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Model DD3170 Rotary-Kiln Gear Drive Unit
| Original manufacturer | GDW, SKET |
| Used for | 4.0 m dia. x 110 m Rotary kiln |
| Rating / Motor rating | 180 kW |
| Design factor / Factor KA | 1.62 (no standardised design method) |
| Driving speed | 960 rpm |
| Transmission ratio | 192.2 |
| Bearings fitted | Plain journal bearings |
| Weight of gear drive unit | Complete with external bearing, auxiliary drive (without motor) 57.000 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 317V-4N Gear Drive Unit
| Rating | 250/386 kW |
| Factor KA | 2.0 (designed to DIN 3990 Teil 11) |
| Driving speed | 980/1,500 rpm |
| Transmission ratio | 192.0 |
| Bearings fitted | Antifriction bearings |
| Weight | Complete with separate external bearing and auxiliary drive, without motors approx. 30,000 kg |
Drive configurations for higher kiln speeds can be designed and manufactured upon request.
Note
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.
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DD3170 Original drawingDownload PDF-file |
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Vakoma 317V-4N OutlineDownload PDF-file |