ELECTROMAGNETIC CLUTCHES AND BRAKES

ELECTROMAGNETIC CLUTCHES AND BRAKES For oil or dry running, adjustable and self-adjusting types available. Smooth acceleration, Aided by advanced plate design. Low residual torque, High operating Performance. MANUFACTURED BY QUALITY BEYOND CUSTOMER SATISFACTION

BANGALORE INDIA ELECTROMAGNETIC MULTIDISC CLUTCHES Stationary Field Type Slip Ring Type Special Finger Springs For faster disengagement ELECTROMAGNETIC TOOTHED CLUTCHES Slip Ring Type Stationary Field Type

Bangalore INDIA CONTENTS Fore Word 1- General Information......... - Electromagnetic Stationary Field Multidisc Wet Run Clutch..... - Type.01.. Electromagnetic Slip Ring Multidisc Wet Run Clutch with Gear Bush....- Type.0.. Electromagnetic Slip Ring Multidisc Wet Run Clutch.....9- Type.0..1 Electromagnetic Slip Ring Multidisc Wet Run Clutch with Back Slot.....- Type.0.. Electromagnetic Multidisc Wet Run Brake Type,......1-1 Electromagnetic Slip Ring Multidisc Dry Run Clutch Type, ELKa...1-1 Electromagnetic Stationary Field Multidisc Dry Run Clutch, Type, ELSa...1-1 Electromagnetic Multidisc Dry Run BRAKE Type, ELKa... 19- Electromagnetic Fail Safe Brake Spring Loaded Type.1...1- Toothed Profile for driving Bush......- Electromagnetic Slip Ring Toothed Clutch Type.0..1 - Electromagnetic Slip Ring Toothed Clutch with Back Slot......- Type.0.. Electromagnetic Stationary field Toothed Clutch Type.0....9- Electromagnetic Stationary Field Toothed Clutch without Bearing. 1- Type.1. Installation Of Multidisc Clutches and Brakes. Installation Of Toothed Clutches and Brakes Operating Instruction...- Questionnaire........9

ABOUT THE COMPANY PAGE 1 of foray into the world of Power Transmission was made in 19. The company manufactures Electromagnetic Clutches and Brakes for reliable and smooth start. Indian Precision Engineers is one of the leading manufacturers of Electromagnetic Multidisc Clutches / Brakes, Electromagnetic Toothed Clutches, Electromagnetic Fail Safe Brakes in technical Collaboration with Maschinen Fabrik Monninghoff, Germany... having an experience of over Three decades in designing and manufacturing a wide range in different models. Indian Precision Engineers also extends its activities in Designing, Manufacturing of Mechanical Clutches, Safety Clutches, Couplings other special components catering wide range of reputed industries. Commitment to Quality, Reliability, and Precision has ensured Indian Precision Engineers a high profile place among many leading industries. Electromagnetic Multidisc Clutches/Brakes... Toothed clutches are most opted in the field of mechanical transmission all over the world. The ever increasing demand for Automation in Machine Tools have created various applications for this. Mechanical clutches, safety clutches, couplings, free wheel units find numerous applications in engineering sector, machine tools, earth moving equipment, construction machinery, etc.. IPE Clutches / Brake are being extensively used by original Equipment Machine Tools Manufacturers in the country such as M/s. HMT & many others. Our customers also include S.P.M builders, Printing & Packaging industries, Textile Industries etc. It may be of interest for you to note that our Multi disc clutches are supplied with plates having special feature i.e. the outer periphery of outer plate are provided with Finger spring which helps in faster disengagement & minimum residual torque. Our positive drive Toothed Clutches are extensively used in textile machinery, Winches etc. Textile machine L frame manufactured by M/s LMW is one such example. IPE Clutches / Brake have been tested by M/s Central Manufacturing Technology Institute- Bangalore. IPE also undertake manufacturing of clutches/ Brakes equivalent to European, American & Japanese makes. Kindly request you to register our name in your Approved Supplier s list. It would be Pleasure for our Sales & Technical staff to have personal discussions on any of your problems in this field. Thanking you, in anticipation of your valued enquires & assuring you our Best Services at all times.

ABOUT THE COMPANY QUALITY BEYOND CUSTOMER SATISFACTION Regd office: C-, Gurusannidhi, Shankara Park, Bangalore-00 0.INDIA. Phone: +91 00 -. Fax: +91 00-1 E-mail:narsipur.mar@narsipurgroup.com. Works: #1&1, Survey No: 9/1&, Chunchaghatta Main Road, th K.M, Kanakapura Road, Konanakunte post, Bangalore-00 Phone: +91-00 - / 1, Fax: +91-00 -. Email: ipe@narsipurgroup.com Website: www.narsipurgroup.com, www.ipeblr.com PAGE of

GENERAL INFORMATION PAGE of GENERAL INFORMATION Electromagnetic Multidisc Clutches: The Electromagnetic Clutches are of tooth and Multiple Disc type. The multiple-disc type clutches known for their smooth acceleration and high operating performance are divided into magnetic clutches whose discs are surrounded by the field of force and those whose discs are not surrounded by the field of force. Hardened plates with finger springs are provided in both the type of clutches to minimize the residual torque and help in faster disengagement. The former types require no maintenance and are particularly suitable for wet application with high energy exchange. The latter types using Special friction material find use in dry applications where accurate shifting and transfer of a large torque at a low frequency is required. Electromagnetic Toothed Clutches: The Tooth Clutches recommended for their small dimensions, high torques, short operation time, accurate switching and high permissible environment. These maintenance free clutches are to be engaged while at rest or low speed and have no idling torque. Speeds are run in both wet and dry Electromagnetic Brake: The braking of high flywheel inertia is possible by the brakes with large heat capacity and high heat dissipation. The Electromagnetic Fail-Safe Brakes are designed to interrupt the torque transmission in the event of power failure. The braking torque is applied by spring force when the power supply to the coil is interrupted.

GENERAL INFORMATION PAGE of The Electromagnetic Clutch works on the principle of Electromagnetic induction i.e. the engagement and Disengagement is subjected to the laws of induction. The illustrated graph shows the time response of voltage Current, torque and speed from the instant of coil Energization. HERE: Ms = Mu = Mr = Mreq = i = t1 = t = t = t = P = n = k = dynamic Torque (Nm) Static Torque (Nm) Drag Torque (Nm) Torque Required (Nm) Induction Current (milli sec) Engagement time (milli sec) Disengagement time (milli sec) Response delay (milli sec) Rise time (milli sec) Driving Power (kw) Speed of rotation (min-1) Safty factor (1, to ) The Clutch size is determined by using the relation Mreq = P/ nk (Nm) Mreq must be less than or equal to Ms TYPE 01 0 0 0 1 ELKa ELSa TABLE SHOWING ENGAGEMENT AND DISENGAGEMENT TIME SHIFT SPEED-NORMAL(milli sec) Size 1 1 Time t1 0 00 0 0 t 0 0 1 0 0 t1 t t1 t 0 0 0 0 0 0 1 9 1 1 0 t1 t t1 t. 1 1 1 1 0 0 0 0 0 0 00

Electromagnetic Stationary Multidisc Wet Run Clutch TYPE:.01. - V DC Size Torque dyn stat Ms Mu Number of plates 1 1 0 1 0 0 0 00 00 1 0 00 00 00 0 00 1. 0. 0. 1.1 0. 0. 1 1. 1. 1. 0 00 V DC 0 0. 9... 1. 19. 1. 1 0. 0 0 1 9 1 1 0 19 0 1 1 1. 9. 1.... 91 9 ---. 0 1. 1-1 ( min ) (V) (W) Inner Plates Outer Plates Weights Moment of inertia ( Nm ) Max.Speed DC Voltage Power Consumption ( kg ) Magnet Side Armature Side min H Bores Keyway to BS Ød Dimensions ØD H Ød L l -0.1 l1 l l l l l +0. l9 PAGE of - ( kgm ) max * Special Voltage Clutches available on request. 1... 0. 0. 0. 0. * Keyways BS, DIN 1 1 1 9.. 9 1 1 1 1 1 1 1 * Technical Alteration reserved.

CONSTRUCTION AND OPERATION TYPE:.01. - V DC PAGE of CONSTRUCTION (1) Coil Housing () Outer Plate () Armature Plate () Connector () Rotor () Inner Plate (). Carrier () Ball Bearing OPERATION The Stationary Coil Housing (1) is centered over the rotor () by means of bearing ().The Gear bush is pressed into the rotor and which supports inner plate () and armature plate (). Gear bush is bored has a keyway and is pressed directly on to the driving shaft together with the Rotor. Carrier () supports the outer plate and is bolted to the item of machinery with which it must rotate.energization of stationary coil Housing (1) containing a potted coil through the connector () generates a magnetic field which attracts the sliding armature plate ().The Clutch Plates (&) Compressed and driving torque is transmitted. There is no air gap between the sliding armature and clutch plates in engaged position. Permanent air gap exist, obtained by special machining between the Coil Housing (1) and Rotor (). To release the clutch all that is necessary is to switch off the power supply. APPLICATION Engagement or disengagement while running or while at rest. Operation in lubrication environment only. Friction of Steel to Steel Plates. EXAMPLE OF INSTALLATION The Basic Version of Clutch fitted with gear wheel for Fitted with Driven Shaft torque transmission between shaft and gear wheel. NOTE: The Carrier must be provided with a means of axial retention so as not to be affecting the armature airgap. Protect The Coil Housing against side loads to avoid straining the bearings. Carrier () is supplied with pilot bore. Required Mounting hole and finish bore can be made by the user.. ORDER EXAMPLE. Electromagnetic Stationary Multidisc Wet Run Clutch TYPE :.01.1 V.d.c Bore d = mm / Keyway to DIN

Electromagnetic Multidisc Slip Ring Wet Run -- CLUTCH TYPE:.0.. - V DC Size Torque dyn stat Ms Mu (Nm) -1 Max.Speed (min ) DC Voltage (V) Power Consumption Number of plates (W) Moment of inertia H Ød Ø d L Dimensions H 1 1 0 0 0 00 00 1 00 00 00 0 00 00 00 00...... 1. 9. 0. 1 0. 1 1.. 0 0 0 1 9 1 0 1 0 19 1 1 1. 1 9 1 - ( kgm ) Max ØD 1 0 1 1. 1. min Bores Keyway to BS 1 1. 1.0 (kg) Magnet Side Armature Side V DC Inner Plates Outer Plates Weights PAGE of l -0.1 1 9 0 0 l1 1 9 9 l 1 1 l l l * Special Voltage Clutches available on request. * Keyways BS, DIN.. 9 * Technical Alteration reserved.

CONSTRUCTION & OPERATION TYPE:.0.. - V DC PAGE of CONSTRUCTION (1) Coil Housing () Inner Plate () Carrier () Outer Plate () Armature Plate () Slip Ring OPERATION The Coil Housing (1) has Gear Bush which supports the inner plate () and the armature plate (). The Gear bush is bored has a keyway and is pressed directly on to the driving shaft together with the coil housing. Carrier () supports the outer plate () and is bolted to the item of machinery with which it must rotate. Energization of the coil Housing through the Slip Ring() by telescopic Brush (refer page for brush details) generates a magnetic field which attracts the sliding armature plate ().The Clutch Plates (&) Compressed and driving torque is transmitted. To release the Clutch all that is necessary is to switch off the power supply. APPLICATION Engagement or disengagement while running or while at rest. Operation in lubrication environment only. Friction of Steel to Steel Plates. EXAMPLE OF INSTALLATION The Basic Version of Clutch with gear teeth for Torque transmission between shaft and gear wheel. The Clutch should be fitted with the Coil Housing Body on the driving side. The Carrier must be provided with a means of axial retention so as not to be affecting the armature air gap. Carrier must be carefully centered. Carrier () is supplied with pilot bore. Required Mounting hole and finish bore can be made by the user. ORDER EXAMPLE. Electromagnetic Multidisc Slip Ring Wet Run Clutch TYPE :.0.1. V.d.c Bore d = mm / Keyway to DIN

Electromagnetic Multidisc Slip Ring Wet Run -- CLUTCH TYPE:.0..1 --- Volt DC Size Torque dyn stat 00 00 1 0 00 1 1 0.9 1 1. 1.1..0 0 00 V DC.. 1. 0. 0.1 1 0. 1. 1 H (x1.) 1 A x 9 1 A x0 L l -0.1 9. 1. Ms Mu (Nm) -1 (min ) (V) (W) Max.Speed DC Voltage Power Consumption Number of plates Inner Plates Outer Plates Weights (kg) Magnet Side Moment of inertia - Ød1 ØD Dimensions 0 00 00 00 1 00 00. 9 91 1 1 9. 0 0 x10º A x 1 x10º A x 1 xº A x 19 0 xº A 9x9 xº A x 9 0 0 1..... ( kgm ) Armature Side min H Ød Bores max Number of keyways in the hub DIN /1 Multi keyway to DIN 1 1 0 0 PAGE 9 of Ød1 H Ød H9 l1 l l l l * Special Voltage Clutches available on request. 1. 1... 1. 9 1.0 1. 1. * Keyways BS, DIN......0 * Technical Alteration reserved.

CONSTRUCTION & OPERATION TYPE:.0..1 --- Volt DC PAGE of CONSTRUCTION (1) Coil Housing () Inner Plate () Carrier () Bush () Outer Plate () Armature Plate () Slip Ring OPERATION Carrier () is mounted on the coil Housing (1) and which supports the outer plate (). Armature Plate () and Inner Plates () are supported on the Gear Bush which must be supplied by the user (Refere page fpr Gear Bush Tooth Profile). Coil housing (1) is fixed into the Driving shaft and Driven wheel is connected to the gear bush with inner plate and armature plate. Energization of the coil Housing through the Slip Ring () by Telescopic Brush (refer page for brush details) generates a magnetic field which attracts the sliding armature plate ().The Clutch Plates (&) Compressed and driving torque is transmitted. To release the Clutch all that is necessary is to switch off the power supply. APPLICATION Engagement or disengagement while running or while at rest. Operation in lubrication environment only. Friction of Steel to Steel Plates. EXAMPLE OF INSTALLATION The Basic Version of Clutch with gear teeth for Torque transmission between shaft and gear wheel. The Clutch should be fitted with the Coil Housing Body on the driving side. Make provision for armature travel l. Secure gear bush axially. For details of toothing for the gear bush refer page for Toothed profile for driving bush. ORDER EXAMPLE. Electromagnetic Multidisc Slip Ring Wet Run Clutch TYPE :.0.1.1 V.d.c With Bush, Bore d = mm / Keyway to DIN

Electromagnetic Multidisc Slip Ring Wet -- Run Clutch With Back Slot TYPE:.0.. --- Volt DC Size Torque 1 1 0 1 0 0 0 00 00 1 00 00 00 0 00 00 00 1. 1 00 V DC 9 1. 1. 1. 1..... 19. 9. 1. 1. 9 0.1 0.1 9 0. 1. 1. 1 19 19 Ød Ø d1 1 1 0 0 Ø d 9 1 1 10 1 1 Ø d +/-0. 0 1 1 M 1 M M 9. M M. M 9 M. M 0 1 1 19 9 9 Dyn Stat Ms Mu (Nm) -1 (min ) (V) (W) Max.Speed DC Voltage Power Consumption Number of plates Inner Plates Outer Plates Weights (kg) Magnet Side - Moment of inertia ( kgm ) Armature Side ØD k d L +0. Dimensions PAGE of l l1 l l l l +0.1 l H l l 1 1.. 1 1 1. 1.... 1 1 1 1. 1... * Special Voltage Clutches available on request. * Technical Alteration reserved.

CONSRTUCTION & OPERATION TYPE:.0.. --- Volt DC PAGE of CONSTRUCTION (1) Coil Housing () Inner Plate () Carrier () Outer Plate () Armature Plate () Slip Ring OPERATION Carrier () is mounted on the coil Housing (1) and which supports the outer plate (). Armature Plate () and Inner Plates () are supported on the Gear Bush which must be supplied by the user (Refer page for Gear Bush Tooth Profile). Coil housing (1) is fixed into the Driven Wheel and Driving shaft is connected to the gear bush. Energization of the coil Housing through the Slip Ring () by telescopic Brush (refer page for brush details) generates a magnetic field which attracts the sliding armature plate ().The Clutch Plates (&) Compressed and driving torque is transmitted. To release the Clutch all that is necessary is to switch off the power supply. APPLICATION Engagement or disengagement while running or while at rest. Operation in lubrication environment only. Friction of Steel to Steel Plates. EXAMPLE OF INSTALLATION The Basic Version of Clutch with gear teeth for Torque transmission between shaft and gear wheel. The Clutch should be fitted with the Coil Housing Body on the driving side. The driving key must be safeguarded against centrifugal forces. Make provision for armature travel l. Secure gear bush axially. For details of toothing for the gear bush Refer data sheet of Toothed profile for driving bush Page No... ORDER EXAMPLE. Electromagnetic Multidisc Slip Ring Wet Run Clutch with Back Slot TYPE :.0.. V.d.c

Electromagnetic Multidisc Wet Run BRAKE TYPE:... --- Volt DC Size Torque Dyn Stat Ms Mu (Nm) -1 Max.Speed (min ) DC Voltage (V) Power Consumption (W) PAGE 1 of 1 1 0 1 0 0 0 00 00 1 00 00 00 0 00 00 00 00 V DC Inner Plates 1 1 9 Outer Plates 1.0 1... 9.. 1. 0.1 0.1 9 0. 1. 1. 1 19 1 1 Number of plates Weights (kg) - Moment of inertia (Armature side) ( kgm ) ØD Ød Ød Dimensions k 1 1 0 0 Ød 9 1 1 10 1 1 Ød 0 1 1 Ød M 1 1 19 M M 9. M 9 M. M 9 M. 1 9 M 0 1 1 L l +0. l1 l l l l l +0. l H l 1.. 1 1... 9. 9 1.... 1 1 1.0 1. 1... * Special Voltage Brakes available on request. * Brakes with 0mm leads available as option. * Technical Alteration reserved

CONSTRUCTION & OPERATION TYPE:... --- Volt DC PAGE 1 of CONSTRUCTION (1) Coil Housing () Inner Plate () Carrier () Outer Plate () Armature Plate () Connector OPERATION Carrier () is mounted on the coil Housing (1) and which supports the outer plate (). Armature Plate () and Inner Plates () are supported on the gear Bush which must be supplied by the user (Refere Page for Gear Bush tooth Profile). Coil housing (1) is fixed into the Machine Housing (stationary Part) and load shaft is connected to the gear bush. Energization of the coil Housing through the Connector () generates a magnetic field which attracts the sliding armature plate ().The Clutch Plates (&) are thus Compressed and the braking torque is transmitted. To release the brake, all that is necessary to switch off the power supply. APPLICATION Braking and release while running or at rest. Operation in lubrication environment only. Friction of Steel to Steel Plates. EXAMPLE OF INSTALLATION The Basic Version of BRAKE with Clutch and gear wheel. The Coil Housing of the brake is secured and located centrally to the end face of the housing. A slot is provided on coil housing back to help in locating the Coil Housing. Make provision for armature travel l. Secure gear bush axially. For details of toothing for the gear bush refer data sheet of Toothed profile for driving bush Page No... ORDER EXAMPLE. Electromagnetic Multidisc Slip Ring Wet Run BRAKE TYPE :... V.d.c

Size Oil Running Torque Dry Running Oil Running Dry Running Max.Speed DC Voltage Power Consumption Weight -1 (min ) (V) (W) (Kg) Magnet Side Moment of Inertia Ms dyn Mu stat (Nm) Ms dyn Mu stat - ( kgm ) Armature Side Inner Plate ( Nos ) Electromagnetic Multidisc Slip Ring --Dry Run CLUTCH TYPE: ELKa --- Volt DC PAGE 1 of. 0 1 0 0 0 0 00 0 00 1 1 1 00 00 0 00 00 0 00 0 1 1 0 00 00 0 10 0 0 0 00 0 0 1 1. 1.9...1.. 0 00 0 00 V DC.1. 1.. 1... 1 1 0 0.9 0. 1.1.. 1... 1 1 0 0 0 9 0 M xm 0.. 0 M xm 0 0... 0 M xm 0. 1 9 1 1 M xm 0. 1 1 1 1 M xm 0.. 19 1 10 M xm 0.9 1 1 0 1 1 1 M xm 1 1 9 10 9 10 1 M xm 1 0 0 1 M xm 1 1.1 9 1 M XM1 1 1. 9......... Number Of Plates Outer Plate Bores H Ød Dimensions ( mm ) ( Nos ) Min / Keyway to BS Max ØD H Ø d1 Ø d Ø d Ø d9 Ød Ød1 DIN 9 Ød1 DIN 9 L l l l1 l l * Special Voltage Clutches available on request. * Keyways BS, DIN * Technical Alteration reserved.

CONSTRUCTION & OPERATION TYPE: ELKa --- Volt DC PAGE 1 of CONSTRUCTION (1) Coil Housing () Inner Plate () Carrier () Adjustable Nut () Outer Plate () Armature Plate () Slip Ring OPERATION The Coil Housing (1) has Gear teeth on its outer periphery, which supports the inner plate () and the armature plate (). The Coil Housing is bored has a keyway and is pressed directly on to the driving shaft. Carrier () supports the Outer Plate () and is bolted to the item of machinery with which it must rotate. Energization of the coil Housing through the Slip Ring () by Telescopic Brush (refer page for brush details) generates a magnetic field which attracts the sliding armature plate ().The Proper positioning of the the adjustable nut () determines the airgap between coil housing face and armature face. The Clutch Plates are thus compressed and driving torque is transmitted. To release the Clutch, all that is necessary is to switch off the power supply. APPLICATION Engagement or disengagement while running or while at rest. Operation in Dry or lubrication environment. Friction of Steel to Sintered Plates. EXAMPLE OF INSTALLATION The Basic Version of Clutch combination with flexible coupling. Always install the clutch with the magnet body on the driving side.armature uppermost when installing clutch vertically. Clutch with negative slipring: external earth connection. Connection of two shafts only by means of flexible coupling. Carrier () is supplied with pilot bore. Required Mounting hole and finish bore can be done by the user. Carefully maintain d dimension in machine flange or gear wheel. ORDER EXAMPLE. Electromagnetic Multidisc Slip Ring Dry Run Clutch TYPE : ELKa V.d.c Bore d = mm / Keyway to BS

Size Oil Running Torque Dry Running Max.Speed Oil Running Dry Running DC Voltage Power Consumption Weight Magnet Side Moment of inertia Armature Side Ms dyn Mu stat (Nm) Ms dyn Mu stat -1 (min ) (V) (W) ( Kg ) - Electromagnetic Multidisc Stationary Dry Run CLUTCH TYPE: ELSa --- Volt d.c PAGE 1 of. 0 0 1 0 1 0 0 0 00 00 1 1 00 0 00 0 00 1 1 0 00 0 0 10 0 0 0 00 0 0 1 1. 1.0 9.1 1...1.. 0 00 0 V DC 1 0. 1.. 9 1. 0.. 1. 1 1 0.9 1 0. 1 1.1.. 1... 0 0 0 9 0 M xm 0. 0 M xm 0 0... 0 0 M xm 0.. 1 9 1 1 M xm 0.. 9. 1 1 1 1 M xm 0... 0 19 1 0 10 M xm 0.. 1 1 1 1 1 M xm 1 0. 9. 1. 10 10 1 M xm 0.. 1 0 0 1 M xm 1 0.. 1. 9 1 1 M xm1 1 0.. 1 ( kgm ) Inner Plates Number of plates Outer Plates Min H Bores Ød / Keyway to BS Max ØD H Ø d1 Ø d Ø d Ø d9 Ø d Dimensions Ø d1 DIN 9 Ø d1 L l l l l l9 * Special Voltage Clutches available on request. * Keyways BS, DIN * Technical Alteration reserved.

CONSTRUCTION & OPERATION TYPE: ELSa --- Volt d.c PAGE 1 of CONSTRUCTION (1) Coil Housing () Outer Plate () Armature Plate () Adjustable Nut (9) Bearing () Rotor () Inner Plate () Carrier () Connector OPERATION The Rotor () has Gear teeth on its outer periphery, which supports the inner plate () and the armature plate (). The Rotor is bored has a keyway and is pressed directly on to the driving shaft. Carrier () supports the Outer Plate () and is bolted to the item of machinery with which it must rotate. Coil Housing (1) potted with coil is centered over the rotor by means of ball bearing.. Energization of the coil Housing through the Connector () generates a magnetic field which attracts the sliding armature plate ().The Proper positioning of the the adjustable nut () determines the airgap between coil housing face and armature face. The Clutch Plates are thus compressed and driving torque is transmitted. To release the Clutch all that is necessary is to switch off the power supply. APPLICATION Engagement or disengagement while running or while at rest. Operation in Dry or lubrication environment. Friction of Steel to Sintered Plates. EXAMPLE OF INSTALLATION The Basic Version of Clutch combination with Pulley. Armature plate must be uppermost when installing clutch vertically. Carefully maintain d dimension in machine flange or gear wheel. Install the clutch in such a way that the adjusting nut is readily accessible. ORDER EXAMPLE. Electromagnetic Multidisc Stationary Dry Run Clutch TYPE : ELSa V.d.c Bore d = mm / Keyway to BS

Size Oil Running Torque Dry Running Max.Speed Oil Running Dry Running Ms dyn Mu stat (Nm) Ms dyn Mu stat -1 (min ) DC Voltage (V) Power Consumption (W) Weight ( Kg ) - Moment of Inertia ( kgm ) Armature Side Inner Plate ( Nos ) Number Of Plates Outer Plate ( Nos ) Min H Bores Ød Max ØD H Ø d1 Ø d H Ø d Max Ø d Max Ø d Ø d Ø d9 Ød Dimensions ( mm ) Ød1 DIN 9 Ød1 Ød1 L Electromagnetic Multidisc Dry Run BRAKE TYPE: ELKa --- Volt DC PAGE 19 of. 0 1 0 0 0 0 00 0 00 1 1 1 00 00 0 00 00 0 00 0 1 1 0 00 00 0 10 0 0 0 00 0 0 1 1...1. 0 00 0 00 V DC.1. 1.. 1 0 0.9 0. 1.1.. 1... 1 1 0 0 0 9 0 1 M M xm. 0. 9 0 M M xm 0.. 0.. 9 0 M M xm 0.. 9 1 9 9 1 1 M M xm 0.. 1 1 1 1 M M xm. 0.. 1 19 1 1 1 10 M M xm 0.9. 1 1 1 0 1 1 1 1 1 M M xm 1 9 1. 1 0 10 9 1 10 1 10 1 M M xm. 1. 1 0 1 1 1 M M xm 1. 1.1. 9 1 M M1 XM1 1 1.. l l l l l l Max * Special Voltage Brakes available on request. * Keyways BS, DIN * Technical Alteration reserved.

CONSTRUCTION & OPERATION TYPE: ELKa --- Volt DC PAGE of CONSTRUCTION (1) Coil Housing () Inner Plate () Carrier () Connector () Outer Plate () Armature Plate () Adjustable Nut OPERATION The Coil Housing (1) has Gear teeth on its outer periphery, which supports the inner plate () and the armature plate (). The Coil Housing is fixed to the machine housing and which should be stationary. Carrier () supports the Outer Plate () and is bolted to the item of machinery with which it must rotate. Energization of the coil Housing through the connector () generates a magnetic field which attracts the sliding armature plate ().The Proper positioning of the the adjustable nut () determines the airgap between coil housing face and armature face. The Clutch Plates are thus compressed and braking torque is transmitted. To release the brake, all that is necessary is to switch off the power supply. APPLICATION Braking and release while running or at rest. Operation in Dry or lubrication environment. Friction of Steel to Sintered Plates. EXAMPLE OF INSTALLATION Combination of CLUTCH and BRAKE Type ELKa The Coil Housing of the brake is secured and located centrally to the end face of the housing. Install the brake in such a way that the adjusting nut is readily accessible. Carrier () is supplied with pilot bore. Required Mounting hole and finish bore can be done by the user. ORDER EXAMPLE. Electromagnetic Multidisc Dry Run BRAKE TYPE : ELKa V.d.c Bore d = mm, d = 0mm

Size Torque Dynamic DC Voltage Power Consumption Weights Electromagnetic Multidisc Fail Safe BRAKE (Spring Loaded BRAKE) TYPE:.1. --- Volt DC Ms (Nm) (V) (W) (approx) (kg) Max H Bores Ød Min - Moment of inertia (Inner GearBush side) ( kgm ) f ØD Ø d1 ØC H Ø d Ø d L l1 l l l l * Brakes with 0mm leads available as option. * Special Voltage Brakes available on request. PAGE 1 of 1 1. 1. 0 10 0.1 9. 0. V DC. 0 0. 1. 1. 0 0. 1 1 1 1 9 1 10 19 1 1 10...... 1 9 1 1 1. 0......... 1. 1. 1. 0 * Brakes available for both WET & DRY Operation. * Keyways BS, DIN * Technical Alteration reserved.

CONSTRUCTION & OPERATION TYPE:.1. ---- Volt DC PAGE of CONSTRUCTION (1) Coil Housing () Inner Plate () Adjustable Nut () Driving Bush (9) Connector () Outer Plate () Armature Plate () Locking Plate () Screw Bush ()Compression Spring OPERATION The Coil Housing (1) is the fixed part consisting Armature Plate (), Outer Plate (), Adjustable Nut () and Locking Plate (). Gear Bush () supports the Inner Plate and which rotates with the Shaft. Numbers of springs () are placed in the coil housing on suitable PCD. Small air gap will be maintained between Coil housing face and armature plate face. When coil Housing potted with the coil energized by the connector (9), generates a magnetic field which attracts the sliding armature Plate (), while compressing the springs () the clutch plates ( & ) are released and the brake is thus released. To apply the brake, it is only necessary to switch off the power supply, the sliding armature pushed back by the spring presses the clutch plates (& ) and transmits the braking torque. APPLICATION Braking and release while running or at rest. Braking safety in case of an accidental power failure. STEEL TO SPECIAL FRICTION LINING for dry running.the plates must be kept free of lubricants. STEEL TO STEEL for Wet Operation. EXAMPLE OF INSTALLATION Centering On Ø d H Centering On Ø D f ORDER EXAMPLE. Electromagnetic Multidisc Fail Safe BRAKE For Wet Running TYPE :.1.1 V.d.c Bore d = mm / Keyway BS

TOOTHED PROFILE FOR DRIVING BUSH PAGE of All necessary data have been given in page No. in order to facilitate machining of gear teeth for Driven Gear Bush (customer components), which is applicable to.0..1,.0.., &.... Z M α dk df x = = = = = = No.of Teeth Module Pressure Angle ( ) Outside Diameter Root Diameter Pitch Error

TOOTHED PROFILE FOR DRIVING BUSH PAGE of TOOTH PROFILE FOR TOOTHED DRIVING BUSH (Drive Bush for inner Clutch Plates) Size 1 1 1 INDEX: No.of teeth Module Tip dia Root dia Tooth Width Z m dk df Wn * *1 Span Measurement over n teeth 1...9. 1... 1. 1. 0..9 19. 0...01...1....1..... 9..9.. 1 9.1. Pitch diameter do = zm; Pressure angle= Outer toothing hadness of bush teeth 9-HRC;0. to 0. deep. (1) teeth only for sizes 1 () 1 teeth only for sizes Pitch error Teeth length x lz -0.1 +0. +0.1 +0.1 +0. +0. +0. +0. -0. 9. 1. 1. 1...

Size Torque Mu (Nm) DC Voltage (V) Power Consumption Watt (W) Weight approx.. (kg) Magnet Side - Moment of inertia ( kgm ) Armature Side Ø D1/D A A1 (Min) H Bore Ød (Max) H Multi Keyway /Spline Ød Electromagnetic Slip Ring Toothed Clutch TYPE:.0.. 1 - Volt DC 0 1 1 00 1 0.9 0.9 1. 1..1. 1..0 0. 0. 1.. 9 1 1 0 1 0. H 0 V DC 9.. PAGE of 00 00 1 000. 1. 1 1. 0 19 1 0 1. 0. 0 Ax Ax Ax Ax Ax Ax Ax Ax (x1.) x x0 x x x 9x9 x 1x1 Ød +0. 0 9 1 1 Ød M M M M M M M M M 0 1 10 Ød ±0.1 0 0 1. Ød1 f 9. g. h +0.0 1. 1.. k..... n 9. 1 1. 1. y 0. 0. 0. 0. 0. 0. 0. 0. 0. * The holes for attaching the adapter plate to the item of machinery must be made by the customers. * Special Voltage Clutches available on request. * Keyways BS, DIN * Technical Alteration reserved.

CONSTRUCTION & OPERATION TYPE:.0.. 1 - Volt DC PAGE of CONSTRUCTION (1) Coil Housing () Armature Drive Ring () Adapter Plate () Compression Spring () Drive Ring () Armature Plate () Slip Ring () Screw OPERATION This Toothed clutch comprises a coil Housing (1) containing a potted coil, a face teeth drive ring () and slip ring () mounted on the coil housing outside. Coil Housing is bored has a keyway and is pressed directly on to the driving shaft. This part is to be preferred as the driving part of the clutch. Armature drive ring () is press fitted on armature plate () and these two slides on spur gear provided on adapter plate (). Adapter plate is bolted to the item of machinery with which it must rotate. Adapter Plate is supplied without mounting holes. Required Mounting hole and finish bore can be made by the user. Spring () and screw () ensure that the two toothed rings are kept apart when the clutch is de energized. Face Teeth are machined on faces of the drive ring and armature drive ring. Energization of the coil through slip ring by telescopic brush (refer page for brush details) generates a magnetic field which attracts the sliding armature plate and armature drive ring. The face teeth mesh together and this allows the driving torque to be transmitted. For disengagement all that is necessary is to switch off the power supply. Armature drive ring is retracted into rest position by means of the screw and springs. APPLICATION Engagement at Rest or at a relative speed of +/-r.p.m of the shafts but may be disengaged at any speed or under load. Nil residual torque. Operation is possible in both wet and dry condition. EXAMPLE OF INSTALLATION The Basic Version of Clutch for Torque transmission between shaft and gear wheel. The Clutch should be fitted with the Coil Housing Body on the driving side. An adapter plate is bolted and pinned to the gear wheel for transferring the torque from the clutch to the gear wheel. ORDER EXAMPLE. Electromagnetic Slip Ring Toothed Clutch TYPE :.0..1 V.d.c Bore d = mm / Keyway to DIN

Electromagnetic Slip Ring Toothed Clutch - With Back Slot TYPE:.0.. - VDC PAGE of Size 1 1 1 Torque Mu (Nm) 0 00 0 00 00 000 DC Voltage (V) V DC Power Consumption (W) 1 9 9 1 Weight approx.. (kg) 0.9 1..... 1. Magnet Side 0.9 1.. 9 1. 0 - Moment of inertia ( kgm ) 0. 0. 1...0 9 Armature Side Ø D1/D 9 1 1 19 A 9 0 A1 0. 0 9. 9. ØD 9 1 1 10 1 1 Ød1 1 0 1 Ød K 1 1 1 Ød +/-0.1 0 1 1 0 Ød M M M M M M M M M Ød+0. 0 0 1 1 1 Ød M M M M M M M M M Ød±0.1 0 1 10 f. g. 9 1 h +0. 1 k.. 1 1 1. 1. 1. I 9 1 1 1 1 u+0.1.. H V 1 1 y 0. 0. 0. 0. 0. 0. 0. 0. 0. n 9. 1 1. 1. * The holes for attaching the adapter plate to the item of machinery must be made by the customers * Special Voltage Clutches available on request. * Keyways BS, DIN * Technical Alteration reserved.

nnnn n CONSTRUCTION (1) Coil Housing () Drive Ring () Armature Drive Ring () Armature Plate CONSTRUCTION & OPERATION TYPE:.0.. - VDC () Adapter Plate () Slip Ring PAGE of () Compression Spring () Screw OPERATION: This Toothed clutch comprises a coil Housing (1) containing a potted coil, a face teeth drive ring () and slip ring () mounted on the coil housing outside. Coil Housing is bolted to the machinery part with which it must rotates. Armature drive ring () is press fitted on armature plate () and these two slides on spur gear provided on adapter plate (). Adapter plate is connected to the driving shaft by means of additional flange. Adapter Plate is supplied without mounting holes. Required Mounting hole and finish bore can be made by the user. Spring () and screw () ensure that the two toothed rings are kept apart when the clutch is de energized. Face Teeth are machined on faces of the drive ring and armature drive ring. Energization of the coil through slip ring by telescopic brush (refer page for brush details) generates a magnetic field which attracts the sliding armature plate and armature drive ring. The face teeth mesh together and this allows the driving torque to be transmitted. For disengagement all that is necessary is to switch off the power supply. Armature drive ring is retracted into rest position by means of the screw and springs. APPLICATION: Engagement at Rest or at a relative speed of +/-r.p.m of the shafts but may be disengaged at any speed or under load.nil residual torque. Operation is possible in both wet and dry condition. EXAMPLE OF INSTALLATION The Basic Version of Clutch for Torque transmission between shaft and gear wheel. This version of the toothed clutch is designed so that the magnetic body also serves to accommodate the bearings. ORDER EXAMPLE. Electromagnetic Slip Ring Toothed Clutch with Back Slot TYPE :.0.. V.d.c

Size Torque Max Speed Electromagnetic Stationary Toothed Clutch TYPE:.0. --- Volt DC Mu Wet running Dry running DC Voltage Power Consumption Weight approx.. Magnet Side Moment of inertia Armature Side (Nm) -1 (min ) (V) (W) (kg) - 0 00 0 00 00 1 0 0 00 1 00 0 00 1. 0. 0.. 1.. 00 10 V DC 1 9. PAGE 9 of 00 00 10 00 0 00 0 0 1 000 0 0 1 1 10.. 1. ( kgm ) 0.1 0. 1.1.. 19..0 0.0 0.0 min 0 0 H Bores Ød Max 0 ØD1 9 1 1 19 ØD 0 9 9 19 Ød 9 1 Ød M M M M M M M M M Ød +0.1 0 10 A 9 0 9 1 9 A1 9 9. 99 1.. g -0. 1 1 h 99 1 1 1 k 9 l. 0 1 9 1 n 9. 1 1. 1. O +0. p y 0. 0. 0. 0. 0. 0. 0. 0. 0. * The holes for attaching the adapter plate to the item of machinery must be made by the customers. H * Bore & Keyways as per customer requirement please Confirm :Ø d,v,w * Special Voltage Clutches available on request. * Keyways BS, DIN * Technical Alteration reserved.

CONSTRUCTION & OPERATION TYPE:.0. --- Volt DC PAGE of CONSTRUCTION (1) Coil Housing ()Armature Drive Ring () Adapter Plate () Compression Spring (9) Bearing () Rotor () Armature Plate () Connector () Screw OPERATION The Stationary Coil Housing (1) potted with the coil is centered over the rotor () by means of bearing (9).The Rotor is bored has a keyway and is pressed directly on to the driving shaft. Armature drive ring () is press fitted on armature plate () and these two slides on spur gear provided on adapter plate (). Adapter plate is bolted to the item of machinery with which it must rotate. Adapter Plate is supplied without mounting holes. Required Mounting hole and finish bore can be made by the user. Spring () and screw () ensure that the two toothed rings are kept apart when the clutch is de energized. Face Teeth are machined on faces of the rotor and armature drive ring. Energization of the stationary coil by the terminals generates a magnetic field which attracts the sliding armature plate and armature drive ring. The face teeth mesh together and this allows the driving torque to be transmitted. For disengagement all that is necessary is to switch off the power supply. Armature drive ring is retracted into rest position by means of the screw and springs. APPLICATION Engagement at Rest or at a relative speed of +/-r.p.m of the shafts but may be disengaged at any speed or under load. Nil residual torque. Operation is possible in both wet and dry condition. EXAMPLE OF INSTALLATION The Basic Version of Clutch for Torque transmission between two shaft ends. The stationary body is located using a lug. Rotor is inserted in to the driving shaft. An adapter plate is bolted in to the flexible coupling to transfer torque to the driven shaft. ORDER EXAMPLE. Electromagnetic Stationary Toothed Clutch TYPE :.0.1 V.d.c Bore d = mm / Keyway to DIN

Size Torque Max Speed DC Voltage Power Consumption Magnet Side Moment of inertia Armature Side Weights Electromagnetic Stationary Toothed -------- Clutch Without Bearing TYPE:.1. --- Volt DC 0 00 0 0 0.1 1 1 00 0 00 V DC. 1.9. 9... 0.. 1...1.. 0 9. 1. 0 0 9 1 1 1. 0 0 0 0 9 Dimensions 9 1 x. x. x. x9 xm xm xm xm 1... l -0.1.. l1... l.. l.. l ±0.1 0. 0. 0. 0. l ±0.1 0. 0. 0. 0. The holes for attaching the adapter plate to the item of machinery must be made by the customers. 0 1 19 0 1 10 x9 xm. 1. 0. 0. 0 19 9 1 x9 xm 1. 1.0 0. Bores Mu -1 (min ) (Nm) (V) (W) - 0 00 0. 0. 0. 1. PAGE 1 of ( kg m ) [kg] min H Ød max ØD ØD1 H Ød1 Ød H Ød Ød Ød Ød Ød1 Ød L * Special Voltage clutches available on request. reserved. * Keyways BS, DIN * Technical Alteration

CONSTRUCTION & OPERATION TYPE:.1. --- Volt DC PAGE of CONSTRUCTION (1) Coil Housing () Drive Ring () Armature Drive Ring () Armature Plate () Adapter Plate () Lead Wire () Compression Spring () Screw (9) Rotor OPERATION The Stationary Coil Housing (1) potted with the coil is centered over the rotor () by means of mounting flange. The Rotor is bored has a keyway and is pressed directly on to the driving shaft. Drive Ring () is press fitted on rotor. Armature drive ring () is press fitted on armature plate () and these two slides on spur gear provided on adapter plate (). Adapter plate is bolted to the item of machinery with which it must rotate. Adapter Plate is supplied without mounting holes. Required Mounting hole and finish bore can be made by the user. Spring () and screw () ensure that the two toothed rings are kept apart when the clutch is de energized. Face Teeth are machined on faces of Drive Ring and armature drive ring. APPLICATION Engagement at Rest or at a relative speed of +/-r.p.m of the shafts but may be disengaged at any speed or under load. Nil residual torque. Operation is possible in both wet and dry condition.

INSTALLATION TYPE:.1. --- Volt DC EXAMPLE OF INSTALLATION Centering of Clutch Housing must be done with care so that the housing does not touch the rotating rotor. MOUNTING TOLERANCES AND ALIGNMENT FOR CONNECTING PARTS. ORDER EXAMPLE. Electromagnetic Stationary Toothed Clutch Without Bearing TYPE :.1. V.d.c Bore d = 0mm / Keyway to DIN PAGE of

INSTALLATION PAGE of INSTALLATION OF MULTIDISC CLUTCHES AND BRAKES 1. The Clutches should be thoroughly cleaned before fitting.. a) It is very much essential that the clutch is installed by the use of pressure only and not by hammering it into position. Apply pressure at C or D and never at A or B. b) The class of fit for the shaft should always be between h and j. c) When fitted, the clutch body must run true both axially and radially.. a) The discs must be assembled in such a manner that the clutch body and the armature plate are in contact with a disk which revolves with these components. b) The expander springs of the outer disc must bear against the surface of the adjacent outer disc. c) The outer plates are arranged in such a way that the expander springs are facing the armature plate and are out of phase with one another by º. d) The last outer plate is assembled in such a way that the expander springs are facing the coil housing and are out of phase with the previous plate by º.. When the magnet body is pressed on to the shaft, care must be taken to avoid burr. All sharp edges must be rounded off.. The gap between the two halves of the clutch should be maintained as per catalogue very strictly.. A multiple disc slipring clutch (type with drive transmitted from inner to outer plate) must not be used as a brake with the magnet body stationery since the dirt build up on the slip Ring will cause short circuit. In this type of clutch the outer carrier is supplied with a pilot bore and arrangements for centering and attachment should be done by the customer. If necessary, the carrier must be bolted and pinned to its mating part. The pilot provided on the carrier can be turned to any diameter required. The bore is ground to facilitate easy mounting of a bearing. While turning care should be taken to fix the carrier true with respect to the bore.. In a stationary field type of clutch the maximum speed permitted is determined by the maximum speed permitted for the bearings.. The restraining device (holding the coil housing) which prevents the magnet body from rotating must not cause any axial or radial distortion so as to load the bearings in a stationery type of clutch. 9. While mounting two stationery field clutches back to back a small space should be left between the units for the oil to reach the bearings.. In a stationery field clutch the air gap between stator and rotor is very critical. Hence, it should never be dissembled. Vertical Installation: If the clutch or the brake is to be installed vertically, then the armature disc should be at the bottom. The disc clearance should be reduced to 0.mm to reduce the engagement time.

INSTALLATION PAGE of INSTALLATION OF TOOTHED CLUTHCES 01. The Positive type Toothed Clutches can transmit a higher torque (torque through profiled teeth) than a multi-disc clutch of the same size. High speeds are possible and are maintenance free. 0. The clutches should be thoroughly cleaned before assembly. 0. They should be engaged only while at rest or at a relative speed of ± r.p.m. of the shafts but may be disengaged at any speed or under load. 0. It is very much essential that the clutch is installed by the use of pressure only and not hampering it into position. Apply pressure at C or D and never at A or B. 0. The class of fit for the shaft should always be h to j. 0. It is very important that the clutch coil housing and Armature disc is properly centered and located axially. The maximum radial and axial run-out permitted is 0.0mm. 0. When the clutch body is pressed onto the shaft, care must be taken to avoid burr. All sharp edges must be rounded off. 0. The Armature Plate must move very freely in the axial direction. 09. Ensure that the screws on the armature plate are fully tightened in position.. The gap between the two halves of the clutch should be maintained as per catalogue very strictly.. In a stationery field type of clutch the maximum speed permitted is determined by the maximum speed permitted for the bearings.. The restraining device (holding the coil housing) which prevents the magnet body from rotating must not cause any axial or radial distortion so as to load the bearings in a stationery type of clutch. 1. While mounting two stationery clutches back to back, a small gap should be left between the units for the oil to reach the bearings. 1. A radial gap of mm is maintained between the shaft and the armature plate to prevent magnetic flux leakage into the shaft. 1. The drive motor and the clutch should never be energized at the same instant. 1. Both Wet and Dry operation is possible. 1. In case the clutch is installed vertically then the armature disc clearance should reduced to 0.mm to reduce the engagement time. Ensure armature plate is at the bottom. The toothed Clutches can be supplied with different tooth forms continuous engagement (Fig A & B) Fixed point engagement ( Fig D). Unidirectional engagement ( Fig.C). 1. The tooth clutches are provided with brass drive rings to facilitate easy replacement of the drive rings and for its non-magnetic property. 19. The stationery field type of clutches should never be dissembled since the air gap between the stator and rotor is very critical.

OPERATING INSTRUCTIONS PAGE of OPERATING INSTRUCTIONS LUBRICATION : 1. Clutches with discs in the Magnetic circuit can only be operated wet.. Splash or internal lubrication is recommended for the clutches and Brakes. For splash lubrication it is advisable to immerse 1/th of the clutch in oil.. The dark colour of the oil due to the high loading of the clutch is Quite harmless.. The intervals between oil changes depend on the operating condition of the clutch, the oil quantity, oil temperature etc.. The oil used should have the following properties : a) High heat and aging resistance. b) Negative electrolytic properties. c) Low content of solids. d) Good conductivity and cooling. e) Viscosity of 1 mm/s (1cSt). The oil flow rate should be approximately 0.1 to 0. it/min/clutch. The following oils are recommended: Supplier B.P. Castrol ESSO MOBIL SHELL INDIAN OIL Type Cabol Cabol Perfecto T Hypsin AWS G Esstic Teresso EP NUTO H VAC HLP D-T-E Oil Light Hydrol Servosystem HLP (N) DRY OPERATION 1. Adequate ventilation should be provided.. Corrosive environment should be avoided.. Moist environment should be totally avoided.

OPERATING INSTRUCTIONS PAGE of TELESCOPIC BRUSHES 1. Brushes must be connected to the positive pole of supply.. For dry running, carbon brushes are adequate.. For wet running, bronze gauze wire brush should be used.. Colour code is used for matching before replacement of brushes.. The maximum permitted operating speeds of slipring type of clutches depend on the rubbing velocity permitted. For the slipring type operating wet, velocities above m/s requires an additional dummy brush. A dummy brush is also required at lower rubbing velocities for constantly varying current. Higher slipring velocities are permitted with dry operation.. Proper installation with minimum vibration is required for long life.in case the brushes are not screwed directly into the machine housing; They must be supported by strong bolted brackets on each side.. Brushes should never be fitted into the oil sump since the danger of short circuits exists through the bridging by metal particles.. The brushes should be checked for undue wear once every three Months. 9. Brushes of standard installation lengths can be expected to have a longer service life than the long type owing to their least tendency to oscillate.. Sparks between the brush and the slipring should be avoided at all Cost since it will produce a pitted surface.. In case the slipring becomes pitted or grooved they can be reground to a depth of 0.mm (diameter).. It is essential to ensure that a good contact between the clutch body and the machine housing or the negative pole is maintained.

OPERATING INSTRUCTIONS PAGE of POWER SUPPLY 1. The nominal voltage for clutches should be V.d.c (± %).. To minimize the line losses in voltage the power pack must be operated with maximum load possible in service.. The sparks which tend to occur between the relay contacts, due to the inductive load when the coil is deenergized, should be prevented by using a spark quenching capacitor as in fig.a. A high self-induced voltage is produced at the time of disengagement of Clutch or brake. This can damage the isolators or relays. Suitable surge-protection devices (varistores) should be used as shown in fig.b.. Rapid engagement of the clutch or brake is possible by connecting a resister in series as shown in fig..c.. Rapid disengagement of clutch of brake is possible by connecting a Capacitor in parallel as shown in fig.d.. Faster engagement of the clutch or brake can be achieved by applying a pulsed voltage up to three times the rated voltage.

QUESTIONNAIRE PAGE 9 of QUESTIONNAIRE FOR THE APPLICATION OF CLUTCHES AND BRAKES 1. Type of drive unit: Electric Motor ( ) I.C.Engine. Capacity and speed of prime mover: Type. Type of drive machine: Lathe. Type of drive required: Feed Gear Transverse Gear ( ( ( ( ) Others KW min-1 ) Milling Machine ( ) Others ) ) Main drive Others ( ). Maximum torque to be transmitted by the clutch: P (KW) T= P/n n (min-1) Nm. Speed of the clutch before engagement: min-1 min-1 n1 = speed of input shaft n = speed of output shaft min-1. Speed of the clutch after engagement:. Clutch engaged at Zero rpm : Yes ( 9. Clutch engaged : Under load ( ) ) No ( ) Without Load ( ).Acceleration time required : Sec. Number of engagements per hour / day :.Moment of inertia (j) of all masses to be accelerated - or decelerated referred to Clutch shaft 1. Operating Conditions: Dry Horizontal ( ( ) ) Wet Vertical Kgm ( ( ) )

QUESTIONNAIRE 1. Shaft diameters: Input mm. Output PAGE of mm. 1.Spline/Keyway Details : 1. Ambient Temperature : 1. Maximum Outer diameter of the Clutch /Brake : 1. Maximum Width of the Clutch/Brake: 19. Briefly explain your application / purpose of using clutch or Brake, CUSTOMER DETAILS: Company Name: Address: Contact Person & Designation: Contact Phone Number & Email: mm