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EM 8370

The EM 8370 is the new Corghi balancing machine for off-vehicle balancing of car, van and motorcycle wheels.

Its high-tech construction and outstanding performance place this machine at the top of its category, assuring minimal throughput times, high precision and excellent operator-friendliness .

Key innovative features include the new digital inside sensor, a sturdy, high-precision device requiring no calibration, and the new-design wheel guard that saves space and provides convenient handling.

Offeringa vast range of balancing programs, the Corghi EM 8370 is able to process rims up to 28" in diameter, optimising complete cycle times thanks to a new braking device and a new wheel spin unit .

Commands are given using a convenient control console on the machine's large weight tray panel.

The operator interface and unbalance data are displayed on a LCD with intuitive graphics including all information.

As well as the balancing programs, the machine's software also has a series of functions allowing the user to save the three procedures he uses most often, and a help function with two levels: one level describes the selected icon's function and the other indicates, in interactive mode, all the operational procedures for the various programs.

To guarantee outstanding precision and repeatability, the EM8370 has intelligent software that renders the machine immune from outside disturbances such as accidental knocks or vibrations during balancing operations .


Main characteristics

  • Electronic balancing machine with microprocessor for off-vehicle balancing of car, van and motorcycle wheels.

  • Balancing speed variable in relation to wheel weight: this optimises the spin time and therefore reduces risks due to revolving parts, as well giving significant energy savings.

  • The body's front is slanted for an optimal working position and easier access to the weight tray.

  • The wheel is located further forward towards the operator, to facilitate adhesive weight fitting.

  • Adjustable head for easier data reading and control of operations.

  • Automatic inside sensor for measuring distance and diameter and for applying adhesive weights in the ALU programs . Horizontal working surface, with diameter measurement up to 27" and width up to 300 mm. Calibration-free digital technology.

  • Automatic outside sensor for width measurement.

  • Automatic position search: on completion of the wheel spin, the machine automatically positions the wheel in the weight application point.

  • High-performance wheel spin and braking unit driven by a servomotor.

  • Shaft clamping brake, automatically or pedal operated.

  • STOP button for immediate machine shutdown.

  • Side flange holder panel.

  • Large cover with trays to take weights of all kinds and the most commonly used accessories.

  • Automatic start when wheel guard is lowered.

  • Wheel guard able to take wheels up to 44" in diameter, but streamlined for easier handling and to reduce the machine's overall dimensions .

  • LCD high resolution colour monitor, ideal for running programs in the 3D graphic format .

  • Control knob for data input and program selection.

  • Resolution: 1 g.

  • Unbalance values displayed in grams or ounces with rounding.

  • Balancing modes available:

    • Standard: dynamic on both sides of rims.

    • ALU/ALU P: seven different options for alloy rims.

    • Din. Moto: dynamic on both sides for motorcycle rims.

    • Alu Moto: dynamic on both sides for alloy motorcycle rims.

    • Static: on one plane only.

  • "Shift Plane" program for use of weights in multiples of five grams, with no need for intermediate sizes.

  • "Hidden Weight" program for subdividing the adhesive balancing weight for the outside into two equivalent weights placed behind the spokes of the rim.

  • "Split Weight" program (motorcycle program) allowing weight to be divided into two equivalent parts for positioning on either side of the spoke.

  • "OPT flash" program for the rapid optimising of wheel running noise levels . Shifting the tyre on the rim and a balancing spin will cause the machine to display:

    • Wheel's real unbalance.

    • Minimum unbalance which can obtained by further rotating the tyre on the rim.

  • Utility programs:

    • Calibration

    • Customisation

    • Spin counter

    • Rapid recall of the 3 most used programs

    • Service

    • Diagnostics

  • Car databank, for optimal wheel fitting on the balancing machine depending on the equipment available.

  • Three working environments to allow three operators to work at the same time without having to reset the data.

  • VEI (Visual Eccentricity Inspection) for checking for wheel and rim roundness defects.

  • Automatic Quick Lock (QL) wheel clamping with pneumatic locking device (optional).

  • Pneumatic clamping system (optional) for automatic wheel clamping . An alternative to the conventional Quick Lock system.

Technical Data


Balancing speed:

60/80/98 rpm

Maximum unbalance value calculated:

999 g


1 g

Average spin time:

5,5 s

Shaft diameter:

40 mm

Rim width setting range:


Rim diameter setting range:


Maximum wheel/machine distance:

300 mm

Maximum wheel width (with guard):

630 mm

Maximum wheel diameter (with guard):

1100 mm

Maximum wheel weight:

65 kg

Power supply:

100/115/230 V 1ph

Total power absorption:

420 W

Weight of the machine (with guard):

215 kg