Electric slewing cranes are mainly used for lifting oil pipes, light poles, spare parts and sundries and daily necessities on board. The working principle is to use the electric motor to convert electrical energy into mechanical energy, drive the slewing mechanism through gear transmission or hydraulic transmission to realize the horizontal rotation of the crane. The slewing mechanism is mainly composed of driving device, transmission device and slewing support device, driving device provides power, transmission device transmits power and controls the speed, slewing support device supports the lifting object and realizes horizontal rotation.

Model	YQ0.5-3.5	C0.98-5.5	D0.98TX5.9	D0.98TX15	D2.5TX5.9
Safe working load (T)	0.5	0.96	0.98		2.5
Lifting speed (m/min)	10	9	10	9	18
Lifting height (m)	25	15	15	25	15
Slewing angle (°)	330	330	360		360
Transverse inclination (°) / Longitudinal inclination (°)	≤5/≤2	≤5/≤2	≤5/≤2		≤5/≤2
Specification of steel wire rope(mm)	∅8	∅8-18*19+FC-1870	∅10-18*19+FC-1670		∅11-18*19+FC-1770
Slewing speed (r/min)	≥0.25	/	≥0.25		≥0.25
Maximum slewing radius (m)	3.5	5.5	5.9	15	5.9
Minimum slewing radius (m)	/	/	4	3	2
Type of electrical	YZ90L-6-H//Y90L-4-H	/	Y112M-6-H//Y90-6-H	Y160M-4-H	YZ112M-4-H//YZ100M-4-H//YZ100L1-4-H
Power (KW)	1.1/1.5	/	2.2//1.1	11//13	4//4.78; 3//3.6; 2.2//2.63
Luffing time (s)	/	/	/	/	/
Power supply system (V, HZ, P)	380V/50HZ	/	380V/50HZ; 440V/60HZ	380V/50HZ; 440V/60HZ	380V/50HZ; 440V/60HZ
Rotational speed (r/min)	960//1400	/	940/1150;910/1130	940/1150;910/1130	1400//1670