• Milling - Energy intensive and high maintenance

    A squirrel-cage motor or a synchronous motor started direct on line without any help of a frequency converter normally cannot produce sufficient starting torque. Therefore it is required to accelerate the mill without load until the rated speed and then, by means of a clutch system, couple the motor to the mill. Another possibility is to use a

  • Ball Mill – Northern Heavy Industries Group Co., Ltd.

    We are a marketing team of NHI, Northern Heavy Industries Group Co., Ltd. With over 90 years experience and knowledge of international standards, technological changes and industrial systems, we are dedicated to provide the best and economical solutions to our valued customers.

  • Sag Mill Synchronous Motors - caesarmachinery.com

    motor rating for ball mill motor rating for ball grinding machine. Large Synchronous SAG and ball mill Drive Systems GE Motors. QuadramaticTM. ... Ball mill drives with synchronous motor and air clutch/fluid coupling. 7.2.

  • Grinding Mills: Ball Mill & Rod Mill Design & Parts

    Common types of grinding mills include Ball Mills and Rod Mills. This includes all rotating mills with heavy grinding media loads. This article focuses on ball and rod mills excluding SAG and AG mills. Although their concepts are very similar, they are not discussed here. Photographs of a glass ended laboratory ball mill show action of ball mass within the mill.

  • Autogenous mills, semi-autogenous mills and ball mills for ...

    Autogenous mills, semi-autogenous mills and ball mills for wet grinding. A company of Polysius ThyssenKrupp Technologies tk. 2 High-performance systems for wet grinding applications. The comprehensive range of wet grinding ... SAG mill. Synchronous motor drive with air clutch.

  • dual motor grinding mill drive synchronous motor

    WEG launches new cost-effective variable speed drive with - dual motor grinding mill drive synchronous motor,WEG successfully tests dual-pinion ball mill drive speed synchronous motors driven by frequency inverters for mills with dual pinions at its plant in Brazil for electric motor drives for eighteen ball mills and semi-autogenous grinding (SAG)Used Mining Equipment for Sale, Ball & SAG ...

  • Hurst - Permanent Magnet AC Synchronous Motor Family

    HURST ® permanent magnet synchronous motors are reversible permanent-split capacitor motors identical in construction to the HURST ® stepping motors. The 60 Hz can-stack motors operate at synchronous speeds of 300 and 600 RPM. High quality gearing is available for the can-stack motors.

  • What guarantees the highest product quality in rolling mills?

    high power ratings. Our synchronous motors with cylindrical rotor cover a power range from 500 kW up to 16.5 MW at speeds of between 20 and 1500 rpm – perfectly tailored to meet your technical requirements. At home in rolling mills around the world Our rolling-mill motors are used in almost every rolling mill around the globe –

  • Cover headline - Eaton

    mills with synchronous mo-tors, or high speed motor and gearbox designs with the clutch mounted on the output shaft of the gearbox, to avoid the need for the additional costly invest-ment required for high torque equipment. Where speeds permit, Airflex® that there is no unintentional clutches can also be used for inching or jogging the grinding

  • Synchronous Motors With Clutches For Mill

    Home Application ball mill synchronous motor for ... SAG mill. Synchronous motor drive with air clutch. ... drive with an air clutch and a synchronous motor. ... Adobe PDF7.1 Ball Mill drives with synchronous motor and air clutch/fluid coupling. ... torque speed curves ball mill vfd motor. zenith Heavy ... ball mill clutches.

  • GRINDING MILLS-BALL MILLS-Page 7-New & Used Mining ...

    grinding mills ball mills. NEW AND USED BALL MILLS FOR SALE. ... 1500 HP synchronous motor Eaton Fawick air clutch. L01741 (2) - 13 FT. DIA. X 20.5 FT. ALLIS CHALMERS MPSI BALL MILLS. Spout Feed, Overflow Discharge 1750 HP, 4000 Volt Motors. L00097 (1) - 13' X 21' ALLIS CHALMERS BALL MILL.

  • Series9000 - Argo International

    For grinding mill applications, GE has developed a drive using two, high efficiency, synchronous motor driven pinions on one bull gear. A Quadramatic™ load sharing drive uses a special winding in addition to the amortisseur winding to dynami-cally alter the rotor flux. These continuous adjustments maintain the load sharing between the two

  • Large Ball Mill Synchronous Motor - Made-in-China.com

    Synchronous Motor, Ball Mill Motor, 1250kw Synchronous Motor manufacturer / supplier in China, offering Large Ball Mill Synchronous Motor, Yr3 Series Low-Voltage Slip Ring Electric Motor, Low Voltage Explosion Proof Universal Blower Motor and so on.

  • Auxiliary Driveamp; Clutch Arrangement For Ball Mill

    ball mill drive belt - biosante.be. arrangement of ball mill drive - spiritueleringeu. auxiliary drive clutch arrangement for ball mill ball mill drive motor choices - Artec Machine Systems ball mills, the starting torque restrictions of some of the newer mill drive, synchronous motor with the .

  • Permanent magnet motors eliminate gearboxes - ABB Group

    ABB's permanent magnet motor is a synchronous motor, which, as there is no rotor slip, provides better accuracy than standard, asynchronous, motors (see panel on page 25). In an asynchro-nous motor, the slip varies according to speed and load. With a synchronous motor, it is simpler to optimize the speed, while the elimination of slip compensa-


    asynchronous and synchronous motors have been utilized. Many mills are powered by wound rotor induction motors (WRIM) with some form of secondary control. A benefit associated with variable secondary resistance, for a wound rotor induction motor, is the reduction in starting current. This can be

  • clutch for cement mill motor - foxingredients.co.za

    MILL DRIVES FOR CEMENT INDUSTRY NATHAN SCHACHTER CIMENTEC ENGINEERING LTD. October 29, 2006 2 A. Ball Mill Drives SINGLE MOTOR DRIVES • Ring gear and pinion with low-speed synchronous motor and air clutch • Ring gear and pinion with high-speed


    EXPERIENCE WITH SYNCHRONOUS AND SLIP RING INDUCTION MOTORS DRIVING CEMENT MILLS Table of contents Section Page 1 Abstract 3 2 Introduction 3 3. Ball mill and motor 3 3.1 Ball mill load characteristics 3.2 Motor torque defined 3.3 Differentiating characteristics 3.4 Synchronous motor

  • 1000 HP,Synchronous Motor - Electric motors & generators ...

    Jun 16, 2004· I have a Synchronous Motor coupled to a Ball Mill by clutch. It starts uncoupled and after it synchronizes the clutch engages the load. Nameplate and other data and parameters are: 1000HP, PF 1.0, 4160V, 60HZ, 180 rpm, 60°C Rise Stator, 70°C Rise Rotor, Excitation 125V, kVA 800, 111 Amps armature, 125 V field, Exc. Amps 158, frame 9404, GE.

  • Synchronous Motors on Grinding Mills: The Different ...

    Abstract: Synchronous motors (SMS) continue to be a viable alternative to induction motors because of efficiency advantages. Since SMs have long been used to provide leading kvar for power factor (PF) improvement and to help with the device switching in load-commutated inverter (LCI) drives, these machines are efficient prime movers for large mill applications.

  • how a clutch opperated when starting a ball mill - tomstahl.eu

    clutch for cement mill motor - shribalajipropertiin. ge ball mill clutch - diavistacoin Ball mill drives with synchronous motor and air clutch,, how a clutch opperated when starting a ball mill. Pneumatic Clutches and Brakes - Kraft Power. Pneumatic Clutches and Brak CCB Series, Ball Mill Clutches, grinding mills The clutch is adaptable to

  • (PDF) Evaluation of synchronous motors on grinding mills

    Evaluation of synchronous motors on grinding mills ... -torque characteristic s of a synchronous motor a nd mill load . when starting the mill discon nected via an air clutch and when starting the ...

  • BALL MILL DRIVE MOTOR CHOICES - artec-machine.com

    B. SYNCHRONOUS MOTOR WITH AIR CLUTCH The high starting torque design synchronous motors directly connected to the mills have been used for years. This type of drive would be able to accelerate the mill in about eight seconds, but would require about 600% current inrush. The low starting torque design synchronous motors with an air clutch used

  • Synchronous motor - Wikipedia

    The synchronous motor and induction motor are the most widely used types of AC motor. The difference between the two types is that the synchronous motor rotates at a rate locked to the line frequency since it does not rely on current induction to produce the rotor's magnetic field.

  • Ball Mill Drives - Mineral Processing & Metallurgy

    Several types of ball mill drives can be furnished, made up of various combinations of gearing, motors and transmission equipment. The correct combination to be selected takes into consideration power requirements, gear ratings, floor space, interference from other plant equipment and motor characteristics. The main types are described and illustrated on these pages.

  • Allis Chalmers Ball Mill - MineListings.com

    Ball mill, 13' diameter x 21' long, Manufactured by Allis Chalmers (Svedala), rubber-lined mill, with Siemens-Allis 2,000 HP, 4000 volt, 200 RPM synchronous motor, Eaton airflex clutch. Includes trommel discharge, ball mill rejects conveyor, lube system, etc. …

  • Search | WEG

    IEC Induction Motors; Large Synchronous Motors. Electric Machinery Company - Synchronous Motors; Large DC Motors; Fractional DC Motors; WEG Motor Scan; Gearboxes and Geared Motors. WG20. WG20 - Geared Motors. Helical Geared Motors; Parallel Shaft Geared Motors; Helical Bevel Geared Motors; MAS. MAS - Geared Motors. Helical Geared Motors

  • Difference Between Synchronous and Asynchronous Motor ...

    Difference Between Synchronous and Asynchronous Motor The Difference Between Synchronous and Asynchronous Motor are explained considering factors like its type, slip, requirement of additional power source, requirement of slip ring and brushes, their cost, efficiency, power factor, current supply, speed, self starting, effect in torque because of change in voltage, their operational speed and ...

  • Starting a 6kV 3Ph - 2,200 kW - 1,000 rpm slip-ring motor ...

    Feb 19, 2017· - Starting a 6kV 3Ph 50Hz - 2,200kW - 1,000rpm slip-ring motor for a cement ball mill. ( 00:55 ) - Starten eine 6kV 3Ph 50Hz - 2,200kW - 1,000rpm Schleifringmotor für ein Zement-Kugelmühle.

  • Synchronous Motors - Electric Machinery

    manufacturing and servicing large synchronous motors for the paper industry. Synchronous motor driving a grinder in a paper mill. Industry Standards WEM manufactures synchronous motors to meet all current industry standards including NEMA MG 1, IEEE 115, and ISO 9001:2000 standards. Motors can be designed to match your existing machines space