons. The design includes a threaded center shank, two to three hooks or a 2/3 claw combination to make it easy to choose for a particular job. They feature a quick change of grip points and a spring-loaded effect that makes it easier to pull.
2. Hydraulic.
In addition to the advantages of mechanical pullers, they are equipped with a built-in hydraulic cylinder capable of reaching forces of several tens of tons. They are used when performing heavy and complex work. Heavy-duty alloy steel is used for manufacturing, and a safety valve in the hydraulic system protects against overloads. Depth and accuracy of centering are regulated by special devices.
3. Pneumatic.
4. Combined.
5. Electrical.
1. Moving.
Equipped with two grippers that move along a beam with a threaded hole. Used to remove bearings. The appointment is changed by rearranging the grips with a solution within the range of up to 80 centimeters. Displacement of the part is not allowed by the stops of the bolt.
2. Conical.
Used to remove bearings. Three paws prevent load asymmetry. Centering is automatic.
3. Rotary.
The design can be very different - with a three-sided or two-sided grip. The paws are placed on the attachment points of the device with a gripping width of five to seven centimeters. Locking with bolts. They are used for dismantling battery cable lugs or bearings.
4. With separator.
The tool is placed under the part to be removed and both halves are brought together with bolts. Then the pulling part is connected. The cage position determines the adjustment of the side nuts. The power bolt is installed on the axis of the dismantled element.
5. Universal.
1. Force:
2. Stroke determined by the reach and length of the main bolt.
3. Dimensions - dimensions of the stop.
4. Solution range.
Popular models and novelties can be purchased in supermarket departments and stores of building materials and tools, as well as in shopping centers selling spare parts for cars and other equipment. There you can check and hold in your hands inexpensive budget pullers offered by the best manufacturers, and qualified consultants will give competent advice and recommendations - how to choose which company is better, how much a suitable model costs, what to look for in order to avoid mistakes when choosing, than mechanical pullers differ from hydraulic pullers.
In addition, it is easy to order a suitable product online in an online store, for example, using E-Catalog or Yandex.Market aggregators. It presents the best models in the car, as well as specifications, descriptions, features, photos and customer reviews.
Universal pullers in Moscow can be bought:
The rating of quality instruments was compiled according to the opinion of buyers in the largest Internet aggregators. The popularity of models is determined by simplicity, reliability, safety, versatility and longevity.
The review presents a rating of the best models among mechanical and hydraulic devices on the market.
Brand - AIST (Russia).
Country of origin - Taiwan.
Universal model for quick and easy demolition work. It is equipped with three paws with fixing of captures. For manufacturing, high-strength hardened carbon steel with a high working resource is used. The maximum allowable load is two tons. Working stroke - 8 cm, stop height - 0.6 cm, maximum opening - 12 centimeters. The warranty period is 12 months.
Weight 1.3 kg. The cost is 4152-5919 rubles.
Brand - Sparta (Germany).
The country of origin is China.
Universal model made in China with three double-sided swivel paws 30 cm long. Provides a secure grip with quick and easy installation. The possibilities are extended by the use of three paws in the design. Departure changes when rearranged by 1.5 times. Designed for fast and accurate extraction of bushings, rings and bearings with minimal effort, regardless of location. Made from 45 carbon steel. Main bolt with hex head.
The warranty period is up to 12 months. Weight - 2.35 kg. Price - from 1385 to 1763 rubles.
Brand - Airline (Russia).
The country of origin is China.
Universal model made in China to dismantle automotive ball joints. Working range from 2.0 to 5.0 centimeters. Made of chrome molybdenum and tool steel S45C, characterized by high strength. The weight of the device is 1.15 kilograms. The warranty period is 12 months.
Price: from 988 to 1426 rubles.
Brand - Jonnesway (Taiwan).
Country of origin - Taiwan.
Multifunctional set of devices for a car for dismantling and removal work at service stations and small car repair shops. It is used when tightening medium-loaded parts with threaded connections from various mechanisms of a car, including tie rod bearings, an elastic coupling. The fixing elements are bolts, presented in a wide range of sizes. If necessary, inch bolts are replaced with metric bolts with a hardness of not more than 8.8. Solution range 3.0 - 12.0 centimeters. The set is packed into an ergonomic case with separate lodgements for each device.
The manufacturer provides a lifetime warranty. Weight - 2.72 kg. The average price is 4450 rubles.
Brand - AvtoDelo (Russia).
The country of origin is China.
Universal three-arm model for extracting wheels, gears, pulleys and bearings by external or internal methods. For manufacturing, tool steel is used, which provides resistance to deformation and mechanical damage. Solution range from 1.5 to 5.0 centimeters. For convenience of use it is equipped with the central screw with a support. The surface is coated with a special compound to prevent corrosion. The weight of the device is 880 g, in the package - 900 grams.
Offered at a price of 1074 to 1187 rubles.
Brand - Mastak (Russia).
Country of origin - Taiwan.
Hydraulic model for extracting bearings from the shaft and pressing them out of the cage at service stations, car workshops and car services. The maximum applied force is 4 tons. The package includes three items, including a hydraulic pump, a 1.5 meter hose, a cylinder and the device itself. For manufacturing, tool steel with an oxidized coating is used. The cylinder and pump are filled with hydraulic oil. All items are placed in a metal box.The maximum depth of the working space is 18.5 cm, the maximum width is 25.5 cm. The total weight is 18 kilograms.
Price - 32900 rubles.
Brand - Licota (USA).
Country of origin - Taiwan.
25-piece universal tool set for professional use in workshops and industrial plants. Includes separator and grips for quick extraction of bushings, pulleys, bearings, planted with an interference fit. It is applied to use on cargo and commercial transport. The design and structural elements - the thrust rod and paws - are made of high-strength alloy steel, which provides reliable grip. Long service life is ensured by anti-corrosion coating. The set is housed in a durable metal case that protects items from mechanical and chemical damage. There are four stem extensions, two stops for the separator puller, two stop extensions. Equipped with several traverses - H-shaped, 3 and 2 sides.
The maximum depth is 16 cm, the stroke of the rod is 6 cm. The range of diameters is from 3.5 to 16 centimeters. Weight 17 kg. Price - 18990 rubles.
Brand - Stankoimport (Russia).
Country of origin - Taiwan.
Professional hydraulic model for extracting elements of trucks and cars with a powerful force of 10 tons. Reliable three-arm design ensures the removal of gears, pulleys and bearings, including on agricultural machinery. If necessary, an extension rod is applied to the central rod of the cylinder. A handy case is used for storage. Weight - 4.9 kg.
Price - 11990 rubles.
Brand - Jonnesway (Taiwan).
Country of origin - Taiwan.
19-piece universal set for removing interference fit parts. Made from high strength SCM415 carbon steel. Equipped with movable paws, changeable in flight. The universal traverse allows the use of two or three grippers. Traction is transmitted by a hydraulic cylinder 3.77 cm in diameter and 16 cm long. The devices are housed in an ergonomic plastic case with a handle for easy storage and transportation. Weight - 4.98 kg.
Offered at a price of 12220 rubles.
Brand - AIST (Russia)
Country of origin - Taiwan.
Universal six-position multifunctional screw model for dismounting bearings.The maximum range is from 10 to 24 cm in width and 15 cm in depth. Hydraulic cylinder with a diameter of 3.77 cm and a length of 16 cm. Load capacity 10 tons. Equipped with three combined grips with six ties, six sets of fasteners (nuts, bolts). It has a universal traverse and extensions for the pusher of three and five centimeters for careful extraction of parts. The whole set is housed in an ergonomic plastic case.
Price - 10815 rubles.
On the Internet, you can find a lot of practical advice on how to make a suitable tool for dismantling mechanisms of various sizes yourself at home. Step by step instructions include the following steps:
1. Prepare materials and tools:
2. Cut off a piece of pipe with the desired parameters.
3. Mark future parts on the sheet, circle the bearing and pipe.
4. Cut with a grinder, grind to the exact parameters.
5. Drill holes for the bolts in the obtained washers.
6. The simplest puller is ready!
When working with a universal puller that applies a power measured in tons, precautions must be taken.
The most important thing is operator safety!
Enjoy the shopping! Take care of yourself and your loved ones!