Product Categories
Select a motor type to view specifications, pricing, and available models for your application.
Why Source From Us
Six reasons procurement teams and OEM builders choose Korea Cyclo Gear Reducer Co., Ltd.
Factory-Direct Pricing
No distributor markup. You buy at the same price OEM builders pay — typically 30–50% below European brands for equivalent IEC specifications.
7–15 Day Delivery to Korea
Standard models ship from our Gyeonggi-do warehouse. Non-standard voltages and large frames ship from the production facility within 15–20 working days.
IE2 Through IE4 Range
Full efficiency spectrum from cost-effective IE2 replacement motors to IE4 super-premium units — the widest range from a single supplier in the Korean market.
Full Certification Package
ISO 9001:2015, CE, CCC. Explosion-proof models carry Ex d IIB T4 certification. KCs marking arranged on request. All test reports ship digitally before the motor.
Engineering Support
Send your old motor nameplate photo — our team confirms the exact replacement model within one business day. Custom shaft, voltage, and mounting options available.
Spare Parts Depot in Korea
Bearings, fan covers, brake discs, and terminal components stocked locally. Next-day dispatch for emergency repairs — no waiting for international shipping.
Understanding Motor Construction
Click any component name to learn its function. Every part is engineered for reliability and service life.
Three Phase Motor Structure (YVF2 Series)
1 Independent Cooling Fan
Externally powered axial fan maintaining airflow regardless of motor speed — essential for VFD operation.
2 Fan Cover (Cowl)
Directs cooling air over the housing fins; removable for maintenance access.
3 Fan Motor
Small single-phase motor driving the independent cooling fan at constant speed.
4 Rear End Shield
Non-drive end bracket housing the rear bearing and supporting the brake or fan assembly.
5 Rear Bearing
Deep-groove ball bearing (6205–6312) supporting the non-drive shaft end.
6 Bearing Inner Cover (Rear)
Seals grease in and contaminants out at the non-drive end.
7 Stator Core
Laminated silicon-steel stack pressed into the frame, carrying the three-phase winding slots.
8 Stator Winding
Copper coils (Class F, 155 °C) wound into slots; generates the rotating magnetic field.
9 Rotor Core
Laminated silicon-steel stack pressed onto the shaft, carrying the squirrel-cage bars.
10 Squirrel-Cage Rotor Bars
Die-cast aluminum bars short-circuited by end rings; produce torque via induced current.
11 Shaft
40Cr alloy steel, heat-treated; transmits torque from rotor to the driven load.
12 Frame (Housing)
Cast-iron ribbed housing providing structural support and heat dissipation surface.
13 Front End Shield
Drive-end bracket housing the front bearing and shaft exit seal.
14 Front Bearing
Deep-groove ball bearing supporting the drive-end shaft and axial thrust loads.
15 Bearing Inner Cover (Front)
Seals the drive-end bearing cavity; prevents grease leakage along the shaft.
16 Shaft Key
Parallel key transmitting torque from the shaft to the coupling or pulley.
17 Terminal Box Base
Cast housing on frame top; cable entry and wiring space for power connections.
18 Terminal Board
Insulated block with six studs (U1/V1/W1, U2/V2/W2) for star or delta connection.
19 Terminal Box Cover
Gasketed lid sealing the terminal box to IP54/IP55 protection level.
20 Eyebolt
Lifting point rated for the full motor weight; used during installation and removal.
21 Mounting Feet (Base)
Machined flat pads with bolt holes for B3 foot mounting to the baseplate.
22 Grounding Screw
Protective earth terminal on the frame exterior for safety grounding.
23 Nameplate
Stamped plate showing model, power, voltage, speed, and certification data.
24 Drain Plug
Threaded plug at the lowest point of the frame for condensation drainage.
Single Phase Motor Structure (JY Series)
The JY single-phase capacitor-start motor uses a centrifugal switch to disconnect the start winding at ~75% synchronous speed. Key differences from three-phase construction:
• Start capacitor provides the phase shift needed to create a rotating field from a single-phase supply
• Centrifugal switch mechanically disconnects the start winding at speed
• Main + auxiliary winding wound at 90° electrical displacement in the stator slots
• Housing, bearings, and shaft identical to the Y2 three-phase platform of the same frame size
Industrial Applications
Our motors power critical equipment across heavy industry, manufacturing, and infrastructure.
Pumps and Compressors
Cooling water circulation, process fluid transfer, and compressed air systems in chemical plants and refineries.
Conveyors and Material Handling
Belt conveyors, bucket elevators, and drag chains in mining, cement, and grain processing facilities.
Fans and Blowers
HVAC supply fans, industrial exhaust, and process ventilation in textile mills and food processing plants.
Machine Tools
Spindle drives, coolant pumps, and tool changers on CNC lathes, milling machines, and grinding equipment.
Cranes and Hoists
Bridge crane travel, trolley drives, and hoist motors with electromagnetic braking for load holding safety.
Packaging and Food Processing
Filling lines, labelers, carton sealers, and mixers — where precise speed control and washdown resistance are essential.
How to Select the Right Motor
Five parameters to confirm before ordering — get these right and the motor will fit mechanically, electrically, and thermally.
Output Power (kW)
Determine the mechanical load at the shaft — including safety margin and duty cycle derating. Oversizing by one frame is common practice for S3/S4 intermittent duty.
Speed and Pole Count
2-pole (3000 rpm), 4-pole (1500 rpm), 6-pole (1000 rpm), or 8-pole (750 rpm) at 50 Hz. Lower pole counts deliver higher speed; higher pole counts deliver higher torque per frame size.
Voltage and Frequency
Standard: 380 V / 50 Hz three-phase or 220 V / 60 Hz single-phase. Non-standard voltages (415 V, 440 V, 660 V) available on request.
Mounting Arrangement
B3 (foot), B5 (flange), B14 (face), B35 (foot + flange), or B34 (foot + face). Check your existing baseplate or machine frame for the interface type.
Environment and Protection
Standard IP55 suits most indoor/outdoor applications. Hazardous areas require Ex d rated models. High-humidity or coastal environments benefit from tropical insulation treatment.
Efficiency Class
IE2 for cost-sensitive replacements, IE3 for new installations meeting current MEPS, or IE4 for maximum energy savings and fastest ROI.
Need help selecting? Send your old motor nameplate photo to [email protected] and our engineering team will confirm the exact replacement model within one business day.
About Korea Cyclo Gear Reducer Co., Ltd
Headquartered in Ansan-si, Gyeonggi-do, we manufacture and supply industrial motors, gearboxes, and power transmission components to factories across Korea and 35+ export markets worldwide. Our production facility operates under ISO 9001:2015 quality management with CE and CCC product certifications.
We serve procurement teams, maintenance engineers, and OEM equipment builders who need reliable, cost-effective motor solutions without the lead times and pricing premiums of multinational brands. Every motor ships with full test documentation, and our Korean spare-parts depot ensures next-day component delivery for emergency repairs.
What Our Customers Say
Real feedback from engineers and procurement teams across Korea.
"Replaced 12 aging YB2 motors at our Ulsan refinery. The YBX3 bolt pattern matched perfectly — zero baseplate modifications. Energy monitoring shows 8% lower consumption."
— Hwang D., Safety Manager, Gyeongsang-do
"The YEJA-132M-4 brake motor holds 5-ton loads without drift. We tested 10,000 cycles — positioning error stayed under 0.05°. Excellent value for the price."
— Lee J., Automation Engineer, Changwon
"Ordered 20 YE3 motors for our new packaging line. Delivery was 9 days to Incheon. Every unit passed incoming QC. Pricing was 35% below the European equivalent."
— Jang M., Procurement Director, Incheon
"Our VFD-driven YVF2 motors have been running a textile winding station for 14 months. Vibration readings stay well within ISO 10816 limits. The independent fan keeps them cool even at 10 Hz."
— Yoon S., Maintenance Supervisor, Daejeon
"We run 14 YBX3 explosion-proof motors across our paint manufacturing facility. The flameproof enclosure passed safety audit on first inspection. Non-stop grease lubrication on H160+ frames saves us two maintenance shutdowns per year."
— Park J., Maintenance Engineer, Daejeon
"Switched our entire conveyor line to YE4 IE4 motors — 22 units total. Energy monitoring confirmed a 12% reduction in power draw compared to the old IE2 units. The payback calculation came in under 18 months."
— Choi H., Energy Manager, Gyeonggi-do
Technical Resources and News
Engineering guides, selection tools, and industry updates for motor professionals.
GUIDE
IE2 vs IE3 vs IE4: Which Efficiency Class Saves You the Most?
Comparing payback periods and lifecycle costs across three efficiency tiers for Korean industrial applications.
GUIDE
Explosion Proof Motor Selection for Korean Refineries
Zone classification, gas group matching, and temperature class selection — a practical walkthrough.
NEWS
K-ETS Carbon Credit Opportunities for Motor Upgrades
How Korean facilities can claim emissions trading credits when replacing IE1 motors with IE3 or IE4 equivalents.
