DSK Helical Geared Motors from South Korea
DR-Series DSK Helical Geared Motors: helical gear reducer with power range 0.4–160kW, ratio 3.37–7,307, and torque up to 18,000Nm.
DR-Series DSK – Helical Geared Motors | DSK Helical Geared Motors from South Korea
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What is the DR-Series DSK?
DR-Series DSK – Helical Geared Motors is a line of helical gear reducers belonging to the DSK DX-Series Geared Motor catalog by Daesung Industrial Co., Ltd.
According to the DSK catalog, the DR-Series is classified under HELICAL GEARED MOTORS, featuring a power range from 0.4kW to 160kW, a maximum gearbox torque of 18,000Nm, and a gear ratio range from 3.37 to 7,307.
The DR-Series is designed with various sizes, ratios, and mounting styles, meeting requirements for output speed, power, radial load, axial load, operating time, and transmission methods.
General Specifications of the DR-Series DSK
Category | Catalog Information |
|---|---|
Series | DR-Series |
Type Name | Helical Geared Motors |
Transmission Type | Helical gear reducer |
Power | 0.4 – 160kW |
Gearbox Max Torque | 18,000Nm |
Ratio | 3.37 – 7,307 |
Main Mounting Style | Foot mounted, B5 flange mounted, input-shaft style |
Compatible Motor | IEC-Flange Motor |
Ambient Temperature | -10°C to 40°C |
Ambient Humidity | Below 80% |
Input Speed Note | If exceeding 1,800rpm, contact Technical Service Team |
General Features of DSK Geared Motors
The DSK DX-Series catalog highlights the following general features:
1. Various Size, Wide Ratio
DSK offers various sizes and ratios to meet different operating conditions. For the DR-Series, the ratio range is 3.37 – 7,307, providing users with multiple options for output speed.
2. Highly Compatible Style
The DR/DF/DK/DS-Series are designed with European standards and high compatibility. All products can be assembled with IEC-Flange Motors.
3. Low Noise, Quiet Operation
The catalog states that noise and vibration are reduced through a low-noise design, utilizing high-precision gears and gear cases.
4. Assemble with IEC-Flange Motor
All products in the series can be assembled with IEC-Flange Motors, which is crucial for motor selection, replacement, or configuring drive systems according to IEC standards.
Main Types of DR-Series DSK
According to the catalog, the DR-Series includes 3 main types:
1. DR..7 Type
DR..7 Type is a two-stage or three-stage foot mounted helical gear reducer. This type is suitable for mechanical designs requiring the gear reducer to be fixed on a machine base or mounting frame.
Features:
- Type: DR..7
- Structure: Two-stage or three-stage
- Reduction Type: Helical gear reducer
- Mounting: Foot mounted
2. DRF..7 Type
DRF..7 Type is a two-stage or three-stage B5 flange mounted helical gear reducer, suitable for designs requiring connection via a B5 flange.
Features:
- Type: DRF..7
- Structure: Two-stage or three-stage
- Reduction Type: Helical gear reducer
- Mounting: B5 flange mounted
3. DRS..7 Type
DRS..7 Type is a two-stage or three-stage foot mounted helical gear reducer – input-shaft style, also noted as Line Power Type.
Features:
- Type: DRS..7
- Structure: Two-stage or three-stage
- Reduction Type: Helical gear reducer
- Mounting: Foot mounted
- Input Type: Input-shaft style
- Note: Line Power Type
How to Read the DR-Series DSK Model Code
The DSK catalog presents the DR-Series model code structure as follows:
DR 87 - 41.74 / 2.2kW - 380V - 60Hz - (-) / AC-B
Component | Meaning |
|---|---|
DR | Type |
87 | Frame No |
41.74 | Ratio |
2.2kW | Motor Capacity |
380V | Voltage |
60Hz | Frequency |
(-) | Motor Option |
AC-B | Brake Option |
Examples of Model Codes
Example 1: DRF57-43.3/1.5kW-2/3V-60Hz(INV)/DC-B
Component | Explanation |
|---|---|
DRF57 | DRF-Series, frame 57 |
43.3 | Ratio |
1.5kW | Motor capacity |
2/3V | Voltage |
60Hz | Frequency |
INV | Motor option – for Inverter (VFD) |
DC-B | DC brake |
Example 2: DR77-113.56/2.2kW-2/3V-50Hz/AC-B(HL)
Component | Explanation |
|---|---|
DR77 | DR-Series, frame 77 |
113.56 | Ratio |
2.2kW | Motor capacity |
2/3V | Voltage |
50Hz | Frequency |
AC-B | AC brake |
HL | Hand lever brake |
DSK Geared Motor Options
Symbol | Option Name |
|---|---|
T | Torque Arm |
INV | Use for Inverter (VFD) |
HL | Hand Lever Brake |
AF | Axial Fan |
EN | Encoder |
AC-B | AC Brake |
DC-B | DC Brake |
INV – Use for Inverter (VFD) is the option for motor configurations used with a VFD. When controlling speed via a VFD, ensure the correct option code is selected according to the catalog and system technical requirements.
DR-Series Power Range
The DR-Series catalog presents technical specifications for each motor power level, ranging from 0.4kW to 160kW. These tables provide data on motor capacity, type, ratio, output speed, output torque, service factor, and overhung load for 60Hz and 50Hz frequencies.
Selection Guide for DR-Series DSK
The DSK catalog provides a selection process for geared motors based on input data, including: Usage, Required Speed, Required Power, Frequency of Starting and Stopping, Daily Usage Time, Radial/Axial Load, and Drive Method.
Steps for Selecting a Gear Reducer:
- Calculate the ratio: Based on the required output speed.
- Select motor power: Based on required output torque.
- Check moment of inertia: Especially for frequent start/stop applications.
- Determine service factor: Based on load type and operating frequency.
- Check overhung load: If the output shaft is connected to gears, sprockets, pulleys, or belts.
Service Factor in DSK Catalog
DSK classifies the load of the driven machine based on the mass acceleration factor. If the mass acceleration factor M > 10, it is recommended to contact the technical department.
Oil Inspection
Before operating the gear reducer, check the breather valve position and the oil level using the oil level plug to ensure proper lubrication.
Installation Notes
The DSK catalog provides installation notes, including shaft tolerances (ISO k6/m6 for solid shafts, ISO H7 for hollow shafts) and specific instructions for mounting solid or hollow shafts.
Mounting Position
The catalog specifies various mounting positions (M1, M2, M3, M4, M5, M6). Lubrication volume depends on the gear reducer size, mounting style, and mounting position.
Overhung Load
When the output shaft is connected to gears, sprockets, or pulleys, the overhung load must be checked against the catalog's allowable values based on the transmission device factor (fz).
Conclusion
DR-Series DSK – Helical Geared Motors are high-performance gear reducers from the DSK DX-Series. For proper selection, always refer to the catalog's technical specifications, including service factor, overhung load, and mounting position. For complex applications, please contact MDriveTech for expert support.
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Caption: DR-Series DSK Helical Geared Motors – gear reducer with power 0.4–160kW, ratio 3.37–7,307, torque up to 18,000Nm.
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