Electric Motors #2438210

Speed of Stall Torque Motor drops as it is loaded and reaches to zero as seen from the graph. After reaching zero speed, if the shaft of Torque Motor is rotated by force in opposite direction of normal rotation then the Torque Motor tries to resist it. (Please see graph below X-axis, which shows T/ N curves at different voltages) This means that when an energized Torque Motor is driven by an extended source against normal rotation it exerts an almost constant lacking torque on this extended source.

Application

• One main application of these Stall Torque motors is Cable reeling drums (Motorised Cable Reeling)
• The typical property of Stall Torque Motor is used in unwinding application of cable reeling drums. Motorised Cable Reeling Drums (C.R.D.) are used to supply electrical power to moving equipment like Stackers, Reclaimers, Trippers etc. in Steel Plants, Cement Plants, Power Stations, Ports/Docks etc.
• Cable Reeling Drums are driven by Stall Torque Motors through Gear-Boxes of required ratios. Cable Reeling Drums rotate in both directions depending upon application ( i.e. whether cable is paid-off or is reeled in). We are supplying motors for cable reeling drums (Motorised Cable Reeling) as per Mark standard and also direct replacement for Demag / AKH / other Chinese manufacturers.

Types

Mark Elektriks manufactures Torque Motors since 1971 for various applications. Mark Elektriks has been supplying stall Torque motor for cablereeling drums (Motorised Cable Reeling) since 1984-85 in Squirrel Cage type design and since 1995 in Slip Ring Type design.

Specifications

Squirrel Cage - Stall Torque motor for cablereeling drums (Motorised Cable Reeling)

MARK make Stall Torque Motor, No Load Speed 450 RPM (12 Pole), 3 Phase, 50 Hz, 415 Volts, Foot Mounted (B-3 Construction), Class F Insulation, suitable for 50C ambient; Cont.rated, fitted with EMCO make A.C. failsafe Electromagnetic Brake, Totally Enclosed Surface Cooled (TESC) Enclosure. (Brake Coil Voltage will be 415 Volts). Protection IP-54. Tolerance for stall torque + 10 % to - 5%.

Slipring Rotor - Stall Torque motor for cablereeling drums (Motorised Cable Reeling)

MARK make Stall Torque Motor (Slipring Type) No Load speed 1500 RPM (4 Pole), 3 Phase, 50 Hz, 415 Volts. Foot Mounting ( B3 Construction) Class F insulation, suitable for 50C ambient. Continuous rating S1 (100%) Fitted with EMCO make A.C. failsafe Electro Magnetic Brake (Coil Voltage 415 Volts ). Totally enclosed Surface Cooled. (TESC) enclosure. IP 55 protection.

Speed of Stall Torque Motor drops as it is loaded and reaches to zero as seen from the graph. After reaching zero speed, if the shaft of Torque Motor is rotated by force in opposite direction of normal rotation then the Torque Motor tries to resist it. (Please see graph below X-axis, which shows T N curves at different voltages) This means that when an energized Torque Motor is driven by an extended source against normal rotation it exerts an almost constant lacking torque on this extended source.

Details :

• Direct Drive motors / DIRECT TORQUE MOTORS for Rapid mixer and granulator (RMG) in pharmaceutical Range : 450 Nm to 3500 Nm (no gearbox)
• Direct Drive motors / DIRECT TORQUE MOTORS for Tablet Presses in Pharmaceutical Range : Upto 2800 Nm (air and water cooling)
• Direct Drive motors / DIRECT TORQUE MOTORS for Extrusio.

Features :

• High torque at low velocities
• Robust bearings
• Optimized torque output with high-pole count efficient electromagnetic design
• Integrated High-resolution sine encoder feedback devices provide exceptional accuracy
• Built-in thermistor provides over-temperature protection
• Compliance to EN and IEC standards for certain frame sizes
• Motors suitable for Zone 21 and Zone 22 in pharma application
• Motor enclosure IP 65. Deep, large spigots for motor covers, bearing caps & oil seals for shaft & bearings to prevent dust ingress in bearings & motor
• Motor winding insulation is of very high quality
• Very good smooth running characteristics
• Energy-efficiency is maintained through wide speed/load range
• Suitable for sophisticated direct drive technology
• Low-noise
• Water cooling in a stainless steel design
• Very good smooth running characteristics

Torque motor is basically an induction motor; but with drooping curves. Torque motor specifies Stall (Lock) torque and no load speed on the name plate. A standard squirrel cage motor tries to maintain the speed as it is loaded while a Torque motor will drop in speed as it is loaded. MARK ELEKTRIKS developed Torque motor as import substitutes in 1971 and has since then supplied over 50000 Torque motors for winding for various other applications.

Application

Motors for winding of following materials are available

• HDPE Tapes, Monofilament- yarns, Box strapping
• All types of extruded plastic films
• Rubberised Fabrics, textiles 20 to 100Hz, 50 to 250 V, flange mounting type.
• Copper Wires from 8 SWG to 43 SWG.
• S.S. Wires/ M.S. Wires
• Strips of Copper, Mild Steel etc.

MARK make TORQUE MOTORS are used in WIRE INDUSTRY for

• Wire Enamelling Machines from 14 SWG to 42 SWG (Both Horizontal & Vertical Type)
• Wire Stranding & Bunching Machines
• Wire Drawing Spooling Machines
• Paper Covered Conductors (Round & Strip) etc

For Wire Drawing Spooling, Bunching, Stranding Machines

• 3 HP, 1.5 Kg-M, 1400 RPM, 132 Frame, 3 Phase, SPFV with Blower
• 5 HP, 2.5 Kg-M, 1400 RPM, 132 Frame, 3 Phase, SPFV with Blower
• 7.5 HP, 3.5 Kg-M, 1400 RPM, 160 Frame, 3 Phase, SPFV with Blower
• 10 HP, 5.0 Kg-M, 1400 RPM, 160 Frame, 3 Phase, SPFV with Blower
• 15 HP, 7.5 Kg-M, 1400 RPM, 180 Frame, 3 Phase, SPFV with Blower
• 20 HP, 10 Kg-M, 1400 RPM, 180 Frame, 3 Phase SPFV with Blower

Range

• Three Phase from 3 kg-cm (0.03 kg-m) to 2000kg-cm (20 kg-m)
• Single Phase from 0.7 kg-cm to 35 kg-cm.
• RPM:From 500 RPM to 3000 RPM (12 pole to 2 pole)

Construction

Available in IEC frame sizes as well as modified mechanical frames for special applications. 'MARK ELEKTRIKS' can also supply one to one replacement to imported motors. Geared Torque Motors with planetory gearboxes are also available. For ganged application such as HDPE Tapes/ Monofilament Yarns etc. one common variac can control all the Torque Motors. This is possible because we manufacture Torque Motors (Motors for winding) for such applications within a close tolerance with similar T/ N Curves.

n Case your requirement is different then you can send us following details and we can design the torque motor for your requirement :

• SWG Range of Wire (Min. & Max.diameter of Wire)
• Spool Size Barrel Dia. X Flange Dia. (Please give these details separately if you want to use different sizes of spools)
• Max.Weight of Wound Spool with Wire
• Min. & Max.Line Speed of Wire to be wound in meters per minute
• Quantity required