Hydraulic systems & components


Hydraulic pumps with higher flow

Second Quarter 2020 Hydraulic systems & components

BMG has recently launched a new range of portable hydraulic electric Enerpac E-pulse pumps, which are critical to all 700 bar operating hydraulic systems. These E-pulse pumps have intelligent auto-cycle functionality and an efficient power to weight ratio, to ensure dependable operation and high productivity in challenging industrial applications.

E-Pulse pumps, with a compact design and well organised components, are fitted with a smart, brushless DC motor and controller that automatically varies the speed to maximise flow at any pressure.

“Our new lightweight Enerpac pumps are able to provide power to various 700 bar hydraulic cylinders, nut cutters and torque wrenches quickly and efficiently. E-Pulse pumps are able to operate hydraulic tools as fast as pumps with motors larger than 0,75 kW. These pumps are currently the only hydraulic torque wrench pumps on the market with intelligent auto-cycle functionality and are the only pumps available that allow an operator to vary the speed between 25% and 100% of full speed,” says Enerpac product manager, Chantelle Janse van Rensburg. “E-Pulse hydraulic electric pumps have an adjustable speed dial which allows the operator to adjust the speed to suit the specific task, ensuring precise control of large and small hydraulic cylinders and nut cutters, as well as quick and safe completion of work.”

For bolting applications, the operator can set the pressure and operate the torque wrench pump in either ‘manual’ or ‘auto-cycle’ mode. The intelligent auto-cycle function enables press-and-release actuation to the cycle wrench until final torque is achieved, significantly improving completion speed in every application.

The E-pulse range features a new interactive pendant that delivers visual and tactile feedback, as well as programming and diagnostic status to the operator. The IP67-rated pendant, with protection against the ingress of dust and water, can be stored in the handle of the pump and is secured via a magnet. Operation, programming and diagnostics status are communicated to the operator through yellow, green and red light emitting diodes (LED) as well as vibration pulses. Fault codes indicate any issues related to voltage, temperature and button malfunction, or if professional service is required.

The new E-series pump range is a high-performance pump, with a 63 kW direct-drive motor, has a six-piston block design that provides even flow and smooth operation of connected tools. Various models are available, with a choice of five valves: 3/2 jog, 4/3 jog, 3/2 dump-and-hold, 3/2 dump and 4/2 torque wrench. Flow at rated pressure is 520 ml/min, with a maximum operating pressure of 690 bar.

Additional features include a 24 V DC power regulator, built-in thermal protection, a 7 metre pendant cord on the torque wrench pump and a 3 metre pendant cord on the other four pumps. All models in this range are fitted with a convenient cord management system.

BMG’s E-series pumps feature an IP54-rated durable aluminium housing which encloses the system components for maximum protection and easy service accessibility. These torque wrench pumps are fitted with an Enerpac Speed-D-Coupler pre-calibrated (calibration certificate included), 10 cm gauge and feature an integrated heat exchanger that cools the pump during operation. System components are enclosed for added protection and housing fins provide heat dissipation. Other features include impact absorbing, vibration dampening feet and an integrated roll-cage design.

This system has been designed for easy access to components during maintenance procedures. The pump has an oil level indicator, convenient oil fill port as well as automatic breather which needs no adjustment. Draining of oil is not required for pump element maintenance.

BMG’s range of Enerpac high-pressure hydraulic equipment ensures quick, safe and dependable operation in many industries, including mining, oil and gas and power generation, as well as infrastructure and manufacturing.


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