Custom motors
& electrospindles

Stainless steel construction

Corrosion-resistant construction ensures long-term reliability in continuous contact with industrial coolants and demanding operating environments.

Custom winding design

Specialized winding configuration optimized for specific torque curve requirements while maximizing thermal dissipation to surrounding liquid.

Integrated liqui cooling

Operates partially submerged in coolant flow, eliminating external cooling infrastructure while delivering superior thermal management in confined spaces.

Custom and co-engineering

We work with machine builders who require motors and electrospindles engineered around their machine architecture, not simply adapted from catalog.


Our solutions are designed for applications where abrasive materials, dust, fluids, and sustained loads impose requirements that standard motors cannot easily meet: protection from contaminants, thermal optimization for continuous duty, precise mechanical integration.

Together with customer design teams, we define every critical parameter: mounting geometry, torque curves, load profiles, and operation in harsh environments.

Each project follows a shared and transparent process:

01. Assessment

Machine requirements – load profile, duty cycle, mounting constraints, environmental conditions – are assessed against our capability envelope.
We identify technical fit and verify feasibility before design work begins.

02. Co-Engineering

Specifications become design through direct collaboration.
Thermal calculations, dimensional drawings, and torque curves are defined together in rapid iteration cycles, reducing development time and ensuring precision from the first version.

03. Prototype Validation

The first unit is built and tested at our Schio facility. During testing we verify: 

  • thermal behavior
  • Vibration
  • electromechanical performance under load.

Only after full compliance with functional requirements does the motor proceed to machine integration.

04. Integration & Iteration

The prototype is then tested on the machine under real operating conditions.
Design adjustments are based on results: any modifications are resolved in rapid cycles until final confirmation.

05. Production & Continuity

Configuration locked, protocols defined.
As the machine evolves, motor configurations evolve with it, maintaining compatibility and performance continuity.

Every project
begins with a technical assessment.

Complete the Fit Check to start the discussion with our team.

Case study:
MIB – Custom Liquid-Cooled Spindle Motors for Space-Critical Applications

The challenge

A leading industrial equipment manufacturer was developing a next-generation machining system with a critical constraint: their compact machine architecture demanded high-performance motors in an exceptionally tight installation envelope where traditional cooling methods were impossible.

The requirements:

  • Multiple motors operating simultaneously in severely restricted space
  • Sustained high-performance operation despite limited cooling airflow
  • Reliable thermal management without external cooling infrastructure
  • Continuous duty cycle under demanding load conditions
  • Long-term durability in a challenging thermal environment

Standard air-cooled or jacket-cooled motor solutions were simply too large. The competing demands of power density, thermal management, and spatial constraints threatened to make their innovative machine concept unviable.

Our approach

Rather than attempt to miniaturize existing motor technology (which would have compromised performance or reliability) our engineering team worked in close collaboration with the customer to fundamentally rethink the solution.

We conducted a comprehensive analysis of:

  • available installation space and motor positioning
  • heat generation patterns and thermal dynamics for the specified duty cycle
  • integration opportunities with the machine’s existing systems
  • long-term reliability requirements and maintenance accessibility

The key insight: instead of fighting the space constraint, leverage the machine’s existing liquid coolant system as an integrated cooling solution.

The solution

We developed a custom series of liquid-cooled spindle motors designed to operate partially submerged in the machine’s coolant flow.

Technical innovations:

Custom winding design: we developed a specialized winding configuration optimized for the specific torque curve requirements while maximizing thermal dissipation to the surrounding liquid.

Stainless steel construction: the motor housing is manufactured from corrosion-resistant stainless steel, ensuring long-term durability in continuous contact with industrial coolant.

High-load bearing system: heavy-duty bearings with elevated load capacity accommodate the demanding operating conditions and provide extended service life.

Inverter drive compatibility: the motor design is optimized for variable frequency drive (VFD) operation, enabling precise speed control and torque management across the full operating range.

Integrated liquid cooling: by allowing the coolant to directly contact designed-for-submersion motor components, we eliminated bulky cooling jackets, fans, and external heat exchangers—dramatically reducing the motor envelope while delivering superior thermal management.

Results

The liquid-cooled motor solution transformed an impossible design challenge into a competitive advantage:

Space efficiency achieved: the customer successfully integrated all required motors within their target machine footprint, making their compact system architecture feasible.

Thermal performance: superior heat dissipation through direct liquid cooling enables sustained high-power operation in the confined space, outperforming what air cooling could deliver.

Design validation: proof-of-concept success allowed the customer to confidently proceed with production of their innovative machine platform.


Market advantage: the customer launched their compact machining system ahead of competitors, differentiated by capabilities enabled by our specialized motor solution.

Long-term reliability: stainless steel construction and high-capacity bearings ensure dependable operation despite the demanding submersible environment.

Key Takeaway

This project exemplifies our approach to complex engineering challenges: collaborative problem-solving that goes beyond catalog products to develop truly custom solutions. When spatial constraints, thermal management, and performance requirements create seemingly impossible conflicts, our team works directly with customers to engineer motors that make the impossible possible.
Need a custom motor solution for your unique application challenge? Contact VEM spa to discuss how we can engineer the right solution for your specific requirements.

Are you interested in having us as a technical partner for an institutional project?

We are open to evaluating collaborations with university departments, research laboratories, ITS, and technical training centers. To initiate first contact, simply fill out the form below. One of our Technical Representatives Will Respond Directly.