LiftMaster JTW772 UHMW Jamb-Track Wheel — 2.75-Inch Designation

The LiftMaster JTW772 is the jamb-track wheel listed with a 2.75-inch designation and UHMW material description. The supplier cross-reference identifies KJTW772 as the corresponding ordering form. Select the wheel against the actual jamb-track assembly and full fitting requirements rather than assume that the stated wheel size proves compatibility with every track, shaft or powered gate arrangement. Select the replacement by the complete part number and the installed equipment configuration. A similar photograph or a shared LiftMaster brand name does not establish interchangeability. Confirm the applicable service drawing before ordering so the repair addresses the correct component and its related mounting, connection and operating requirements.

Compatibility — Models, Versions and Exclusions

Identify the Assembly and Plan the Repair

Inspect the track, wheel path and supporting attachment before selecting a replacement. A worn roller may reflect a damaged track, poor alignment or an unsuitable support arrangement. Confirm the full wheel profile and mating dimensions with the supplier, including any details not stated in the catalog description. The UHMW designation does not establish an unlisted bearing type or load rating.

Support the moving assembly as required before removing a load-carrying wheel. Have qualified personnel confirm the approved installation and retention method for the actual track system. Do not infer that a shaft, bearing, spacer or axle is included simply because one appears in a complete assembly illustration. After service, verify free movement, retention, clearances and the required protection functions where the assembly is powered.

Compare the replacement with the installed service arrangement before dismantling the equipment. Photograph the part’s location and record the complete model and visible service numbers. Inspect the surrounding attachment points and mating components for wear, impact damage or misalignment. Replacing one worn item will not correct a damaged support or another component that continues to impose abnormal loads on the repaired assembly.

Specifications and Product Identification

Before Ordering

• Identify the complete jamb-track assembly and old wheel.
• Confirm JTW772 / KJTW772 and the 2.75-inch designation.
• Verify bore, width, profile and mounting requirements.
• Inspect track damage and confirm current supplied pieces.

Package Contents and Separate Requirements

This offer identifies the UHMW jamb-track wheel. A complete track, axle, shaft, bearing assembly, mounting bracket, spacers and powered operator are not established as included. Confirm the current wheel package and exact mating dimensions before ordering separate attachment or support components.

Safety Warnings — Read Before Installation or Service

• WARNING: A moving gate and exposed uhmw jamb-track wheel — 2.75-inch designation can cause serious injury. Installation and service require a qualified gate-systems technician.
• Isolate AC power, batteries and any solar supply as applicable, and secure the gate against unexpected movement before work begins.
• Keep people clear of the gate and drive during supervised testing. Never bypass required entrapment-protection devices or increase force to overcome a mechanical fault.
• Restore all covers and guards, then verify travel endpoints, reversal and every required safety device before returning the gate to normal operation.

Related Products and Important Differences

• LMRRUL monitored photo eye — a separate protection option only where the exact operator and control revision approve it; not a universal legacy retrofit.
• LMWEKITU monitored wireless edge kit — a separate edge communication system for approved controls and resistive edges; not a replacement for this mechanical or electrical service part.

Frequently Asked Questions

Is KJTW772 a related ordering form?

The supplier listing cross-references that form to JTW772; confirm the current exact service match.

Does 2.75 inches specify every dimension?

No. Verify width, bore, profile and attachment as well as the published size designation.

Is a load rating stated here?

No unverified capacity is claimed. Obtain the approved rating for the actual track application.

Will a new wheel correct a bent track?

No. Inspect and correct track and support damage so the replacement can operate in its intended arrangement.

Need Help Confirming the Right Product?

Contact Garage-DoorParts.com before ordering. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.