DSK Korean Parallel Shaft Helical Geared Motor - DF-Series

DSK Korean Parallel Shaft Helical Geared Motor DF-Series

Introduction to DSK DF-Series Geared Motors

The DSK DF-Series is a line of parallel shaft helical geared motors from DSK, part of the DSK Geared Motor range developed by Daesung Industrial Co., Ltd. – Korea. This product line is designed for drive systems requiring stable torque, a wide gear ratio range, various mounting configurations, and flexible application capabilities in industrial plants.

Unlike the DR-Series helical geared motor with a coaxial design, the DF-Series utilizes a parallel shaft design, meaning the input and output shafts are arranged in parallel. This design helps optimize installation space, especially in conveyor systems, packaging machines, feeding machines, agitators, and production lines that require compact drives while maintaining high pulling force.

With a power range from 0.4kW to 200kW, a maximum gearbox torque of 18,000Nm, and gear ratios from 3.77 to 22,323, the DF-Series is suitable for various applications ranging from light and medium loads to industrial drive systems requiring high torque.

What is the DSK DF-Series?

DF-Series DSK – Parallel Shaft Helical Geared Motors are a line of parallel shaft helical geared motors. The product uses a helical gear mechanism to reduce the rotational speed from the motor and increase the output torque for machinery.

The helical gear structure allows for smoother meshing compared to spur gears, helping to reduce noise, minimize vibration, and increase operational stability. The parallel shaft design makes the DF-Series suitable for systems requiring horizontal transmission, particularly industrial conveyors and machinery assemblies with limited installation space.

The DF-Series is often chosen when users require:

• Parallel shaft geared motors

• Helical geared motors

• Gearboxes with a wide gear ratio range

• Compact designs for conveyors and packaging machines

• Korean geared motors with high stability

• Various mounting styles including foot-mounted, flange-mounted, hollow shaft, and input-shaft versions

General Specifications of DSK DF-Series

Highlights of DSK DF-Series

Space-optimized parallel shaft design

The DF-Series utilizes a parallel shaft structure, allowing for a more compact arrangement of the motor and output shaft compared to many other transmission types. This design is ideal for conveyor systems, packaging machines, feeding machines, and automation lines that require horizontal equipment layout.

In industrial applications, installation space is often constrained by machine frames, bases, conveyor rails, or control cabinets. Therefore, parallel shaft geared motors are an efficient choice when robust transmission is required without occupying excessive space.

Helical gear mechanism for stable operation

The DF-Series belongs to the helical geared motor category, utilizing helical gears for power transmission. The advantage of this mechanism is smoother meshing, which helps reduce vibration, minimize noise, and increase stability during continuous operation.

This is why helical geared motors are commonly used in production lines requiring high reliability, such as production conveyors, packaging machines, food processing equipment, logistics systems, and material handling equipment.

Wide power range and gear ratio

The DF-Series offers a power range from 0.4kW to 200kW, suitable for various load levels. The gear ratio range from 3.77 to 22,323 allows users to easily select the appropriate output speed for each specific application.

A higher gear ratio results in lower output speed and higher output torque. Therefore, when selecting a DF-Series unit, it is essential to clearly define the desired speed, operating load, and required torque to choose the correct model.

Flexible mounting configurations

The DF-Series features various mounting configurations, including foot-mounted, B5 flange, B14 flange, hollow shaft, and input-shaft styles. This facilitates easy integration into diverse machine designs.

Common mounting types include:

• Foot-mounted

• B5 flange-mounted

• B14 flange-mounted

• Hollow shaft

• Solid shaft

• Input-shaft style

Thanks to this versatility, the DF-Series can be used for both newly designed machines and as replacements for existing gearboxes in current production lines.

Main types of DSK DF-Series

The DF-Series includes various types to suit different mounting configurations and transmission requirements.

DFA Type – Foot Mounted Parallel Shaft Helical Gear Reducer With Hollow Shaft

The DFA type is a parallel shaft helical gear reducer, foot-mounted, and equipped with a hollow shaft.

Key features:

• Type: DFA

• Gearbox type: Parallel shaft helical gear reducer

• Mounting style: Foot mounted

• Shaft type: Hollow shaft

• Suitable for systems requiring direct mounting onto the machine shaft

DFA Type is suitable for conveyors, feeders, transport equipment, and machine assemblies requiring compact and robust drive solutions.

DF Type – Foot Mounted Parallel Shaft Helical Gear Reducer

DF Type is a foot-mounted parallel shaft helical gear reducer series.

Main features:

• Type: DF

• Reducer type: Parallel shaft helical gear reducer

• Mounting type: Foot mounted

• Shaft type: Solid shaft

• Suitable for machine bases, frames, and fixed drive systems

DF Type is typically used when connection to couplings, pulleys, sprockets, or external drive mechanisms is required.

DFAF Type – B5 Flange-Mounted Version With Hollow Shaft

DFAF Type is a B5 flange-mounted parallel shaft helical gear reducer series with a hollow shaft.

Main features:

• Type: DFAF

• Reducer type: Parallel shaft helical gear reducer

• Mounting type: B5 flange-mounted

• Shaft type: Hollow shaft

• Suitable for designs requiring direct flange mounting

DFAF Type is suitable for machine assemblies that require the gearbox to be secured via a flange to increase rigidity and optimize installation space.

DFF Type – B5 Flange-Mounted Parallel Shaft Helical Gear Reducer

DFF Type is a B5 flange-mounted parallel shaft helical gear reducer series.

Main features:

• Type: DFF

• Reducer type: Parallel shaft helical gear reducer

• Mounting type: B5 flange-mounted

• Suitable for machines requiring direct flange connection

• Ideal for drive assemblies with precise alignment requirements

DFAZ Type – B14 Flange-Mounted Version With Hollow Shaft

DFAZ Type is a B14 flange-mounted parallel shaft helical gear reducer series with a hollow shaft.

Main features:

• Type: DFAZ

• Reducer type: Parallel shaft helical gear reducer

• Mounting type: B14 flange-mounted

• Shaft type: Hollow shaft

• Suitable for machines with smaller installation space compared to B5 type

DFAZ Type is often considered when a compact configuration, flange mounting, and direct connection to the machine shaft are required.

DFS Type – Input-Shaft Style

DFS Type is an input-shaft style gear reducer, also referred to as the Line Power Type.

Main features:

• Type: DFS

• Input type: Input-shaft style

• Suitable for drive systems using couplings, pulleys, chains, or belts

• Can be used in applications requiring separate drive configurations

DFS Type is suitable when the user does not require an integral motor and wishes to connect the gearbox to another drive source via an input shaft.

How to read the DSK DF-Series model code

The DF-Series model code indicates critical information such as type, frame, gear ratio, motor power, voltage, frequency, motor options, and brake options.

Reference structure:

DFA 97 - 20.07 / 22kW - 380V - 60Hz - (-) / AC-B

Example 1: DFAF57-44.73/1.5kW-2/3V-60Hz(INV)/DC-B

This model can be understood as follows:

• DFAF Type

• Frame 57

• Ratio 44.73

• Motor 1.5kW

• Voltage 220/380V

• Frequency 60Hz

• INV option – for inverter

• DC-B – DC Brake

Example 2: DF77-108.46/2.2kW-2/3V-50Hz/AC-B(HL)

This model can be understood as follows:

• DF Type

• Frame 77

• Ratio 108.46

• Motor 2.2kW

• Voltage 220/380V

• Frequency 50Hz

• AC-B – AC Brake

• HL – Hand Lever Brake

When selecting an actual model, it is necessary to verify the correct ratio, output speed, torque, voltage, frequency, mounting type, and brake options according to the operational requirements.

Size and Torque Range of DF-Series DSK

The DF-Series is available in common sizes from 37 to 157. Each size has different torque limits, power ranges, and gear ratios.

The motor power range can be up to 200kW depending on the size and configuration. When selecting a product, do not rely solely on the motor power; it is necessary to also check the output torque, gear ratio, output speed, service factor, and radial load on the shaft.

Applications of DSK DF-Series geared motors

The DF-Series is suitable for many industrial drive systems that require stability, compact design, and high torque.

Common applications include:

• Industrial conveyors

• Carton conveyors

• Logistics conveyors

• Packaging machines

• Feeding machines

• Agitators

• Mixers

• Food processing machines

• Packaging production machines

• Automation lines

• Material handling systems

• Mechanical engineering equipment

With its parallel shaft design, the DF-Series is particularly suitable for applications requiring horizontal transmission, long machine frames, or conveyor systems with limited installation space.

When to choose the DF-Series instead of the DR-Series?

Both the DF-Series and DR-Series are DSK helical geared motor lines, but they differ in their transmission structure.

The DF-Series should be chosen when:

• A parallel shaft design is required

• A compact horizontal arrangement of the motor and output shaft is needed

• The conveyor system has limited installation space

• A hollow shaft is required for direct mounting onto the machine shaft

• B5 or B14 flange configurations are needed

• A wide range of gear ratios and multiple mounting styles are required

• The application requires stable, smooth, and continuous transmission

The DR-Series should be considered when:

• An inline helical geared motor type is required

• The motor and output shaft need to be arranged in the same direction

• The installation space is suitable for the DR structure

• The application does not require a parallel shaft design

The choice between DF and DR should be based on the machine layout, output shaft position, mounting style, working load, and required speed.

How to select the appropriate DSK DF-Series

To select the correct DF-Series model, it is necessary to fully define the operating information of the system.

The information to be prepared includes:

1. Application

2. Required motor power

3. Input motor speed

4. Desired output speed

5. Required gear ratio

6. Output torque

7. Load type: light, medium, heavy, shock

8. Start and stop frequency

9. Daily operating hours

10. Radial and axial loads

11. Transmission method: coupling, sprocket, chain, belt, or pulley

12. Mounting type: foot-mounted, B5 flange, B14 flange

13. Shaft type: solid shaft, hollow shaft, or input shaft

14. Motor voltage and frequency

15. Requirements for brake, inverter, encoder, or axial fan

Do not select the DF-Series based solely on motor power. For the same power, if the gear ratio, load, and operating time differ, the appropriate model may also vary.

DSK Geared Motor Options

The DF-Series can be configured with various options depending on actual operational requirements.

Among these, the INV – Use for Inverter option is suitable for systems requiring speed adjustment via a VFD. If the motor operates at low speeds for extended periods, cooling conditions must be verified, and an axial fan option should be considered.

The AC-B or DC-B options are suitable for applications requiring load stopping, load holding, or improved machine stop control.

Notes on Installation and Operation of the DF-Series

When installing the DF-Series, the following factors must be considered:

• Determine the correct mounting position

• Check the breather valve position

• Check the oil level before operation

• Ensure a rigid mounting base without misalignment

• Check radial load if using pulleys, sprockets, chains, or belts

• Do not operate under overload conditions for extended periods

• Select the correct lubricant as recommended

• Check for noise, vibration, and temperature during trial runs

• Ensure the connecting shaft is properly aligned

• Check the brake option if the system requires load stopping

For systems with shock loads, frequent start/stop cycles, or high radial loads, technical verification is recommended before confirming the model.

MDriveTech Consultation for DF-Series DSK Selection

MDriveTech provides consultation for selecting DSK DF-Series geared motors based on the actual requirements of each machinery system. When selecting a model, customers should provide information such as motor power, desired output speed, gear ratio, load type, operating duration, mounting type, radial load, axial load, voltage, frequency, and required options.

Selecting the correct model ensures stable operation of the drive system, limits overloading, reduces the risk of damage, and optimizes investment costs for the production line.

Hotline: 0868 789 647
Email: [email protected]

Frequently Asked Questions about DF-Series DSK

What is the DF-Series DSK?

The DF-Series DSK is a line of parallel shaft helical geared motors.

What is the power range of the DF-Series DSK?

The DF-Series has a power range from 0.4kW to 200kW, depending on the size and selected configuration.

What is the gear ratio of the DF-Series?

The gear ratio range of the DF-Series is from 3.77 to 22,323.

What is the maximum torque of the DF-Series?

The Gearbox Max Torque of the DF-Series is 18,000Nm.

What types are available in the DF-Series?

The DF-Series includes the following main types: DFA, DF, DFAF, DFF, DFAZ, and DFS.

What is the difference between DFA and DF?

DFA is a foot-mounted parallel shaft helical gear reducer with a hollow shaft. DF is a foot-mounted parallel shaft helical gear reducer with a standard solid output shaft.

Can the DF-Series be used with a VFD?

Yes. The DF-Series has an INV option – Use for Inverter. When using with a VFD, it is necessary to select the correct motor option and check the cooling conditions, low-speed operation, and actual working load.

What applications is the DF-Series suitable for?

The DF-Series is suitable for conveyors, packaging machines, feeders, agitators, mixers, logistics, automation lines, and industrial drive systems requiring a parallel shaft design.

Conclusion

The DF-Series DSK is a line of parallel shaft helical geared motors from DSK Korea, suitable for drive systems that require stable operation, compact design, a wide gear ratio range, and various mounting options.

With a power range of 0.4–200kW, a maximum gearbox torque of 18,000Nm, and a ratio of 3.77–22,323, the DF-Series effectively meets the requirements of many applications such as conveyors, agitators, packaging machines, feeders, logistics, and industrial production lines.

When selecting the DF-Series, it is essential to fully verify the power, output speed, gear ratio, torque, service factor, overhung load, mounting position, shaft type, and motor/brake options to ensure the product is suitable for the actual operating conditions.