V-belt CX 49 / 1250 Li 22x14 MM - PIX X'tra® is a Cogged V-belts in CX profile. The Raw-Edge construction provides direct side contact in the V-groove, while the timing underside makes the belt more flexible around the pulleys.
PIX X'tra® is built like a Raw-Edge V-belt. The sides lie directly against the pulley grooves and the serrated underside helps the belt bend around the pulleys. The serrations are on the underside and are used for flexibility while still transmitting power through the sides of the belt.
CX is a timing variant of the C profile. The profile, the dimensions 22 x 14 mm and the lengths Li 1250 mm, Ld 1306 mm and La 1338 mm describe the physical size of the belt.
The belt is given with Li, Ld and La because V-belts are measured differently depending on the measuring pu . Here Li is 1250 mm, Ld 1306 mm and La 1338 mm.
The V-belt is made of rubber with polyester reinforcement. The reinforcement helps the belt to maintain a stable length during operation, while the rubber provides the necessary flexibility around the pulleys.
The timing underside is particularly relevant for smaller pulley diameters, because the belt can bend more easily without becoming unnecessarily stiff.
CX 49 is the classic supplier designation for the belt. The profile is CX, and the belt must be used with pulleys with the same profile.
Li is the internal length, Ld is the effective length, and La is the external length. All three measurements are length measurements in millimeters.
CX is a timing classic V-belt profile. The belt has raw-edge sides and a timing underside.