Split window wheel

The utility model relates to a window wheel, which is a fitting for sliding aluminium doors and windows. The utility model is composed of an adjusting screw, an inner shell and a wheel; the inner shell and the wheel can be orderly sheathed with an outer shell; grooves are respectively arranged on both sides of the inner shell; a wheel shaft can penetrate through the grooves for fixing the inner shell and the wheel; both ends of the wheel shaft extend outside the grooves; the wheel can be driven to move from top to bottom. Notches are respectively arranged on both sides of the outer shell; both ends of the wheel shaft are clamped to the notches and can move from top to bottom along the notches. The inner and the outer shells of the window wheel are independent; the inner shell can be taken out for replacement, when only the adjusting screw is unscrewed; the operation is convenient and quick. The wheel shaft is clamped to the grooves on both sides of the inner shell and the notches on both sides of the outer shell; the window wheel can not optionally swing; the smoothness is good.