The SBD-B Series Industry Calipers for Brake Wheel are hydraulic-actuated, normally closed safety brake systems. With braking forces ranging from 57 kN to 115 kN, the SBD-B Series is widely used in cranes, mining hoists, port handling equipment, belt conveyors, and other industrial machinery requiring dependable emergency braking and holding capabilities.
How It Works
Fail-Safe Design (Normally Closed): The brake relies on a specially engineered, high-fatigue disc spring to apply a powerful mechanical clamping force.
Hydraulic Release: During standard operation, the hydraulic system delivers consistent pressure to compress the disc spring, keeping the brake pads in a released state.
Emergency Response: In the event of an emergency, power failure, or hydraulic pressure loss, the disc spring instantly releases its stored energy. This forces the caliper components to tightly grip the brake wheel/disc.
Product Highlights
100% Fail-Safe Safety: Clamps automatically via disc springs with 57 kN to 115 kN of force during sudden power outages or hydraulic pressure loss.
Millisecond Response: High-leverage mechanical linkage delivers ultra-short closing times to minimize emergency braking distance on low-speed shafts.
Smart PLC Interlocking: Integrated opening and pad-wear limit switches feed real-time fault data directly into the automated system protection loop.
Stable High-Heat Friction: Asbestos-free hard pads maintain a 0.35 friction coefficient under extreme thermal and emergency loads.
Zero-Leak Longevity: Double-sealed 9.5 MPa cylinders eliminate hydraulic fluid leaks in heavy dust, high humidity, and marine environments.
Drop-In SBB Upgrade: Shares identical mounting dimensions with legacy SBB80/SBB160 models for a direct, zero-modification field replacement.
Appearance and installation dimensions
Installation diagram
Braking torque: M=μ × d1 × F (Nm)
In the formula: μ - friction coefficient calculation value μ=0.35
d1- Calculate the friction diameter of the brake disc, d1=D-150(mm)
F-total clamping force during braking (KN)
Note: 1) D-brake disc diameter D≥800 (mm)
2)d2 is the maximum allowable outer diameter of the drum or connecting hub, d2=D-360(mm)
Size table
| Model | Amax | A1max | A2 | C | C1 | ΦE |
| SBD 80-B | 470 | 390 | 450 | 115 | 150 | 120 |
| SBD 160-B | 485 | 415 | 460 | 165 | 215 | 155 |
SBD series safety brake data parameters
| Product model | Rated clamping force | Braking force | Unilateral tile setback distance | Working pressure of oil cylinder | Oil cylinder opening oil volume | Weight |
| SBD80-B | 80 | 57 | 1-2 | 9.5 | 55 | 270 |
| SBD160-B | 160 | 115 | 1-2 | 9.5 | 115 | 310 |
Note: 1)SBD80-B,SBD160-B series safety brake for the original model SBB80,SBB160 series safety brake.
2) Friction coefficient=0.35
Industrial Applications
The Industry Calipers for Brake Wheel are widely deployed worldwide across the following heavy industries:
Port & Logistics Machinery: Emergency safety braking for low-speed shafts on container cranes, gantry cranes, and ship loaders.
Mining Industry: Reliable working and emergency braking for mining winches, heavy-duty hoists, and blast-furnace hoists.
Bulk Material Handling: High-torque braking for high-power inclined belt conveyors and bucket wheel stacker-reclaimers.
Certifications & Quality Assurance
Xuda's manufacturing system and brake products are supported by multiple industry certifications, including:
ISO9001 Quality Management System Certification
Type Test Certificate
Explosion-Proof Certificate
Mining Product Safety Mark Certificate
Manufacturing Capability
Xuda operates a dedicated industrial brake manufacturing facility equipped for machining, assembly, testing, and quality inspection.
Key manufacturing strengths include:
Annual production capacity exceeding 500,000 brake units
More than 100 employees
15% technical and R&D personnel
ISO9001-controlled production processes
In-house inspection and performance testing
FAQ
Q: What type of equipment is the SBD-B brake suitable for?
A: The brake is primarily designed for cranes, mining hoists, industrial winches, belt conveyors, port machinery, and other heavy-duty low-speed shaft applications.
Q: What happens if hydraulic pressure is lost?
A: The disc spring system automatically engages the brake, providing immediate fail-safe stopping and holding capability.
Q: Can the brake be integrated with monitoring systems?
A: Yes. Optional brake position switches and pad wear sensors can be installed for equipment safety monitoring and predictive maintenance.
Q: What friction material is used?
A: The brake utilizes high-performance asbestos-free friction pads with stable friction characteristics and long wear life.
Q: Can customized models be supplied?
A: Yes. Customized mounting dimensions, braking forces, hydraulic configurations, and monitoring options are available according to project requirements.
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