AC & DC Motor Repairs and Maintenance

Trusted in Winding Technology

"Like in any work of art, motor rewinding is pure art and every winder is an artist in their own right."
Founder & MD, T.J Mosia

Corrective Maintenance and Reconditioning

Motocoil Armature Winders has a state-of-the-art winding and machine shop with capacity to repair some of the largest and most complicated AC/DC machines. We specialize in repairs, re-design, and servicing of a range of Low Voltage (LV) to Medium Voltage(HV) electric motors used in commercial and industrial applications including single to three phase AC induction motors, traction motors, crane motors, vibrator motors and DC machines.

Our workshop facility is designed to handle a wide range of electric motor sizes ranging from 0.37kW up to 700kW and DC Generators from 1.2 kVA to 150 kVA. Our staff is qualified and skilled to perform their duties to industry standards and all our internal and external processes are performed in direct alignment to ISO 9001 specification. All motor repairs carried out at Motocoil are in close alignment to some of the leading international electro-mechanical standards including IEEE 1068, IEEE 112A, ISO 1940, ISO 13373, and EASA AR100.

Delivering quality results is our number 1 priority and to ensure that we continuously deliver services to customers' satisfaction, we continuously seek improvement on our human capital, safety, quality of our processes and customer service support.

Electrical Repairs on AC/DC Machines:

Armatures
AC Motors (Synchronous and Squirrel Cage)
Servo and Brushless DC Motors
DC Machines (Motors and Generators)
Winding Re-design and Conversions
Lead Repairs and Reconnection
Terminal Block Replacements

Mechanical Repairs:

Dynamic Balancing
Shaft Repairs and Machining
Bearing Replacements
End Bracket Repairs

Electrical and Mechanical Testing:

Armature Testing
Winding Resistance Test
Hipot Testing
Surge Testing
Infrared Thermography Testing
Polarization Index Test
Core Loss Testing
Full Load Testing
Vibration Analysis

Range by Scope or Application:

Squirrel Cage Three-Phase Motor
Slipring Motors
Vibrator Motors
DC Permanent Magnet Motors
Flameproof Motors
Mining Winch Motors
Crane Motors
Traction Motors
Elevator Motors
Lift Truck Motors

Predictive & Preventative Maintenance

Failing to plan is planning to fail. Maintenance is the most important task after purchasing and installing your motor. To ensure a smooth and prolonged operation, you need to carry-out a sound and viable maintenance plan that is able to discover and rectify problems early before they cost you. We offer predictive, preventative and corrective maintenance routines that ensure your motor performs at its peak performance level.

Benefits of Regular Maintenance:

Enhances performance and operational efficiency
Helps discover potential problems early before they become urgent
Reduces maintenance costs by preventing expensive breakdowns and downtimes
Increases motor reliability and lifespan
Reduces operational costs due to energy conservation

Maintenance Solutions:

At Motocoil, we offer both online and offline maintenance solutions. We offer operational inspections and static inspections to AC/DC units to ensure they perform at their peak majority of the time. All our successful inspections services involevs detailed visual inspection and data capturing with comprehensive notes and photography.

Rewinded Electric Motor Stator with Leads

Our AC/DC motor inspection routines involves:

Visual Inspections
Bearing and Lubrication Inspections
Vibration Assessment
Motor Internal Assessment (Winding, Insulation, Power Sypply, Leads, Commutators, Brushes etc.)
Heat Assessment with Infrared Thermography
Technical Reporting

During our routine checks we record all findings and subsequently compile a comprehensive technical report with actionable recommendations that needs to be actioned to ensure the motor is well maintained to perform at its peak.