Stator Coils & Rotor Bars

LH Marthinusen manufactures and refurbishes stator coils and rotor bars for use in rotating electrical machines. These components are produced to meet defined electrical and mechanical requirements, supporting reliable performance across a range of industrial applications.

Coil Types and Applications

A variety of coil types is available to suit different machine designs and operating conditions, including:

  • Set diamond coils
  • Butterfly coils
  • Hairpin coils
  • Rotor bars for induction machines

Each component is produced according to specific design and application requirements to ensure compatibility and consistent electrical performance.

Manufacturing Equipment and Processes

Our facility is equipped with specialised equipment to support accurate and consistent production, including:

  • James spreaders
  • CNC pneumatic coil spreaders
  • Loop winders
  • Dual head pneumatic Ridgeway taping machines
  • Consolidation presses

These systems are used to maintain coil integrity and dimensional consistency throughout the manufacturing process. Comprehensive coil testing is also carried out to verify insulation performance and overall quality.

Conductor and Insulation Systems

A range of conductor and main wall insulation systems is available to suit operating conditions, including:

  • Bonded mica systems
  • Mica and Mylar insulation
  • Porovol V mica tape
  • Stress grading tape
  • Contafel anti corona tape
  • Red overhang tape
  • Poroband resin rich tape
  • Epoxy mica tape
  • Hybrid insulation systems where required

Through controlled processes and specialised equipment, LH Marthinusen delivers stator coil and rotor bar solutions that support reliable machine operation and long-term performance.