Features designs household hammers Bosch 2-20, 2-24, 2-26

most widespread among Russian professional builders got hammers Bosch, and among lovers of household model Bosch 2-20, 2-24, 2-26.Hammers not only work well, but also easy to repair.They can easily find any, the failed part.

The structures described drills incorporated the same principle to transmit the torque from the rotor to the shaft barrel percussion unit with simultaneous transmission of forward momentum in the tool.

Structurally drills performed by the same scheme, but some parts or components have their own characteristics.

If you know the specific differences between the models described rotary hammers Bosch, the disassembly and repair their own hands will not be difficult.

Along with the originals in the Russian market there are a large number of counterfeit instruments, including Bosch drills.
following describes the design features of the models and methods of disassembly and repair their own hands.

The principle of perforating the same, but the design features are different.

main parts used in these models, the Bosch rotary hammers, interchangeable.This applies to the mechanical and electrical assembly.

But there are sites and doing other than used parts.

To perform repairs perforator Bosch 2-20, 2-24, 2-26, need to know these differences.Knowledge of the design of each punch simplifies the process of repair, failures and finding their solutions.

Construction Bosch drills are so simple that you can perform simple repairs, almost with their hands, and replace any item without a service call.We must have the skills collector, have a basic knowledge of electrical engineering and to understand the principle of operation of the gun.

main differences in the designs of drills Bosch

When repairing the Bosch rotary hammer, you can not do without electricity and disassembly tool scheme of the model that are going to fix it.

Wiring diagrams drills Bosch 2-20, 2-24, 2-26 are virtually identical.Although some differences are inessential.

But mechanical units are equipped with details that differ with each other constructively.The main differences are collected in two locations: in the intermediate shaft and the shaft of the shock unit barrel.

greatest differences are presented in the construction of the intermediate shaft assembly "drunken bearing" in the switch mode.Non-critical features are present in the construction of the shock unit of the barrel, firing pin, firing pin.

begin with perforator Bosch 2-20.

scheme and design perforator Bosch 2-20

Repair Bosch 2-20 perforator is not able perpetrated without the knowledge of design tools.

operating principle of the perforator Bosch 2-20 is based on the transmission of torque from the position 3 of the rotor shaft to the shaft impactor poz.22 block through the intermediate shaft poz.824 simultaneously transmitting longitudinal momentum of the working tool.

rotor pos.3 transmits torque to the helical gear intermediate shaft poz.824.

helical gear mounted on the intermediate shaft and transmits the torque on the shaft.On the shaft is fixed drunk bearing that receives the torque through the clutch.Due to its design drunk bearing transmits the translational motion to the firing mechanism of the barrel cylinder.

The design of the intermediate shaft perforator Bosch 2-20

intermediate shaft perforator Bosch 2-20 consists of a rolling bearing unit (bearing drunk), a clutch, a large spur gear, a small spur gear.

most often manifested in the deterioration failure of the splines of the clutch, resulting in rotation of the gun cartridge dropouts in the presence of a shock pulse.

is corrected by replacing the clutch or restoring teeth clutch parts.

Design features perforator Bosch 2-24

Repair perforator Bosch 2-24 is best to start with an introduction to the scheme and design features to establish the instrument.The principle of operation is similar to the gun Bosch 2-24 operating principle perforator Bosch 2-20.

The torque is transmitted to the tool mounting shaft, together with the shock pulse transmission.At the gun, there are three modes of operation: hammer drilling, drilling without impact blow.

poz.803 Helical rotor gear transmits torque to the helical gear intermediate shaft poz.826.

The design of the intermediate shaft perforator Bosch 2-24

intermediate shaft perforator Bosch 2-24 consists of a rolling bearing assembly poz.830, clutch poz.823 clutch, shift key details.44 Most often comes down clutch.It worn teeth.Repair coupling is to correct meshing tooth profile and a coupling on the intermediate shaft.

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impact mechanism design of the barrel shaft

hitting unit of the barrel shaft for transmitting rotary pulse with simultaneous movement of the impactor.

Rotation is transmitted from the spur gear of the intermediate shaft to a large spur gear shaft poz.22 poz.821 barrel.

reciprocating movement is transmitted through the bearing poz.830 drunk, percussion piston poz.26, poz.27 peen, impact bolt pos.28 mounted on the chuck poz.756 drill.

design is a shaft, hollow on one side.On the shaft with the two sides set piece.

From the mounting cartridge is installed on the shaft spur gear poz.22 and fixed to the shaft by means of a roller poz.88 is pressed against the shaft shoulder poz.80 spring.Itself fixed spring retaining ring poz.85.

in the cavity of the shaft barrel percussion unit is inserted: the assembled shock bolt pos.28 and the percussion piston.The percussion piston is inserted poz.26 poz.27 striker to put on his new rubber ring poz.73.All rubber products are lubricated with the recommended lubricant.

Faults shaft

striking mechanism stem Due to the weakening of the spring force, loss of the fixing roller gear can rotate on the shaft.This manifests itself in failure torque with shock pulse presence.

Hammer hammer, but do not drill.

At deterioration of rubber products (O-rings) the punch ceases to work in the "chiseling".It happens gradually.Shot Power is weakening as wear rubber rings.The fact is that from a drunken bearing movement is transmitted to the percussion piston poz.26 in which the striker poz.27 creates air pressure acts on the percussion bolt pos.28.

Hammer drills, but do not hammer.

If the punch you exert great force, it could lead to the destruction of the shock bolts, jam striker in the shock piston.Such problems can be solved only by complete replacement of defective parts.For more information about troubleshooting perforator Bosch.

Design features perforator Bosch 2-26

Repair perforator Bosch 2-26 should begin with a review of features in the design of the instrument to establish.The principle of operation is similar to the gun Bosch 2-24 operating principle perforator Bosch 2-26.

Rotation is transmitted from the rotor shaft via the intermediate shaft to the barrel shaft impactor.At the same time fixed on the intermediate shaft bearing drunken passes at the percussion piston reciprocates.

At Punch has three modes of operation: hammer drilling, drilling without impact blow.

poz.803 Helical rotor gear transmits torque to the helical gear intermediate shaft poz.823.

intermediate shaft similar to the shaft in the construction of the perforator Bosch 2-24 and interchangeable parts himself and members of the intermediate shaft rotary hammers Bosch 2-24, 2-26.Instructions for disassembling the gun Bosch.

impact mechanism design of the barrel shaft

shaft barrel percussion unit is similar in design shaft perforator Bosch 2-24 trunk.To cause breakage failure of the same parts as in the punch Bosch 2-24.

striking mechanism stem shaft of the shaft rotary hammer features Bosch 2-26 that led most poz.22 spur gear fixed to the shaft by three pins poz.37, in contrast to the fixing roller in the punch Bosch 2-26.

performing percussion unit disassembly tree trunk perforator Bosch 2-26, look for a way to fix the gears.Before removing the gear, it is necessary to remove the three pins.Procedure for proper assembly perforator Bosch.

Conclusions:

• Knowledge of the differences between the listed models of Bosch drills allow you to quickly perform a disassembly tool, to replace faulty parts.To do this, you do not need to contact the customer service.

• Structurally Bosch drills are so simple, that allow you to repair almost any complexity.

• You only need to desire and availability of basic knowledge in mechanics.

happens that come across fake model perforator Bosch about this in more detail.

Videos about disassembling the gun Bosch