120W vs 140W vs 200W Right Angle Gear Motor Selection Guide
H1:120W vs 140W vs 200W gear motorIntroduction
Choosing the right right-angle gear motor for a conveyor, packaging machine, or automation system often comes down to three key decisions: power rating, output torque, and shaft type. The 104mm frame series from the 6GU platform offers three popular power levels — 120W, 140W, and 200W — each available with a hollow shaft (RC) or solid shaft (RT).
This guide compares these three models side by side, explains when to choose hollow vs solid shaft, and helps engineers and procurement teams specify the correct configuration with confidence.
Quick Comparison: 120W vs 140W vs 200W
| Parameter | 120W (6IK120GU) | 140W (6IK140GU) | 200W (6IK200GU) |
|---|---|---|---|
| Frame Size | 104 × 104mm | 104 × 104mm | 104 × 104mm |
| Gearbox | 6GU Right Angle | 6GU Right Angle | 6GU Right Angle |
| Motor Rated Torque (approx.) | ~0.62 N·m | ~0.99 N·m | ~1.41 N·m |
| Max Permissible Output Torque | 20 N·m | 20 N·m | 31 N·m |
| Gear Ratio Range | 3:1 – 200:1 | 3:1 – 300:1 | 3:1 – 300:1 |
| Hollow Shaft (RC) | Φ22mm bore | Φ22mm bore | Φ22mm bore |
| Solid Shaft (RT) | Φ20mm keyway | Φ20mm keyway | Φ20mm keyway |
| Voltage Options | 1PH 110V/220V, 3PH 220V/380V | 1PH 110V/220V, 3PH 220V/380V | 1PH 110V/220V, 3PH 220V/380V |
| Body Length (approx.) | 285mm | 285mm | 331mm |
| Weight (approx.) | 8.5kg | 8.5kg | 9.7kg |
| Typical Applications | Light-medium conveyors, labeling | Medium-duty mixers, packaging | Heavy conveyors, industrial mixers |
Typical applications of hollow shaft gear motors and solid shaft right angle motors
●Heavy duty belt and chain conveyors
●Industrial mixers and stirrers
●Packaging machinery with high torque requirements
●Automated Guided Vehicles (AGVs) and Material Handling Systems
●Food processing and pharmaceutical production lines
FAQ
Q1: Can I use a 140W motor instead of 120W without changing the gearbox?
A: Yes. Both use the same 6GU gearbox and 104mm frame, so they are mechanically interchangeable. Just verify torque and speed requirements.
Q2: What is the maximum torque of the 200W model?
A: Up to 31 N·m permissible output torque, depending on gear ratio and voltage.
Q3: Which shaft type is better for a conveyor?
A: Hollow shaft (RC) is often preferred for direct roller drive. Solid shaft (RT) is better for chain or belt drives with pulleys.
Q4: Are these motors available with brakes?
A: Yes. Add the “M” suffix for electromagnetic brake models.
Q5: Can I use a speed controller with these motors?
A: Single-phase speed-control versions (R suffix) can be paired with an external controller. Three-phase models require a VFD.