Liftmaster K32-35814, GEAR REDUCER, 30:1
The LiftMaster K32-35814 is a 30:1 gear reducer assembly used in select LiftMaster gate operator drive systems. The reducer is the mechanical gearbox that changes high-speed motor rotation into the slower, higher-torque output needed to move the gate smoothly and keep the operator speed within the expected range. This is not a cosmetic part and it should not be selected by appearance alone. Gear ratio, shaft arrangement, mounting location, and operator generation all matter. A worn reducer may show up as noisy operation, binding under load, delayed movement, leaking lubricant, excessive drivetrain play, or a gate that struggles even when the motor is running.
Features & Specifications
| Manufacturer | LiftMaster |
|---|
| Product Type | Gear reducer / gearbox assembly |
|---|
| Part Number | K32-35814 |
|---|
| Gear Ratio | 30:1 |
|---|
| Application | Gate operator drivetrain speed reduction and torque transfer |
|---|
| Compatible Operator Type | Select LiftMaster swing or slide gate operators where the parts diagram calls for K32-35814 |
|---|
| Notes | Match ratio, shaft layout, and mounting position before ordering |
|---|
Compatible With
Compatibility depends on the exact operator model, generation, gear ratio, shaft layout, mounting position, and original parts diagram. Use the list below as a practical fitment guide, not as a universal interchange list.
- Select LiftMaster CSW24V commercial swing gate operator applications when confirmed by parts diagram
- Select CSW24U, CSW24UL, CSW24VDC, and CSW24DC references where this 30:1 reducer is shown
- Some listings associate K32-35814 with RSL12U / RSL12UL slide gate applications; verify the original reducer and diagram before upload or order
- 24VDC gate operator drive systems requiring the exact K32-35814 30:1 gearbox
Also Known As / Related Part Numbers
- K32-35814
- 32-35814
- G3235814
- K32-35814-1 is related but should not be treated as the same part without confirming bottom-mount configuration
Technician Note
Because online references for K32-35814 are not perfectly consistent, verify the original gearbox tag and LiftMaster parts diagram before substituting it for any CSW, RSL, or other operator family.
Before Ordering
- Match the manufacturer part number on the original part or the official LiftMaster parts diagram.
- Confirm gear ratio, shaft size, mounting position, handing, voltage, or kit contents when those details apply.
- Inspect the surrounding chain, sprockets, bearings, clutch, brake, limit hardware, and mounting brackets for wear before replacing only one component.
- Do not substitute a similar-looking reducer, fuse, or clutch part unless the part number and operator diagram support the interchange.
Professional Advisory
Gate and commercial door operators can move heavy loads and may include high-voltage wiring, stored mechanical tension, or monitored safety circuits. Installation, adjustment, and diagnosis should be performed by a qualified gate or commercial door technician when the repair involves electrical components, drivetrain alignment, brake assemblies, or unsafe gate movement.
Product Questions & Answers
What does the K32-35814 gear reducer do?
It reduces motor speed and increases usable torque so the gate operator can move the gate at the correct pace without overloading the drive system.
Is K32-35814 the same as K32-35814-1?
They are related numbers, but the -1 version is often listed as a bottom-mount reducer. Do not assume they interchange unless the operator diagram confirms it.
What should be checked before replacing this reducer?
Check the original part number, gear ratio, shaft arrangement, mounting holes, chain alignment, and the condition of connected sprockets or bearings.
Can a noisy gate operator mean the reducer is bad?
Yes, gear noise, looseness, binding, lubricant leakage, or loss of torque can point to reducer wear, but chain, bearing, brake, or gate hardware problems can cause similar symptoms.
Should this part be installed by a technician?
Professional installation is recommended because drivetrain alignment, gate balance, and safety-device operation should be checked after replacement.
