Square Hub Servo Motor Brake
Product Details
Technical Parameters
| Frame Size | Static Torque (N·m) | Coil Parameters (20°C) | Thermal Class | Max Speed (r/min) | Moment of Inertia J [kg·m²] | Allowable Single Braking Work Eₐₐ (J) | Total Braking Work E_T (J) | Pull-in Time (ms) | Release Time (ms) | Backlash (°) | Mass (kg) | |||
| Voltage (V) | Power (W) | Current (A) | Resistance (Ω) | |||||||||||
| 40 | 0.32 | 24 | 6.6 | 0.27 | 87.3 | F | 6000 | 1.8×10⁻⁷ | 18 | 3600 | 40 | 20 | 1.5 | 0.12 |
| 40 | 0.45 | 24 | 6.9 | 0.28 | 83.5 | F | 6000 | 2×10⁻⁷ | 18 | 3600 | 40 | 20 | 1.5 | 0.12 |
| 60 | 1.5 | 24 | 7.6 | 0.31 | 76 | F | 6000 | 2×10⁻⁶ | 120 | 2.4×10⁴ | 50 | 20 | 1 | 0.3 |
| 60 | 1.5 | 24 | 8.3 | 0.34 | 69.4 | F | 6000 | 2×10⁻⁶ | 120 | 2.4×10⁴ | 50 | 20 | 1 | 0.35 |
| 80 | 3.2 | 24 | 10 | 0.42 | 57.6 | F | 6000 | 5.4×10⁻⁶ | 360 | 7.2×10⁴ | 60 | 40 | 1 | 0.5 |
| 80 | 3.2 | 24 | 10 | 0.42 | 57.6 | F | 6000 | 5.4×10⁻⁶ | 360 | 7.2×10⁴ | 60 | 40 | 1 | 0.45 |
| 80 | 3.8 | 24 | 11.5 | 0.48 | 50.1 | F | 6000 | 8.2×10⁻⁶ | 360 | 7.2×10⁴ | 60 | 40 | 1 | 0.45 |
| 100 | 6 | 24 | 23 | 0.96 | 25 | F | 5000 | 3.5×10⁻⁵ | 500 | 1×10⁵ | 80 | 40 | 1 | 1 |
| 110 | 5.5 | 24 | 24.5 | 1.02 | 23.5 | F | 5000 | 3.45×10⁻⁵ | 500 | 1×10⁵ | 100 | 40 | 1 | 0.55 |
| 130 | 6.6 | 24 | 21.5 | 0.9 | 26.8 | F | 5000 | 3.5×10⁻⁵ | 800 | 1.6×10⁵ | 110 | 50 | 1 | 1.1 |
| 150 | 10 | 24 | 18 | 0.75 | 32 | F | 5000 | 3.9×10⁻⁵ | 1000 | 2×10⁵ | 120 | 50 | 1 | 1.5 |
| 180 | 25 | 24 | 31 | 1.29 | 18.6 | F | 5000 | 3.1×10⁻⁵ | 1500 | 3×10⁵ | 120 | 50 | 1 | 2.7 |
| 220 | 40 | 24 | 32 | 1.33 | 18 | F | 4000 | 8.6×10⁻⁴ | 2000 | 3×10⁵ | 300 | 100 | 1 | 6 |
| Frame Size | Radial Dimensions | Axial Dimensions | ||||||||||||
| A | B | C | D | E | S | V | F | G | H | I | J | K | W | |
| 40 | 33 | 26.5 | 16 | 9 | 15 | 6 | 3.3 | 12 | 0.1 | 4 | 19 | 25.5 | 30 | AWG26 |
| 40 | 35 | 30 | 17.2 | 9.5 | 15 | 6 | 3.3 | 12 | 0.2 | 4 | 13 | 20 | 24.3 | AWG26 |
| 60 | 52 | 45 | 26 | 14 | 24.5 | 7 | 3.4 | 19 | 2 | 4 | 8 | 20.3 | 25 | AWG22 |
| 60 | 53 | 46 | / | 15 | 24.5 | 7 | 3.4 | 19 | / | 4 | 8 | 18.5 | 23.5 | AWG22 |
| 80 | 64 | 56 | 28 | 22 | 31 | 8 | 4.3 | 25 | 0.2 | 4 | 16 | 25.3 | 30.2 | AWG22 |
| 80 | 68 | 60 | 28 | 24 | 31 | 8 | 4.5 | 25 | 0.2 | 4 | 7.5 | 19.7 | 24.5 | AWG22 |
| 80 | 70 | 62 | / | 19 | 31 | 8 | 4.5 | 25 | / | 4 | 17 | 17.2 | 22.3 | AWG22 |
| 100 | 85 | 75 | 48 | 32 | 36 | 9 | 4.5 | 28 | 0.2 | 4 | / | 27 | 35.8 | AWG22 |
| 110 | 93.5 | 85 | / | 50.5 | 55 | 10 | 4.5 | 45 | / | 4 | / | 14.3 | 20.5 | AWG20 |
| 130 | 123.5 | 115 | / | 62 | 55 | 9.5 | 4.5 | 45 | 8 | 4 | 28 | 14.6 | 24.3 | AWG20 |
| 150 | 137.5 | 130 | / | 65 | 60 | 12 | 4.5 | 50 | 8 | 4 | 30 | 17.6 | 25 | AWG20 |
| 180 | 167.5 | 158 | / | 80 | 74 | 12 | 5.5 | 60 | 10 | 4 | 34 | 18 | 25 | AWG20 |
| 220 | 185 | 175 | / | 100 | 74 | 12.5 | 6.5 | 60 | 10 | 4 | 34 | 38 | 48 | AWG20 |
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Square Hub Servo Motor Brake
Standard Square Mounting · Torque from 0.32 to 550 N·m · Zero Torque Degradation at 120°C
Engineered with a standardized square hub interface, this high‑reliability, power‑off safety brake is purpose‑built for servo‑driven automation equipment. Covering a torque range of 0.32 N·m up to 550 N·m (customizable), it features quick square‑flange alignment, stable torque output even under continuous 120°C conditions, and automated potting and assembly processes that guarantee exceptional batch‑to‑batch consistency – making it the ideal braking solution for precision motion control systems.
Core Advantages
1. Standard Square Hub Mounting for Faster Assembly
The unified square mounting interface enables quick, alignment‑free installation and perfectly matches mainstream servo motor flanges, significantly reducing mechanical development and assembly time. The low‑backlash internal structure ensures ultra‑precise positioning after brake engagement.2. Stable Torque at 120°C High Temperature
Equipped with Class F heat‑resistant coils and an optimized magnetic circuit, the static torque remains stable – with no decay or drift – under continuous 120°C operating conditions. This makes it ideal for high‑temperature workshops, enclosed equipment, and other harsh industrial environments.3. Fully Automated Potting & Assembly for Unmatched Consistency
Our fully automatic production lines handle coil winding, vacuum potting, and final assembly, minimizing manual variability. Every batch delivers consistent resistance, power consumption, and braking performance – eliminating the quality fluctuations often seen with manual assembly.4. Self‑Developed High‑Performance Friction Material
Using our proprietary friction compound, we effectively address two common industry challenges: long‑term powder shedding and abnormal braking noise. Excellent wear resistance extends service life, especially in frequent start‑stop applications.5. Complete Standard Series Plus Flexible Customization
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Standard frame sizes: 40 / 60 / 80 / 100 / 110 / 130 / 150 / 180 / 220
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Standard static torque: 0.32 – 40 N·m; custom high torque up to 550 N·m available
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Standard coil voltage: DC 24V, low steady‑state holding power
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Maximum speed up to 6000 r/min; high single‑cycle and total braking energy capacity for heavy‑duty, frequent braking demands
Working Principle
This power‑off electromagnetic brake remains released when energized. Upon power loss, the built‑in spring instantly presses the friction plate against the rotor hub, providing reliable shaft locking to prevent equipment runaway. It offers critical safety protection for servo systems during power failures or emergency stops.
Typical Applications
✅ Collaborative robot joints & miniature servo modules
✅ CNC machine tools & precision machining spindles
✅ AGV / AMR logistic mobile robots
✅ Medical automation & optical inspection equipment
✅ New energy production line automation
✅ Semiconductor compact transmission mechanisms -
Available in 40–220 frame sizes; torque, dimensions, and voltage can be tailored to your needs. Contact us for more information.
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