Crane Hook Block
Material:
42CrMo4 / 35CrMo / 16Mn / DG20 forged, or laminated Q345B steel plate
Lifting capacity:
0.5–500 t ·
Hook No. 6–250
Shell:
fully enclosed / semi-enclosed
Standards:
DIN 15401 / DIN 15402, GB/T 10051
As a leading crane hook block manufacturer and OEM supplier, Glory Rail provides 42CrMo4/65Mn heavy-duty forged lifting hook block and hook block assembly solutions for overhead and gantry crane applications worldwide.
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100% Response Rate | ISO9001 Certified | MTR Report Included
Crane Hook Block Parts
The reliability of a crane hook block assembly depends on every single component.
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
Glory Rail also offers spare parts for single-unit crane hook blocks, ensuring continuous and efficient operation of the equipment and simplifying routine maintenance. Searching for genuine Crane hook block spare parts or CAD drawings?
Crane Hook Types
Glory Rail manufactures a wide variety of hook types to meet different lifting capacities, duty classes, and application requirements. Each crane hook set is designed for a specific crane configuration, covering capacities from 3.2 metric tons to 400 metric tons.
Double/Ramshorn Hook
Designed for heavy-duty applications ranging from 50 to 400 metric tons. The double-hook (ram’s-horn) design distributes the load symmetrically across two support points, reducing stress concentration and enabling a higher safe working load. It is standard equipment in steel mills, foundries, and heavy machinery plants. The multi-pulley design (4–8 pulleys) provides the mechanical advantage required for extreme loads.
Single Hook
The most common type, suitable for light- to medium-duty lifting (3.2 metric tons–80 metric tons). The single hook features a simple C-shaped opening for easy hooking, making it an ideal choice for general manufacturing, warehouses, and construction sites. Available in both straight-shank and eye-type designs. Models with 1–4 sheaves cover most standard overhead crane applications.
By Sheave Configuration
Single-pulley hook assemblies (1:1 ratio) are used for light loads of less than 16 metric tons; multi-pulley blocks (2, 3, 4, 6, or 8 pulleys) are used for loads ranging from 20 to 400 metric tons, with wire rope ratios ranging from 2:1 to 8:1. The number of pulleys directly determines the mechanical advantage and lifting speed.
Special Application Types
Insulated hooks (for aluminum electrolysis plants); metallurgical/ladle hooks (with heat shields, for handling molten metal); 360° rotating hooks; explosion-proof hooks (for hazardous environments); laminated hooks compliant with DIN standards (for extremely heavy-duty applications). Custom hook assemblies are available through OEM orders.
Whether you need a crane hook block in stock or a complete custom crane hook block OEM project, our engineers will respond with drawings and a quote within 24 hours.
Crane Hook Block Drawing & Standard Dimension Chart
Below are the dimensions and wire rope matching reference data for our Heavy-Duty Hook Block series (covering rated loads from 3.2T to 400T). If you need specific crane hook block drawings, please contact our engineering team directly.
| Capacity ton |
Dimensions mm | Rope Diameter mm | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | E | G | D | D1 | L | L1 | L2 | d | c | ||
| 3.2t | 637 | 338 | 245 | 250 | 250 | 225 | 184 | / | / | 65 | 50 | 11 ~ 14 |
| 5t | 846 | 382 | 320 | 236 | 350 | 250 | / | / | / | 85 | 650 | 11 ~ 14 |
| 10t | 1110 | 370 | 420 | 240 | 350 | 250 | 93 | / | / | 120 | 90 | 11 ~ 14 |
| 16t | 1240 | 512 | 440 | 285 | 500 | 500 | 179 | / | / | 150 | 115 | 14 ~ 20 |
| 20t | 1440 | 516 | 520 | 335 | 500 | / | / | 134 | 94 | 170 | 130 | 16 ~ 20 |
| 32t | 1730 | 596 | 610 | 420 | 610 | / | / | 154 | 108 | 210 | 160 | 18 ~ 22 |
| 50t | 2085 | 724 | 720 | 510 | 710 | / | / | 161 | 108 | 270 | 205 | 20 ~ 22 |
| 75t | 2335 | 970 | 930 | 600 | 800 | 500 | 185 | 135 | / | 320 | 250 | 26 ~ 32 |
| 100t | 3130 | 1360 | 1100 | 955 | 1000 | 800 | 131 | 200 | 350 | 255 | 270 | 28 ~ 34 |
| 200t | 3548 | 1707 | 1090 | 1318 | 1000 | 900 | 173 | 280 | 395 | 295 | / | 30 ~ 38 |
| 320t | 4005 | 2004 | 1350 | 1235 | 1120 | 1000 | 160 | 316 | / | 370 | / | 40 ~ 46 |
| 400t | 4315 | 2338 | 1450 | 1270 | 1120 | 1000 | 160 | 316 | / | 420 | / | 40 ~ 46 |
| No. | P/N | Capacity | Dimensions mm | |||
|---|---|---|---|---|---|---|
| A | B | C | L | |||
| 1 | XZDG16 | 16t | 1913 | 537 | 830 | 179-179 |
| 2 | XZDG20 | 20t | 1846 | 451 | 830 | 134-94-134 |
| 3 | XZDG32 | 32t | 2100 | 755 | 820 | 140-140-140 |
| 4 | XZDG40 | 40t | 2471 | 850 | 814.5 | 161-108-161 |
| 5 | XZDG40S | 40t | 2185 | 650 | 814.5 | 250-200-250 |
| 6 | XZDG50 | 50t | 2471 | 850 | 814.5 | 161-108-161 |
| 7 | XZDG50S | 50t | 2260 | 690 | 814.5 | 161-108-161 |
| No. | P/N | Capacity | Dimension mm | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | E | G | D | L/L1 | H | M | d | d | |||
| 1 | XG005F | 5t | 650 | 327 | / | 340 | 193 | 202 | / | / | 63 | 80 |
| 2 | XG010F | 10t | 1000 | 458 | 295 | 300 | 243 | 310 | / | / | 90 | 112 |
| 3 | XG016 | 16t | 1200 | 279 | 390 | 380 | 200 | 87 | 960 | 480 | / | 140 |
| 4 | XG020 | 20t | 1290 | 300 | 400 | 430 | 200 | 100 | 960 | 480 | / | 160 |
| 5 | XG032 | 32t | 1560 | 365 | 460 | 520 | 250 | 120 | 1198 | 590 | 160 | 200 |
| 6 | XG003 | 32t | 1410 | 460 | 470 | 430 | 277.5 | 100/115 | / | / | 125 | 160 |
| 7 | XG050 | 50t | 1760 | 470 | 500 | 620 | 250 | 180 | 1198 | 590 | 200 | 250 |
| 8 | XG075 | 75t | 1783 | 518 | 555 | 600 | 285 | 120 | 1206 | 600 | / | 224 |
| 9 | XG125 | 125t | 1935 | 565 | 580 | 678 | 285 | 135 | 1200 | 600 | / | 250 |
| 10 | XG160 | 160t | 2050 | 722 | 630 | 691.5 | 285 | 130 | 1200 | 600 | / | 280 |
Can’t find a crane hook block size that matches your crane model? Our engineering team provides dimensioned crane hook block drawings (DWG/DXF/PDF) for every standard model and can design custom OEM crane hook blocks based on your existing crane interface—whether you need a direct replacement or a completely new design. For distributors looking to stock crane hook blocks wholesale, we also offer a complete product catalog and tiered pricing. All crane hook block spare parts are cross-referenced by model number for easy ordering.
Material and Strength Grade
All hooks in Glory Rail crane hook assemblies are forged from high-quality die-forged alloy steel and high-strength steel. Standard materials include: 20# steel (carbon steel for light loads under 20 metric tons), 16Mn (low-alloy high-strength steel), 35CrMo (chromium-molybdenum alloy steel for heavy loads over 32 metric tons), 42CrMo4 (European-grade high-toughness alloy steel), and DG20 (special forged-grade carbon steel; DG20Mn is also available upon request).
Material and Strength Grade Selection Chart
| Hook Standards | Hook Material Standards | Strength Grade M | Strength Grade P | Strength Grade S | Strength Grade T | Strength Grade V |
|---|---|---|---|---|---|---|
| DIN standard | EN 10025-3:2004 European structural steel standard – Part:3 Normalized/normalized rolled weldable fine grain structural steels EN 10083-3:2006 Steels for quenching and tempering – Part 3: Technical delivery conditions for alloy steels |
S275N | S355N S420N |
S420N S500N 34CrMo4 |
S500N 34CrMo4 34CrNiMo6 |
34CrMo4 34CrNiMo6 30CrNiMo8 |
| GB/T 10051.1 2010 | GB/T 714-2008 Structural steel for bridges JB/T 6396-2006 Technical conditions for large alloy structural steel forgings |
Q345qD1 | Q345qD1 Q420qD2 |
Q420qD2 35CrMo3 |
35CrMo3 34Cr2Ni2Mo4 |
35CrMo3 34Cr2Ni2Mo4 30Cr2Ni2Mo5 |
Hook material grade form—Glory Rail, just talk to us about your material needs and we can fully customize it to your specific demands of various lifting operations for both reliability and safety.
- 1,2-forging temperature:1200 ℃~800 ℃, normalizing and tempering, low alloy structural steels known for good weldability and toughness, commonly used in heavy-duty crane components.
- 3-forging temperature:1200 ℃~850 ℃, quenching and tempering, an alloy steel with high strength and toughness, suitable for making hooks that require high load-bearing capacity.
- 4,5-forging temperature:1200 ℃~850 ℃, quenching and tempering, alloy steels with excellent harden ability and fatigue resistance, ideal for demanding lifting applications.
Why Choose Glory Rail Crane Hook Blocks
Premium Materials
Drop-forged alloy steel / high-tensile steel: #20 steel, 16Mn, 35CrMo, 42CrMo4, DG20. Pulleys: Q345B steel plate with precision-machined rope grooves. Includes EN 10204 3.1 material certificate.
Heat Treatment Process
Quenching and tempering (Q&T) to achieve optimal hardness (HB 220–280) and toughness. Surface hardening, normalizing, and stress-relief annealing are available upon request.
100% Quality Tested
100% (NDT) per piece: UT for internal defects + Magnetic Particle Testing (MT) for surface cracks. Load test at 2x WLL with certificate. Fatigue testing available.
Full Specification Coverage
12 standard models ranging from 3.2 metric tons to 400 metric tons. Single-hook (medium to light duty, models 1–8) and double-hook/horn-type hooks (heavy duty, models 9–12). 1–8 pulley configurations. See the crane hook block drawing for dimensions.
Custom OEM Service
We provide custom forged crane hook blocks to specifications: special capacities exceeding 400 metric tons, custom hook shank sizes, anti-corrosion coatings, and insulated, metallurgical, rotating, and laminated hooks. We also offer branded packaging for OEM partners.
Spare Parts Support
Complete inventory of crane hook block spare parts: safety latches, thrust bearings, pulleys, hook nuts, pins, and crossbeams. We offer fast global shipping to meet maintenance and replacement needs.
FAQ
Our standard crane hook blocks are designed in accordance with DIN 15401 and GB/T 10051, with a minimum safety factor of 4:1 (breaking load/rated working load). For heavy-duty applications (M7–M8 service classes), a safety factor of 5:1 is recommended. Each product undergoes a verification test at twice the rated load before leaving the factory.
The hooks are forged from die-forged alloy steel and high-strength steel, including 20# steel, 16Mn, 35CrMo, 42CrMo4, and DG20. The pulleys are manufactured from Q345B steel plate. After forging, the hooks undergo quenching and tempering (Q&T) to achieve optimal strength and toughness. All hooks undergo 100% non-destructive testing (NDT), including UT and (MT.
Yes. All Glory Rail crane hook blocks with safety latches come standard with heavy-duty spring-loaded safety latches to prevent the load from accidentally coming off the hook. Replacement latch assemblies are available as crane hook block spare parts and can be ordered separately.
Of course. Glory Rail offer comprehensive OEM services for custom crane hook blocks, including special load capacities (over 400 metric tons), custom hook shank sizes, corrosion-resistant galvanized or epoxy coatings, insulated hooks, metallurgical hooks with heat shields, swivel hooks, laminated hooks, and private-label packaging. Please send us your drawings, samples, or crane model specifications, and our engineering team will develop a design solution. Lead times for custom orders are typically 25–35 days.
Our crane hook assemblies comply with ISO 9001:2015 Quality Management, the CE Machinery Directive 2006/42/EC, DIN 15401, GB/T 10051-2010, and ASME B30.10. We can also meet other standards, such as BS EN 13155, upon request. Each product is accompanied by: a manufacturer’s declaration of conformity, a verified load test report (2x WLL), a material test report (MTR/EN 10204 3.1), and a non-destructive testing report (UT/MT). Third-party inspections (SGS, TÜV, BV) can be arranged.
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