May 18, 2026 — Dunkermotoren, a global leader in precision drive solutions, announced the expansion of its gearbox portfolio with a new generation of WG combination gearboxes, engineered for applications that require very high reduction ratios, precise positioning and a compact right-angle design — all in one integrated and economically efficient solution.
The new WG series combines a worm gearbox with an integrated planetary gearbox, enabling reduction ratios that conventional right-angle or single-stage gearboxes cannot achieve. While right-angle gearboxes are already relatively compact by nature, the WG design offers an especially favorable ratio of reduction to installation size, making it possible to realize very high ratios without a disproportionate increase in gearbox dimensions.
This clever combination of proven technologies delivers high torque transmission and excellent positioning accuracy, while helping OEMs simplify mechanical design and create more flexible machine layouts.
Solving space, torque and precision challenges — Simply and efficiently
Many modern machines — especially in automation, robotics, and medical technology — must balance tight installation spaces with increasing demands for torque, accuracy, and cost efficiency. The WG combination gearboxes are designed to address these challenges in a simple, robust and application-oriented way.
Compared to single-stage bevel gearboxes, which are very compact but offer only a limited reduction range, the WG series enables significantly higher reduction ratios while remaining space-efficient. At the same time, spur gearboxes are typically more economical at low ratios, but are also limited in terms of achievable reduction.
The WG combination gearbox closes this gap by offering a balanced solution in terms of reduction range, installation size, and overall system cost, especially for applications that exceed the limits of single-stage concepts.
By transmitting power at a right angle while supporting multi-stage reduction in a compact form factor, the WG series enables:
- Very high reduction ratios with an excellent ratio of reduction to gearbox size
- High acceleration and peak torque capability for dynamic motion
- Accurate, repeatable positioning for sensitive adjustment and swivel movements This makes the WG gearboxes particularly well suited for swivel arms, positioning systems, lifting and adjustment axes, and other applications where simplicity, precision, and load capacity must go hand in hand.
Proven technology, cleverly combined
The WG series is based on well-established gearbox technologies, intelligently combined to meet the rising requirements of industrial and medical applications. Each gearbox stage used in the WG combination is already proven in the field — both as a standalone solution and within combined configurations. This approach:
- Reduces technical and integration risk
- Ensures reliable performance across multiple stages
- Supports long service life under demanding duty cycles
- Enables a very attractive ratio of performance, reduction capability and cost Designed for Demanding Industrial and Medical Use
Developed for industrial automation, medical technology and mobile systems, the WG combination gearboxes deliver reliable performance even under high loads and dynamic operating conditions. Defined self-locking characteristics and low-noise operation further expand their suitability for sensitive environments, including operating tables, patient beds, and medical handling equipment.
The robust mechanical design supports high acceleration torques and consistent performance, even where compact dimensions and economic efficiency are critical.
Multiple sizes, broad motor compatibility
The new WG combination gearboxes are available in three sizes—WG 52, WG 63, and WG 75 - and can easily be adapted to a wide range of Dunkermotoren motor platforms.
Thanks to their efficiency and compact design, the WG series is also well suited for battery-powered, mobile, and autonomous systems, where energy consumption, space, and system cost must be carefully balanced.
“Instead of developing an entirely new concept, we deliberately combined proven gearbox technologies in a smart way,” said Benedict Hermann, manager R&D Gearboxes at Dunkermotoren. “The WG combination gearboxes offer a very attractive ratio of reduction to size and cost, making them an efficient and reliable solution for the increasing demands in industrial and medical technology.”
