Protection options
Discuss IP44 and IP54 configurations for suitable industrial environments.
Industrial DC motor solutions / Z series
DC Waterproof Electric Motors for Industrial Applications
Explore industrial DC motor solutions for rolling mills, mixers and heavy machinery. Discuss protection, cooling, mounting and electrical specifications suited to your operating conditions.
01 / Motor overview
Industrial DC Motors Designed for Demanding Environments
Hengli's industrial DC motors serve machinery requiring controlled speed and torque under demanding loads. For equipment exposed to moisture or dust, enclosure protection and cooling must be matched to the site conditions.
Speed & torque
DC drive configurations for variable-speed and heavy-load machinery.
Motor configuration
Review electrical, cooling and mounting requirements for your project.
02 / Motor models
Explore Our Industrial DC Motor Models
Two Z series ranges for rolling mills and heavy industrial drives.
Z series / 350–2000 kW
Z500–Z710 Series DC Motors
Motor configurations for rolling mills, mixers and other heavy machinery.
View product specifications →
Z series / 1000–2800 kW
Z800–Z1120 Series DC Motors
Large-frame DC motor options for high-power industrial drive applications.
View product specifications →Product images are sourced from the respective product listings. Confirm frame size and final configuration with Hengli.
03 / Technical specifications
DC Waterproof Electric Motor Technical Specifications
Use these published ranges as a starting point. Availability varies by model and configuration.
| Specification | Published options / range |
|---|---|
| Motor type / series | Brushed DC motor / Z series |
| Rated power | 350–2800 kW across featured listings |
| Rated speed | 100–2000 rpm (Z500–Z710 listing) |
| Protection rating | IP21S, IP23, IP44, IP54 |
| Insulation class | F, H |
| Cooling methods | IC06, IC17, IC37, IC86W |
| Mounting | IMB3, IMB35, IMV1; IMV15 on Z500–Z710 listing |
| Armature voltage | Model-dependent options |
| Operating duty | S1, subject to model confirmation |
Not every combination is available for every motor. Confirm the applicable technical documents, power, speed, protection and installation conditions before ordering.
Discuss Your Specifications →04 / Industrial applications
DC Motor Applications Across Heavy Industry
Different equipment and worksites call for different electrical, mechanical and enclosure configurations.
Rolling Mills & Steel Processing
For rolling mills, coilers, uncoilers and pinch rolls where speed regulation and torque control matter.
Rubber & Plastic Mixing
Motor solutions for mixers, open mills, extruders and calenders under demanding loads.
Cement & Mineral Processing
DC drives for rotary kilns, conveyors, crushers and other processing equipment.
Mining & Hoisting Equipment
High-power drives selected around load control, mounting and operating requirements.
05 / Protection & cooling
Protection Ratings and Cooling Options for DC Motors
Understanding IP Protection Ratings
Choose an enclosure based on actual exposure to solids and water, not the product name alone.
IP21S
Protection against objects ≥12.5 mm and vertically dripping water; water test applies while stationary.
IP23
Protection against objects ≥12.5 mm and water sprayed within 60° of vertical.
IP44
Protection against objects ≥1 mm and splashing water from any direction.
IP54
Dust-protected enclosure and protection against splashing water from any direction.
IP54 does not imply high-pressure washdown or immersion protection. Outdoor use also requires evaluation of weather, condensation and installation conditions.
Cooling Methods for Heavy-Duty DC Motors
Published options include IC06, IC17, IC37 and IC86W. The appropriate arrangement depends on heat removal, available space, cooling supply and site conditions.
Before specifying a motor
Share your ambient temperature, dust and moisture exposure, ventilation or cooling provisions, duty cycle and maintenance access with the engineering team.
Request configuration guidance →
06 / Project configuration
Custom DC Motor Solutions for Industrial Projects
Define the operating conditions and interfaces before selecting a motor. Available options are subject to engineering review.
Electrical
Power, armature and field voltage, speed range and duty.
Protection & cooling
IP rating, cooling arrangement and environmental exposure.
Mechanical
Mounting, shaft arrangement and installation space.
Monitoring
Discuss temperature sensors, space heaters and specified components.
07 / Why Hengli
Industrial Motor Experience, Project by Project
Explore manufacturer information and discuss the technical documents and configuration applicable to your order.
1954Company founded
2800 kWMaximum power in featured listings
OEM & ODMProject-based motor configuration
IEC 60034Referenced in a product listing
Applicable standards and documentation should be confirmed for the selected model.
08 / Frequently asked questions
Frequently Asked Questions About DC Waterproof Motors
What IP rating should I choose for a DC motor in a wet industrial environment?
Describe the source and direction of water, dust levels, cleaning methods and installation location. IP44 or IP54 can provide splash protection when available, but the correct rating and cooling arrangement must be assessed for the specific conditions.
Can an IP54 DC motor operate outdoors?
IP54 addresses dust ingress and splashing water. Outdoor use may also involve rain exposure, condensation, corrosion, sunlight and ambient temperature; discuss additional protection and installation requirements with the manufacturer.
What is the difference between IP44 and IP54 DC motors?
Both ratings include protection against splashing water. IP44 protects against solid objects of at least 1 mm, while IP54 provides protection against harmful dust ingress.
How do I select a DC motor for a rolling mill?
Start with power, speed range, load and duty cycle, then review voltage, torque requirements, cooling, enclosure protection, mounting and shaft dimensions with the drive and motor supplier.
Can Hengli customize voltage, mounting and cooling configurations?
Project requirements can be discussed through Hengli's OEM and ODM service. Available options and combinations depend on the model and engineering review.
09 / Start a conversation
Request a Quote for Your Industrial DC Motor
Tell us about your power, speed, voltage and operating environment. We will help you identify the information needed for a suitable configuration.
