KBK Rigid Crane
KBK steel cranes are a practical choice for medium-to-small loads and multi-scenario material handling thanks to the reliability of their steel structure, flexible layout capabilities, and stable performance, providing powerful support for efficient transportation in industrial production.
The advantages lie in durability and adaptability. Steel structures are highly resistant to wear and deformation, capable of withstanding certain harsh environments, and have a long service life. Installation does not require complex pre-embedded foundations, allowing flexible suspension from roofs or supports. When adjusting the layout according to production needs in the future, modifications are convenient and costs are controllable, enabling seamless integration with production lines, robots, and other equipment to form an efficient material handling system.
In terms of safety and maintenance, the system is equipped with safety devices such as overload protection and limit switches, complying with relevant safety standards. Steel components have a high degree of standardization, making replacement of wear-prone parts convenient. Routine maintenance primarily involves inspecting the tightness of connection components and lubricating parts, resulting in relatively low maintenance costs.
Description
KBK steel cranes are lightweight material handling equipment with high-strength steel components at their core. With their reliable structure and strong adaptability, they are widely used in industrial production for medium and small load transfer scenarios.
From a structural perspective, its core components include steel tracks, running trolleys, electric hoists, and suspension devices. Steel tracks are typically made of cold-rolled steel or welded steel, primarily using high-strength steel grades such as Q235 and Q345, which offer excellent rigidity and load-bearing capacity. The tracks can be flexibly assembled using standardized connectors to form various layouts such as straight lines, loops, and curves, with spans ranging from 2 to 10 meters. They can be customized to suit the layout of workshops or warehouses and specific operational requirements. The suspension system securely anchors the tracks to roof steel structures, concrete beams, or independent supports. Installation does not require complex pre-embedded foundations, making it highly adaptable to various site conditions.
In terms of performance, the KBK steel crane has a standard lifting capacity of 0.125-5 tons, with custom models available to accommodate larger tonnage requirements. It is capable of handling various materials such as electronic components, automotive parts, and small machinery. The hoisting mechanism is typically equipped with an electric hoist, with a hoisting speed of 3-16 m/min. The travel trolley moves along the track at a speed of 10-30 m/min, offering high positioning accuracy for precise material handling and placement. Its duty cycle is typically rated at A1-A3, suitable for low to medium-frequency operations with daily working hours ≤8 hours. The stability of the steel structure ensures slow performance degradation over extended use, enabling reliable performance for daily material handling tasks.
The significant advantage of cranes lies in the balance between durability and flexibility. Steel tracks and components exhibit strong resistance to wear and deformation, enabling them to withstand harsh environments such as dust and minor vibrations, resulting in a longer service life. Additionally, the modular design facilitates easy retrofitting and expansion. For instance, adjusting the operational range only requires adding or removing track modules, with modification costs significantly lower than those of traditional cranes. Furthermore, it can seamlessly integrate with production lines, robot workstations, and other equipment to establish an automated material handling system, effectively enhancing overall operational efficiency.
In terms of safety, KBK steel cranes are equipped with safety components such as overload protection devices, lifting height limiters, and trolley travel limiters as standard, complying with EN 13000 and relevant domestic safety standards to provide reliable protection during operation. Daily maintenance is also relatively simple, mainly involving checking the tightness of connecting parts and the lubrication of tracks, resulting in low maintenance costs.
Features
1. High-strength track design: The tracks are made of high-strength steel such as Q235 and Q345, formed through cold rolling or welding processes, with cross-sections in the shape of channels or I-beams. Compared to ordinary structural steel, their bending strength is increased by over 30%. Within a span of 2–10 meters, the deflection under rated load is ≤L/200, ensuring smooth operation. For example, 5-ton-class tracks have a thickness of 8-12 mm, capable of withstanding long-term, high-frequency load impacts.
2. Modular assembly system: Core components such as tracks, trolleys, and connectors are standardized steel modules that can be quickly connected using bolts and clips, eliminating the need for on-site welding. A single system weighing less than 5 tons can be installed in just 1-2 days, and the track length can be flexibly extended or the layout changed (e.g., from straight to circular) as needed. The assembly accuracy is ±2 mm, ensuring smooth trolley operation.
3. Sturdy suspension structure: The suspension device uses forged steel or high-strength bolts and can be directly fixed to concrete beams, steel structure roofs, or independent brackets, with a single-point suspension load capacity of 1-3 tons. The suspension spacing can be adjusted according to the track span (usually 3-5 meters per point) to ensure that the track does not sag significantly and is suitable for different factory structures.
4. Light-load high-efficiency operation: Lifting capacity ranges from 0.125 to 5 tons (standard models), with custom models capable of handling larger tonnages. Lifting speed: 3–16 m/min (electric hoist drive), travel speed of the running trolley: 10–30 m/min, positioning accuracy: ±5 mm. Ideal for the “point-to-point” transportation of delicate materials such as electronic components and precision parts, avoiding the power waste associated with traditional cranes.
5. Low-consumption, durable design: Steel components are zinc-plated or painted to prevent rusting for at least 10 years and can withstand workshop dust, light oil stains, and other environmental conditions. The motor uses an S3-40% duty cycle, suitable for low to medium frequency operations (average daily use ≤ 8 hours), with a temperature rise of ≤ 70K during continuous operation to ensure long-term stable operation.
6. Work level compatibility: Mostly A1-A3 level, specially designed for intermittent handling, such as loading and unloading on production lines and short-distance transportation in warehouses. Its structure has reasonable redundancy and can achieve more than 100,000 lifting cycles under rated load, with a failure rate of less than 0.5 times per thousand hours.
7. Highly compatible with any site: No need for pre-embedded tracks or fixed foundations. Tracks can be hung along walls or roofs, or installed on the ground. The minimum working space width required is only the track span + 1.5m, making it suitable for narrow workshops and old factory renovations. For example, a 2m span KBK steel crane can be installed next to a 3m wide assembly line to achieve lateral material transfer.
8. Flexible system integration: Can be linked with conveyor belts, robotic arms, AGVs, and other equipment to build an automated material flow system. For example, in an automotive parts workshop, circular KBK tracks can be used in conjunction with robotic grippers to achieve unmanned transfer of workpieces between multiple workstations, thereby improving production speed.
9. Controllable renovation costs: When expanding or adjusting the track layout in the future, only the number of modules needs to be increased or decreased, and the renovation costs are 30%-50% of those of traditional cranes. For example, when expanding a straight track to a U-shaped layout, the cost of the new track and connecting parts is approximately 20% of the original system, and does not affect the strength of the original structure.
10. Multiple safety protections: Standard overload limiter (accuracy ±5%), lifting height limit switch (mechanical + electronic dual protection), trolley travel limit switch, some models equipped with emergency stop button and leakage protection, compliant with EN 13000 and GB/T 3811 standards, preventing safety accidents caused by overload or overtravel.
11. Convenient and economical maintenance: Steel components are highly versatile, and wear parts (such as small wheels and motor carbon brushes) can be quickly replaced without customization. Daily maintenance only requires monthly checks of track connection tightness and quarterly lubricant replenishment. Annual maintenance costs are less than 20% of those of traditional cranes, making them suitable for low-cost management by small and medium-sized enterprises.
Technical Data
| Capacity | 1t | 2t | 3.5t | 5t |
|---|---|---|---|---|
| Span | 2-6m | 2-7m | 3-8m | 3-10m |
| Lifting height | 2-6m | 2-7m | 3-8m | 3-10m |
| Work Duty | A2-A3 | A3 | ||
| Lifting speed | 8-16m | 6-12m | 5-10m | 4-8m |
| Hoist Traveling Speed | 15-30m | 15-25m | 10-20m | |
| Rail | Grooved steel track | |||
Purchasing Process
FAQs About Choosing the Right Gantry Crane and Supplier
In order to obtain accurate quotes for custom overhead cranes, providing the following core information will greatly improve efficiency：
1. Key specifications: including rated lifting weight (tons), span (i.e., track spacing, meters), and lifting height (meters), which is the basis of the design.
2. Use environment and working conditions: Explain the conditions of the installation site (such as indoor/outdoor, temperature, humidity) and work level (busy level), which determines the material selection and configuration level of the structure.
3. Specific configuration requirements: clarify the drive mode (such as frequency conversion control), brand preferences for electrical components, safety devices (such as overload limiters, anti-collision systems), and whether special functions such as remote control are required.
4. Installation and service: confirm the on-site power supply conditions (voltage, frequency), installation conditions, and specific expectations for delivery time, installation and commissioning, and after-sales service.
The more detailed the information provided, the more accurate and reliable the solutions and quotations obtained.
1. Span and lifting capacity: this is the foundation.The larger the span and the higher the rated lifting weight, the material and design costs of the main beam and structure will increase significantly, and the higher the price.
2. Working level and frequency of use: The working level (A1-A8) represents the busy level and load status of the crane.Cranes with frequent and heavy-duty use require more durable motors, gearboxes and structural parts, and the cost is naturally higher than that of lightweight and occasionally used equipment.
3. Structure and configuration: The double beam is more complex and stable than the single beam structure, and the price is higher.At the same time, the lifting height, operating speed, motor brand, control system (ordinary vs frequency conversion), and the level of safety devices (such as anti-swing, load monitoring) all directly affect the final quotation.
4. Degree of customization and brand service: completely standard models have lower costs.The customized design based on the workshop environment (such as explosion-proof and high temperature), special processes (such as metallurgical special), brand added value, and after-sales guarantee system will all be reflected in the price.
In simple terms, when buying a bridge crane, it is necessary to consider “how much, how frequently, what environment and what configuration”, which determine its core value and price.
Which crane to choose mainly depends on your specific needs. You can quickly judge from the following four core aspects：
-Single-beam bridge crane: it is suitable for conventional workshops with light and medium loads (usually ≤20 tons), medium span, and low frequency of use. It is the most economical and versatile choice.
-Double-girder bridge crane: used for heavy-duty, long-span, or high-work-level occasions (such as frequent hoisting, metallurgy, heavy-duty assembly). Its stability, durability, and safety are higher, but the cost is also increased accordingly.
-Free vertical crane (cantilever/column type): suitable for fixed working points and working conditions with limited rotation range, such as beside machine tools, maintenance areas, or production line stations, it can efficiently use corner space and be installed flexibly.
-Grab crane: It is specially used for the handling, loading, and unloading of bulk materials (such as grain, coal, sand, and gravel). The only reason to choose it is that you need to deal with such unpackaged loose materials.
In simple terms, you can filter according to this logic：
First, according to the lifting weight and span, choose between a single beam and a double beam.
If the scope of operation is highly concentrated and the space is limited, consider a free vertical.
If the handling object is bulk material, it points directly to the grab type.
Delivery times largely depend on whether the crane is standard or customized. Based on our experience, standard single-girder and double-girder cranes can be produced more quickly, while cranes with special spans, duty ratings, or environmental requirements naturally require additional engineering design time.
For each quotation, we provide an estimated production and delivery schedule based on your configuration and destination. Throughout the manufacturing process, our team maintains communication with the customer to ensure no unexpected issues arise before shipment.
Compared with many suppliers, Yangyumech mainly reflects the two differentiated advantages of high customization flexibility and clear international compliance when providing bridge cranes.
On the one hand, we focus on in-depth customized services. According to your specific needs, we can provide fully customized solutions on core parameters such as rated load capacity, span, and lifting height, and accept personalized requirements. This means that what you get is not a standard product, but exclusive equipment that accurately matches the working conditions of your workshop.
On the other hand, we attach importance to international standards and quality certification. Our products clearly meet the requirements of international certifications such as CE, which ensures that their safety and reliability can meet the mainstream standards of the international market, and provides you with additional quality confidence guarantees. Combined with our direct supply capabilities as a powerful factory, we can achieve better comprehensive value for you while obtaining compliant and customized products.
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