Air Cart Fan Recommendations
When determining the fan option that will best suit your requirements, consider:
- drill size and spacing;
- typical seeding speed and expected maximum product rates;
- hydraulic requirements of the air drill paired with the air cart;
- hydraulic capacity of the tractor.
The High-Speed Fan is equipped with a 12 cc hydraulic motor that is able to achieve up to 6,000 rpm. To achieve maximum performance and reduce possible coupler failures, ¾" hydraulic couplers are required.
|Single, Regular/Single, High-Speed*
* max 6,000 rpm
Recommended Hydraulic Flow Requirements
When operating independent seed drills, hydraulic flow requirements are highest when turning in the headlands. The recommended flow listed in the chart above allows the seeding system to be raised and lowered within two headlands. It should be noted that the recommended fan requirements are for the maximum operational speed (rpm) of the fan.
Minimum Hydraulic Flow Requirements
If the recommended values cannot be achieved, minimum flow will provide adequate performance in most instances. If the hydraulic flow is less than the recommended, the fans may slow down and the openers may lift slowly in the headlands. This may result in the requirement for three headlands. In typical operating conditions, one, or both fans are operating at less than maximum output levels, which will reduce hydraulic requirements.
Regardless of fan selection, the use of 3/4" hydraulic couplers will maximize fan performance. Avoid costly performance reductions by minimizing oil flow restrictions across the entire system.
Hydraulic Pressure Drop Off
With many tractors, maximum hydraulic flow drops off sharply prior to maximum operating pressure. By setting the tractor pressure just below maximum psi, sudden drop off of hydraulic flow should be avoided.
Hydraulic Recommendations for Air Drills
It is important to consider the hydraulic requirements of both the drill and air cart to ensure your tractor's hydraulics are up to the task.
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