Industrial Gear Manufacturing: Two Companies, Two Centuries, One Philosophy
- Tony Gunn
- Aug 2
- 4 min read
By Tony Gunn | The WorldWide Machinist
Ask most people what powers modern industry, and they'll point to something flashy. A robot arm. A screen full of data. Something with blinking lights.
Nobody points to the gearbox.
And yet strip away the geared motors, the gearboxes, the muscle and joints hidden inside mining equipment, conveyors, and production lines — and the whole system stops moving. This week, two companies reminded me why industrial gear manufacturing is the quiet foundation everything else stands on. One started with electric motors in 1931. The other started with a blacksmith's forge in 1901. Both are still building the future with the same philosophy they started with.
SEW Eurodrive: Industrial Lego
The story began in Germany in 1931, when Christian Pähr founded Süddeutsche Elektromotoren-Werke.
What began as a small German motor company evolved into one of the most influential drive-technology businesses on the planet. Today, SEW Eurodrive employs approximately 22,700 people, operates in 57 countries, and generates more than €4.2 billion in annual revenue.
SEW helped transform the geared motor from a fixed product into a modular industrial platform. Motors, gearboxes, ratios, shafts, brakes, encoders, inverters, controllers, and software can be combined to create precisely the right solution for an application. It is industrial Lego.
SEW's Brazilian journey began in 1977, with the Brazilian company formally established in 1978. Brazil became an increasingly important part of SEW's global manufacturing and engineering strategy. The company purchased a 300,000-square-meter property, began production there in 2010, and completed the transfer of its mechanical and electrical manufacturing operations in 2014. Today, the Indaiatuba complex contains approximately 100,000 square meters of constructed space.
Indaiatuba now produces and assembles multiple families of industrial gear units, including the X, XP, P, and MC series, supporting some of the most demanding applications in mining, agriculture, sugar and ethanol, steel, cement, pulp and paper, ports, and bulk-material handling.
SEW was able to influence machine concepts around its manufacturing requirements, while Liebherr Gear Technology and Automation Systems gained the opportunity to refine new technologies under genuine production conditions.
SEW-EURODRIVE manufactures the muscle, joints, and nervous systems hidden inside modern industry. Liebherr helps provide the gear-manufacturing technology and automation needed to produce those systems with extraordinary accuracy and consistency.
This is a story that must be seen to be appreciated. No magazine or podcast can tell this story as it should be told. Full story coming soon.
WEG-Cestari: From a Blacksmith's Forge to 95,000 Gearboxes a Year
The story reaches back to 1901, when Italian immigrant Luigi Cestari opened a small blacksmith and saddlery operation in Aparecida do Monte Alto, Brazil.
He began producing forged components for animal-drawn vehicles. More than 120 years later, that small workshop has evolved into one of Brazil's most important names in mechanical power transmission. When WEG joined forces with Cestari Group in 2011, it combined Cestari's gearbox knowledge with WEG's global expertise in electric motors, variable-frequency drives, automation, and energy efficiency.
Today, WEG-CESTARI REDUTORES E MOTORREDUTORES S.A operates two Brazilian manufacturing facilities, in Monte Alto, São Paulo, and Bento Gonçalves, Rio Grande do Sul. More than 880 employees, over 50,000 square meters of built space, and annual production exceeding 95,000 gearboxes and geared motors. This is a Brazilian industrial powerhouse producing the mechanical joints that keep mining, steel, agriculture, sugar and ethanol, petrochemical, and general manufacturing operations moving.
That is where WEG-CESTARI's continued investment in Liebherr Gear Technology and Automation Systems becomes so important. Over the years, the company has invested in Liebherr equipment to strengthen the accuracy, consistency, productivity, and repeatability of its gear production. The investment also says something important about WEG-CESTARI's philosophy. A company does not preserve a century-long reputation by framing its history and hanging it in the lobby. It preserves that history by continually purchasing better technology, training its people, improving its processes, and refusing to let yesterday's success become tomorrow's excuse.
WEG-CESTARI began when transportation still depended on horses. Today, its gearboxes help move mines, mills, steel plants, farms, conveyors, crushers, pumps, and production systems across some of the world's toughest industries. The tools have changed. The buildings have grown. The tolerances have become microscopic. But the philosophy remains — build it properly, make it dependable, and invest in the technology required to keep improving.
Two Different Starts, One Shared Philosophy
Christian Pähr started with electric motors in Germany in 1931. Luigi Cestari started with a forge and a saddlery shop in Brazil in 1901. Neither one had any idea their companies would eventually be measured in tens of thousands of square meters and tens of thousands of gearboxes a year.
What connects both stories isn't the size they eventually reached. It's what they refused to do along the way. Neither company decided that a good reputation was something to protect by standing still. SEW turned the geared motor into a platform other manufacturers could build entire operations around. WEG-CESTARI turned a blacksmith's forge into a facility producing 95,000 gearboxes a year — without ever treating its history as an excuse to stop investing in what comes next.
Industrial gear manufacturing doesn't get the spotlight. It's not the flashy robot arm or the screen full of data. It's the muscle and joints hidden inside everything that actually moves. But talk to the people running mines, steel plants, and production lines around the world, and they'll tell you exactly which part of the operation they can't afford to have fail.
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Tags: #IndustrialGearManufacturing #SEWEurodrive #WEGCestari #Liebherr #GearTechnology #Manufacturing #Brazil #Germany #TheWorldWideMachinist #TonyGunn
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