LiftMaster K32-50251 Q248 40:1 Gear Reducer for HCT Overhead Gate Operators
The LiftMaster K32-50251 is a 40:1 replacement gear reducer kit commonly referenced as Q248. It is used in compatible HCT Series overhead gate operators manufactured after 1999 and in related Elite Hercules overhead gate operator references where Q248 is listed. The reducer is a drivetrain component, not an electronic control part.
In an overhead gate operator, the gear reducer helps control motor output so the operator can move the gate at the proper speed and torque. The 40:1 ratio and HCT post-1999 application are important fitment details. Other LiftMaster reducers may share a similar shape or mounting concept but use a different ratio, shaft arrangement, or operator family.
Gear reducer wear often happens gradually. Customers may notice grinding, rough travel, hesitation, oil leakage, or excess play in the drivetrain. The reducer should be replaced only after the gate balance, hinges, drive chain, sprockets, bearings, and operator mounting have been inspected so the new reducer is not forced to compensate for a mechanical problem.
Compatible With
Confirmed and commonly referenced compatible applications include HCT overhead gate operators and Elite Hercules overhead gate operator references where K32-50251 or Q248 is listed.
- LiftMaster HCT Series overhead gate operators manufactured after 1999
- Elite HCT overhead gate operator references manufactured after 1999
- Elite Hercules overhead gate operator references where Q248 is shown
- Post-2/99 HCT applications using the 40:1 gear reducer
- Overhead gate operator drive assemblies requiring K32-50251
- Applications using the Q248 40:1 reducer only when confirmed by the parts diagram
Keep this part separate from K32-50225 / Q212, K32-50091 / Q015, and other 30:1 gear reducers used in different operator families.
Also Known As / Related Part Numbers
- K32-50251
- 32-50251
- Q248
- Elite Q248
- 40:1 gear reducer
- HCT gear reducer
- Hercules gear reducer
- Post 2/99 HCT reducer
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster |
| Product Type | Gear reducer kit |
| Part Number | K32-50251 |
| Ratio | 40:1 |
| Application | HCT overhead gate operator drivetrain |
| Compatible Operator Type | Overhead gate operator |
| Common Models | HCT Series manufactured after 1999 |
| Related Numbers | Q248, 32-50251 |
| Notes | Verify post-1999 HCT application before ordering |
Technician Note
The HCT production date matters. If the operator is an older pre-1999 unit or has had major drive repairs before, compare the original reducer and parts diagram carefully before ordering.
Before Ordering
- Confirm the operator is an HCT or diagram-confirmed Hercules overhead operator.
- Confirm post-1999 production where required.
- Match the Q248 or K32-50251 reference.
- Compare reducer ratio, shaft layout, and mounting pattern.
- Inspect related drive components before installing the new reducer.
Professional Advisory
Overhead gate operator drivetrain work can involve heavy moving equipment. Secure the gate, disconnect power, and have final limit, force, and safety checks performed by a qualified technician.
Product Questions & Answers
What is K32-50251 used on?
It is used on compatible LiftMaster HCT Series overhead gate operators manufactured after 1999 and related Elite Hercules references where Q248 is listed.
Is Q248 the same as K32-50251?
Yes, Q248 is the commonly referenced related or legacy number for this 40:1 gear reducer.
Can it replace a 30:1 reducer?
No. This is a 40:1 HCT reducer. Do not substitute it for 30:1 reducers used in other gate operator families.
Why does the production date matter?
HCT service parts can vary by generation, and references commonly identify this reducer for post-1999 units.
What should be inspected with the reducer?
Check drive chain, sprockets, bearings, operator mounting, gate movement, and any signs of overload or misalignment.
