Products

Robot Brake
Robot joint module brake | Precise and controllable safety movement core
Instant response and safety retention
| Ensure accurate positioning and safe operation of robots
Products Description
As a manufacturer with core technology in the field of integrated manufacturing of precision safety brake systems, we focus on the comprehensive precision manufacturing of brakes (servo motor brakes, safety brake modules), the key safety execution components of robot joint modules. We offer integrated processing and integration solutions from electromagnetic components, friction pairs to housing structures, covering various types such as power loss braking, normally open braking, and redundant safety braking. We deeply understand its core role in motion control safety, precise position holding, emergency stop and energy management, as well as the extreme requirements for response time, braking torque accuracy, service life, environmental adaptability and functional safety, and are committed to achieving excellent braking performance, extraordinary safety and reliability and long maintenance-free life through multidisciplinary integrated manufacturing and precision assembly technology.
Core Advantages
1. Integrated manufacturing of electromagnetic-mechanical precision coupling system
① High-precision magnetic circuit system integrated processing
Special soft magnetic materials (such as electrical pure iron DT4C, mild steel) are used for precision machining of magnetic yokes, armatures and magnetic conductivity
ring, to ensure that the magnetic circuit air gap control accuracy is ≤ 0.03mm, the flatness of the magnetic conductive surface ≤ 0.005mm, and the magnetic flux density uniformity is ≥ 95%, achieving efficient electromagnetic conversion and fast response (release/suction time ≤ 10ms).
② Precision forming and surface treatment of friction sub-components
High-precision flat surface grinding (flatness ≤ 0.005mm, parallelism ≤0.008mm) is carried out on the brake disc/plate, and special wear-resistant anti-friction coatings (such as sintered copper-based, modified phenolic resin-based) are applied, and the friction coefficient is stable at 0.35-0.45 (dry type) or 0.08-0.12 (wet type) to ensure that the braking torque accuracy is ± 5%.
③ The spring pressure system is precisely regulated and manufactured
Produce disc springs or coil springs using high fatigue strength spring wires (such as 60Si2MnA), and achieve pressure dispersion through precise heat treatment and pressure grouping ≤3% to ensure the consistency of braking torque between batches.
2. Safety redundancy and reliability enhancement design and manufacturing
① Dual-channel redundant braking system integrated manufacturing
Precision manufacturing of independent humbuckers, double armatures and pressure equalization mechanisms to achieve dual redundancy of electromagnetic and mechanical. In the event of a single circuit failure, the backup channel can provide a customized torque not lower than the rated torque 70% safe braking, which meets the requirements of functional safety level above SIL2/PLd.
② Automatic wear compensation and clearance monitoring structure
Integrated manufacturing wear compensation gasket automatic adjustment mechanism or gap sensor mounting interface to monitor friction plate wear in real time to ensure stable braking torque and response time throughout the life cycle.
③ Fail-safe structure implementation
Through the precise cooperation of the principle of losing power braking and the mechanical self-locking structure, it ensures that the brake can automatically and reliably engage in abnormal situations such as power failure and control failure to achieve zero speed maintenance.
3. Dynamic thermal management and vibration and noise control
① Efficient heat dissipation and thermal isolation structure manufacturing
Design and manufacture heat insulation gaskets or heat dissipation channels between the magnetic yoke and the friction pair, use thermal adhesive to fill the air gap, and process the brake disc with internal ventilation grooves or heat dissipation fins to control the continuous braking temperature rise $\Delta { \sf T } { \le } 8 0 ^ { \circ } { \sf C }$ Within.
② Vibration reduction and noise reduction and smooth engagement control
Micro texture optimization of the armature joint surface (laser micro-pit or precision grinding), and the integration of micro dampers in the spring assembly effectively reduce the impact noise and chatter during brake engagement, and the noise level is ≤ 65dB(A).
4. Integration of full-function testing and safety certification
① Comprehensive test bench verification of braking performance
Equipped with a professional test bench, it can perform static braking torque, dynamic braking response time, minimum holding voltage, insulation resistance, durability ( |>100 10,000 cycles) and generate a uniqueness test report.
② Environmental adaptability simulation test
Support for high and low temperature cycling ( (−40∘C∼+125∘C) ), humidity heat, vibration, salt spray and other environmental reliability tests to ensure that the brakes meet all kinds of severe working conditions.
③ Conformity certification support
Manufacturing processes and product performance support compliance with international safety and electromagnetic compatibility standards such as IEC 61800-5-2, ISO 13849, UL/CE, etc.
Technical Parameters
| Brake Type | Working Principle & Integration Features | Core Components & Materials | Core Manufacturing Challenges |
|
Servo Motor Power-Off Brake (Spring-Applied Type) |
Integrated at the rear end of the servo motor; brakes when power is off, releases when power is on. Compact structure with fast response. | Magnet yoke/armature (pure electrical iron), friction disc (asbestos-free), spring (60Si2MnA) | High torque density in a miniaturized space, balance between fast response and low heat generation, long service life. |
| Normally-Open Electromagnetic Brake | Brakes when energized, used in applications requiring active control, such as safety doors and lifting mechanisms. | Electromagnetic coil (copper wire + epoxy), brake disc (alloy steel + coating), return spring | Heat dissipation under high braking torque, electromagnetic compatibility under high current, fast response control. |
| Hydraulic/Pneumatic Safety Brake | Driven by external fluid pressure, provides ultra-large braking torque, used for heavy-duty robots or safety interception. | Brake cylinder (alloy steel), piston (hard chrome plated), friction pair (sintered metal) | High-pressure dynamic sealing, impact resistance and anti-contamination design, smooth braking under large inertia load. |
| Redundant Safety Brake Module | Two independent brake units connected in parallel, used in safety-critical fields such as collaborative robots and medical robots. | Dual electromagnetic/mechanical systems, shared housing, independent control interfaces | High consistency of dual systems, fault detection and isolation, redundant layout in a compact space. |
| Integrated Harmonic Reducer Brake | Brake directly built into the input or output end of the harmonic reducer, highly integrated with zero backlash. | Shared housing with reducer, customized brake disc, miniature electromagnetic components | Interference-free integration with precision transmission components, minimization of brake impact on transmission accuracy. |
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