The centre pivot can be as short as a single span to almost any length.  The lateral pipe is supported about 3 m above the ground by a truss network. The lateral pipes are typically 6 5/8", chromium nickel, fully galvanized, poly lined or epoxy coated (see pictures).

Individual span/tower lengths range from 35-64 m.  Pivot lengths typically range from 152-1000 m (irrigating up to 285-310 ha).  The pivot lengths can be increased with overhangs from 2-28 m or with end guns (see picture), at the end of the span or overhang. The end guns need a booster pump before the gun to improve end gun performance. Based on the flow of the gun, the booster pumps can be 2-5-7.5 HP (1.9-2.4-3.6 bar).

The centre pivots can also be equipped with corner irrigation machines (see pictures). The corner machine takes care of the corners which cannot be reached by the centre pivots themselves. The corner pivot equipment consist of an extra tower that folds back along the main centre pivot lateral pipeline.  It is activated by controls when the beginning of the missing corner is reached.  When the system approaches a corner to be irrigated, the corner attachment swings out and the main lateral slows down. As the system exits the corner, the corner attachment swings back into position behind the main system. The corner pivot can irrigate an other 6-9 ha. It is a really expensive unit of the Centre Pivot, therefore should be used irrigating real high value crops.

Depending on the speed of rotation of the pivot 5-25 mm of water can be applied in a single pass/revolution.  To ensure uniform water application even on hilly or rolling terrain the sprayers are equipped with pressure regulators (see pictures). If there is a variation of 10% or more due to field elevation, pressure regulators are recommended.

The centre pivot can be fixed pivot, skid tow, 2 or 4 wheel E-Z tow pivot (see picture).  On towable pivot machines, wheels can be rotated 90⁰ for moving the machine from one field to another (see picture). Towable pivots can be

 

	pivots that are towed one or two times per season - this system would normally have a skid type pivot point
	pivots that are towed one or more times per week - this system is equipped with two or four wheeled centre pivot point

The fixed pivot is on reinforced concrete slab with cast in stone bolts for simple tightening of centre tower. The size of the slab can be 3.5 m x 3.5 m or 4.2 m x 4.2 m (see picture).

To find out more about other specifications (span dimension, pipes, truss braces/rods, tower weights and couplings, alignment control, tower legs, tower switchbox, tower structure, wheel gearbox, wheel and centre drive gearbox, drive shaft, tyres and rims), please visit each manufacturer's website on the Links page.