Double-disk openers with aluminum boots work well in well-prepared seedbeds and dry soil. Blades bolt on to allow use of a broad range of depth-gauging attachments.
Double-disk openers with cast-iron boots are also available. They are heavier and have greater clearance inside of double disk openers for better performance in wet, sticky soils.
Boot |
Opener weight |
Spring down pressure* |
Total penetration force |
|
|
Minimum |
Maximum |
Minimum |
Maximum |
Aluminum |
10.4 kg (23 lb) |
11.3 kg (25 lb) |
43 kg (95 lb) |
21.8 kg (48 lb) |
53.5 kg (118 lb) |
Cast iron |
12.7 kg (28 lb) |
11.3 kg (25 lb) |
43 kg (95 lb) |
24 kg (53 lb) |
56.2 kg (124 lb) |
*NOTE: The down pressure figures are based on 25.4 mm (1 in.) of push rod showing above spring.