Elite Q210 Liftmaster K75-50224 Gear Box Kit CSW200 CSW200U CSW200UL Gate Opener
The LiftMaster K75-50224 gearbox kit is a replacement gear reducer assembly used on select LiftMaster/Elite swing gate operators. This is the mechanical drive component that helps reduce motor speed and transfer torque to the gate operator output system. When the gearbox is worn or damaged, the operator may run but fail to move the gate correctly, make grinding noises, bind under load, leak oil, or show excessive shaft play.
This kit is commonly searched under Q210 and is associated with #70 gear reducer applications. It is most often tied to CSW200, CSW200U, and CSW200UL swing gate operators. Because the gearbox is part of the operator drive train, fitment must be verified by operator model, production date, mounting pattern, output shaft arrangement, and the original gearbox number.
Compatible With
- LiftMaster/Elite CSW200 swing gate operators when the parts diagram specifies K75-50224 or Q210
- LiftMaster/Elite CSW200U swing gate operators when the parts diagram specifies K75-50224 or Q210
- LiftMaster/Elite CSW200UL swing gate operators when the parts diagram specifies K75-50224 or Q210
- Commonly associated with CSW200 family commercial swing gate operators manufactured after 1997
- Some references mention RSW series use; verify by serial number and parts diagram before treating it as compatible
- Not intended for slide gate operators or unrelated swing operator gearbox assemblies
Features and Specifications
| Manufacturer | LiftMaster / Elite |
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| Product Type | Gearbox kit / gear reducer |
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| Part Number | K75-50224 |
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| Application | Swing gate operator drive train repair |
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| Compatible Operator Type | Select commercial swing gate operators |
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| Related Model Family | CSW200 / CSW200U / CSW200UL |
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| Also Known As | Q210 |
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| Gearbox Reference | #70 gear reducer |
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| Notes | Verify gearbox ratio, mounting, shaft, and operator generation |
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Also Known As / Related Part Numbers
- K75-50224
- Q210
- LiftMaster Q210
- Elite Q210
- K75-50224 gearbox
- K75-50224 gear box kit
- #70 gear reducer
Technician Note
Gearbox failure is often caused or accelerated by gate drag, hinge wear, poor alignment, hard stops, or an operator being forced to move a gate beyond its intended load. Check gate swing by hand before replacing the gearbox.
Before Ordering
- Confirm the operator model is CSW200, CSW200U, CSW200UL, or another model that lists this gearbox.
- Check the original gearbox tag or parts diagram for K75-50224 or Q210.
- Verify mounting pattern, shaft orientation, and gearbox ratio.
- Inspect gate hinges, stops, arms, and operator mounts for binding.
- Do not reuse damaged sprockets, keys, or hardware if they caused the gearbox failure.
Important Ordering Warnings
- Similar gear reducers may look alike but use different ratios or shaft configurations.
- A new gearbox can fail early if the gate is dragging or the operator is overloaded.
Professional Advisory
Swing gate gearbox replacement involves heavy moving gate parts and stored mechanical load. Secure the gate and disconnect power before service. A qualified gate technician should inspect high-cycle or heavy commercial gates.
Product Questions and Answers
What does the K75-50224 gearbox do?
It reduces motor speed and transfers torque through the swing gate operator drive system.
What models is K75-50224 commonly used with?
It is commonly listed for CSW200, CSW200U, and CSW200UL swing gate operators when the parts diagram calls for K75-50224 or Q210.
Is Q210 the same as K75-50224?
Q210 is a commonly used related reference for the K75-50224 gearbox kit.
Can this gearbox be used on slide gate operators?
No. This gearbox is associated with select swing gate operators, not slide gate operator drive assemblies.
What should be checked before replacing the gearbox?
Inspect gate hinges, gate balance, stops, mounting, sprockets, and drive hardware so the new gearbox is not damaged by an underlying mechanical problem.
