Specifications:
The document outlines the specifications for different models of cranes, specifically the KBK-I, KBK-II, and KBK-III. Each model has varying load capacities, bending radii, and bending angles. The KBK-I model supports up to 500kg with a bending radius of >=1000mm and a bending angle between 10° and 90°. The KBK-II model supports up to 1000kg with a bending radius of >=1500mm. The KBK-III model supports up to 2000kg with similar bending radius and angle specifications.

Procedures and Parameters:
The document details the maximum hanger spacing for single and double girder systems, rotation radius, and lifting height. It specifies control methods, which can be either pendent or remote control, and rotation methods, which can be manual or motorized. Lifting speed ranges from 0.4 to 0.8 m/min, and trolley speed ranges from 0 to 20 m/min. Rotation speeds are provided for single and double speed configurations.

Norms and Recommendations:
The document recommends specific rotation angles (180°, 270°, 360°) and provides guidelines for lifting capacities ranging from 500kg to 5000kg. It also includes information on the rotational angle and radius for different capacities.

Key Data from Tables:
The tables provide detailed information on the load capacities, bending radii, and bending angles for each crane model. They also include data on lifting heights, rotation angles, and speeds for various configurations.

Critical Information:
Important parameters such as load capacity, bending radius, and control methods are highlighted. The document emphasizes the importance of adhering to specified lifting speeds and rotation angles to ensure safe and efficient crane operation.