DCPZ Series Electromagnetic Disc Brakes DCPZ12.7-400-L

DCPZ Series electromagnetic disc brakes DCPZ12.7-400-L

The DCPZ12.7-400-L is a high-performance medium-to-heavy duty electromagnetic disc brake belonging to the DCPZ series (DCPZ = DC Electromagnetic Caliper Disc Brake), engineered for reliable deceleration, emergency stopping, and static load holding of DC-driven rotating machinery. Classified as a fail-safe, spring-engaged, DC electromagnetic released normally closed brake, it features a single-caliper design, high braking stability, and left-mounted configuration-optimized for DC-powered industrial scenarios requiring precise control and harsh-environment adaptability. The model designation (DCPZ12.7-400-L) clarifies its core parameters: "DCPZ" for DC Electromagnetic Disc Brake series, "12.7" for nominal braking torque (12.7 kN·m), "400" for compatible brake disc diameter (400 mm), and "L" for left-mounted installation. Widely used in DC-driven lifting, conveying, metallurgical, and port machinery, it ensures safe operation under loads of 300–1000 tons and working conditions (dust, moderate temperature fluctuations, and high-frequency start-stop cycles).

Working Principle

This brake is mainly composed of a brake frame and an electromagnet, and its working process is divided into two states: brake release and braking, with a manual emergency release function as a supplement:

Brake Release: When the electromagnet is connected to the specified power supply (usually AC 380V, 50Hz; customized voltage can also be provided), the electromagnet generates an electromagnetic force instantly. This force compresses the internal spring and pulls the electromagnet in. Then, under the drive of the pull rod connected to the electromagnet, the left and right brake arms drive the friction blocks to open quickly. At this time, a certain gap is maintained between the brake blocks and the brake disc, which will not produce friction resistance, and the mechanical equipment can operate normally.

Braking Implementation: Once the power is cut off due to equipment shutdown, power failure or system failure, the electromagnetic force of the electromagnet disappears immediately. The compressed spring rebounds rapidly and pushes the left and right brake arms. Then the brake arms drive the friction blocks to close and clamp the brake disc tightly. The friction force generated between the friction blocks and the brake disc decelerates or stops the rotation of the brake disc, thus realizing the braking of the connected mechanical transmission mechanism and preventing the equipment from sliding or colliding due to inertia.

Manual Emergency Release: The brake is also equipped with a manual release mechanism. When the equipment has an unexpected power outage or needs urgent manual intervention during debugging and maintenance, technicians can manually release the brake, which ensures the flexibility and safety of equipment maintenance and troubleshooting.

Applications

The DCPZ12.7 - 400 - L is suitable for medium and low - torque transmission mechanisms. It is not only used for deceleration and parking of general industrial equipment but also widely used as a tension - control brake in winding machinery. The specific application scenarios are as follows:

General Industrial Equipment Braking: It is widely used in the deceleration and parking braking of fixed operating mechanisms in fields such as lifting, transportation, metallurgy, mining, ports, and construction. For example, it can be matched with conveyors, material handling equipment, and small and medium - sized cranes to ensure that the equipment can stop stably and reliably when it needs to pause during operation.

Papermaking Industry: In the paper - making and newspaper printing processes, this brake is used to control the tension of the paper web. It can adjust the braking force in real - time according to the operating speed of the paper. This ensures that the paper maintains a stable tension during winding and transmission, avoiding problems such as paper tearing due to excessive tension or uneven paper rolls due to insufficient tension.

Steel Processing Industry: When uncoiling steel plates or steel wires, the DCPZ12.7 - 400 - L can control the uncoiling speed by adjusting the braking force. It ensures that the steel materials maintain an appropriate tension during the uncoiling process, preventing wrinkles, deformation, or irregular uncoiling, which provides guarantee for the subsequent cutting, stamping, and other processing procedures.

Wire and Cable Industry: During the production and laying of wires and cables, the brake is used to control the tension when the cable is unwound and reeled. It can avoid damage to the cable structure caused by excessive stretching or chaotic winding caused by uncontrollable tension, ensuring the quality of cable production and the smooth progress of laying operations.

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