Overhead Crane Hook

Overhead Crane hook introduction

• The crane operators use the Overhead Crane Hook as a key component for various lifting operations. They suspend it on the wire rope of the lifting mechanism using the pulley block and other components, and it bears the entire load of the lift. Designers and manufacturers must ensure the lifting hook meets safety standards to guarantee safety and reliability during operations.
• Many types of lifting hooks exist. Manufacturers divide them into forged hooks and laminated hooks based on manufacturing methods, and into single hooks and double hooks based on shape. The main difference between forged and laminated hooks lies in their manufacturing method, while single and double hooks differ in the number of hooks. In practice, operators use single hooks for loads not exceeding 75 tons and double hooks for heavier loads since double hooks have a higher bearing capacity.
• When using lifting hooks, operators must conduct daily inspections and maintenance. This includes cleaning the hook assembly, checking the hook opening and wear in critical areas, examining the wear of the pulley groove and rim, ensuring the hook’s rotating part moves freely, and inspecting the anti-unhooking device.
• The safety and stability of the lifting hook significantly impact safe production. Therefore, users should regularly perform daily safety inspections and maintenance on the hook and conduct periodic inspections to ensure safe operations.

Please refer to the table below for Overhead crane hook selection

3.2t/5t                                                                                                   10t

 

 

 

 

 

 

 

 

16t                                                                                      20t/32t

 

 

 

 

 

 

 

 

50t                                                                                      75t

 

 

 

 

 

 

 

100t                                                                                      200t

 

 

 

 

 

 

 

Specs (t)	Mandmensions(mm)												Wire rope parameters		Weight (kg)
	A	B	H	E	G	L	L1	L2	C	U	ØD1	ØD	Diameter(mm)	Number
3.2	775	350	420	320	150	220	/	/	50	65	/	300	11-14	4	80
5	858	370	480	320	184	240	/	/	65	85	/	350	11-14	4	100
10	1080	378	410	410	243	/	92	/	90	120	380	250	11-14	6	200
16	1330	506	485	485	307	/	172	/	115	150	500	310	14-20	6	330
20	1415	524	510	510	333	136	93	/	130	170	/	500	16-20	8	460
32	1740	604	620	620	420	155	105	/	160	210	/	610	18-22	8	845
50	1965	750	710	710	510	170	109	/	205	270	710	610	20-22	10	1500
75	2335	970	930	930	600	185	135	/	250	320	800	500	26-32	10	2500
100	3130	1360	1100	1100	955	350	131	200	270	355	1000	800	28-34	12	4200
200	3548	1617	1185	1185	1298	159	264	/	/	340	900	800	30-38	16	9100

Scrap standards

Scrap the hook if any of the following conditions occur:

• Cracks appear.
• The wear of the dangerous section reaches 10% of the original size.
• The opening increases by 15% compared to the original size.
• The hook body twists and deforms by more than 10°.
• Plastic deformation occurs in the dangerous section of the hook or the hook neck.
• The hook thread corrodes.
• Replace the bushing when it wears down to 50% of the original size.
• Replace the mandrel when it wears down to 5% of the original size.