LiftMaster K07-50180 Collar, 3/8 Inch ID, Q156
The LiftMaster K07-50180 is a 3/8 inch inside-diameter collar used to hold position on a shaft in select commercial gate operator assemblies. Collars like this are small parts, but they are important for keeping limit, linkage, or drive components from walking out of position during operation. A worn, missing, or loose collar may allow the shaft assembly to shift, which can cause limit inconsistency, linkage movement, or additional wear on nearby parts. This collar should be matched by part number and inside diameter, not just by general size, because commercial gate operators may use several similar-looking collars in different locations.
Compatible With
- Select LiftMaster commercial slide gate operators and related Elite / OSCO industrial gate operator assemblies where the parts diagram calls for K07-50180 or Q156. Commonly used around limit switch, shaft, and drive assemblies that require a 3/8 inch inside-diameter collar.
Compatibility should be verified by the operator model number, original part number, and replacement-parts diagram. LiftMaster barrier and commercial gate operator parts often look similar across model families but may use different shafts, collars, hubs, link geometry, or mounting hardware.
Features & Specifications
| Manufacturer | LiftMaster / Chamberlain Group |
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| Product Type | Set-screw shaft collar |
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| Part Number | K07-50180 |
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| Also Known As | Q156 |
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| Inside Diameter | 3/8 inch |
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| Application | Shaft retention or positioning in select commercial slide gate operator assemblies |
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| Compatible Operator Type | Select LiftMaster slide gate and Elite / OSCO industrial gate operator assemblies |
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| Notes | Confirm shaft diameter and parts diagram location before ordering |
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Also Known As / Related Part Numbers
- K07-50180
- Q156
- 07-50180
- LiftMaster Q156
- 3/8 inch ID collar
- set screw shaft collar
Technician Note
Before replacing this part, check the surrounding mechanical assembly for looseness, worn pivot points, damaged shafts, missing set screws, bent linkage, or signs of a gate or arm impact. Replacing one worn part without correcting the cause can lead to repeat failure.
Before Ordering Checklist
- Match the manufacturer part number and any older Q/G/07-series number to the original part or parts diagram.
- Confirm the operator model, series, and mechanical assembly location before ordering.
- Inspect adjacent shafts, cranks, bearings, fasteners, and linkage hardware for damage or wear.
- Do not order by appearance only; similar LiftMaster mechanical parts may not interchange.
Important Ordering Warnings
- A collar that is too large or too small can slip, bind, or fail to retain the shaft correctly.
- Check the shaft for wear or scoring before replacing only the collar.
Professional Advisory
Mechanical gate and barrier operator repairs should be performed with the operator secured and power disconnected by a qualified gate technician. If the operator has impact damage, binding, unsafe movement, or high-voltage wiring exposure, have the full system inspected before returning it to service.
Product Q&A
What is the K07-50180 collar used for?
It is used to retain or position a 3/8 inch shaft in select LiftMaster commercial gate operator assemblies.
Is Q156 the same as K07-50180?
Yes, Q156 is commonly listed as an alternate or related number for the K07-50180 3/8 inch ID collar.
Which LiftMaster operators does it fit?
It is commonly associated with select LiftMaster commercial slide gate operators and related Elite / OSCO industrial gate assemblies where the parts diagram lists K07-50180 or Q156.
Can this collar fix limit travel problems?
It can help if a loose or missing collar is allowing a shaft or limit component to move, but limit switch condition and shaft alignment should also be checked.
Should I order by inside diameter only?
No. Match the part number, inside diameter, and parts diagram location because similar collars may not be interchangeable.
