Ballasting for Engine Horsepower
A guide to ballasting tractors is to use engine horsepower combined
with necessary ballast for a particular job—light, medium, or
heavy. Start process with lightest ballast that can handle job. Then
add ballast as necessary to get performance desired.
NOTE: Correct weight split must be maintained when adding or
removing ballast. Cast weight is preferred to get best tractive performance.
More or less weight is necessary when different travel speeds
are used. Higher speeds do not require as much weight. Final indication
of correct ballast is wheel slip measured in field.
NOTE: Radar is recommended to monitor wheel slip. Checking wheel
slip manually is possible but can only show slip in one area of field.
Knowing correct average wheel slip is necessary to maintain optimum
tractive performance.
Add more weight if slip is excessive. Remove weight if there
is less than minimum percent slip.
If implement pull at full load is 5.5 mph (8.8 km/h) or more,
tractor can operate without ballast. Medium ballast is a better choice
when operating at full load between 4.5 and 5.5 mph (7.2 and 8.8 km/h).
Heavy ballast can only be used for few implements (such as deep rippers)
which require full load traction below 4.5 mph (7.2 km/h).
IMPORTANT: Never add ballast that results in continuous full
power loads below 4.1 mph (6.6 km/h). Continued operation below
4.1 mph (6.6 km/h) can shorten power train life.
|
Tractor
|
Engine kW (hp.)
|
kg/kW (lb./hp.)
|
Total kg (lb.)
|
|
9370R
|
272 (370)
|
71 (116)
|
22105 (48700)
|
|
9420R
|
309 (420)
|
71 (116)
|
22105 (48700)
|
|
9470R
|
346 (470)
|
71 (116)
|
24721 (54500)
|
|
9520R
|
382 (520)
|
71 (116)
|
27216 (60000)*
|
|
9570R
|
419 (570)
|
65 (105)*
|
27216 (60000)*
|
|
9620R
|
456 (620)
|
60 (97)*
|
27216 (60000)*
|
|
*Maximum ballast for 9520R, 9570R, and 9620R
is 27216 kg (60000 lb.).
|
| |
Light Ballast
|
Medium Ballast
|
Heavy Ballast
|
|
Ground Speed
|
Above 8.9 km/h (5.5 mph)
|
7.4—8.6 km/h (4.6—5.5 mph)
|
7.2 km/h (4.5 mph) or Less
|
| |
|
|
|
|
kg/kW (lb./hp)
|
60 (97) or Less
|
62—65 (101—106)
|
68—71 (111—116)**
|
| |
|
|
|
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**Maximum ballast is 71 kg/kW (116 lb./hp).
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TO84419,0000126-19-20141212
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