Konrad Marine Equipment
Konrad 600 Series Stern Drives (600-A)
600-A versions of the Konrad 620, 660 and 680 stern drives, combining the larger 600 Series upper gears with the original transom assembly.
Description
The Konrad 600-A drives are the earlier versions of the 600 Series. They share the larger 600 Series upper gears but use the original transom assembly, whereas the current 600-B units add a larger transom assembly with integrated steering.
Models
- 620: single-propeller workhorse drive for demanding working conditions.
- 660: dual-prop drive built for fast patrol and military intercept; designed for 7-15 meter (23-50 foot) vessels seeking speeds up to 60 knots (70 mph).
- 680: dual-prop drive with carrying capacities up to 8.4 metric tons (over 18,500 lbs.) per drive, operating most efficiently around 40 knots (46 mph).
Key features
- Oversized bearings and thicker walled casings
- One-piece propeller shaft
- Continuous oil circulation for cool operation
- No exhaust through the drive
- Precision machined super alloy gears
- No cone clutch
Specifications
| Models | 620 (single prop), 660 and 680 (dual counter-rotating props) |
|---|---|
| 660 vessel length | 7-15 m (23-50 ft) |
| 660 speed | up to 60 knots (70 mph) |
| 680 carrying capacity | up to 8.4 metric tons (over 18,500 lbs.) per drive |
| 680 efficient speed | around 40 knots (46 mph) |
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