Dunkermotoren offers Gearmotor Solutions with Battery-powered Power Tools

Riveting, Stamping, Bending, and Bandaging – Battery-operated and Compact
Handheld power tools have been indispensable in industries like aerospace, construction, and automotive manufacturing for years. A growing DIY culture and their compact size led to an increasing popularity of those tools also in private households. Battery-operated tools are on the rise, replacing corded tools step by step. The new tools are portable, compact, and easy to use. With the development and improvement in lithium-ion battery technology, even larger tools can now run on battery power – tasks like breaking through concrete and masonry with a demolition hammer can be done cordlessly today, giving workers complete freedom of movement.

In the industrial environment, the new technology mainly replaces inefficient pneumatic and hydraulic systems. These tend to have low efficiency, are prone to leaks, and require regular maintenance. Battery-operated devices, on the other hand, use maintenance-free electric motors that integrate seamlessly into the energy-efficient design of the tools. Current challenges are based especially on battery runtime, which remains the limiting factor. However, thoughtful designs typically allow an easy swap just within seconds.

Electric Motors as Key Factor in the Success of Battery-operated Power Tools
The runtime of a cordless power tool is largely determined by the battery itself and the gearmotor solution, which draws power from the battery. Therefore, both components must be perfectly aligned. Electronically commutated (EC) motors have become the preferred choice for battery-operated devices. Brushless EC motors - known as BLDC motors - enjoy particular popularity among manufacturers thanks to their maintenance-free design, eliminating the wear and-tear associated with brushes. In addition to their high efficiency, BLDC motors also offer long lifespans, directly impacting the overall longevity of the tool.

Compact Gearmotor Solutions by Dunkermotoren – Efficiency and Durability for Power Tools
Dunkermotoren, a brand of AMETEK, offers a range of compact, lightweight, and durable BLDC motors that are ideal for use in battery-operated power tools. Alongside the BG 42 and BG 32 (with diameters of 42 and 32 mm), the BGA 22 with a diameter of just 22 mm and an exceptionally high-power density is a perfect match for such devices. This ironless motor features exceptionally smooth operation and allows a particularly long overload operation compared to many competitor products.

The BGA 22 can be combined with a variety of attachments specifically designed for this small motor, making it extremely versatile. For example, when high torque is required, the motor can be coupled with the PLG 22 HT planetary gearbox, enabling forces up to 2.3 Nm to be transmitted while maintaining the compact 22 mm diameter. For increased precision, the highresolution RE 22 encoder can be mounted on the rear side of the motor. In safety-critical tools, the E 22 brake, with a braking torque of over 100 mNm, can quickly stop all moving parts of the power tool, preventing damage and injuries.

As a flexible complete gearmotor solution, the BGA 22 is the perfect fit for lightweight, highperformance battery-operated hand tools used for riveting, stamping, bending, fastening, and bandaging.

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