MDT 400-46 Mill Duty Thruster Brake (For 400mm Drum)
The ultimate fail-safe thruster brake for extreme heavy-duty and high-torque applications.
- Extreme Braking Torque: Delivers a massive 180 Kg-m of torque for maximum stopping power.
- Heavy-Duty Frame: Built with an exceptionally robust, welded steel frame for severe-duty use.
- High-Performance Thruster: Paired with the AT-546 (46 Kg) thruster for powerful and reliable actuation.
- High-Frequency Operation: Capable of up to 720 operations per hour for continuous, demanding cycles.
- Dust & Water Protection: IP-55 rated to ensure reliability in the harshest industrial environments.
Request a Quote for this Brake
Contact our engineering team for pricing, availability, and technical support.
Call for Enquiry Download Catalog Download 2D DrawingTechnical Details & Video
| Model | MDT 400-46 |
| Brake Drum Diameter | 400 mm |
| Thruster Model Used | AT-546 (46 Kg) |
| Braking Torque | 180 Kg-m |
| Operations per Hour | Up to 720 |
| IP Rating | IP-55 |
Working Principle
The MDT 400-46 Thruster Brake operates as an essential fail-safe system. A pre-stressed compression spring continuously applies braking force to the brake shoes. When electrical power is directed to the integrated electro-hydraulic thruster, it generates hydraulic pressure that counteracts the spring force, lifting the shoes from the 400mm drum and allowing machinery to run. Should power be cut, the thruster de-energizes, and the spring's force instantly applies the brake shoes, ensuring that the load is retarded and held securely and safely.
Braking Torque & Sizing Guidelines
Anand Systems MDT Electro-Hydraulic Thruster Brakes operate on a fail-safe spring-applied mechanism. In the unpowered state, heavy compression springs force the brake shoes firmly against the brake drum. When electrical power is applied, the centrifugal pump inside the electro-hydraulic thruster generates oil pressure, smoothly pushing the piston upward to release the brake shoes. This MDT 400-46 model is matched to a 400 mm brake drum.
Braking Torque Formula
T_b = 2 × μ × F_spring × (D_drum / 2) × η
Where μ = friction coefficient (0.35 to 0.40), F_spring = spring thrust force, D_drum = drum diameter in metres (400 mm = 0.400 m for this model), and η = mechanical linkage efficiency (0.90).
Operating Parameters & Drum Compatibility
- Duty cycle rating: S3-40% / S4-60%, up to 720 switching operations per hour.
- Hydraulic fluid: transformer oil (IS:335) or ISO VG 32 hydraulic oil.
- Brake drum compatibility: precision-balanced cast iron and forged / cast steel / EN-8 drums, 100 mm to 400 mm diameter.