About STOBER Drives
STOBER Servo Drives & Precision Gearboxes
STOBER Antriebstechnik is a precision drive-technology manufacturer founded in 1934 in Pforzheim, Germany, specializing in high-performance servo gearboxes, modular planetary and helical-bevel transmissions, and integrated servo-motor systems for automation, robotics, packaging machinery, and industrial machinery worldwide. The company has earned recognition as a technology leader in compact, low-backlash drive solutions with a reputation for rigorous engineering, energy efficiency, and OEM system integration support.
STOBER's core product platform consists of planetary gearboxes (the premier class of drive technology since the 1980s), right-angle planetary designs coupling helical-bevel geometry for space-constrained applications, and rack-and-pinion systems enabling linear motion control in automation equipment. All STOBER drives feature modular architecture—gearbox, motor, and controller can be sized and configured independently, then assembled into a scalable system matching specific machine requirements.
The company's cLEAN system technology addresses washdown and hygienic-environment challenges with IP69K and IP68 sealing, corrosion-resistant materials, and EHEDG (European Hygienic Engineering Design Group) compliance for food-processing, dairy, and pharmaceutical applications. cLEAN drives eliminate premature bearing failure from water ingress and contamination, operating reliably in high-pressure washdown, steam-clean, and wet operating conditions typical of food production and beverage lines.
STOBER's servo gearbox line is engineered for high-dynamic applications requiring repeatable positioning, rapid acceleration/deceleration, and minimal backlash—ideal for pick-and-place robots, precision assembly, and high-speed packaging lines. Each drive unit carries documented torque ratings, inertia matching curves, efficiency data, and thermal characteristics enabling rapid system design; STOBER's CAD integration and configurator tools streamline OEM engineering cycles.
ChatMRO's AI instantly maps your machinery's speed, torque, mounting interface, and environmental constraints (standard vs. washdown) to STOBER's modular drive portfolio, surfacing the optimal gearbox-motor configuration with load-rating verification, thermal analysis, and real-time pricing from authorized distributors—eliminating manual catalog navigation and enabling rapid prototyping and production ramp.
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Frequently asked questions
What is the difference between STOBER's planetary, helical-bevel, and rack-and-pinion drives?
Planetary gearboxes offer compact footprint, high torque density, and low backlash ideal for servo applications and space-constrained machinery. Helical-bevel designs provide right-angle (perpendicular) power transmission in a compact footprint, popular in robotic arms and horizontal-to-vertical drive conversions. Rack-and-pinion systems convert rotary motor motion into linear travel, essential for conveyor indexing, gantry positioning, and automation slides; STOBER's rack-and-pinion is a precision-engineered system with repeatable backlash <0.05° per cycle.
What does backlash mean, and why does it matter in servo applications?
Backlash is the small rotational or linear slack between motor input and load output, expressed in degrees (for rotary) or mm (for linear). In servo-positioning applications (pick-and-place, CNC indexing), excessive backlash causes positioning errors and oscillation; STOBER planetary drives achieve <2–5 arcminutes backlash, enabling precise repeatable motion. Rack-and-pinion designs reduce backlash through precision-ground teeth and preload mechanisms, ensuring smooth linear travel in high-speed packaging and assembly lines.
How do I select the right reduction ratio for my application?
Reduction ratio = motor speed ÷ output speed; choose a ratio that brings your motor speed (typically 3000 rpm AC induction, 1500 rpm servo) down to your required output speed. Torque multiplication = motor torque × reduction ratio (minus efficiency losses); higher ratios produce more output torque but reduce speed. STOBER's modular approach lets you pick gearbox ratios (4:1 through 100:1 or higher) matched to motor size, then verify load capacity and thermal behavior; ChatMRO's RFQ can suggest ratios if you provide target output speed and required torque.
What does EHEDG compliance mean, and which applications require it?
EHEDG (European Hygienic Engineering Design Group) certification ensures a gearbox design eliminates contamination harborage, allows easy cleaning, and meets food-safety standards for direct product-contact zones or washdown environments. STOBER's cLEAN drives meet EHEDG design principles with sealed bearing chambers, smooth (no crevice) external surfaces, and materials compatible with caustic washdown chemicals. Dairy, beverage, frozen-food, and pharmaceutical production require EHEDG compliance; general industrial machinery does not.
Can STOBER drives be customized for specific motor types or OEM interfaces?
Yes, STOBER offers extensive customization including motor coupling type (flange-mount AC, servo AC/DC, brushless DC), bore and flange geometry, and output-shaft configurations (solid shaft, hollow bore, pinion coupling). Lead times and pricing vary by customization scope; standard catalog drives ship quickly with broad OEM compatibility, while custom variants (3–6 week lead) enable seamless integration into existing machinery or prototypes. ChatMRO's RFQ collects your exact interface and motor specifications, then routes quotes to distributors with access to STOBER's custom-build capabilities.