The Multi-Plate Friction Torque Limiter is a composite, slip-type overload protection component specifically developed for medium-to-high torque, heavy-duty operating conditions. Unlike conventional single-plate or standard multi-plate friction limiters, our design employs a multi-layered, stacked friction disc structure. This configuration maximizes the effective friction surface area within an extremely compact installation footprint, enabling it to handle substantial torque loads reaching thousands of Newton-meters.
In addition to offering a wide range of fine-tunable torque settings and suitability for continuous medium-to-high speed operation, the unit features asbestos-free dry friction plates. These plates inherently possess rust-proof, wear-resistant, and explosion-proof properties, allowing the device to be deployed directly into hazardous and complex operating environments without requiring any additional modifications.
Furthermore, the unit can be paired with flexible couplings to compensate for various alignment deviations arising during equipment installation. This makes it ideally suited for high-load industrial applications—such as mining operations and large-scale conveyor systems—serving as an indispensable flexible safety protection component within heavy-duty transmission systems.
The friction discs are asbestos-free, rust-proof dry-type friction elements, suitable for explosion-proof applications with excellent wear resistance and long service life.
Multi-disc Torque Limiter
Used in any application requiring slip protection against overload (excessive torque), preventing equipment damage and avoiding downtime losses.
- Industrial facilities / Power plant exhaust control (Siemens, GE)
- Assembly lines (Niles-Simmons)
- Coal mining machinery industry (ThyssenKrupp, Grabe)
- Wind power generation (Samsung, Siemens, Bard, GE)
Combination of Multi-disc Torque Limiter and Jaw (Spider) Flexible Coupling (1)
Combination of Multi-disc Torque Limiter and Jaw (Spider) Flexible Coupling (2)
Combination of Multi-disc Torque Limiter and Jaw (Spider) Flexible Coupling (3)
Combination of Multi-disc Torque Limiter and All-Steel Gear Coupling (4)
Used for driving a 525 kW conveyor, installed between the motor and the gearbox.
Used for driving an 800 kW conveyor, installed between the motor and the gearbox.
Used for driving 1000 kW–1200 kW conveyors, installed between the motor and the gearbox.
The Multi-Plate Friction Torque Limiter demonstrates exceptional adaptability across parameters, connection methods, rotational speeds, and general compatibility. It is capable of meeting the installation and operational requirements of the vast majority of heavy-duty equipment, supporting both standardized selection options and personalized, non-standard customizations.
- Torque Load Range: Standard models cover the medium-to-high torque spectrum, primarily targeting heavy-duty equipment applications. For specialized, ultra-high-load scenarios, we offer bespoke customization services based on the client's actual torque parameters and equipment load curves, ensuring comprehensive compatibility with all types of heavy-duty operational environments.
- Shaft-End Connection Methods: Compatible with the two most prevalent assembly schemes on the market: it can utilize a standard keyed bore connection—suitable for conventional transmission shafts—or be paired with a keyless locking assembly (expansion bushing) to achieve a keyless connection, which is ideal for high-precision, zero-backlash transmission equipment and accommodates a wide range of shaft diameters.
- Rotational Speed Adaptability: Standard models are capable of directly meeting the continuous, uninterrupted operational demands of medium-to-high-speed equipment. Should the equipment's rated speed exceed the standard model's upper limit, we can specifically optimize the friction materials and internal spring structure to create a customized high-speed solution, effectively resolving the challenges associated with overload protection in high-speed applications.
- Installation Misalignment Compensation: The product can be integrated with various types of flexible couplings to effectively absorb and compensate for axial offsets, radial deviations, and angular misalignments that occur during the assembly process. This reduces the strict requirements for coaxiality during equipment assembly and helps minimize installation and commissioning costs.
Compared to traditional detent-type and standard single-plate friction torque limiters, the Multi-Plate Friction Torque Limiter demonstrates outstanding advantages across three key dimensions: load-bearing capacity, adjustment precision, and environmental resilience. It is specifically designed to address critical industry pain points associated with heavy-duty equipment—such as the difficulty of overload protection, susceptibility to wear and tear, and operational limitations imposed by harsh working conditions.
Utilizing a multi-layer stacked friction disc structure, the unit significantly increases the overall friction contact area. Without increasing the product's external dimensions or requiring additional installation space, it can reliably transmit massive torque loads—reaching levels of several thousand Newton-meters (N·m). This makes it ideally suited for heavy industrial machinery, such as large-scale conveyor systems and mining equipment, effectively resolving the challenge of limited installation space often encountered with heavy-duty machinery.
Operators can fine-tune the slip torque across a wide range simply by adjusting the internal spring preload pressure. The set parameters exhibit high repeatability and extremely low error margins, ensuring efficient and stable power transmission under normal operating loads. In the event of a sudden overload, the friction surfaces instantly slip to dissipate the force, providing immediate protection at the critical overload threshold while simultaneously balancing transmission efficiency with equipment safety.
The unit comes standard with industrial-grade, asbestos-free dry friction discs. By eschewing traditional, inferior friction materials, the disc surfaces feature inherent rust-proof and wear-resistant properties, resulting in a service life far exceeding that of standard friction components. The product's overall structure has been optimized for demanding operational environments; requiring no additional sealing accessories or structural modifications, it can be directly deployed in special work zones characterized by heavy dust accumulation, oil contamination, or strict explosion-proof requirements.
- Q1: What is the fundamental difference between the Multi-Plate Friction Torque Limiter and a standard friction-type torque limiter?
A1: Standard friction-type limiters typically employ a single-plate structure, making them suitable only for light-to-medium loads and small-to-mid-sized equipment. In contrast, the multi-plate heavy-duty model utilizes a stacked multi-layer friction structure, resulting in significantly higher torque density. At an equivalent physical volume, its load-bearing capacity is increased several-fold—capable of withstanding massive torque loads reaching thousands of N·m—and is specifically engineered for heavy-duty applications such as mining machinery and large-scale conveyor systems.
- Q2: Can this unit compensate for installation misalignments? Is it necessary to purchase a separate coupling as well?
A2: The product itself does not feature an inherent self-centering compensation function; therefore, it must be paired with a flexible coupling for collaborative operation. When installed in combination, this setup effectively compensates for three types of installation errors—axial, radial, and angular—thereby simplifying the assembly process. It is ideally suited for large-scale, heavy-duty machinery where precise control over shaft coaxiality is difficult to achieve.
- Q3: Is it necessary to modify the sealing structure for use in hazardous (explosion-proof) environments?
A3: No secondary modification is required. The unit comes factory-equipped with asbestos-free dry friction linings, the material properties of which fully comply with the stringent requirements of explosion-proof operating conditions. Consequently, the unit's standard factory configuration can be deployed directly in harsh industrial environments—including those characterized by dust, flammable/explosive hazards, oil contamination, or high humidity—thereby saving both the cost and time typically associated with structural retrofitting.
- Q4: Do you offer customization for torque specifications? Can units be manufactured based on specific equipment drawings?
A4: Yes, customization is fully supported. In addition to our standard torque specifications, our technical team can design and engineer specialized, high-torque models tailored precisely to a client's specific equipment requirements—taking into account factors such as rated torque, peak load capacity, and maximum rotational speed. Furthermore, we offer personalized machining services to accommodate non-standard shaft diameters and unique connection structures.
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