Electrical Motor Laminations
Electrical Motor Laminations
Call 0121 544 5808 Today
Bespoke Manufacturing
Instant Quote Service
Worldwide Delivery
Various Gauges/Thicknesses
Bespoke Manufacturing
Instant Quote Service
Worldwide Delivery
Various Gauges/Thicknesses
Stephens Gaskets is a UK manufacturer of precision electrical motor laminations, supplying stator and rotor cores that power today’s most advanced motors – from industrial machinery and EV traction motors to aerospace generators and renewable systems.
Our laminations are engineered to minimise losses, manage heat, and boost energy efficiency, helping manufacturers meet IE4 and IE5 efficiency standards.
What Are Electrical Motor Laminations?
Electrical motor laminations are thin sheets of electrical steel, also known as silicon steel, stacked to form a motor’s magnetic core. They reduce eddy current losses – a key cause of wasted energy and heat in electric motors.
Each lamination is coated with insulation and cut to precise thicknesses (typically 0.2-0.5 mm) depending on motor frequency. Thinner laminations mean higher efficiency and cooler operation.
Why Choose Stephens Gaskets?
- UK Manufacturing Expertise: Over 70 years producing precision-engineered laminations.
- Low-Loss Laminations: Manufactured from high-grade NOES and CRNGO steels.
- Custom Design Capability: Bespoke stator and rotor laminations for any application.
- Prototype to Production: Laser-cut prototypes, high-speed press for volume.
- Certified Materials: Full traceability and insulation coatings that meet IEC standards.
- Fast Turnaround: Reliable UK and global delivery with consistent quality control.
Key Benefits
1. Reduced Energy Losses
Laminations block eddy currents for maximum efficiency.
2. Cooler Operation
Less heat = longer motor lifespan and reduced cooling needs.
3. Superior Magnetic Properties
High permeability steels ensure efficient flux flow.
4. High-Frequency Compatibility
Thin laminations improve performance in inverter-driven motors.
5. Cost Savings
Lower power use and maintenance overheads.
6. Sustainability
Energy efficiency supports green initiatives in EVs and renewables.
Applications of Electrical Motor Laminations
Our laminations are used in virtually every electric power system, including:
1. AC Motors
Induction and synchronous motors for industrial, HVAC, and pump systems.
2. DC Motors
Robotics, automation, and vehicle systems.
3. Brushless DC (BLDC) Motors
Drones, electric vehicles, and home appliances.
4. Generators & Alternators
Industrial, renewable, and aerospace energy systems.
5. Compressors, Pumps, & Fans
Efficient, quiet operation for manufacturing and HVAC.
6. Medical & Aerospace Equipment
MRI machines, actuators, and onboard generators.
Materials & Manufacturing
We produce laminations using advanced magnetic alloys to suit each industry:
| Material | Typical Use | Benefit |
|---|---|---|
| Non-Oriented Electrical Steel (NOES) | Motors, Generators | Balanced magnetic properties for rotating machines. |
| High-Silicon Steel (3.5%+ Si) | EVs, Aerospace | Low eddy currents and high resistivity. |
| Nickel-Iron Alloys (Permalloy) | Aerospace, Medical | High permeability, low losses. |
| Cobalt-Iron Alloys (Hiperco) | Defence, Aerospace | High saturation flux density & temperature tolerance. |
| Amorphous Alloys | High-Frequency Motors | Ultra-low losses and compact design. |
All laminations receive inorganic or hybrid insulation coatings to prevent inter-sheet shorting and ensure durability during punching or stacking.
Industry Pain Points – and How We Solve Them
| Buyer Challenge | Our Solution |
|---|---|
| Energy inefficiency & overheating | Precision laminations reduce eddy current losses and heat buildup. |
| Supply chain delays | UK-based production ensures fast lead times and reliability. |
| Noise & vibration issues | Burr-free edges and low-magnetostriction steels minimise hum. |
| Material costs & waste | Optimised cutting and nesting reduce scrap rates. |
| Compliance pressures (IE4/IE5, EcoDesign) | Premium electrical steels ensure full regulatory compliance. |
FAQs
What are electrical motor laminations made from?
Typically non-oriented electrical steel (NOES) with 2-3.5% silicon for resistivity and magnetic performance.
Can Stephens Gaskets manufacture EV motor laminations?
Yes – we supply ultra-thin high-silicon laminations for EVs, hybrids, and aerospace.
Do you offer both stator and rotor laminations?
Yes, we produce complete laminated core sets for both stators and rotors.
How are laminations insulated?
Each sheet is coated with inorganic or hybrid insulation to prevent shorting and reduce eddy losses.
Can you handle small orders?
Yes – from one-off prototypes to mass production runs.
Stephens Gaskets is your trusted UK motor lamination manufacturer – delivering precision, performance, and reliability for every industry.
Call: 0121 544 5808 | Email: sales@stephensgaskets.co.uk
Request your Electrical Laminations quote today.