Single Crane Hook Blocks Product Introduction
Manufactured from high-grade steel, these high-strength single crane hook blocks fully comply with FEM and DIN industrial standards. Internally, the units are equipped with 2 to 6 high-strength cast iron or nylon sheaves, paired with sealed, maintenance-free rolling bearings; this configuration significantly reduces wire rope wear while ensuring rotational flexibility and high transmission efficiency. To guarantee operational safety, the hook body undergoes rigorous Non Destructive Testing (NDT)—specifically magnetic particle and ultrasonic testing, in full compliance with ISO/ASME certifications. Furthermore, the units feature safety latches to prevent rope dislodgment, real-time load monitoring capabilities, and anti-loosening connection structures. Combined with a precision-machined throat profile, these features ensure superior load distribution and seamless compatibility with various lifting accessories, making this product a core solution for crane system design that offers an optimal balance of safety, durability, and cost-effectiveness. These single crane hook blocks are ideally suited for lifting applications where the load does not exceed 75 tons, offering a solution that is both simple and easy to use.
Single Crane Hook Blocks Advantage
Robust Materials: Our single crane hook blocks are crafted from high-ductility DG20Mn manganese steel. Utilizing a precision forging process, we eliminate internal voids at the microscopic level. Coupled with a rigorous heat treatment regimen, the hook body achieves exceptional load-bearing capacity alongside superior impact toughness, enabling it to withstand sudden loads even under extreme operating conditions.
Scientific Obstacle Avoidance & Stress Optimization: Featuring a streamlined hook profile, the design employs optimized geometric structures to effectively disperse stress and minimize stress concentration points. Before shipment, every single crane hook block undergoes comprehensive non-destructive testing to ensure structural integrity and freedom from cracks, thereby eliminating potential safety hazards at the source.
Efficient & Smooth Pulley System: Each unit incorporates a durable pulley assembly equipped with precision-machined, smooth rope grooves that minimize friction and wear on the steel wire rope. Combined with a fully sealed bearing design, the system ensures flexible rotation and precise alignment while significantly extending maintenance intervals and the overall service life of the unit.
Lightweight Design & Secure Connection: The connection points of the hook blocks utilize a high-strength pre-tensioned bolt structure, effectively preventing loosening risks caused by high-frequency vibrations. The entire assembly adheres to a lightweight design philosophy; by significantly reducing its own weight without compromising structural strength, it optimizes the effective payload distribution of the crane.
Highly Flexible Customization: We offer modular customization services, allowing for flexible adjustments—ranging from hook dimensions to pulley components—to align perfectly with your existing equipment and ensure seamless integration with various crane systems.
Cost-Effective Operational Solution: Characterized by a minimalist design, ease of installation, and low maintenance requirements, this series of single crane hook blocks delivers industrial-grade performance while offering an exceptionally competitive return on investment. It stands as the ideal choice for light-to-medium load lifting operations.
Single Crane Hook Blocks Technical Parameter

1/2–Side plate; 3–guide rope plate; 4–gear shaft; 5–pulley shaft; 6–shaft ring; 7/14–washer; 8–flower nut; 9–pulley; 10/27–bolt; 11–sleeve; 12–hook; 13–hook beam;14–washer; 15–large nut; 16–cover plate; 17–lock plate; 18–card plate; 19–spring; 20–lock shaft; 21–sleeve; 22–sign; 23–pressure bearing; 24–ball bearing; 25–hub; 26–grease hole; 28/29–spring washer; 30/31–cotter pin; 32/33/34–pulley guide plate

| Specifications | Reference size (mm) | Installing wire rope | Weight (kg) | ||||||||||||
| A | B | H | E | G | L | L1 | L2 | C | U | D1 | D | Diameter (mm) | Number of branches | ||
| 3.2T | 575 | 341 | 426 | / | / | 220 | / | / | 50 | 65 | / | 300 | 11-14 | 4 | 80 |
| 5T | 715 | 341 | 426 | / | / | 240 | / | / | 65 | 85 | / | 350 | 11-14 | 4 | 100 |
| 10T | 1080 | 370 | 526 | 410 | 243 | / | 92 | / | 90 | 120 | 380 | 250 | 11-14 | 6 | 200 |
| 16T | 1330 | 500 | 660 | 485 | 307 | / | 172 | / | 115 | 150 | 500 | 310 | 14-20 | 6 | 330 |
| 20T | 1415 | 515 | 653 | 510 | 333 | 136 | 93 | / | 130 | 170 | / | 500 | 16-20 | 8 | 460 |
| 32T | 1740 | 620 | 780 | 620 | 420 | 155 | 105 | / | 160 | 210 | / | 610 | 18-22 | 8 | 845 |
| 50T | 1965 | 830 | 815 | 710 | 510 | 170 | 109 | / | 205 | 270 | 710 | 610 | 20-22 | 10 | 1300 |
| 75T | 2335 | 970 | 1012 | 930 | 600 | 185 | 135 | / | 250 | 320 | 800 | 500 | 26-32 | 10 | 2500 |
| 100T | 3130 | 1360 | 1162 | 1100 | 955 | 350 | 131 | 200 | 270 | 355 | 1000 | 800 | 28-34 | 12 | 4200 |
| 200T | 3548 | 1617 | 1090 | 1185 | 1298 | 159 | 264 | / | / | 340 | 1100 | 900 | 30-38 | 16 | 9100 |
Single Crane Hook Blocks Applications

Single Crane Hook Blocks for Overhead Cranes

Single Crane Hook Blocks for Gantry Crane

Single Crane Hook Block for Explosion Proof Overhead Crane
Single Crane Hook Blocks Structural Configurations

Semi-enclosed Crane Hook Blocks
- Maintenance and cleaning are more convenient, as the internal components of the hook block are more easily accessible for inspection and servicing.
- Suitable for lifting operations under general working conditions.

Fully Enclosed Crane Hook Blocks
- It offers excellent protective performance, effectively blocking debris, dust, and other contaminants to minimize corrosion and surface damage to single crane hook blocks, thereby extending their service life.
- Suitable for use in chemical processing environments and settings with high dust levels.





