Latest Products
Contact Us
- Wei Four Road, Weizhuang industrial Park, Changyuan District, Xinxiang City, Henan Province, China
- sales@zybc.com
- +86-373-7136666
YWZ4-150/E23 Power-Off Auto Brake – 100N·m Spring-Applied Drum Brake With Ed23/5 Thruster, JB/T6406 Compliant
YWZ4-150/E23 Power-Off Auto Brake ✔ Fail-Safe, Spring-Applied - Power Off = Brake On Normally closed design. When power cuts or thruster de-energizes, internal springs instantly clamp the brake shoes onto the drum. No external energy needed for braking. Prevents load runaway on crane hoist and...
Description
YWZ4-150/E23 Power-Off Auto Brake
✔ Fail-Safe, Spring-Applied - Power Off = Brake On
Normally closed design. When power cuts or thruster de-energizes, internal springs instantly clamp the brake shoes onto the drum. No external energy needed for braking. Prevents load runaway on crane hoist and trolley drives.
✔ Ed23/5 Electro-Hydraulic Thruster - Fast & Stable
Equipped with Ed23/5 thruster (23kg thrust / 0.5s closing, 0.35s opening). IP65 motor, class F insulation, HZ/TZ dual-travel structure. Smooth engagement, low impact, long service life (≥1 million cycles).
✔ Equal Clearance Mechanism - No Shoe Drag
Automatic equal-retraction linkage ensures both brake shoes retract evenly. No unilateral wear, no drum overheating. Lining life extended by 30% vs. old YWZB series.
✔ Quick-Change Lining, Self-Lubricating Pivot
Asbestos-free insert linings with card-lock design - no riveting, replace in 10 minutes on site. All hinge pins use oil-free self-lubricating bearings (no daily greasing needed).
Products Description
The YWZ4-150/E23 is a heavy-duty normally closed electro-hydraulic drum brake widely used on bridge cranes, gantry cranes, belt conveyors, and winch trolleys. It uses a spring for braking and an Ed23/5 electro-hydraulic thruster for release - the most proven and economical brake solution in Chinese crane industry for 20+ years.
It is the recommended upgrade over legacy YWZB models: improved equal-clearance mechanism, self-lubricating hinges, and torque scale indicator on the spring rod.
Typical Applications:
Overhead / gantry crane hoist & trolley drives
Belt conveyor head pulley (emergency & parking stop)
Port quayside crane travel mechanism
Mine hoist auxiliary drives
Metallurgical plant transfer cars
⚙️ Technical Specifications
|
Parameter |
Value |
|---|---|
|
Model |
YWZ4-150/E23 |
|
Brake Type |
Normally closed, spring-applied, electro-hydraulic released |
|
Brake Wheel (Drum) Diameter |
Ø150 mm |
|
Rated Braking Torque |
100 N·m |
|
Thruster Model |
Ed23/5 (Ed23/6 optional) |
|
Thruster Thrust |
23 kgf |
|
Opening Time |
~0.35 s |
|
Closing Time |
~0.50 s |
|
Thruster Voltage |
380V/50Hz (220V/440V/60Hz available on request) |
|
Protection Class |
IP65 (thruster) |
|
Insulation Class |
F |
|
Friction Lining |
Asbestos-free, rivet-free insert type |
|
Lining Wear Indicator |
Torque scale on spring rod (visual check) |
|
Ambient Temp. |
-20°C to +50°C (standard) |
|
Standard |
JB/T6406-2006 (equivalent DIN 15435) |
|
Mounting |
Horizontal base mounting, left/right hand interchangeable |
|
Options |
Manual release lever, limit switch (open/closed signal), heating element for cold zone |
Hot Tags: ywz4-150/e23 power-off auto brake – 100n·m spring-applied drum brake with ed23/5 thruster, jb/t6406 compliant, China, manufacturers, supplier, factory, customized, durable crane drum brake, Electro Hydraulically released Drum Brakes, Electro Thrust Industrial Brakes, Gantry crane drum brake, Hydraulic Operated Brakes, Windproof drum brake
You Might Also Like
