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Single company EBZ ZELLER by Stefan Zeller
Company purpose: development and construction office

Foundation of ZELLER AUTOMATIK AG by Peter Zeller (father), Thomas and Stefan Zeller (sons)
Management: Peter Zeller
Company purpose: automation technology
Head office: Murgenthalstrasse 24, 4900 Langenthal
Field of activity: representation of FAGOR AUTOMATION, CNC controls, measuring systems, digital displays

Move to Aarwangen
Purchase of the first production machine for drilling, and milling work
Extension of field of activity by mechanical engineering
Construction of the first two grinding machines type ESAMAT

Thomas Zeller takes over the management

Stefan Zeller takes over the management
Construction of the first grinding machine type DSM

Move to Wynau and expansion of the in-house production

Construction of the first grinding machine type KMS

Takeover of repair service for NSK microspindles

Stefan Zeller takes over the majority of shares

Construction of the first fully automatic grinding machine type ESAMAT

Development of the cylindrical grinding machine type RSM

25 year anniversary
Development of the PDT and PST precision rotary and swivel tables

Takeover (100% shareholding) of the company Valtec Toolsystems GmbH

30 year anniversary of ZELLER AUTOMATIK AG

Takeover (100% shareholding) of the company Mitracon GmbH

Integration of the company Mitracon GmbH into Zeller Automatik AG
All concerns regarding the center hole grinding machines and screw presses are now handled by Zeller Automatik AG

Foundation of the company Zeller Group GmbH
by Lukas & Sarina Zeller, as part of the succession plan
Management: Lukas Zeller
Company purpose: Holding company for the existing companies

Development and construction of the first universal 4-axis machining center KMS-1004-KW15 for milling and grinding with 15-fold tool changer

The company Mitracon GmbH is renamed into Zeller Immo GmbH and now serves as a real estate company
All companies are sold to the holding company Zeller Group GmbH (succession plan)

Lukas Zeller takes over the management

Continuous expansion of international sales partners in the field of center hole grinding machines

Milestone company building
Purchase of 4'000m2 building land for the new company building (planned start of construction: 2026)

First-time participation in international exhibitions in China, Poland and the Czech Republic, each with one or more center hole grinding machines