Schleifring

What Schleifring does

Schleifring GmbH is a privately-held German precision manufacturer founded in 1970 and headquartered in Fürstenfeldbruck, Germany. The company designs, develops, and manufactures electrical slip rings and contactless rotary transformers that transmit energy, electrical signals, data, and media between stationary and rotating components for applications where failure is not an acceptable outcome, including computed tomography scanners, aircraft and spacecraft, radar and defense systems, on- and offshore wind turbines, and general industrial machinery. Its technical differentiators include CT-rated contactless data transmission at up to 340 Gigabits per second, fiber optic rotary joints for high-bandwidth links, high-voltage rotary joints for wind and defense, and media rotary feedthroughs for liquids and gases, supported by a portfolio of more than 260 patents and 6,000+ custom developments accumulated over more than five decades.

The business operates a project-based, quote-priced hardware sales model: the bulk of revenue comes from custom engineering programs carried out under multi-year enterprise contracts, with a smaller catalog of standard slip rings, contact oils, and replacement brushes sold through an owned e-commerce shop. Sales are delivered through a direct enterprise field-sales motion with sales engineers serving as key account managers across the project lifecycle from inquiry through series production and aftermarket service; regional subsidiaries in Chelmsford (MA) and Elgin (IL) in the United States, Tianjin in China, and Trenčianska Turná in Slovakia provide local sales, manufacturing, and qualification support, complemented by a dedicated medical-systems subsidiary and the retained Electro-Miniatures miniature-components brand. Schleifring employs approximately 800 specialists across five international locations and serves more than 3,000 customers worldwide, with medical imaging, aerospace, security and defense, wind energy, and industrial manufacturing identified as the primary vertical segments.

Name

Schleifring

Legal name

Schleifring GmbH

Website

https://schleifring.de

Company type

Private

Founded year

1970

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Schleifring GmbH is a privately-held German manufacturer that designs and builds electrical slip rings and contactless rotary transformers for medical CT scanners, aerospace, defense, wind energy, and industrial applications, serving more than 3,000 customers globally across five international facilities.

Ownership category

akta.pro rank

Product category

Electrical Slip Rings and Rotary Transformers

NAICS

Relay and Industrial Control Manufacturing (335314)

SIC

Electronic Coils, Transformers & Other Inductors (3677)

akta.pro primary industry

Electromechanical Components (Relays, Switches, Potentiometers, Encoders) (IMAGAJAB)

Keywords

• Electrical slip rings
• Rotary transformers
• Fiber optic rotary joints
• CT slip rings
• Wind energy slip rings

Headquarters

HQ city

Fürstenfeldbruck

HQ country

Germany

HQ region

Europe

Offices7 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Technology or R&D, Supply Chain, Infrastructure, Marketing or Sales

Revenue model

1. Slip Ring and Rotary Transformer Products: Design, development, and manufacturing of custom and standard slip rings, contactless rotary transformers, fiber optic rotary joints, and related precision components for industrial applications
2. Custom/Special Developments: Over 6,000 specialized custom developments worldwide, indicating a project-based custom engineering revenue stream

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

Schleifring designs, develops, and manufactures electrical slip rings (Schleifringe) and contactless rotary transformers (Drehübertrager) that enable the reliable transmission of energy, electrical signals, data, and media between stationary and rotating components, including extreme environments on land, sea, air, and in space. The portfolio spans hollow shaft slip rings, industrial slip rings, fiber optic rotary joints, high-voltage swivels, and media rotary feedthroughs, complemented by custom engineering for demanding applications. The company serves medical imaging (CT), aerospace, security and defense, wind energy, and industrial manufacturing customers worldwide.

Product overview

Schleifring is a global technology and market leader for electrical slip rings (Schleifringe) and contactless rotary joints (Drehübertrager), offering a comprehensive portfolio of precision components for reliable transmission of energy, electrical signals, data, and media between stationary and rotating components. The product range centers on hollow shaft slip rings, industrial slip rings, fiber optic rotary joints, and media rotary feedthroughs, supported by consumables (contact oils), replacement parts (contact transfer units and carbon brushes), and various components. The company serves demanding applications in aerospace, medical imaging (CT scanners), security and defense (radar systems), wind energy, and industrial manufacturing. With over 6,000 specialized developments worldwide and more than 260 patents, the company operates from five international locations with approximately 800 employees.

Differentiator

Problem solved

Functional benefit

Products and services

• Hollow Shaft Slip Rings (Hohlwellen-Schleifringe) Hollow shaft slip rings enabling the transfer of electrical signals, power, and data through rotating shafts in various industrial applications; designed for use cases where a center through-hole is required for media or additional shafting.
• Industrial Slip Rings (Industrie-Schleifringe) Industrial slip ring solutions for manufacturing and industrial automation applications, providing reliable transmission of energy, signals, and data between stationary and rotating components.
• Fiber Optic Rotary Joints (Faseroptische Drehübertrager) Contactless fiber optic rotary joints for high-speed data transmission in rotating systems, supporting applications requiring zero friction and unlimited continuous rotation with high bandwidth.
• Media Rotary Feedthroughs (Mediendrehdurchführungen) Rotary feedthroughs for transferring liquids, gases, and other media between stationary and rotating components in demanding environments.
• Contact Transfer Units and Carbon Brushes (Kontaktübertrager & Kohlen) Replacement contact transfer units and carbon brushes for slip ring maintenance and performance optimization.
• Contact Oils (Kontaktöle) Specialized contact oils for maintaining and lubricating slip ring components to ensure optimal performance and longevity.
• Components (Komponenten) Various components and adapters for slip ring systems, including connection adapters and supplementary parts available through the online shop.
• Custom Slip Ring and Rotary Transformer Developments Custom-engineered slip rings and rotary transformers developed in collaboration with customers for demanding applications in medical imaging (CT), aerospace, security and defense, wind energy, and industrial manufacturing; over 6,000 specialized custom developments have been delivered worldwide.

Quantifiable outcome

• Data transmission up to 340 Gigabit per second for CT scanners
• +2 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Ametek Inc. US electronic instruments and electromechanical devices manufacturer supplying precision motion and slip ring subcomponents across aerospace, defense, medical, and industrial — competing with Schleifring for similar high-reliability applications.
• Curtiss-Wright Corporation: Diversified aerospace, defense, and industrial conglomerate whose motion control division supplies slip rings and rotary components. Larger and broader than Schleifring, but overlaps meaningfully in defense and aerospace slip ring programs.
• Cobham Advanced Electronic Solutions (Eaton): Acquired by Eaton, Cobham's mission systems division supplied slip rings and rotary joints for aerospace and defense applications. Direct competitor in defense slip rings, now embedded within a much larger diversified industrial group.
• Parker Hannifin (Meggitt): Following its acquisition of Meggitt, Parker Hannifin operates a substantial aerospace sensing and motion control portfolio including slip ring and rotary transmission capabilities, overlapping with Schleifring in aerospace applications.

Direct peers

• Conductix-Wampfler (Delachaux Group): Specialist in energy and data transmission systems for moving equipment, with a strong slip ring and inductive power transfer product line targeting industrial manufacturing, port equipment, and crane applications — closely mirroring Schleifring's industrial vertical.
• Stemmann-Technik (Wabtec): German-based slip ring and power transmission specialist serving rail, crane, and industrial markets; now part of Wabtec. Directly comparable in slip ring engineering for traction and heavy industrial use cases adjacent to Schleifring's wind and industrial segments.
• Mersen: French industrial group manufacturing slip rings, brush holders, and current transfer systems for industrial and process applications. Competes with Schleifring on industrial slip rings and signal/power transmission components.
• Moog Inc. US-based precision motion control and slip ring manufacturer with deep aerospace, defense, and industrial exposure. Competes head-to-head with Schleifring on slip rings, rotary transformers, and fiber optic rotary joints across overlapping customer programs.

Emerging players

• JINPAT Electronics: Shenzhen-headquartered slip ring and rotary joint supplier focused on CCTV, robotics, medical, and industrial automation. A fast-growing emerging player in the same slip ring category, particularly at the lower-spec, higher-volume end of the market.
• Hangzhou Prosper Mechanical Equipment: China-based slip ring and rotary joint manufacturer supplying wind, industrial automation, and surveillance markets at competitive price points. Represents the emerging Asian supply base competing with Schleifring on cost-sensitive industrial and surveillance tenders.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@schleifringgmbh
• LinkedInlinkedin.com/company/schleifring
• Instagraminstagram.com/schleifringgmbh

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Subsidiaries5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Schleifring