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Spot Welding Machines

We offer the best product range of Bench Type Spot Welder, Rocker ARM Spot Welder (Pedal Operated) Model - SWE (A), Rocker ARM Spot Welder (Pneumatically Operated) Model - SWE (P), Pedal Operated Rocker ARM Spot Welder and Pneumatically Operated Rocker ARM Spot Welder.

Bench Type Spot Welder

STERCO make Bench Type Spot Welder (Thyristorised Control) Suitable for small components which require fine control.

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Rocker ARM Spot Welder (Pedal Operated) Model - SWE (A)

SPECIAL FEATURES : Rocker Arm Type Spot Welders are most suitable for mass production due to less operational efforts, Machine confirms to latest Indian and International Standards. These machines are designed and developed to meet the needs of a vast number of metal fabrication shops. ADVANTAGES Besides spot welding the machine can also be used for Electrobrazing, Cross wire welding and resistance heating. SALIENT DESIGN FEATURES Machine Body is designed for its ruggedness and easy maintenance. A heavy machined bracket is provided on top of the frame for Rockering the upper arm holder. "T" stotted face plate allows both vertical and horizontal adjustment of lower arm. Increased current carrying section because of special electrode holder clamping system. Easy accessibility for maintenance of Electrical, Electronic and Mechanical components. WELDING TRANSFORMER With special design techique adopted to offer, maximum efficiency of the transformer, confirming to latest IS / 4804 part I. It is Air / Water cooled, sandwitch construction of coils having core of high grade electrical steel. Class ' F' vacuum impregnated helps to withstand higher temperature. ELECTRICAL & ELECTRICAL CONTROL SYSTEM: It consists of precision  Sterco  Solid State  C-MOS Integrated Weld Timer  having timing range 5 - 99 -199 cycles, adjustable in step of one cycle by means of Thumb Wheel switch alongwith heavy duty Electromagnetic Contactor for switch provided int he mahcine which initiates the weld only after preset pressure is built up. THE ELECTRODE SYSTEM Electrode Forced is attained through the rocker arm mechanism coupled with foot pedal. Electrode force can be varried by adjusting the nut provided on the back - rod below the compression spring of rocker arm mechanism. FOR FINE CONTROL A pair of thyristor can be provided for switching purpose in place of electro magnetic contactor at an extra cost. By using thyristor can be provided for switching purpose in place of electro magnetic contactor at an extra cost. By using thyristor Heat Current can be controlled from 5 to 95% of the current available. Weld time is also adjustable from 1 to 99 cycles in step of one cycle each.

  • Technical Specifications
    Model SWE
    ( A) - 5
    SWE 
    ( A) -10
    SWE
    ( A ) - 15
    SWE
    ( A ) - 25
    SWE
    ( A ) - 35
    SWE 
    ( A ) - 50
    SWE
    ( A ) - 75
    Rating KVA at 50% Duty Cycle 5 10 15 25 35 50 75
    Throat Clearance Min. mm 100 100 175 175 175 175 175
    Max. 200 200 300 300 300 350 350
    Max. Available Short Circuit Current at 30 cm Throat Depth K. Amps. 6.5 9.5 10.5 16 19 24 28
    Nominal Electrode Force @ 300 mm T.D. Kgf. 75 100 150 200 200 250 250
    Rocker Arm Diameter 31.5 38 51 57 57 62 70
    Electrode Holder Diameter 15.75 19 22 25.4 25.4 25.4 32
    Length of Upper Electrode Holder 200 200 200 200 200 200 200
    Length of Lower Electrode 200 200 200 200 200 200 200
    Types of Transformer Cooling Air Air Air Air Air Water Water
    Arms & Electrode Water Water Water Water Water Water Water
    Overall Dimension Without Throat Depth 30 x 50 x 110 30 x 55 x 1125 33 x 60 x 125 35 x 63 x 130 35 x 63 x 130 40 x 72 x 140 40 x 75 x 140







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Rocker ARM Spot Welder (Pneumatically Operated) Model - SWE (P)

"STERCO"  make ROCKER ARM PNEUMATICALLY OPERATED SPOT WELDER are most suitable for mass production, due to its pneumatic operation, less operational efforts are required. These machines are designed & developed to meet the needs of a vast number of sheet metal fabrication shops and can be used for electro brazing, cross wire welding, projection welding & resistance heating. SALIENT DESIGN FEATURE Machine body is designed for its ruggedness and easy maintenance. A heavy Gun Metal bracket is provided on top of the frame for Rockering the upper arm holder. "T" slotted face plate allows both vertical and horizontal adjustment of lower arm. Because of this special electrode holder clamping system current in the carrying section increases. ELECTRONIC & ELECTRICAL CONTROL SYSTEM Machine consists of precision "STERCO" make SOLID STATE C-MOS INTEGRATED WELD TIMER with heavy duty electromagnetic contactor for switching purpose. Timer consists of squeeze (Range 0-250 cycles, step less control), Weld Timer (Range will be 5-99-199 cycles adjustable in step of one cycle)and to adjust the welding. Current from 50 to 100%, one tap changing switch of 8 steps had been provided on the machine. COOLING SYSTEM Arms, electrode holders, electrodes etc. are water cooled. Water cooled transformers can be provided at an extra cost. PNEUMATIC SYSTEM The basic pneumatic system consists of a pneumatic double acting cylinder, solenoid valve of 4 ways 5 port, filter, lubricator, regulator gauge and foot operated initiating switch for solenoid coil. ELECTRODE SYSTEM The electrode force is attained through the rocker arm mechanism coupled with the pneumatic cylinder. The electrode force can be adjusted with the help of Air regulator installed on the machine. FOR FINE CONTROL A pair of thyristor can be provided for switching purpose in place of electromagnetic contactor at an extra cost. By using thyristor, Heat Current can be controlled from 5 to 95% of the current available.Weld time is also adjustable from 1 to 99 cycles in step of one cycle each. Extra Features Additional ARMS AND ELECTRODE HOLDERS can be provided at an extra cost. This model is also available in PEDAL OPERATED; Ask for MODEL - SWE (A)

  • Technical Specifications
    Machine Model   SWE(P) - 10 SWE(P) - 15 SWE(P) - 25 SWE(P) - 35 SWE(P) - 50 SWE(P) - 75
    Rating KVA at 50% Duty Cycle   10 15 25 35 50 75
    Throat Clearance              
    Min. MM 175 175 175 175 175 175
    Max. MM 200 300 300 300 350 350
    Max. Available Short Circuit Current at 30 cm Throat Depth K.AMPS 9.5 10.5 16 19 24 28
    Nominal Electrode Force at 5.62 kg/cm2 Air Supply MM 250 250 250 450 450 450
    Rocker Arm Diameter MM 38 51 57 57 62 70
    Electrode Holder Diameter MM 19 22 25.4 25.4 25.4 32
    Length of Upper Electrode Holder MM 200 200 200 200 200 200
    Length of Lower Electrode MM 200 200 200 200 200 200
    Types of Transformer Cooling   Air Air Air Air Water Water
    Arms & Electrode   Water Water Water Water Water Water
    Overall Dimension Without Throat Depth In cms WxDxH
    (Approx.)
    30 x 55 x 120x 33 x 60 x 125 35 x 63 x 130 35 x 65 x 130 40 x 72 x 140 40 x 75 x400

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Pedal Operated Rocker Arm Spot Welder

  • Power 50 Kw
  • Application Electrobrazing, Cross Wire Welding And Resistance Welding.
  • Voltage(V) 220 V/380 V~420 V
  • Rated Duty Cycle 50%
  • Welding Type Spot
  • Colour Blue

Special Features : Rocker Arm Type Spot Welders are most suitable for mass production due to less operational efforts, Machine confirms to latest Indian and International Standards. These machines are designed and developed to meet the needs of a vast number of metal fabrication shops. Advantages Besides spot welding the machine can also be used for Electrobrazing, Cross wire welding and resistance heating. Salient design features Machine Body is designed for its ruggedness and easy maintenance. A heavy machined bracket is provided on top of the frame for Rockering the upper arm holder. "T" stotted face plate allows both vertical and horizontal adjustment of lower arm. Increased current carrying section because of special electrode holder clamping system. Easy accessibility for maintenance of Electrical, Electronic and Mechanical components. Welding transformer With special design techique adopted to offer, maximum efficiency of the transformer, confirming to latest IS / 4804 part I. It is Air / Water cooled, sandwitch construction of coils having core of high grade electrical steel. Class ' F' vacuum impregnated helps to withstand higher temperature. Electrical & electrical control system: It consists of precision Sterco Solid State C-MOS Integrated Weld Timer having timing range 5 - 99 -199 cycles, adjustable in step of one cycle by means of Thumb Wheel switch alongwith heavy duty Electromagnetic Contactor for switch provided int he mahcine which initiates the weld only after preset pressure is built up. The electrode system Electrode Forced is attained through the rocker arm mechanism coupled with foot pedal. Electrode force can be varried by adjusting the nut provided on the back - rod below the compression spring of rocker arm mechanism. For Fine Control A pair of thyristor can be provided for switching purpose in place of electro magnetic contactor at an extra cost. By using thyristor can be provided for switching purpose in place of electro magnetic contactor at an extra cost. By using thyristor Heat Current can be controlled from 5 to 95% of the current available. Weld time is also adjustable from 1 to 99 cycles in step of one cycle each.

  • Technical Specifications
    Model SWE
    ( A) - 5
    SWE
    ( A) -10
    SWE
    ( A ) - 15
    SWE
    ( A ) - 25
    SWE
    ( A ) - 35
    SWE
    ( A ) - 50
    SWE
    ( A ) - 75
    Rating KVA at 50% Duty Cycle 5 10 15 25 35 50 75
    Throat Clearance Min. mm 100 100 175 175 175 175 175
    Max. 200 200 300 300 300 350 350
    Max. Available Short Circuit Current at 30 cm Throat Depth K. Amps. 6.5 9.5 10.5 16 19 24 28
    Nominal Electrode Force @ 300 mm T.D. Kgf. 75 100 150 200 200 250 250
    Rocker Arm Diameter 31.5 38 51 57 57 62 70
    Electrode Holder Diameter 15.75 19 22 25.4 25.4 25.4 32
    Length of Upper Electrode Holder 200 200 200 200 200 200 200
    Length of Lower Electrode 200 200 200 200 200 200 200
    Types of Transformer Cooling Air Air Air Air Air Water Water
    Arms & Electrode Water Water Water Water Water Water Water
    Overall Dimension Without Throat Depth 30 x 50 x 110 30 x 55 x 1125 33 x 60 x 125 35 x 63 x 130 35 x 63 x 130 40 x 72 x 140 40 x 75 x 140

    Note: We reserve the right to change the design and modify specifications at the discretion of our technical department.  








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Pneumatically Operated Rocker Arm Spot Welder

  • Application Electrobrazing, Cross Wire Welding And Resistance Welding.
  • Welding Type Spot
  • Material Copper
  • Colour Blue
  • Main supply copper cable size 15 Mm
  • Rated Input Power(KVA) 15
  • Rated Input Current(A) 30
  • Voltage(V) 415

"STERCO" make ROCKER ARM PNEUMATICALLY OPERATED SPOT WELDER are most suitable for mass production, due to its pneumatic operation, less operational efforts are required. These machines are designed & developed to meet the needs of a vast number of sheet metal fabrication shops and can be used for electro brazing, cross wire welding, projection welding & resistance heating.   Salient Design Feature Machine body is designed for its ruggedness and easy maintenance. A heavy Gun Metal bracket is provided on top of the frame for Rockering the upper arm holder. "T" slotted face plate allows both vertical and horizontal adjustment of lower arm. Because of this special electrode holder clamping system current in the carrying section increases.   ELECTRONIC & ELECTRICAL CONTROL SYSTEM Machine consists of precision "STERCO" make SOLID STATE C-MOS INTEGRATED WELD TIMER with heavy duty electromagnetic contactor for switching purpose.   Timer consists of squeeze (Range 0-250 cycles, step less control), Weld Timer (Range will be 5-99-199 cycles adjustable in step of one cycle)and to adjust the welding.   Current from 50 to 100%, one tap changing switch of 8 steps had been provided on the machine.   COOLING SYSTEM Arms, electrode holders, electrodes etc. are water cooled. Water cooled transformers can be provided at an extra cost.   PNEUMATIC SYSTEM The basic pneumatic system consists of a pneumatic double acting cylinder, solenoid valve of 4 ways 5 port, filter, lubricator, regulator gauge and foot operated initiating switch for solenoid coil.   ELECTRODE SYSTEM The electrode force is attained through the rocker arm mechanism coupled with the pneumatic cylinder. The electrode force can be adjusted with the help of Air regulator installed on the machine.   FOR FINE CONTROL A pair of thyristor can be provided for switching purpose in place of electromagnetic contactor at an extra cost. By using thyristor, Heat Current can be controlled from 5 to 95% of the current available.Weld time is also adjustable from 1 to 99 cycles in step of one cycle each.   Extra Features Additional ARMS AND ELECTRODE HOLDERS can be provided at an extra cost. This model is also available in PEDAL OPERATED; Ask for MODEL - SWE (A)

  • Technical Specifications
    Machine Model   SWE(P) - 10 SWE(P) - 15 SWE(P) - 25 SWE(P) - 35 SWE(P) - 50 SWE(P) - 75
    Rating KVA at 50% Duty Cycle   10 15 25 35 50 75
    Throat Clearance              
    Min. MM 175 175 175 175 175 175
    Max. MM 200 300 300 300 350 350
    Max. Available Short Circuit Current at 30 cm Throat Depth K.AMPS 9.5 10.5 16 19 24 28
    Nominal Electrode Force at 5.62 kg/cm2 Air Supply MM 250 250 250 450 450 450
    Rocker Arm Diameter MM 38 51 57 57 62 70
    Electrode Holder Diameter MM 19 22 25.4 25.4 25.4 32
    Length of Upper Electrode Holder MM 200 200 200 200 200 200
    Length of Lower Electrode MM 200 200 200 200 200 200
    Types of Transformer Cooling   Air Air Air Air Water Water
    Arms & Electrode   Water Water Water Water Water Water
    Overall Dimension Without Throat Depth In cms WxDxH
    (Approx.)
    30 x 55 x 120x 33 x 60 x 125 35 x 63 x 130 35 x 65 x 130 40 x 72 x 140 40 x 75 x400

    Note: We reserve the right to change the design and modify specifications at the discretion of our technical department. 


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