Sitem Group
Sitem Group manufactures precision magnetic laminations and die-cast aluminum components for electric motors, generators, and transformers, serving automotive, industrial, and energy OEMs across Europe through seven manufacturing facilities in Italy, Slovakia, France, Switzerland, and Germany.
- Company typePrivate
- Founded1974
- HeadquartersPerugia, Italy
- Headcount251–500
- GTM typeB2B
- OfferingHardware or Manufacturing
What Sitem Group does
Sitem Group (legal entity Sitem S.p.A.) is a European manufacturer of precision magnetic laminations and die-cast aluminum components used in electric motors, generators, and transformers. The company was founded in 1974 in Cannaiola di Trevi, Umbria, Italy, initially serving Italian white-goods manufacturers with magnetic laminations for refrigerator compressors and washing machine motors, and has since grown into one of Europe's largest electric motor lamination producers. Its core product portfolio comprises three lines: electric-motor laminations (power range 0.09 kW to 30 kW, available in MEC and IEC series and to customer design), transformer laminations (EI and UI configurations, plus C-cores and toroids), and die-cast aluminum components (housings, shields, flanges), complemented by an in-house tool-making capability for progressive blanking dies including tungsten carbide elements.
Production is vertically integrated across blanking, heat treatment (annealing), die-casting, stator stacking with TIG/MIG/laser welding, CNC machining, and coil slitting, supported by more than 33 blanking lines, 16 die-casting lines, 3 annealing furnaces, and over 200 blanking tools. The group operates seven manufacturing facilities across Italy (Trevi HQ, Canegrate, Limbiate/Zaninelli), Slovakia (Spisska Nova Ves), France (Villenaux-la-Grande/Decoup), Switzerland (Unterentfelden/Stanzwerk AG), and Germany (Nagold, transferred from Tempel in 2025). Customers are industrial B2B OEMs and Tier 1 suppliers in automotive (including EV motors), industrial manufacturing (fans, pumps, compressors, power tools, forklifts, alternators), energy and power infrastructure (transformers, wind generators), and white goods, reached through a direct sales model, international trade-fair participation (notably Coiltech), and the digital channels of Sitem.it and LinkedIn. Pricing is negotiated per customer and per specification and is not publicly disclosed.
Sitem became a majority-owned subsidiary of Worthington Steel in 2024 following the acquisition by Tempel Steel Company of an approximately 52% controlling equity stake, with the founding Bartoloni family continuing in operational leadership. Headcount has grown from roughly 100 to approximately 800 employees since Giovanni Bartoloni assumed the CEO role in 2000, driven by a programmatic acquisition strategy across European lamination and tooling assets. Revenue is not publicly disclosed.
Sitem Group firmographics
Firmographics- Name
- Sitem Group
- Legal name
- Sitem S.p.A.
- Website
- https://sitem.it
- Company type
- Private
- Founded year
- 1974
- Operating status
- Operating
- Headcount range
- 251–500 employees
- Short description
- Sitem Group manufactures precision magnetic laminations and die-cast aluminum components for electric motors, generators, and transformers, serving automotive, industrial, and energy OEMs across Europe through seven manufacturing facilities in Italy, Slovakia, France, Switzerland, and Germany.
- Ownership category
- akta.pro rank
Sitem Group industry classification
Industry- Product category
- Electrical Steel Components and Magnetic Laminations
- NAICS
- Forging and Stamping (3321), Forging and Stamping (33211), Special Die and Tool, Die Set, Jig, and Fixture Manufacturing (333514)
- SIC
- Electronic Coils, Transformers & Other Inductors (3677), Power, Distribution & Specialty Transformers (3612), Motors & Generators (3621), Metal Forgings & Stampings (3460)
- akta.pro primary industry
- Transformers & Magnetics (Power/Signal) (HDAHANAD)
- akta.pro secondary industries
- Inductors & Coils (Power/RF/Chokes) (HDAHANAC), Passive Components (Resistors, Capacitors, Inductors, Ferrites) (IMAGAJAA)
Keywords
Where Sitem Group is headquartered
LocationHeadquarters
- HQ city
- Perugia
- HQ country
- Italy
- HQ region
- Europe
Offices6 records
Markets served
Sitem Group business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Operations, Personnel, Supply Chain, Infrastructure, Technology or R&D, Marketing or Sales
Revenue model
- Magnetic Laminations for Electric Motors: Sitem Group manufactures and sells blanked magnetic laminations for electric motors and generators, with power ratings from 0.09 kW to 30 kW, produced to customer designs or from catalog. The company offers MEC series and IEC series dedicated to Northern European markets. These are sold as components or as assembled stators to industrial, automotive, and energy customers globally.
- Transformer Laminations: Production and sale of blanked magnetic laminations for transformers, available in both custom and catalog versions. Products include EI single/three-phase and UI single-phase laminations. Primarily serves French and German markets through the Decoup subsidiary.
- Die-Cast Aluminum Components: Die-cast aluminum parts for electric motors including housings, shields, flanges, manufactured to customer specifications or from the Sitem catalog. Covers a complete and integrated solution from raw material supply to finished machined and/or painted components ready for direct assembly.
Go-to-market motion2 records
Distribution channels1 record
Marketing channels3 records
Sitem Group product offering
Product offeringCore offering
Sitem Group manufactures magnetic stamped and annealed laminations used in electric motors, generators, and transformers, with power ratings from 0.09 kW to 30 kW. The company also produces die-cast aluminum components (housings, shields, flanges) for electric motors and provides tooling services including progressive blanking dies. It delivers integrated solutions from raw material supply through finished machined and painted components ready for direct assembly.
Product overview
Sitem Group is an industrial manufacturer producing magnetic laminations for electric motors and transformers, die-cast aluminum components, and tooling services. The company operates across six manufacturing facilities in Italy, Switzerland, Slovakia, and France, offering a portfolio of three core product lines: Electric Motors Laminations (available in MEC and IEC series), Transformer Laminations (in standard and custom configurations), and Die-Cast Components (housings, shields, flanges), complemented by tooling services for progressive blanking dies. The company became part of Worthington Steel (via subsidiary Tempel Steel) in 2024, strengthening its presence in the European electrical steel market.
Differentiator
Problem solved
Functional benefit
Products and services
- Electric Motors Laminations Blanked magnetic laminations for electric motors and generators with power ratings from 0.09 kW to 30 kW, offered in MEC series and IEC series dedicated to Northern European markets, produced to customer designs or from the Sitem catalog, and supplied as components or as assembled stators to industrial, automotive, and energy customers.
- Transformer Laminations Blanked magnetic laminations for transformers available in both custom and catalog versions, including EI single-phase, EI three-phase, and UI single-phase configurations, primarily serving French and German markets through the Decoup subsidiary.
- Die-Cast Components Die-cast aluminum alloy components for electric motors, including housings, shields, and flanges, manufactured to customer specifications or from the Sitem catalog using 16 vertical and horizontal die-casting lines working on diameters from 30mm to 150mm with heights up to 400mm. Delivered as a fully integrated solution from raw material supply to finished machined and/or painted components ready for direct assembly.
- Tooling Services Design and construction of progressive blanking dies for magnetic laminations, including hard metal (tungsten carbide) elements, using CAD-CAM technology, with capabilities in packing technologies and stator/rotor compensation.
Quantifiable outcome
- One of Europe's largest electric motor lamination producers following acquisition by Worthington Steel subsidiary Tempel Steel Company
- +1 more outcomes
Companies that use Sitem Group
Customer profileNamed customers5 records
Segments4 records
Ideal customer profiles3 records
Sitem Group technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature7 records
Sitem Group partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core.
- Worthington Steel (Tempel Steel Company)coreSitem Group became a subsidiary of Worthington Steel through its Tempel Steel Company subsidiary, which acquired an approximately 52% controlling equity stake in Sitem Group. The transaction involved a combination of cash investment, acquisition of shares from existing shareholders, and contribution of Worthington Steel's Nagold, Germany facility. Sitem Group operates as part of Worthington Steel while continuing to be led by its existing management team from its headquarters in Trevi, Italy. The Nagold facility was subsequently transferred to Sitem Group in 2025. This partnership makes Sitem one of Europe's largest electric motor lamination producers and strengthens its presence in the European market.
- Nagold (Germany facility, formerly part of Tempel)coreThe German company Nagold, formerly part of Tempel Steel Company, was transferred to Sitem Group in 2025 as part of the Worthington Steel / Tempel integration with Sitem. This added German manufacturing capability to Sitem Group's European footprint.
Scale indicators4 records
Recent moves9 records
Expansion highlights6 records
Sitem Group competitors and assessment
Company assessmentDirect peers
- Georg Drahtwerk: German specialist in drawn wire and electrical steel products including transformer-grade laminations and C-cores. Comparable niche competitor in European transformer lamination supply, particularly for distribution transformer customers.
- Arnold Magnetic Technologies: Global manufacturer of precision magnetic laminations, motor cores, and electromagnetic assemblies serving aerospace, defense, and industrial markets. Comparable in technical lamination capabilities and customer verticals for motor and transformer components.
- Ruff GmbH: German manufacturer of stamped and laser-welded electrical steel laminations and assembled motor cores for automotive traction and industrial motors. Direct competitor in precision motor lamination production for European OEMs.
- Waelzholz: German specialist in cold-rolled electrical steel strip and specialty steels used in motor and transformer laminations. Directly comparable in product portfolio, customer base (European motor manufacturers), and technical specialization.
- Feintool: Swiss-listed precision parts manufacturer producing electrical steel laminations and assembled stators/rotors for hybrid and electric vehicle traction motors. Closest direct competitor to Sitem in motor lamination technology and customer base across European OEMs.
Broad incumbents
- voestalpine AG: Austrian steel and technology group whose Electrical Steel business produces grain-oriented and non-grain-oriented electrical steel — the primary raw input Sitem laminates. Vertical supplier/upstream comparable and strategic counterpart for European electrical steel supply.
- Cogent Power (Tata Steel): Tata Steel subsidiary producing grain-oriented electrical steel for transformers and non-oriented steel for motors. Comparable in transformer lamination materials supply and competes for European transformer manufacturer customers.
- Endurance Technologies: Indian-listed automotive component manufacturer with die-casting and aluminum component operations serving global automotive OEMs. Comparable in die-cast aluminum housing/shield production for electric motors and two-wheeler/four-wheeler drivetrains.
- Tempel Steel Company: U.S.-based manufacturer of electrical steel laminations, motor cores, and transformer components. Now Sitem's parent company (~52% stake) following the 2024–2025 acquisition; operates overlapping product lines and serves comparable automotive and industrial customers in North America.
- ThyssenKrupp Steel Europe: Major European electrical steel producer (powercore®) supplying transformer and motor lamination manufacturers. Comparable as both a potential supplier and competing integrated player in European magnetics supply chains.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
Sitem Group social profiles
Digital presenceSitem Group compliance and trust
Trust signalCompliance4 records
Sitem Group financial estimates
Financial estimateRevenue estimate
Valuation estimate
Sitem Group leadership team
Management profileNumber of profiles
Profiles2 records
Sitem Group subsidiaries and ownership
Company hierarchySubsidiaries7 records
Sitem Group funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Sitem Group M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Sitem Group
What does Sitem Group do?
Sitem Group manufactures magnetic stamped and annealed laminations used in electric motors, generators, and transformers, with power ratings from 0.09 kW to 30 kW. The company also produces die-cast aluminum components (housings, shields, flanges) for electric motors and provides tooling services including progressive blanking dies. It delivers integrated solutions from raw material supply through finished machined and painted components ready for direct assembly.
Is Sitem Group a public or private company?
Sitem Group is a private company. It is classified as corporate owned and is currently operating.
When was Sitem Group founded?
Sitem Group was founded in 1974. It employs 251 to 500 people.
Where is Sitem Group based?
Sitem Group is headquartered in Perugia, Italy, in the Europe region.
How does Sitem Group make money?
Three revenue lines are on record. Magnetic Laminations for Electric Motors are the primary driver. The others are transformer Laminations and die-Cast Aluminum Components.
Who are Sitem Group's main competitors?
Direct peers on record are Georg Drahtwerk, Arnold Magnetic Technologies, Ruff GmbH, Waelzholz and Feintool. Broad incumbents are voestalpine AG, Cogent Power (Tata Steel), Endurance Technologies, Tempel Steel Company and ThyssenKrupp Steel Europe.
Does Sitem Group have an API?
No public API is recorded for Sitem Group.
What industry is Sitem Group in?
Sitem Group's product category is Electrical Steel Components and Magnetic Laminations. Its primary akta.pro industry code is HDAHANAD, Transformers & Magnetics (Power/Signal), with a secondary code of HDAHANAC, Inductors & Coils (Power/RF/Chokes). Its NAICS code is 3321 and its SIC code is 3677.