3rd Quarter 2012Electrical switching & drive systems & components
New to BMG’s range of Tsubaki cam clutches is the BR-HT series, designed for use in inclined conveyors and bucket elevators. These backstop cam clutches, which offer optimised speed over-running and higher torque than conventional cam clutches, prevent reverse rotation of drive shafts, thus avoiding damage to machinery and expensive equipment.
The BR-HT series, which is available in 65 units, with bore sizes from 20 to 320 mm, provides torque capacities from 105 Nm to 366 000 Nm and maximum over-running speeds from 1000 rpm to 3600 rpm.
“These new robust backstop cam clutches are ideal for OEM applications and have a special integrated design with lift-off cams that provide mechanical engagement only when needed and optimised speed overrunning, with no contact between cams and races,” says Carlo Beukes, BMG’s power transmission product manager. “At all other times, the cam clutch rotates freely, with no mechanical contact in the clutch mechanism. The result of this non-contact operation is extended service.”
The high torque capacity of the BR-HT clutch is the result of a design featuring a full complement of cams to provide the maximum number of load transmitting members per given diameter. This means greater torque capacity size-for-size compared to other types of one-way clutches.
The simple design, in which the cam clutch mechanism is incorporated in a cage between standard dimension inner and outer bearing races, allows the cam clutch to be easily integrated into a wide range of mechanical systems. The facility for this type of mounting is further enhanced by a keyway that simplifies installation by ensuring positive location and fixing of the clutches onto shafts. With the outer race of the clutch anchored to a stationary member, the inner race can overrun freely in one direction of rotation, even at high speed. Reverse rotation is instantaneously prevented by the automatic engagement of the clutch.
South Africa’s Mine Health and Safety Act states that the installation of incline conveyor belts must include the fitting and use of one or more devices to prevent run-back or run-on which could cause injury through materials or minerals falling from a conveyor belt. Tsubaki back stop cam clutches – designed for safety in high or low speed applications – meet the requirements of this legislation.
BMG’s technical team advises on the selection of the correct cam clutch for each application and the appropriate installation and usage for optimum performance and improved safety standards.
Precise detection of complex rotational movements Beckhoff Automation
Electrical switching & drive systems & components
The EP3751-0260 EtherCAT Box module by Beckhoff connects an acceleration sensor with an inertial measurement unit - a gyroscope. This provides accurate detection of acceleration and rotational motion in addition to shock, vibration and tilt measurement, both as preprocessed values and as raw sensor data.
Read more...Energy management system for electrohydrostatic actuation systems
Electrical switching & drive systems & components
In the machine manufacturing industry, more drive systems are being converted from servo-hydraulic throttle to electrohydrostatic actuation systems. The four-quadrant capability of the electrohydrostatic pump unit and servo drive used in this technology, in combination with the new Moog energy management system, allows regenerative power flows generated during braking or pressure relief to be stored and reused.
Read more...Drive solution for stacker reclaimer
Electrical switching & drive systems & components
Hägglunds Drives South Africa recently completed a retrofit project on the bucket wheel of a stacker reclaimer at Richards Bay Coal Terminal. The project entailed replacing a gearbox drive solution with a direct drive solution from Hägglunds Drives SA.
Read more...Kamoa-Kakula power pack order for SEW-EURODRIVE SEW-EURODRIVE
Electrical switching & drive systems & components
With well over 100 units already delivered, SEW-EURODRIVE is set to continue supplying Ivanhoe Mines’ prestigious Kamoa-Kakula Copper Complex in the Democratic Republic of Congo.
Read more...Seven ways to reduce production downtime on the plant
Electrical switching & drive systems & components
Production downtime is one of the biggest risks in the manufacturing industry. Follow these seven tips to reduce machine downtime in your production line.
Read more...The time is now to implement a motor management strategy Schneider Electric South Africa
Editor's Choice Electrical switching & drive systems & components
Motor management plays an all-important role in controlling motor energy costs in various industries, segments and applications. Research and practical experience have consistently shown that effective motor management practices can result in significant energy savings, reduced operational costs, and improved overall system reliability.
Read more...Rapid overhaul of compressor motors ACTOM
Electrical switching & drive systems & components
Marthinusen & Coutts Zambia was requested by a smelter based in the Copperbelt to provide an in-country repair solution for its two critical 4,5 MW compressor motors. The company was given only three weeks in which to overhaul and commission the motors.
Read more...PC-based motion control on a labelling machine Beckhoff Automation
Editor's Choice Electrical switching & drive systems & components
For 50 years, Bausch+Ströbel in Germany has been developing packaging and production systems for the pharmaceutical industries. The company’s goal is to offer the best technical and economical solutions for the challenges of modern industry. Its new ESA1025 labelling machine shows how this is achieved with PC-based control from Beckhoff as the central motion controller.
Read more...Thrust for hybrid electric flying
Editor's Choice Electrical switching & drive systems & components
Several leading academic institutes in Germany are collaborating on the future of hybrid electric flying. The partners are researching an entirely new propulsion system for medium-range aircraft with up to 35 passengers.
Read more...Precise knowledge for precise applications
Electrical switching & drive systems & components
Aerotech has been supplying standard product solutions such as motors, drives, controls and positioning tables since 1970. Customised motion subsystems include positioning systems on granite structures with undercarriage and vibration isolation, and also external measurement systems.
printer friendly version