Build Daily


August 12, 2017 18:08

Repair Bulgarian Interskol own hands


  • 1 Features tool design
  • 2 essential tool for repairing grinder Interskol
  • 3 main electrical faults Bulgarian Interskol
    • 3.1 repair control circuits Bulgarian Interskol
      • 3.1.Wiring diagram 1 Interskol grinder control circuit 125 LBM
      • 3.1.2 Wiring diagram Interskol grinder control circuit 230 LBM
    • 3.2 How to repair the rotor grinders Interskol
      • 3.2.1 Dismantling bearing anchor angle grinders 125
      • 3.2.2 Dismantling bearing anchor LBM 230
    • 3.3 stator Repair Bulgarian Interskol
  • 4 Mechanical faults Bulgarian Interskol
    • 4.1 gear grinders Repair Interskol LBM 125
    • 4.2 Repair gear grinders Interskol LBM 230
  • 5 Assembling Bulgarian Interskol
    • 5.1 How to assemble the gearbox Bulgarian Interskol
  • 6 How to assemble grinders Interskol
  • 7 few words about lubrication Bulgarian Interskol
  • 8 Video repair grinders Interskol

Angle grinders (Bulgarian) Interskol company is very reliable and durable.They offer excellent performance and high dependa

bility.However, improper operation of the instrument, untimely replacement of carbon brushes, bearings and lubrication leads to premature failure.

Repair Bulgarian Interskol can be performed independently.

For this we need to know the device Interskol grinders, assembly diagram, the order of technological operations during disassembly and assembly of LBM.To properly perform the repair LBM Interskol enough to consider the proposed scheme and the instructions.

Angle cars Interskol company recently becoming more popular not only among professionals but also amateurs tinkering with his own hands.

Design features tool

Interskol Company is the Russian leader in the development, manufacture and sale of various power tools, a recognized global manufacturers.Products Interskol ergonomics, simplicity and ease of maintenance, environmental friendliness, higher power capacity.
Bulgarian Interskol classified by the diameter of the disc: 115,125,150,180,230.
Among amateurs tinkering with his own hands especially popular Bulgarian Interskol two classes: with 125 mm disc diameter of 230 mm.
In Class produced several models, differentiated by power.
In class 125 mm produced four (4) models Interskol: 125/900 angle grinders, angle grinders 125/1000, LBM 125 / 1100E, LBM 125 / 1400EL.
In class 230 mm made ten (10) Interskol models that differ from each other in power.Bulgarian class 230 Interskol available capacity exceeding 2000 watts.

deciphered Interskol marking LBM 230/2300: angle grinder with a maximum range of 230 mm diameter, 2300 watts.

Bulgarians have Interskol LBM 125 driven gears are mounted on a spindle by key connection.
Interskol grinders angle grinders 125 are assembled in one unit, serving pen.

Bulgarians have Interskol LBM 230 rear casing has a comfortable rear handle.This powerful professional machines with a two-handed design.In this class angle grinders driven gears are pressed onto the spindle shaft.

The proposed instructions for repair, we will consider two classes of schemes bolgarok Interskol: LBM 125 LBM 230.

essential tool for repairing grinder Interskol

LBM Interskol repair can not be done without a simple, right tool.Repair the mechanical part of the Bulgarian Interskol will help you a set of screwdrivers, carob keys, vise, hammer, press.Tester will need to repair electrical circuits.Well, if you have the opportunity to apply the type of IR-2 instrument for finding short-circuited turns in the windings.Of auxiliary materials needed greasing, napkins, wiping liquid.

necessary to prepare the workplace, choose the correct lighting to perform a quality repair angle grinder Interskol family.On the floor, in a dark room quality repairs can not be performed.

To perform repair grinders Interskol quickly and correctly, it is necessary that the Bulgarian scheme that you are going to be repaired.

Faults grinders are divided into mechanical and electrical.

main electrical faults Bulgarian Interskol

As a rule, most often the cause of failure of the Bulgarian becomes electrical fault.The primary failure rate Bulgarians on the electrical part is the failure of the carbon brushes.

repair control circuits Bulgarian Interskol

Chain Management Bulgarians have different models are slightly different from each other.Everything depends on the power tool, the availability of innovative developments.Some grinders integrated electronic control unit, which regulates smooth start.

Wiring diagram control circuit grinders Interskol LBM 125

INTERSKOL scheme LBM 125-900

The Bulgarian Interskol LBM 125 electro poz.55 attach special brush holders poz.44, access to which is possible only by removing the rear cover poz.51 stator housingpoz.42.

After removing the cover, unscrew the screws poz.50 holding the brush holder housing.

brush wear is determined by their net length.Workers carbon brush length can not be less than 5 mm.

Power is supplied via cable poz.53.The cable entry locations grinders and fork poz.53 cable may break off.The fault is eliminated by replacing the entire power cord or the failed part.Stranding unacceptable.

power cable supplies power to the switch poz.41, inserted into the housing po47.poz.46 is a lever to control the switch button.When performing maintenance on the purge lever incorporating silicone grease.

Wiring diagram Interskol grinder control circuit 230 LBM

INTERSKOL scheme LBM 230-2000

Meals poz.50 cord supplied to the switch poz.46 connected to the electronic unit poz.40, carbon brushes poz.38 inserted into the brush holderspoz.37.The electrical part of the grinder also includes a stator and a rotor poz.32 poz.27.

Replacing carbon brushes on the Bulgarian Interskol 230 LBM does not require removing the back cover.Enough to unscrew the cap and remove the brush holder poz.36 brush holder with carbon brushes.But to replace the circuit breaker, an electronic unit, the capacitor poz.42 can just make out the back of the handle poz44,45.To do this, unscrew the four screws 4 × 16 poz.44.

How to Repair the rotor grinders Interskol

Failure of the rotor takes place for the following reasons:

  • load or have failed the carbon brushes;
  • short circuit or open windings;
  • load lamella collector anchor:
  • destroyed or wedged rotor bearings.

the rotor 230

rotor repair requires specialized knowledge, equipment and tooling.It is preferable to buy a new rotor or pay for repairs to a specialized service center.But remember, it's worth the money.For osoboodarennyh recommend rewind the rotor with your hands.

To remove the bearing anchor, use a stripper.But it is possible to use and handy tools.For example, a vise, metal strips, hammer, nastavku soft metal.

Removing the anchor bearing LBM 125

on the rotor poz.31 two bearings mounted rear, near poz.32 collector.

Size Bearing 608Z.

And on the side of the impeller bearing pos.28 6000-2 RS size.Russian analogue 180100 .

Removed rotor bearings after dismantling of the gearbox housing.To pull the rotor from the gear, it is necessary to remove the drive pinion taper poz.26 sitting on the rotor shaft.

To do this, unscrew the nut M8 × 3,5 poz.25, dismount the drive pinion Z = 12.She fixed keyed poz.30.Removed bearing puller.

rotor angle grinders 125

Removing the anchor bearing LBM 230

To remove the bearings with anchor poz.27, you must pull out the rotor housing poz.19 gear.Unscrew the nut M8 poz.20, remove lock washers poz.21, leading to dismantle gear poz.22.gently shaking, remove the rotor from the gearbox housing.Bearing remains in the gearbox housing.He closed the lid poz.25 bearing, which is attached to the gear housing with three screws M5 × 8 poz.26.The gear housing installed bearing 6201-2RS size.Russian analogue 180,201 .

From the manifold bearing pos.28 removed using a stripper.Bearing 608RT size.Russian analogue 180608 .

Stator Repair Bulgarian Interskol

stator repair any Bulgarian Interskol made after determining the nature of the fault.The most common stator undercooked.This occurs because the tool from overheating.On the stator fault shows involuntary uncontrollable unwinding rotor grinders.

to repair the stator need to pull it out of the case.Check performance of the stator can be made and, without removing it from the case.But it can be done only in specialized workshops.Or if you have short-circuited turns control device IC-2.That determine the open or short circuit in the stator windings is possible without removing the stator.Burnt stator is removed, rewound, or instead set a new one.

Burnt stator can be rewound by hand.

rewind algorithm is as follows:

  • is cut in any way damaged winding from one edge;
  • counts the number of winding turns, determine the direction of its winding, the percentage of filling the slot of the stator core, measure the diameter of the wire;
  • removing burnt winding, clean the grooves of the core, check the insulation;
  • Prepared wire wound into prepared grooves desired number of turns of the stator windings;
  • solder the ends of the windings, after wearing them wire insulation;
  • stator winding is impregnated with AC;
  • Stripping traces of infiltration inside and outside on the stator housing;
  • You check free movement of the rotor within the stator.
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Video repair stator grinder Interskol own hands

Mechanical faults Bulgarian Interskol

From mechanical failures have bolgarok Interskol weak point is the gearbox.Applicable in the gearbox gears wear out over time, broken teeth, in the compounds of the play appears.

gear grinders Repair Interskol LBM 125

To repair gear grinders Interskol, you must establish the nature of the fault.Most gear mechanical fault is determined visually or aurally.Big spindle shaft runout, jamming or cranking gears gear determined by a simple inspection of the spindle shaft.And the increased running noise reducer, uncharacteristic noises, overheating can be determined at the hearing, or touch the body by hand.

reducer circuit INTERSKOL LBM 125-900

To disassemble the gear necessary to promote a (4) four screws M4 × 14, item 11, to remove GROWER washers DU-1000ER position 12, to pull the cover gear pos.13.It will be built in the spindle position 10.The spindle is mounted in a bearing pos.14.Size 6201-2RZ bearing.Russian analogue 180201.

necessary to use a press for pressing out of the spindle bearing housing.But you can gently knock and hammer.The main thing is not to damage the gear case cover.

wheel bevel gear pos.16 kept at key connection and secured locking ring poz.17.As the key to the Bulgarian Interskol LBM 125/900 applied bead diameter of 3 mm.If you remove the snap ring, then remove the gears is not a big deal.In other models bolgarok Interskol LBM 125 used key.

Remove the gears and check them for teeth licking, biting or destruction of, the presence of backlash in key connection.

gear grinders Repair Interskol LBM 230

To disassemble the gear LBM 230 pos.6 necessary to remove the cover by unscrewing the four (4) screws.The spindle position 8 is held in the bearing position 9, zapressovanom pos.6 the housing cover.Size 6203zz bearing.Russian analogue 180203.

reducer circuit INTERSKOL LBM 230-2000

The gear pos.11 pressed onto the spindle tension.To remove it, you will need the press.Craftsmen manage to shoot with a hammer, pre-heating of the gear.

Remove the gears and check them for licking teeth, destroying them.

Repair Bulgarian Interskol LBM 230

Assembling Bulgarian Interskol

Assembling Bulgarian Interskol is no different from other Bulgarians build brands.To assemble allowed serviceable, freed from old grease, parts and assemblies.The assembly consists of several stages.

How to assemble the gearbox Bulgarian Interskol

For gear unit assembly is necessary to collect the spindle, having put on his bearings and bevel gears.

position 10 on the spindle is worn gear housing cover pos.13, pos.14 bearing, bearing cap poz.15 wheel bevel gear pos.16.Gear is fixed on the spindle keyed.The LBM 125 is used as the key ball with a diameter of 3 mm.To lock the spindle gear is fixed lock ring poz.17.Assembled spindle is inserted into the needle bearing poz.18.A needle bearing is pressed into poz.21 gear housing.

reducer - LBM - INTERSKOL - 125-1100e

gear LBM 230 Assembling begins with the assembly of the spindle assembly position 8, which is pushed pos.9 bearing, retaining ring position 10.Wheel gear pos.11 pressed onto the spindle on.The spindle is inserted into the roller bearing position 12.Size Bearing NK1210.

To facilitate the pressing process driven gear pos.11 on the spindle gear pos.8 heat and cool the spindle.

Mounting idler LBM 230

How to assemble grinders Interskol

assembly algorithm Bulgarian Interskol following:

  • The body is inserted into the stator;
  • stator is covered by a plastic protection;
  • The stator is inserted into the rotor with a protected rubber sleeve on the bearing reservoir;
  • second rotor end is inserted into the gear case;
  • on rotor drive gear is pushed and fixed nut with right-hand thread;
  • gear housing is fastened to the stator housing with four screws;
  • checked smooth rotation of the rotor;
  • on gear housing cover is worn with a driven gear;
  • Screwed four (4) screws that secure the gearbox cover;
  • checked smooth rotation of the spindle tool;
  • Mounted carbon brushes;
  • Wearable back cover or going to handle;
  • produced test run the tool is checked for smooth operation.

algorithm to bring together all without exception, the Bulgarian family Interskol.

Several features in the disassembly and assembly of the Bulgarian Interskol:

  • to remove all the old grease from the gearbox housing, the latter is better to warm the professional hairdryer to a liquid lubricant and then remove it;
  • Some models bolgarok Interskol drive gear fixed to the shaft with two bolts, one of which is under the lock key S = 12;
  • Carefully unroll or tighten the locknut to the driven rotor gear grinder Interskol LBM 115;
  • lay in the gear case lubricant, less than half of its volume;
  • When disassembling carefully inspect the condition of the commutator bars, it should be no traces of burning and developed paths.

few words about lubrication Bulgarian Interskol

Before assembling mechanical components Interskol grinders, without fail, lubricate the parts of the recommended grease.