The Hydraulic Direct-Acting Brake is a normally open, hydraulically actuated device engineered for heavy-duty industrial machinery. Utilizing high-strength disc springs for automatic resetting and direct hydraulic actuation, the brake provides reliable clamping force and consistent holding performance.
Key Advantages
Direct-Acting Hydraulic Design: Hydraulic oil directly actuates the piston for fast response and consistent braking force.
Automatic Wear Compensation: Friction plates self-adjust automatically during operation, drastically reducing scheduled maintenance costs.
Flexible B2B Integration: Available in multiple modular configurations with adjustable spacers to seamlessly accommodate both 15mm and 30mm disc thicknesses.
Hydraulic Direct-Acting BrakeADH60, ADH90 and ADH120 Series Brakes – Applicable Brake Disc Thickness: 15 mm or 30 mm.
Technical data
| Model | ADH60 | ADH90 | ADH120 |
| Work pressure (bar) | 50 | 50 | 50 |
| Braking force (N) | F=(P-2.5)×156 | F=(P-2.5)×300 | F=(P-2.5)×471 |
| Oil cylinder volume (cm ³) | 26 | 35 | 54.9 |
| Weight (kg) | 11 | 23 | 45 |
Outline dimensions table
| Model | A | B | C | D | d | E | F | G | L | H | M | N |
| ADH60 | 45 | 72 | 137 | 40 | 25 | 156 | 33 | 60 | 241 | 190 | 50 | 56 |
| ADH90 | 65 | 80 | 180 | 50 | 30 | 205 | 50 | 90 | 285 | 222 | 61 | 56 |
| ADH120 | 80 | 103 | 238 | 58 | 35 | 284 | 68 | 120 | 375 | 245 | 73 | 58 |
ADH60, ADH90 & ADH120 Series Brakes – Applicable Brake Disc Thickness: 15 mm or 30 mm
Outline dimensions table
| Brake | A | B | C | D | E | F | G | H | J | K | L | M | N | O | P | R | S | T | U | W | X |
| ADH60 | 315 | 117 | 90 | 135 | 130 | 245 | 12 | 160 | 110 | 140 | 10 | 120 | 210 | 240 | 54 | 80 | 72 | 10 | 65 | 8 | 9 |
| 355 | 138 | 95 | 145 | 135 | 260 | 12 | 180 | 110 | 140 | 10 | 120 | 210 | 240 | 54 | 80 | 72 | 10 | 65 | 8 | 9 | |
| 395 | 156 | 105 | 150 | 145 | 275 | 12 | 200 | 110 | 140 | 10 | 120 | 210 | 240 | 54 | 80 | 72 | 10 | 65 | 8 | 9 | |
| 445 | 183 | 115 | 160 | 155 | 295 | 12 | 225 | 110 | 140 | 10 | 120 | 210 | 240 | 54 | 80 | 72 | 10 | 65 | 8 | 9 | |
| ADH90 | 495 | 190 | 145 | 165 | 195 | 335 | 14 | 250 | 120 | 150 | 15 | 160 | 270 | 300 | 66 | 96 | 80 | 12 | 70 | 10 | 11 |
| 550 | 220 | 155 | 180 | 205 | 360 | 14 | 280 | 120 | 150 | 15 | 160 | 270 | 300 | 66 | 96 | 80 | 12 | 70 | 10 | 11 | |
| 625 | 255 | 170 | 190 | 220 | 385 | 14 | 315 | 120 | 150 | 15 | 160 | 270 | 300 | 66 | 96 | 80 | 12 | 70 | 10 | 11 | |
| ADH120 | 705 | 278 | 210 | 230 | 270 | 470 | 16 | 355 | 140 | 175 | 20 | 200 | 370 | 400 | 70 | 100 | 103 | 15 | 85 | 12 | 13 |
| 795 | 322 | 230 | 250 | 290 | 510 | 16 | 400 | 140 | 175 | 20 | 200 | 370 | 400 | 70 | 100 | 103 | 15 | 85 | 12 | 13 |
Hydraulic Direct-Acting Brake – Applied External Pressure
DADH75 Hydraulic Direct-Acting Brake
| Braking force | 671×pressure(pressure≤200bar)N |
| Pressure Unit | bar |
| Brake disc diameter Φ B | mm |
| Suitable for disc diameter | ≥Φ700(mm) |
| Weight | 54(kg) |
DADH80 Hydraulic Direct-Acting Brake
| Braking force | 746×pressure(pressure≤200bar)N |
| Pressure Unit | bar |
| Brake disc diameter Φ B | mm |
| Suitable for disc diameter | ≥Φ700(mm) |
| Weight | 58(kg) |
DADH90 Hydraulic Direct-Acting Brake
| Braking force | 967×pressure(pressure≤200bar)N |
| Pressure Unit | bar |
| Brake disc diameter Φ B | mm |
| Suitable for disc diameter | ≥Φ900(mm) |
| Weight |
DADH120 Hydraulic Direct-Acting Brake
| Braking force | 2579×pressure(pressure≤200bar)N |
| Pressure Unit | bar |
| Brake disc diameter Φ B | mm |
| Suitable for disc diameter | ≥Φ1800(mm) |
| Weight |
Target Applications
Our hydraulic direct-acting brakes are trusted globally in heavy industries requiring uncompromising safety and hold-power:
Wind Energy: Suitable for wind turbine yaw systems and rotor locking applications requiring a reliable holding force.
Material Handling & Mining: Fail-safe holding for inclined overland conveyors, stacker-reclaimers, and heavy-duty hoists.
Port Machinery: Storm parking brakes, boom hoists, and emergency brakes for container cranes and ship loaders.
Metallurgy & Heavy Drives: Emergency holding calipers for steel rolling mills and industrial drive lines during power outages.
Why Choose Us?
OEM/ODM Capabilities: Fully customizable mounting dimensions and custom braking force configurations to match your legacy systems.
Certified Quality: Manufactured under ISO9001:2015 quality management systems. All units undergo 100% pressure leak tests before shipment.
Global Compliance: Available with CE, ATEX (Explosion-Proof), and ABS (American Bureau of Shipping) certifications to meet strict regional regulatory or marine project requirements.
FAQ
Q: How do I calculate braking force if the system pressure fluctuates?
A: Use the formulas above. For the ADH series, the 2.5-bar deduction accounts for overcoming the internal return springs. We recommend adding a pressure-regulating valve to stabilize output torque.
Q: When should the friction pads be replaced?
A: While the mechanical automatic compensation maintains a constant air gap during pad wear, pads must be replaced manually once they wear down to the integrated wear limit line.
Q: Can one ADH unit fit both 15mm and 30mm discs?
A: The internal cylinders are identical, but specific spacer configurations are required. Please specify your disc thickness when ordering so we can pre-configure the unit.
Q: Do you provide CAD models and custom mounting?
A: Yes. 2D/3D STEP files are available for engineering integration. We also offer custom mounting brackets to fit legacy retrofits.
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