DAT gearbox series - Slewing drives by Liebherr - Product range - Areas of application - Technical design

Sep 17, 2026

Upload by Ben

High-performance, compact, reliable DAT gearbox series slewing drives by Liebherr are presented, covering planetary gearbox components and complete slewing drives for diverse machinery. The document highlights long-term development with vertical integration, advanced design and calculation, extensive testing, and certified torque-bearing materials. It outlines nine series gearbox sizes (DAT 200 to DAT 600), multi-stage gear ratios, high torque capabilities, efficiency per stage, technical design elements, motor attachment options, brakes, assembly positions, backlash adjustment, lubrication, and key application sectors.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages6

Reading Time15 min

AccessFree to download

Overview

Product range

Areas of application

Technical design

Gearbox design

Materials

Motor attachment

Holding brake/parking brake

Assembly position

Adjustment of tooth backlash

Efficiency

Gear structure

Output shaft and bearing

Lubrication

High performance, compact, reliable. DAT gearbox series Planetary gearboxes for slewing drives Components Slewing drives Slewing drives by Liebherr--- DAT 200 DAT 225 DAT 250 DAT 300 DAT 350 DAT 400 DAT 450 DAT 500 DAT 600 Liebherr has been developing, designing and manufacturing high-performance, versatile slewing drives for over 60 years. These drives are characterised by their outstanding quality and excellent reliability. Every year, tens of thousands of planetary gearboxes leave the Liebherr factory in Biberach/Riss (Germany) and successfully stand up to the hostile operating conditions in machinery and equipment of customers both inside and outside the Liebherr Group of companies. With its slewing drives, Liebherr offers its customers a series-produced product range that covers many different application areas. Furthermore, individual solutions can also be produced to meet special requirements. The gearboxes are designed using the very latest development and calculation methods. Extensive testing facilities and an in-house materials laboratory form the basis for ongoing development and even greater improvement. Asa result, Liebherr slewing drives are characterised by maximum torque density with low installation space requirements. Since the Group was established, Liebherr’s strategy has been to focus on a high degree of vertical integration. For example, customers can be offered hydraulic and electric motors which are matched to the slewing drives and designed and manufactured in the company’s own development and production departments. Product range Nine gearbox sizes from the DAT 200 to the DAT 600 are available as series-production units. Further sizes are available on request. The coaxial planetary gearboxes are available as three-stage or four-stage units with a multitude of different gear ratios ranging from i = 20 to i = 1,500. The maximum dynamic torque is 142,000 Nm. Torques as high as 610,000 Nm have been implemented in special-design gearboxes. The series-production gearboxes with a short output shaft can be adapted both for electric motors and for hydraulic motors. Areas of application – Construction machinery, e.g. hydraulic excavators and concrete pumps – Cranes, [e.g. construction](e.g. construction) and mobile cranes – Material handling and recycling equipment – Mining equipment, e.g. mining excavators – Maritime applications, e.g. port and ship cranes, ship propulsion units – Renewable energy, e.g. wind turbines – Automotive engineering, e.g. turntable ladder vehicles – Industry 2 Slewing drives by Liebherr Slewing drives by Liebherr 3 Technical design--- Gearbox design The slewing drives are calculated and designed on the basis of the usual standards. In addition to the decades of experience in transmission engineering, the designers at Liebherrare also supported by measurements taken on the company’s own highfrequency pulsator test stands and FZG-torque change devices. Materials All torque-bearing gearbox components are made of top-quality case-hardened and tempered steels which are certified to the Liebherr works standard. This standard, which goes beyond the currently applicable industrial standards, is based on Liebherr’s decades of experience in a broad range of different application areas. The works standard also includes “3.1” material certification to DIN EN 10204. Motor attachment Liebherr slewing drives are designed for operation both with hydraulic motors and with electric motors. If requested by the customer, the gearboxes can be prepared for motor attachment or can be supplied as a complete unit with the drive already installed. Hydraulic or electric motors from Liebherr are recommended if a particularly compact design is required. The gearboxes can, however, be adapted to allow all motor types from other manufacturers to be fitted. Holding brake/parking brake Gearboxes with hydraulic drive are supplied with an integrated ho

FAQs

What gearbox sizes are available in the DAT series and what is the range of gear ratios?

Nine series-production sizes from DAT 200 to DAT 600 are available, with coaxial planetary gearboxes offered as three-stage or four-stage units and gear ratios from i = 20 to i = 1,500.

How are materials and gearbox components specified for Liebherr slewing drives?

Torque-bearing gearbox components are made of top-quality case-hardened and tempered steels certified to Liebherr’s works standard, including “3.1” material certification to DIN EN 10204.

Which motor types and brake arrangements are supported?

The slewing drives can operate with hydraulic or electric motors; hydraulic setups are supplied with an integrated wet-running, hydraulically released, spring-operated multi-disc holding brake as standard.

Sep 17, 2026

Upload by Ben