A large square baler PTO (Power Take-Off) shaft is a mechanical device that transfers power from a tractor to a large square baler. The PTO shaft connects to the back of the tractor and is driven by the tractor's engine. The other end of the PTO shaft is connected to the baler, which uses the power to compress and bale hay or other agricultural products into large, square-shaped bales. The PTO shaft is important for the efficient operation of the baler as it provides the necessary power to operate the baler's mechanisms that compress the hay and form it into bales. It is important to ensure proper maintenance of the PTO shaft to avoid breakdowns or malfunctions during use. PTO Shaft for Krone BIGpack Square Balers PTO Shaft available for Krone BIGPack HDP Large Square Baler Models: 890, 1270, 1290, 1290 HDP, 1290 XC, 12130 HDP, 12130 XC â??Main Shaft: CAT 7/8 SFT SH Series Constant Velocity This Constant Velocity PTO will operate efficiently at 200 Horse Power and beyond @ 1000 RPMs. PTO Shaft for Krone BIGpack Square Balers For increased performance and life, order the splined version: PTO Shaft for Krone BIGpack Square Balers â??Large Square Baler PTO Shaft Design Features Large square balers require a power take-off (PTO) shaft to connect the baler to the tractor's engine. Here are some of the design features you may find in a PTO shaft for a large square baler: Length: Large square balers require longer PTO shafts to reach the power transmission from the tractor engine to the baler. The standard length for a PTO shaft is 1,000 mm, but longer shafts may be required for specific tractor models or baler designs. Splines: PTO shafts typically have multiple splines that fit into the corresponding grooves of the tractor and baler's shafts. Splines can be either internal (male) or external (female). Safety Features: Most PTO shafts for large square balers include safety features designed to protect the operator and prevent accidents. For example, they may include telescoping sections that slide together in the event of an overload, as well as shear pins that break when the PTO shaft becomes blocked. Universal Joints: PTO Shaft Universal joints, commonly referred to as U-joints, are flexible joints that connect the PTO shaft to the baler and tractor. They allow the shaft to bend and flex without breaking or binding, which is essential for smooth power transmission. Guards: PTO shaft guards are protective covers that prevent loose clothing, jewelry, or other objects from getting caught in the spinning shaft. Guards may be made of metal, plastic, or other materials and must be secured to the tractor and baler to prevent them from becoming dislodged during use. Overall, PTO shafts for large square balers must be designed to withstand high torque and power output while ensuring the safety of the operator and preventing damage to the machinery.