• Centerliner

    Fertilizer spreaders

centerliner slider2

The Centerliner system

The unique property of the Centerliner is that each of the 2 spinner discs – with 4 spoons each – covers the whole spreading width.
The spreading patterns overlap each other as a result.
1. On most twin-disc spreaders, the spinner discs rotate from centre to outside (seen from the rear). Each disc produces a half spreading pattern. These two patterns are then laid against each other in the middle behind the tractor. Only a very accurate dose rate setting, that has to be repeated when switching to another type of fertiliser, can prevent stripes behind the middle of the tractor due to a wrong overlap. The Centerliner does not have this problem, because the 2 spreading patterns overlap each other completely over the entire spreading width. This is in fact a full, double overlap!
2. With most twin-disc spreaders the spreading pattern slopes steeply towards the sides. The adjoining working bout has to link up with previous bout, which means that even minor driving faults will easily lead to stripes in the crops. The Centerliner spreads up to the previous tramline, which means this problem doesn’t apply. Hence a driving error of 1 meter or more is a lot less critical and doesn’t disturb the combined spreading pattern. So not only does the Centerliner provide a double overlap per working pass, but it does the same with each consecutive bout. Therefore we can easily state that the TULIP Centerliner provides 2x a double overlap.

Calibration bowl

The dose rate may vary under the influence of pellet size and humidity. To ensure an accuratedose rate, the calibration bowl can be used to quickly check flow rates prior to spreading.

SE C and SX C

The Centronic II GPS electronic control system adjusts the outputfrom the Centerliner to any change of the tractor forward speed. This way the amount of fertiliser spread per hectare stays constant, independent from tractor speed. From the tractor cabin, the rate can be altered quickly during driving. The screen displays among others: forward speed, desired kg/ha, shutter position, spinner disc rpm, distance driven and worked area.

Spoons and bowls

The special shape of the spoons is the result of many tests. The suction power of the spoons together with the forced dose result in a constant and even supply of fertilizer. The spoons of the left spinner disc are positioned at a 45° angle compared to the spoons of the right disc. This results in no collisions between fertilizer coming from different discs. The result is an even and synchronised dose. The bowls are very close to the spinner discs for an accurate spreading pattern even on inclines. The drop point is in the centre so the fertilizer gently accelerates along the vanes instead of getting smashed by it.

Quadruple spreading pattern

The quadruple spreading pattern leads to a very low variation coefficient. In practise stripes are detected very rarely. Every square meter in the field receives 16 small doses of fertiliser. As a result the machine is very forgiving for user errors. This makes setting up the machine easier for you.


• 2 x 4 spoons rotating from outside to centre, resulting in a quadruple overlapped spreading pattern
• Hydraulic shutter control
• Setting the rate is very simple
• Guards for a clean tractor
• Walterscheid PTO shaft
• SX: two threaded sieves (SE: two punch hole sieves)
• SX: different gearsets possible
• SX: standard towing eye
• SX: heavy duty one-piece hopper extension
• Standard: side spreading by tilting the machine
• Optional: border spreading with Centraside