JZ Series Marine Shaft Mechanical Brake​

Product Overview

The JZ Shaft Mechanical Brake is a double-ended belt-type manual braking device designed for marine shaft systems. It prevents unintended rotation of non-operational shafts (e.g., when engines shut down) and is also suitable for industrial applications (lifting, metallurgy, ports). An optional electromagnetic drum brake variant extends its use to heavy-duty scenarios.

Balanced Braking: Double-ended belts distribute force evenly, avoiding slippage and overheating.

Emergency Reliability: Manual operation (no power needed) ensures functionality during outages.

Easy Maintenance: Replaceable brake pads and universal spare parts minimize downtime.

Signal Integration: AC220V status feedback for enhanced safety.

Product Specifications

Technical Parameter Table

Product Features & Scenario-Based Solutions

Key Features

Durable Components: Forged steel brake wheels (HB240–280) and high-friction pads (μ≥0.4) for long service life.

Ergonomic Design: Anti-slip handwheel and precise screw transmission for controlled braking force.

Corrosion Resistance: Galvanized support structures and marine-grade paint for offshore use.

Scenario Applications

Multi-Shaft Cargo Ships: Locks non-working shafts to prevent propeller-driven wear of engines and crankshafts.

Ship Maintenance: Secures shafts for stern tube seal/bearing repairs.

Port Cranes: The electromagnetic variant (JZ-EM) handles heavy lifting loads.

Coastal Tugboats: Compact JZ110/JZ160 models fit limited space, ensuring reliable braking during towing.

Detailed Product Introduction

Manufacturing & Structural Details

Brake Wheel: Forged from 45 steel, precision-machined for concentricity (≤0.05mm) to avoid vibration.

Brake Belt: Canvas-based friction material bonded to steel backing plates, riveted for easy replacement.

Support System: Q235 steel frame with 8.8-grade Hafu bolts for secure shaft attachment.

Operation Mechanism: Screw-driven handwheel allows incremental tension adjustment to compensate for pad wear.

Compatibility & Installation

Installation is streamlined:

Inspect components for transportation damage.

Clean the brake wheel inner hole and shaft.

Fix the brake wheel to the shaft with Hafu bolts.

Mount the belt assembly, support, and handwheel.

Adjust the support to ensure no unintended braking.

Connect the AC220V signal device (if equipped).

Technical Support & Related Services

Customization Services

Adjust brake wheel size, torque, and surface treatments (e.g., anti-corrosion painting) for offshore/industrial needs.

After-Sales & Quality Assurance

On-Site Guidance: Engineers provide installation training and troubleshooting.

Spare Parts: Brake pads and Hafu bolts delivered in 3–5 days.

Warranty: 12-month coverage for the main body; 3 months for wear parts.

Derivatives: Supply of JZ series electromagnetic drum brakes for industrial use.