I can't give much history but my home built mill with !/2HP 180v DC motor powered by a cheap Chinese speed controller does everything that I want. Les Jones 1: 22/02/2015 18:06:27: 2165 forum posts 149 photos : Any motor with brushes will need them checking and replacing from time to time. It would also be worth cleaning out the carbon dust that results from the brushes wearing. Les. NeilОнлайн-запрос
Many mills and components still prefer DC variable speed, variable torque drives. These are energy efficient as they only require the amount of energy required to do the work. If a motor has 5,000 HP and only 1,000 HP is needed to do the final pass, it will only use 1,000 HP. Another benefit of modern electronic DC technology is the fact that you eliminate many relays and expensive conduit andОнлайн-запрос
Use a Treadmill DC Drive Motor and PWM Speed Controller for Powering Tools: Power tools such as Metal cutting mills and lathes, Drill presses, bandsaws, sanders and more may require .5HP to 2HP motors with the ability to fine tune the speed while maintaining torque.Coincidentally most Treadmills use a 80-260 VDC motor with
Mill drives ; Test field drives ; Pump drives ; Motor for shredders and crushers ; Motors for rolling mills Motors for roller plant in Russia. 660 V Squirrel Cage (IC 411 + IC 416) Motors for rolling mills. learn more. 11 spare motors for roller plant in Russia. 400 V Motors for rolling mills. learn more. 2 identical DC motors for steel plant in Germany. DC Motors Motors for rolling millsОнлайн-запрос
drive end designation is more useful. Frames — The standard specifies a horizon-tal frame split so that the armature can be lifted straight up and out. This requirement is practical in a DC machine, which has few connections crossing the split. The armature includes the commutator, the most technically complicated part of the motor, the part most prone to failure and the part that requiresОнлайн-запрос
Use a Treadmill DC Drive Motor and PWM Speed Controller for Powering Tools: Power tools such as Metal cutting mills and lathes, Drill presses, bandsaws, sanders and more may require .5HP to 2HP motors with the ability to fine tune the speed while maintaining torque.Coincidentally most Treadmills use a 80-260 VDC motor withОнлайн-запрос
Motors / Pumps / Drives; Cable Drums; Crane & Hoist Manufacturing; Platforms & Walkways; Motortronics SoftStarts; Gantry Trucks; Projects. Motor and Generator Projects; Fabrication Projects; Crane Projects; Photo Gallery; Resources. Technical Documents; Steel Mill Drive Motor. Back to Metal. 3500 HP DC MotorОнлайн-запрос
25/10/2012· Here's a close up look and overview of connecting and using a DC drive controller for a lathe or mill motor conversion to variable speed (VSD). The controlle...
20/05/2010· Rolling mill DC motors are best at low speed, high torque applications, while AC motors typically need to run above 800rpm to be cost effective. Also the case for higher efficiency of AC motors is many times negated by the wasteful braking methods of some AC drive systems. All this being said, for motors below 200-300kW, or when new products necessitate the changing of existing DC motorsОнлайн-запрос
The evolution of AC variable speed drive technology has been partly driven by the desire to emulate the performance of the DC drive, such as fast torque response and speed accuracy, while utilising the advantages offered by the standard AC motor. The main advantages of using AC Motors are their compact and simple, yet robust design, along with reduced maintenance requirements and lowerОнлайн-запрос
Several drives in Cement Mill Process are raw mill drives, cement mill drives, kiln drives, crusher drives, waste gas fan drives and compressor drives. Requirement of Mill Motors . They should have high starting torque. The starting current must be limited to a maximum of two times full load value to minimise voltage dips. The breakdown torque should alsd.be high so that sufficient overloadОнлайн-запрос
09/03/2011· DC Drives used in hot steel rolling mill application in Thailand
07/10/2009· I did a retro fit DC motor on my WEBB mill, and the performance has been outstanding. Don't consider a DC motor with brushes. Those will not work worth a damn as found out above., You neen a Permanant Magnet DC drive. I have not tried a VFD and other conversions as yet, but I will be looking into it as I have a Hardinge HCNC w/Fagor control I need to get online. Thing with the PM DC motorОнлайн-запрос
DC PCB Speed Control Module + Worm Drive Motor 200W, 180 RPM, 20Nm Torque! This picture above shows the the kit as we supply it (Although it doesn't show the optional steel shaft we offer). All you will need to source is a Switch Mode Power supply (around $33), a 12mm shaft that goes internally into the gearbox drive shaft and a coupling to go from the 12mm shaft to the shaft dimension of yourОнлайн-запрос
Small DC motors are used in tools, toys, and appliances. The universal motor can operate on direct current but is a lightweight brushed motor used for portable power tools and appliances. Larger DC motors are currently used in propulsion of electric vehicles, elevator and hoists, and in drivesОнлайн-запрос
Bar and Rod Mill DC Drive Motors. Bar Mill DC Drive Motors with SCR GE Bar and Rod Mill DC Drive MotorsОнлайн-запрос
The evolution of AC variable speed drive technology has been partly driven by the desire to emulate the performance of the DC drive, such as fast torque response and speed accuracy, while utilising the advantages offered by the standard AC motor. The main advantages of using AC Motors are their compact and simple, yet robust design, along with reduced maintenance requirements and lowerОнлайн-запрос
25/10/2012· Here's a close up look and overview of connecting and using a DC drive controller for a lathe or mill motor conversion to variable speed (VSD). The controlle...
a DC motor, M, whereby M = kW × (Top speed)2 / (Base speed) TMEIC2 installed its first AC adjustable-speed motor drive system for a rolling mill main stand in 1980; by January 2004 TMEIC had installed AC adjustable-speed motor drive systems on more than 700 main mill stands, coilers and reels, constituting more than 2,400 MW of installed main drive power. 2. TMEIC: includes equipmentОнлайн-запрос
AC/DC. AC (5) three-phase. Submit. Types. asynchronous (3) synchronous (1) Submit. Power. max. W. hp. min. Submit . Voltages . 10 V...50 V (3) 12V. 301 V...600 V (3) 601...1000V (3) 690 V. 101 V...300 V (2) 220 V. 51 V...100 V (1) > 1000 V (1) Submit. Rotational speed. max. rpm. rad.min-1. min. Submit. Protection classes. IP55 (2) IP65 (2) protection level (2) rugged ATEX. IP23 (1) IP24 (1Онлайн-запрос
Open loop (V/Hz) AC drives are the most common drive in use today, with up to 70% use, according to some surveys. Behind the standard open loop drive, stands several other types of drive products: brush DC servo drives, DC drives, SCR DC drives, stepper drives / motors, AC servo drives, and brushless DC servo drives. Though in smallerОнлайн-запрос
Several drives in Cement Mill Process are raw mill drives, cement mill drives, kiln drives, crusher drives, waste gas fan drives and compressor drives. Requirement of Mill Motors . They should have high starting torque. The starting current must be limited to a maximum of two times full load value to minimise voltage dips. The breakdown torque should alsd.be high so that sufficient overloadОнлайн-запрос
09/03/2011· DC Drives used in hot steel rolling mill application in Thailand
An induction motor fed by GE's MV7000 Medium Voltage drive is one of the latest solutions designed and offered by GE for all rolling mill applications. As the induction motor provides more availability, reliability, lower maintenance and reduced electrical distribution equipment, this solution can contribute to significant savings for our customers. It also provides similar performance to the