The Bernard Company
Innovative oil storage system products serving a wide range of industries.

Tool Protection

Clarktron Rimefire 3 Tool ProtectionClarktron Rimefire 3 Tool Protection
Rimfire Tool Protection System Operation – Rimfire 3 tool protection system monitors every step of the press cycle for any condition that could cause trouble.  Tool protection is used to monitor the process of a functioning press and stop the press before damage occurs when the process fails.  The tool protection system will indicate the exact failure so that the problem can be corrected, the tool protection unit can be rest and the press may again be started.

Cyclic Events – The Rimfire 3 tool protection system can monitor up to 16 cyclic events at one time, such as part ejection, stock feed, part transfer, etc.  There are two tool protection system models available.  The mini tool protection system unit has 3 cyclic stations.  The expandable tool protection system unit has from 4 up to 16 cyclic stations.  The events must occur between and adjustable timing window tied to the press rotation.  Proximity sensors and cams are provided for this purpose.  All stations have an individual LED so that a missing signal will be clearly indicated.  Both the cam system and probe stations are completely fail-safe.  If the cams or station inputs become disabled, the press will be disabled and fail-safe circuit will be indicated.

Static Events – The Rimfire 3 tool protection system comes equipped with 2 stations to monitor static events, such as stock buckling or stock run out sensors, pilot misfeed, feed microswitch sensors, etc.  Several sensors can be used in parallel with the Accessory N.O. or in series with Accessory N.C.  Whenever the accessory circuits stop the press, the corresponding LEDs will illuminate.

Tool Protection Features

top↑Tool Protection System Specifications
Number of Tool Protection System Control Stations

Tool Protection System Response Time:  (including rise time of power relay)

Tool Protection System Output Relay:

Tool Protection System Operating Voltage:

Tool Protection System Power Consumption:

Tool Protection System Sizes:

Tool Protection System Standard equipment:

Tool Protection System Optional Equipment:


Clarktron Tondial ALS – Digital Press Tonnage Monitoring SystemClarktron Tondial ALS – Digital Press Tonnage Monitoring System
Microprocessor analyzes tonnage generated by the press for a chosen number of cycles and automatically sets the limit above and below the average by a chosen percentage.  The press is stopped when limits are exceeded.

The Tondial Tonnage Monitor Features:

Tondial Tonnage Monitor Operation:  The standard Tondial tonnage monitor is equipped with 2 or 4 strain gauge sensors.  Generally a 2 sensor tonnage monitor system is adequate for OBI and small straight side presses, however 4 sensor tonnage monitor systems are best for H frame presses. 

The tonnage monitor’s sensors are mounted in an area (usually the frame of the press) so that the stress or strain of the machine operating creates movement on the sensors.  The microprocessor circuit analyzes the signals and the peak reading of each sensor is displayed and updated each cycle.  If the reading strays outside of the limit settings, high or low, the press will be stopped and the out of limit sensor will be indicated.  Both the tonnage readings and limit settings are constantly displayed.  It is necessary to adjust the tonnage monitor to a known value during the initial installation.  Generally this is done by having the press generate tonnage on calibrated load cells from a bureau of standards.  The tonnage monitor is then set to match these readings.

The limit settings of the tonnage monitor may be set manually or automatically.  In the automatic mode the microprocessor will look at an adjustable number of cycles, takes an average of the peaks and automatically set the limits 5, 10, 15, 20 or 25% above and below the average value.  Settings are stored in the tonnage monitor unit when the power is off.

In addition to protecting the press from overload and tool breakage, the tonnage monitor unit is also useful for picking up top↑tool wear, balancing the die, detecting material over and under thickness etc.

Clarktron Tondial Tonnage Monitor ALS Rimfire 3 Tool Protection System
Combines tonnage monitor and tool protection in one package

Clarktron Air-O-Matic – Electronic Air Ejection ControlClarktron Air-O-Matic – Electronic Air Ejection Control

Air-O-Matic ejects parts with a measured blast of air at a precisely timed point in the press cycle.

With today’s energy prices, it’s a waste of money to leave air lines turned on through 360 degrees of a press cycle, when it only takes 30 to 40 degrees of the cycle to kick parts loose.

The air ejector control’s turn the part-eject air on and off at exactly the right points in the stamping cycle, so you use only the air you need.  The result  - your compressed air consumption is cut as much as 80%. Set up is simple:  Air-O-Matic air ejector is easily set for a specific press cycle.The air ejector timing is set by mounting a proximity switch to pick up a cam on the crankshaft or the press ram.

Delay is established by noting the point in the machine cycle where the proximity switch ‘sees’ the cam, and adjusting the ‘delay’ knob to add the time needed (variable from 0.1 to 10 seconds) for the press to move to the precise turn-on point in the cycle.

Duration of the air blast (variable from 0.1 to 10 seconds) is also set from the air ejector’s control panel.  Once the values for the delay and duration are set, they remain the same as the machine cycle is repeated.

Air flow is controlled by a solid-state electro-optical relay (immune to noise and vibration) providing crisp, clean ‘on-off’ current to a solenoid which opens and closes the air valve.  Manual air flow can be provided by pressing the ‘energize’ button on the air ejector’s control panel.

Air-O-Matic  Air Ejector Features

Air-O-Matic Air Ejector Specifications