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Forced Cooling Kits

Optimal Cooling Performance for Continuous Duty Motors

In demanding industrial applications, consistent thermal management is crucial—especially for motors operating at low speeds, under variable loads, or in inverter-driven systems. The Valiadis Forced Cooling Kits provide a robust, efficient, and purpose-built solution for maintaining optimal operating temperatures, ensuring longer motor life, stable performance, and compliance with duty cycles that demand continuous airflow regardless of motor shaft rotation.

Tailored Cooling Across All Frame Sizes

Valiadis offers a comprehensive range of forced cooling units, compatible with motor frame sizes from 63 to 355, with protection ratings of IP55 or IP66 depending on the model type:

• Type G units, with IP55 protection, are ideal for standard industrial environments requiring reliable external cooling across a broad range of sizes.

• Type E units, with IP66 protection, are designed for more aggressive or moisture-prone environments where enhanced sealing is required.

Each unit is dimensioned for seamless mechanical integration, offering clear mounting footprints and standardized connections. Performance specifications (airflow, pressure, noise) are listed for each size, ensuring accurate selection based on your system’s needs.

Electrical Versatility & Global Standards

Whether you require single-phase or three-phase power supply, 50Hz or 60Hz frequencies, our cooling fans support a variety of input voltages and connection configurations—including Δ/Υ wiring compatibility and capacitor-based start options. This flexibility ensures integration with motors used in diverse geographies and electrical environments.

All fans are designed with efficiency and noise level in mind, maintaining optimal airflow-to-noise ratios even in compact housings.

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NaxosCoils™ Insulation System

High-Voltage Protection with Proven Integrity

In demanding electrical environments, insulation is more than just a barrier — it is the foundation of long-term performance. NaxosCoils™ is an advanced resin-rich insulation system, purpose-built for high-voltage applications such as motors, generators, and transformers.

Engineered for voltages up to 15,000V, NaxosCoils™ provides robust mechanical strength, moisture resistance, and full corona protection for coils exceeding 6,000V. Its flexible, high-density structure makes it suitable for use even where coils extend beyond the magnetic core, ensuring performance under thermal expansion and vibration.

Key Features

• Voltage Handling: Up to 15,000V

• Corona Shielding: Included for coils ≥ 6,000V

• Resin-Rich Construction: B-stage material with final curing during assembly

• Tested Reliability: Surge-tested, AC flash tested, and tan δ / tip-up verified

• Thermal Endurance: Guaranteed Class F (155 °C); Class H (180 °C) and C (220 °C) optionally available

• Climate Adaptability: Designed for use in humid, tropical, or Mediterranean conditions

• Moisture Resistance: Built to minimize water absorption

• Windability: High flexibility in outhangs and extensions prevents cracking

Quality Without Compromise

Before installation, each unit is fully cured and individually tested to ensure conformity with mechanical and electrical specifications. Designed with the needs of rewinders and manufacturers in mind, NaxosCoils™ combines ease of handling with high-performance insulation integrity.

Where reliability matters most, insulation becomes invisible — but never unimportant.

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Thin Oil Lubrication Systems

XRZ Series – Engineered for Industrial Longevity

In high-performance machinery, lubrication is not just a maintenance task—it’s an essential part of operational reliability. The XRZ Series Thin Oil Lubricators by Valiadis S.A. are built to support heavy-duty equipment across cement, metallurgy, mining, energy, petrochemical, and transportation industries.

Designed for closed-loop oil circulation systems, XRZ units deliver precise, stable lubrication to critical components such as bearings and gears, reducing friction, dispersing heat, and ensuring consistent machine performance under demanding conditions.

Modular, Integrated Design

Each XRZ station integrates an oil reservoir, dual-pump configuration (one operational, one standby), duplex mesh filter, oil cooler, control cabinet, and instrument panel in a single, factory-assembled unit. Installation is simple—no special foundation required.

Performance That Scales

With flow rates ranging from 6 to 1000 L/min, the XRZ series covers a wide spectrum of applications. Key system features include:

• Operational pressure: adjustable between 0.2 and 0.6 MPa

• Oil compatibility: N22–N460 extreme pressure gear oils

• Cooling & heating options: integrated heat exchanger and electric heater

• PLC-based automation: with DCS interface for remote control and alarms

• Filtration: Magnetic and fine mesh filters (0.05–0.12 mm accuracy)

Built for Industrial Environments

All pipelines are seamless, flange-connected and arc-welded to prevent leaks. The oil tanks are corrosion-protected and include maintenance ports, oil level control, air removal, and digital temperature monitoring.

Proven Quality

Certified to EN ISO 9001:2008, Valiadis S.A. ensures full compliance with international manufacturing standards. Our lubrication systems are ready to integrate into your central machinery control systems for safe, autonomous operation.

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Motor Bases

Support You Can Rely On

A well-mounted motor is a reliable motor. At Valiadis S.A., we supply a comprehensive range of motor bases designed to support electric motors across industrial applications — from fixed installations to systems requiring regular belt tension adjustments.

Each base is engineered to ensure structural integrity, ease of alignment, and long-term stability, helping preserve the life of motors, bearings, and connected equipment.

Product Range

LINEA Series
A versatile and compact adjustable base, ideal for small to medium-sized motors where space is limited.

• Smooth-sliding adjustment mechanism

• Precision slots for alignment

• Robust construction for daily use in confined enclosures

TV909 Cast Iron Base
Built for heavy-duty motors and high-torque environments, this cast iron base offers excellent damping and mechanical resistance.

• Rigid, vibration-resistant structure

• Ideal for industrial belt drive systems

• Suitable for frequent tension adjustments under load

TB911 Belt-Tension Base
Designed for dynamic applications requiring regular and precise belt tensioning.

• Integrated tension screw system

• Fine-adjustable with minimum effort

• Excellent for conveyor drives, fans, and pumps

Key Characteristics

• Compatibility with IEC standard motor frames

• Durable metal construction (steel or cast iron, depending on model)

• Ease of installation with pre-drilled slots and mounting guides

• Corrosion-resistant finishes for long service life

Quiet, reliable, and essential — motor bases are often the unseen but critical component in keeping your operations balanced and aligned.

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Flexible Couplings

MECHANICAL CONNECTIONS BUILT FOR TORQUE, ALIGNMENT, AND RESILIENCE

Flexible couplings are essential mechanical components that connect two rotating shafts, transmitting torque while compensating for misalignment, vibration, and minor axial movement. They play a critical role in maintaining the efficiency and longevity of motor-driven systems — particularly when precise alignment is difficult or dynamic loads are present.

At Valiadis S.A., we offer a full range of KOPLER and MAX-REX flexible couplings designed for industrial electric motor applications. Manufactured to exacting standards and available in a wide range of sizes, our couplings ensure secure power transmission across varying operating conditions.

Product Highlights

KOPLER Series
• Compact cast-metal body
• For shaft diameters from 18 mm to 60 mm
• Torque ratings up to 125 HP (92 kW)
• Rated speeds up to 8200 rpm
• Effective for compressors, pumps, and general drives

MAX-REX Series
• Heavy-duty torque transmission
• For shaft diameters from 10 mm to 110 mm
• High power capacity up to 656 HP (482 kW)
• Designed for smoother rotation and shock absorption
• Ideal for larger drive systems and low-speed high-torque applications

Key Advantages

• Absorb misalignment and vibration

• Extend the lifespan of bearings and motor shafts

• Easy to install and maintain

• Available in multiple bore sizes and lengths

• Suitable for industrial environments with variable load dynamics

Both series are backed by our ISO 9001-certified quality assurance and supported by the technical expertise of our engineering team. Whether you require compact couplings for light-duty use or robust units for heavy mechanical loads, Valiadis provides coupling solutions to match your application requirements.

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PTC Thermistors

Motor Protection Sensors – Triple Sensor Configuration

Temperature monitoring is an essential aspect of electric motor protection — especially in systems operating under continuous or overload conditions. PTC (Positive Temperature Coefficient) thermistors provide fast, reliable temperature feedback, helping prevent winding overheating and ensuring safe shutdown before damage occurs.

Valiadis S.A. supplies triple sensor PTC thermistors conforming to DIN 44082, suitable for integration into motor windings. Built using EPCOS B59300 series elements, these sensors offer stable, repeatable triggering at defined temperature thresholds.

Applications

• Thermal protection of windings
• Overtemperature limit control
• Embedded sensor installation in AC motors
• Predictive maintenance systems

Key Features

• Triple thermistor sensors, factory-calibrated

• Threshold temperatures from 60°C to 190°C

• Rapid thermal response: <3 seconds

• Insulated sensor body with Teflon-coated AWG26 leads

• Color-coded leads for easy identification (DIN 44081 standard)

• RoHS-compatible, UL 1434 approved

• Maximum operating voltage: 30 VDC

• High insulation resistance: ≥2.5 kVAC test voltage

These PTC sensors are typically installed directly in the motor windings and connected to a temperature relay. When the predefined limit temperature is reached, the sensor’s resistance increases sharply — triggering a shutdown or alarm. This early warning helps reduce unplanned downtime, extend motor life, and ensure compliance with modern safety requirements.

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Temperature Sensors for Bearings & Winding

PT100 SENSORS FOR INDUSTRIAL MOTOR MONITORING

Temperature monitoring is vital to the long-term performance and safety of electric motors. PT100 thermal resistors provide accurate and stable measurement of heat buildup within motor bearings and windings — helping prevent premature wear, mechanical stress, or insulation failure.

At Valiadis S.A., we supply high-quality platinum resistance temperature detectors (RTDs) for integration into both new and existing motors. Built to IEC standards and tested for linearity, precision, and durability, our sensors are designed to perform reliably in harsh industrial environments.

Applications

• Motor bearings
• Winding temperature monitoring
• Machinery and textile equipment
• Railway motor systems
• Heavy-duty industrial settings

Sensor Types

• WZPM-201: Threaded bearing sensor (−50°C to 180°C)

• WZPD series: Embedded winding sensors for medium and large motors
  Both versions are available in single or double element formats, with customizable lead lengths and optional shielding.

Key Features

• High-accuracy platinum thermal resistance

• Fast response time and minimal deviation

• Resistant to vibration, humidity, and mechanical stress

• Solid construction with sealed connections

• Insulation-resistant up to ≥200 MΩ

• Lead-out wires with high-temperature fluoropolymer insulation

Whether for monitoring, logging, or integrating with control systems, our PT100 sensors offer precise temperature readings under real-world operating conditions. Custom configurations are available on request.

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Rotary Encoders – Sendix 5000 / 5020 Series

Robust Sensing Solutions for Industrial Precision

The Sendix 5000 and 5020 series incremental encoders from Kübler are designed to perform reliably in demanding industrial conditions. Built with Kübler’s patented Safety-Lock™ bearing structure, they offer exceptional resistance to vibration, installation errors, and harsh environments.

Highlights

• High protection class: IP66 / IP67 rated

• Extended temperature range: −40°C to +85°C

• High resistance to shock and vibration

• Magnetic field-proof, reverse polarity and short-circuit protection

• Up to 5000 pulses per revolution (PPR)

• Shaft and hollow shaft versions available

Application Fields

These encoders are ideal for use in:
• Automation systems
• Machine tools
• Packaging machinery
• Drive systems
• Wind turbines and renewable energy platforms

Flexible Configurations

A wide range of flanges, shaft diameters, and connector types (M12, M23, MIL, Sub-D) ensures compatibility with both European and US standards. Tangential, radial, and axial cable exits support clean and secure integration into existing control systems.

Fast Delivery

For selected configurations, the 24one service offers same-day manufacturing and shipping for orders placed before 9:00 AM CET — up to 20 units per day.

Ready-to-Mount Encoder in Stock

In collaboration with Kübler, our automation department has selected the encoder Type 8.5020.292F.1024.0020 (1024 PPR) as a standard solution, suitable for most applications requiring incremental encoders.

This encoder is kept in stock and can be mounted on any motor we have available at our Athens modification center, ensuring short delivery time for urgent needs.

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Half-Wave Rectifiers – Input Supply 10 to 500 VAC

Key Standard and Optional Technical Features

• Integrated excitation circuit for decisive and reliable brake engagement
• Input and output protection against overvoltage spikes
• Built-in switch option to eliminate DC voltage from the brake, significantly improving de-excitation times
• Fully enclosed circuit, embedded in epoxy resin for superior protection and durability
• High-speed internal electronics ensuring rapid response and long-term reliability
• Varistor protection on both input and output to guard against overvoltages
• Easy connection via clamp terminals for quick and secure wiring