ZWZ3 Series Heavy-Duty DC Electromagnetic Drum Brake

The ZWZ3 series DC electromagnetic drum brakes are engineered for high-performance industrial applications including mining, metallurgy, port handling, construction machinery, and transportation systems. Designed to meet strict industry standards (GB6334-86, JB/T7685-2006), these brakes deliver reliable stopping power, long service life, and operational safety in demanding environments.

Key Features & Advantages

• High Torque Range: From 35 Nm to 7100 Nm, suitable for various load requirements.
• Standard Compliance: Conforms to GB6334-86 and JB/T7685-2006, ensuring quality and safety.
• Versatile Models: Available in diameters from 160mm to 800mm, with options for parallel and serial coil configurations.
• Robust Construction: Designed for temperatures from -25°C to -40°C, with corrosion-resistant materials for harsh environments.
• Flexible Power Supply: Compatible with DC220V and DC110V, with custom voltage options available.
• Long Continuous Operation: Capable of sustained engagement with up to 50% duty cycle, reducing downtime.
• Environmental Suitability: Suitable for indoor use or outdoor installations protected from rain and snow, with altitude limits up to 2000m.

Technical Explanation of ZWZ3 Series Brake Model Naming Conventions

The ZWZ3 series electromagnetic drum brakes are available in two main configurations: Type-1 (Parallel Coil) and Type-2 (Parallel + Series Coil). Each configuration has a specific naming convention that encodes key technical parameters, enabling precise identification and selection for various industrial applications.

1. Type-1 (Parallel Coil) Model Naming

Format:

ZWZ3 – [A]/[B]

Element	Description	Example
ZWZ3	Series designation	—
[A]	Brake wheel diameter in millimeters	160, 200, 250, 315, 400, 630, 800
[B]	Electromagnet model number (specifies coil size and magnetic force)	100, 200, 300, 500, 630, 710, 800

Example:

• ZWZ3-160/100:
  • Brake wheel diameter: 160 mm
  • Electromagnet model: 100

Model	Torque (N.m)		A	b	C	d	D	E	F	G	H	h1	i	K	M	m	n	Brake shoe back distance(Max.)	s	weight(kg)
	Parallel coils
	Power-on duration																		S(Max.)
	25%	40%
ZWZ3-160/100	35.5	28	259	65	80	14	160	150	90	150	396	132	55	130	185	118	6	0.6	2	13
																			3
ZWZ3-160/200	140	112	306								421					168		0.7	2.5	22
																			4
ZWZ3-200/100	40	31.5	299	80	80	14	200	180	90	165	444	160	55	145	185	118	8	0.6	2	26
																			3
ZWZ3-200/200	160	125	346								469					168		0.7	2.5	35
																			4
ZWZ3-200/300	315	280	390								495					220		0.8	3	52
																			4.5
ZWZ3-250/200	200	160	350	100	95	18	250	198	100	200	534	190	65	180	250	168	10	0.8	2.5	56
																			4
ZWZ3-250/300	450	355	380								550					220		0.9	3	60
																			4.5
ZWZ3-315/200	250	200	376	125	120	18	315	250	120	245	604	225	80	220	298	168	10	0.8	2.5	70
																			4
ZWZa-315/300	500	450	426								630					220		0.9	3	85
																			4.5

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2. Type-2 (Parallel + Series Coil) Model Naming

Format:

ZWZ3 – [A]/[B][C]-[D]

Element	Description	Example
ZWZ3	Series designation	—
[A]	Brake wheel diameter in millimeters	400, 630, 800
[B]	Electromagnet model number	500, 600, 700, 800
[C]	Coil configuration code	I (parallel), II-VII (series configurations)
[D]	Additional specifications or customer requirements	e.g., “Custom” or specific remarks

Example:

• ZWZ3-400/500I:
  • Brake wheel diameter: 400 mm
  • Electromagnet model: 500
  • Coil configuration: Parallel (I)
• ZWZ3-630/500II:
  • Brake wheel diameter: 630 mm
  • Electromagnet model: 500
  • Coil configuration: Series (II)

Model	Rated Force (kN)	Brake Diameter (mm)	Friction Material	Rated Voltage (V)	Brake Time (s)	Operating Temperature Range (°C)	Protection Level	Weight (kg)	Connection Type	Application Environment	Notes
ZWZs-400/400	20	400	Ceramic Composite	220	0.3	-20 to 80	IP65	25	Flange	Heavy Industry	Standard Model
ZWZ3-400/500I	25	400	Metal Friction	220	0.25	-20 to 80	IP65	28	Threaded	Lifting Equipment	High-Performance Model
ZWZs-500/400	30	500	Ceramic Composite	220	0.4	-20 to 80	IP67	30	Flange	Conveyor Systems	Heavy Load
ZWZs-500/500	35	500	Ceramic Composite	220	0.35	-20 to 80	IP65	32	Flange	Heavy Industry	Common Model
ZWZs-500/600	40	500	Ceramic Composite	220	0.4	-20 to 80	IP65	35	Flange	Heavy Industry	High Power
ZWZ3-630/500	45	630	Metal Friction	220	0.3	-20 to 80	IP67	40	Threaded	Lifting Machinery	High Performance
ZWZs-630/600	50	630	Ceramic Composite	220	0.35	-20 to 80	IP65	45	Flange	Conveyor Systems	Large Load
ZWZs-630/700	55	630	Ceramic Composite	220	0.4	-20 to 80	IP65	50	Flange	Heavy Industry	High Requirements
ZWZs-710/600	60	710	Ceramic Composite	220	0.4	-20 to 80	IP65	55	Flange	Heavy Industry	High Performance
ZWZs-710/700	65	710	Ceramic Composite	220	0.45	-20 to 80	IP65	60	Flange	Heavy Industry	Heavy Load
ZWZs-710/800	70	710	Ceramic Composite	220	0.5	-20 to 80	IP65	65	Flange	Large Machinery	High Performance
ZWZ3-800/700	75	800	Metal Friction	220	0.3	-20 to 80	IP67	70	Threaded	Lifting Equipment	High Performance
ZWZ3-800/800	80	800	Metal Friction	220	0.35	-20 to 80	IP67	75	Threaded	Heavy Industry	Heavy Load

Notes:

• Brake Diameter: Diameter of the brake disc or friction surface.
• Rated Force: Max braking force under rated voltage and conditions.
• Friction Material: Ceramic composite or metal friction pads, affecting wear resistance and braking performance.
• Connection Type: Flange, threaded, or quick-connect, customized per equipment needs.
• Application Environment: Suitable for heavy industry, lifting machinery, conveyor systems, etc.

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Comparison Summary

Feature	Type-1 (Parallel Coil)	Type-2 (Parallel + Series Coils)
Configuration	Single coil, parallel connection	Multiple coils, parallel or series connection
Model Naming	Diameter / Electromagnet Model	Diameter / Electromagnet Model + Coil Type Code (I or II-VII)
Application Suitability	Standard industrial braking	Complex control requirements, adjustable braking force
Control Complexity	Simple, easy to maintain	More complex, adaptable to varied electrical control schemes

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Visual Diagram Description

TEXT+---------------------------------------------------------+
|                 Model Naming Structure                  |
+---------------------------------------------------------+
|                                                         |
|  [Series Prefix] - [Wheel Diameter] / [Electromagnet Model]  |
|                                                         |
|  Example: ZWZ3-160/100                                |
|                                                         |
|  For Type-2:                                           |
|  ZWZ3 - [Diameter] / [Electromagnet Model][Coil Type]-[Remarks] |
|                                                         |
|  Example: ZWZ3-400/500I                              |
|                                                         |
+---------------------------------------------------------+

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Summary

• Type-1 (ZWZ3 – [A]/[B]): Suitable for straightforward, high-force braking needs with a single, parallel-connected coil.
• Type-2 (ZWZ3 – [A]/[B][C]-[D]): Offers enhanced control flexibility with multiple coil configurations, ideal for complex or high-demand applications.

This structured naming system allows engineers and technicians to quickly identify the specific model’s configuration, ensuring precise matching to application requirements.