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Model DD3200 Rotary-Kiln Gear Drive Unit

Original manufacturer GDW
Used for 4.0 m dia. x 110 m Rotary kiln
Rating / Motor rating 170 kW
Design factor / Factor KA 1.6 (no standardised design method)
Driving speed 975 rpm
Transmission ratio 177.5
Bearings fitted Plain journal bearings
Weight of gear drive unit (without motor) 39,000 kg
Rehabilitation capability of the original gear drive High expenditure; hardened and tempered teeth; re-design necessary. Previous gears not designed to meet fatigue strength requirements for higher rating.

Proposed Substitute:
Vakoma 320V-4N Gear Drive Unit

Rating 250 kW
Factor KA 2.0 (designed to DIN 3990 Part 11)
Driving speed 980 rpm
Transmission ratio 177.5
Bearings fitted Antifriction bearings
Weight approx. 23,000 kg

Drive configurations for higher kiln speeds can be designed and manufactured upon request.

Potential replacement with heavy-duty gear drive unit that comes with gears designed to meet fatigue strength requirements. Antifriction bearings designed for > 60,000 h (approx. 8 years). Mounting on foundation and ring-gear guarding need to be co-ordinated.

DD3200 Original drawingDownload PDF-file
Vakoma 320V-4N OutlineDownload PDF-file

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