External Balancers

Fully automatic operation means you no longer need to pre-balance grinding wheels, and eliminates the need for awkward equipment, which only does part of the job. Fully automatic operation means you no longer need to pre-balance grinding wheels, greatly reducing set-up time and ensuring a smoother running, more efficient grinding operation.

Systems are available to fit machines with wheel diameters from 6” to 48”. They interface with CNC machines and can be designed into every QC/SPC program which includes grinding. You purchase the SBS System as a retrofit package or as an option from most machine tool builders and rebuilders.

OverviewTechnical Data
System Principles

The system operates on a principle of mass compensation for wheel imbalance. The balance head contains two movable eccentric weights, each weight is driven by electric motors through a precision gear train. These weights can be repositioned to offset any imbalance in a grinding wheel.

Unbalanced Balanced

Imbalance or vibration is picked up by the sensor. The signal is fed to the controller, which filters the signal by RPM. The controller then drives the two balance head weights in the direction that reduces the amplitude of the vibration signal. When the weights are positioned so the lowest vibration level is reached, the balance cycle is complete.

System Components

Computer Control features a bright graphic display in a sealed enclosure for the harshest of grinding environments.

Sensor monitors vibration levels with precision accuracy. It can be mounted with the magnet supplied or the magnet easily un-screws for stud mounting.

Balance Head compensates for wheel imbalance. Balance is maintained even if wheel is stopped and re-strated.

Spindle Adapter attaches balancer head to the grinder. It allows easy removal of the balance head for quick wheel changes.

External Balancers mount on the end of the machine spindle, using a mounting adaptor designed by SBS for each specific model of grinder. This mounting method allows for easy retrofit and installation.

External balancers are grouped into four basic connection types, which are pictured on the following pages. This connection type indicates the method of connecting the Balancer to the Balance Control unit.

Type -F – Remote cable connect
Type -L – Standard cable
Type -V – Heavy duty cable
Type -N – Non-Contact
Type -G – Non Contact with integral AEMS sensor

Type -N and -G balancers use non-contact inductive power transmission, and must be used with a Non-Contact Sender coil assembly.

ModelsCase TypeCompensation (g*cm)
SB-0075-xLow Mass75
SB-0250-x250
SB-0252-x350
SB-0254-x550
SB-0256-x850
SB-0325-x95mm250
SB-0350-x350
SB-0550-x550
SB-0850-x850
SB-1450-x114mm1450
SB-2550-x2550
SB-3000-x3000
SB-3700-x130mm3700
SB-5000-x5000
SB-7500-x7500
SB-9500-x147mm9500
SB-9800-x12,000