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What types of crane hooks are there?

2025-07-29 04:32:11

There are many types of crane hooks, which can be divided into the following categories according to their structure, purpose and load-bearing method. Each type has its specific application scenarios and technical requirements:

1. Classification by structural form

1.  Single hook (single-limb hook)

  • Features : simple structure, light weight, suitable for small and medium tonnage loads.

  • Common types :

    • Straight handle single hook : the hook body and the threaded straight rod are forged as one piece (as per GB/T 10051.1 standard).

    • Eye-type single hook : The top is a lifting eye hole, connected by a pin (such as American standard Crosby S-414).

  • Application scenarios :

    • Construction sites (tower cranes), workshop light lifting (≤20t).

2.  Double hook (double-limb hook)

  • Features : Symmetrical double hook design, more balanced force and high load-bearing capacity.

  • Common types :

    • Forged double hook : integrally forged, with the hook mouth facing inwards (as per GB/T 10051.3).

    • Plate type double hook : It is formed by welding steel plates and is used for large tonnage (such as ASME B30.10).

  • Application scenarios :

    • Port container cranes (50~200t), metallurgical casting (lifting of molten steel ladle).

3.  Rotating hook

  • Features : Built-in bearing or roller structure, can rotate 360 degrees freely to avoid wire rope entanglement.

  • Technical parameters :

    • Rotational resistance torque ≤ 50 N·m (ISO 2415).

    • Bearing type: Crossed roller bearings (such as INA YRT series).

  • Application scenarios :

    • Ship deck hoisting and wind turbine installation.

4.  Anti-unhooking (safety hook)

  • Features : With spring lock or locking device to prevent the sling from accidentally slipping off.

  • Standard requirements :

    • The lock opening force is ≤10N, and the anti-separation force after closing is ≥10% of the rated load (ISO 2415).

  • Application scenarios :

    • High-altitude operations and lifting of dangerous goods.

2. Classification by Manufacturing Process

1.  Forged hook

  • Process : alloy steel die forging + heat treatment (quenching + tempering), fiber streamline continuous.

  • Advantages : high strength and fatigue resistance (lifespan is 3 to 5 times longer than cast hooks).

  • Representative standards : GB/T 10051.1, DIN 15401.

2.  Plate type hook (laminated hook)

  • Process : multi-layer steel plate cutting and welding, machining after heat treatment.

  • Advantages : low cost, suitable for large tonnage (such as above 500t).

  • Representative standards : ASME B30.10, FEM 1.001.

3.  Casting hook

  • Process : Sand casting (gradually being phased out and only used in non-standard light-load scenarios).

  • Disadvantages : Porosity and shrinkage are easily generated inside, and safety is low.

3. Classification by purpose

1.  Universal hook

  • Standard type : complies with GB/T 10051 and ISO 2415, used for conventional lifting.

2.  Metallurgical hook

  • High temperature resistant type :

    • Material: 25Cr2MoV (temperature resistant 600℃).

    • Surface treatment: Heat resistant coating (such as Cerakote).

  • Application : lifting of ladles and molten metal.

3.  Marine engineering hook

  • Anti-corrosion type :

    • Material: 316 stainless steel or galvanized alloy steel.

    • Standard: DNVGL-OS-E402 (Det Norske Veritas).

4.  Explosion-proof hook

  • Certification : ATEX/IECEx (Explosive and Flammable Atmospheres).

    • Design: Non-sparking copper alloy or flameproof housing.

4. Special function hook

1.  Electric rotating hook

  • Features : Built-in motor drive, remote control rotation (such as port automation crane).

2.  Dynamometer hook

  • Integrated sensor : real-time load display (accuracy ±1%), overload alarm.

3.  Quick-change hook

  • Quick connector : The spreader can be changed without tools (e.g. for excavators).

5. Selection reference table

type Carrying range Advantages Typical brands
Forged single hook 0.5~50t Lightweight and high strength Crosby, Jiangsu Tongrun
Plate type double hook 50~500t Large tonnage economy RUD, Henan Weihua
Rotating anti-unhook 10~100t Anti-winding and anti-falling Gunnebo, Shanghai Zhenhua
Metallurgical high temperature resistant hook 20~200t Heat and shock resistance Baowu Group

6. Notes

  1. Mixing prohibited : Metallurgical hooks cannot be used in normal working conditions (risk of material brittleness).

  2. Periodic inspection : The hooks shall be inspected annually according to GB 6067.1.

  3. Matching sling : The hook size must be 1.5 times larger than the sling diameter (to prevent wear).

Through reasonable selection and standardized use, the performance of the hook can be maximized and safety can be guaranteed!

There are many types of crane hooks, which can be divided into the following categories according to their structure, purpose and load-bearing method. Each type has its specific application scenarios and technical requirements:

1. Classification by structural form

1.  Single hook (single-limb hook)

  • Features : simple structure, light weight, suitable for small and medium tonnage loads.

  • Common types :

    • Straight handle single hook : the hook body and the threaded straight rod are forged as one piece (as per GB/T 10051.1 standard).

    • Eye-type single hook : The top is a lifting eye hole, connected by a pin (such as American standard Crosby S-414).

  • Application scenarios :

    • Construction sites (tower cranes), workshop light lifting (≤20t).

2.  Double hook (double-limb hook)

  • Features : Symmetrical double hook design, more balanced force and high load-bearing capacity.

  • Common types :

    • Forged double hook : integrally forged, with the hook mouth facing inwards (as per GB/T 10051.3).

    • Plate type double hook : It is formed by welding steel plates and is used for large tonnage (such as ASME B30.10).

  • Application scenarios :

    • Port container cranes (50~200t), metallurgical casting (lifting of molten steel ladle).

3.  Rotating hook

  • Features : Built-in bearing or roller structure, can rotate 360 degrees freely to avoid wire rope entanglement.

  • Technical parameters :

    • Rotational resistance torque ≤ 50 N·m (ISO 2415).

    • Bearing type: Crossed roller bearings (such as INA YRT series).

  • Application scenarios :

    • Ship deck hoisting and wind turbine installation.

4.  Anti-unhooking (safety hook)

  • Features : With spring lock or locking device to prevent the sling from accidentally slipping off.

  • Standard requirements :

    • The lock opening force is ≤10N, and the anti-separation force after closing is ≥10% of the rated load (ISO 2415).

  • Application scenarios :

    • High-altitude operations and lifting of dangerous goods.

2. Classification by Manufacturing Process

1.  Forged hook

  • Process : alloy steel die forging + heat treatment (quenching + tempering), fiber streamline continuous.

  • Advantages : high strength and fatigue resistance (lifespan is 3 to 5 times longer than cast hooks).

  • Representative standards : GB/T 10051.1, DIN 15401.

2.  Plate type hook (laminated hook)

  • Process : multi-layer steel plate cutting and welding, machining after heat treatment.

  • Advantages : low cost, suitable for large tonnage (such as above 500t).

  • Representative standards : ASME B30.10, FEM 1.001.

3.  Casting hook

  • Process : Sand casting (gradually being phased out and only used in non-standard light-load scenarios).

  • Disadvantages : Porosity and shrinkage are easily generated inside, and safety is low.

3. Classification by purpose

1.  Universal hook

  • Standard type : complies with GB/T 10051 and ISO 2415, used for conventional lifting.

2.  Metallurgical hook

  • High temperature resistant type :

    • Material: 25Cr2MoV (temperature resistant 600℃).

    • Surface treatment: Heat resistant coating (such as Cerakote).

  • Application : lifting of ladles and molten metal.

3.  Marine engineering hook

  • Anti-corrosion type :

    • Material: 316 stainless steel or galvanized alloy steel.

    • Standard: DNVGL-OS-E402 (Det Norske Veritas).

4.  Explosion-proof hook

  • Certification : ATEX/IECEx (Explosive and Flammable Atmospheres).

    • Design: Non-sparking copper alloy or flameproof housing.

4. Special function hook

1.  Electric rotating hook

  • Features : Built-in motor drive, remote control rotation (such as port automation crane).

2.  Dynamometer hook

  • Integrated sensor : real-time load display (accuracy ±1%), overload alarm.

3.  Quick-change hook

  • Quick connector : The spreader can be changed without tools (e.g. for excavators).

5. Selection reference table

type Carrying range Advantages Typical brands
Forged single hook 0.5~50t Lightweight and high strength Crosby, Jiangsu Tongrun
Plate type double hook 50~500t Large tonnage economy RUD, Henan Weihua
Rotating anti-unhook 10~100t Anti-winding and anti-falling Gunnebo, Shanghai Zhenhua
Metallurgical high temperature resistant hook 20~200t Heat and shock resistance Baowu Group

6. Notes

  1. Mixing prohibited : Metallurgical hooks cannot be used in normal working conditions (risk of material brittleness).

  2. Periodic inspection : The hooks shall be inspected annually according to GB 6067.1.

  3. Matching sling : The hook size must be 1.5 times larger than the sling diameter (to prevent wear).

Through reasonable selection and standardized use, the performance of the hook can be maximized and safety can be guaranteed!

There are many types of crane hooks, which can be divided into the following categories according to their structure, purpose and load-bearing method. Each type has its specific application scenarios and technical requirements:

1. Classification by structural form

1.  Single hook (single-limb hook)

  • Features : simple structure, light weight, suitable for small and medium tonnage loads.

  • Common types :

    • Straight handle single hook : the hook body and the threaded straight rod are forged as one piece (as per GB/T 10051.1 standard).

    • Eye-type single hook : The top is a lifting eye hole, connected by a pin (such as American standard Crosby S-414).

  • Application scenarios :

    • Construction sites (tower cranes), workshop light lifting (≤20t).

2.  Double hook (double-limb hook)

  • Features : Symmetrical double hook design, more balanced force and high load-bearing capacity.

  • Common types :

    • Forged double hook : integrally forged, with the hook mouth facing inwards (as per GB/T 10051.3).

    • Plate type double hook : It is formed by welding steel plates and is used for large tonnage (such as ASME B30.10).

  • Application scenarios :

    • Port container cranes (50~200t), metallurgical casting (lifting of molten steel ladle).

3.  Rotating hook

  • Features : Built-in bearing or roller structure, can rotate 360 degrees freely to avoid wire rope entanglement.

  • Technical parameters :

    • Rotational resistance torque ≤ 50 N·m (ISO 2415).

    • Bearing type: Crossed roller bearings (such as INA YRT series).

  • Application scenarios :

    • Ship deck hoisting and wind turbine installation.

4.  Anti-unhooking (safety hook)

  • Features : With spring lock or locking device to prevent the sling from accidentally slipping off.

  • Standard requirements :

    • The lock opening force is ≤10N, and the anti-separation force after closing is ≥10% of the rated load (ISO 2415).

  • Application scenarios :

    • High-altitude operations and lifting of dangerous goods.

2. Classification by Manufacturing Process

1.  Forged hook

  • Process : alloy steel die forging + heat treatment (quenching + tempering), fiber streamline continuous.

  • Advantages : high strength and fatigue resistance (lifespan is 3 to 5 times longer than cast hooks).

  • Representative standards : GB/T 10051.1, DIN 15401.

2.  Plate type hook (laminated hook)

  • Process : multi-layer steel plate cutting and welding, machining after heat treatment.

  • Advantages : low cost, suitable for large tonnage (such as above 500t).

  • Representative standards : ASME B30.10, FEM 1.001.

3.  Casting hook

  • Process : Sand casting (gradually being phased out and only used in non-standard light-load scenarios).

  • Disadvantages : Porosity and shrinkage are easily generated inside, and safety is low.

3. Classification by purpose

1.  Universal hook

  • Standard type : complies with GB/T 10051 and ISO 2415, used for conventional lifting.

2.  Metallurgical hook

  • High temperature resistant type :

    • Material: 25Cr2MoV (temperature resistant 600℃).

    • Surface treatment: Heat resistant coating (such as Cerakote).

  • Application : lifting of ladles and molten metal.

3.  Marine engineering hook

  • Anti-corrosion type :

    • Material: 316 stainless steel or galvanized alloy steel.

    • Standard: DNVGL-OS-E402 (Det Norske Veritas).

4.  Explosion-proof hook

  • Certification : ATEX/IECEx (Explosive and Flammable Atmospheres).

    • Design: Non-sparking copper alloy or flameproof housing.

4. Special function hook

1.  Electric rotating hook

  • Features : Built-in motor drive, remote control rotation (such as port automation crane).

2.  Dynamometer hook

  • Integrated sensor : real-time load display (accuracy ±1%), overload alarm.

3.  Quick-change hook

  • Quick connector : The spreader can be changed without tools (e.g. for excavators).

5. Selection reference table

type Carrying range Advantages Typical brands
Forged single hook 0.5~50t Lightweight and high strength Crosby, Jiangsu Tongrun
Plate type double hook 50~500t Large tonnage economy RUD, Henan Weihua
Rotating anti-unhook 10~100t Anti-winding and anti-falling Gunnebo, Shanghai Zhenhua
Metallurgical high temperature resistant hook 20~200t Heat and shock resistance Baowu Group

6. Notes

  1. Mixing prohibited : Metallurgical hooks cannot be used in normal working conditions (risk of material brittleness).

  2. Periodic inspection : The hooks shall be inspected annually according to GB 6067.1.

  3. Matching sling : The hook size must be 1.5 times larger than the sling diameter (to prevent wear).

Through reasonable selection and standardized use, the performance of the hook can be maximized and safety can be guaranteed!

Pre: Safety hazards caused by corrosion of crane hooks
Next: Intelligent hook technology: improving the safety and efficiency of lifting operations

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