LiftMaster K80-206-10 Thin Spacer / Shim Washer — Verify Exact Dimensions

The LiftMaster K80-206-10 is the thin spacer or shim-washer service reference associated with 80-206-10 in commercial operator shaft assemblies. The supplied title gives a one-inch by 1/32-inch description, while a manufacturer shaft-kit sheet lists different complete dimensions. Confirm the current replacement measurements before ordering; do not infer inside diameter, outside diameter or thickness from the abbreviated source title. 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

A thin spacer controls a specific position or clearance within the shaft assembly. Record the location and prescribed stack arrangement before service. An ordinary washer that fits over the shaft may still have the wrong thickness or outside diameter and change the intended clearance.

The abbreviated supplier title conflicts with a more detailed manufacturer shaft-kit description, so resolve the current dimensions before purchase. Provide the exact service drawing and existing spacer measurements where possible. Do not change the number or thickness of shims to conceal worn bearings, damaged supports or an incorrectly assembled shaft.

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 exact shaft assembly and spacer callout.
• Resolve inside diameter, outside diameter and thickness.
• Record the prescribed number and stack position.
• Inspect adjoining shaft and bearing parts for wear.

Package Contents and Separate Requirements

This offer identifies the thin spacer service item. Confirm the current piece quantity and full dimensions. A complete shaft kit, bearing, sprocket, key, retention set and thicker spacer are not established as included; the correct shim stack must follow the actual equipment service information.

Safety Warnings — Read Before Installation or Service

• WARNING: A moving commercial door and exposed thin spacer / shim washer — verify exact dimensions can cause serious injury or death. Have a trained door-systems technician perform installation and service.
• Disconnect mains power and any battery backup before mechanical work or wiring. Secure the door against unexpected movement as directed by its manufacturer.
• Do not work on springs, cables or counterbalance components without appropriate training. Never bypass safety sensors or increase force to overcome binding.
• Restore guards and complete the model-specific travel, reversal and protection-device tests before returning the door to normal operation.

Related Products and Important Differences

• CPS-U monitored photo eyes — separate protection devices for approved commercial-door controls; match the operator and environment.
• TDC12X1BMC MAXUM trolley operator — a complete-operator comparison, not evidence that this legacy service part fits MAXUM.

Frequently Asked Questions

Does the short title establish all dimensions?

No. Resolve ID, OD and thickness against the current approved part because the researched descriptions differ.

Can several ordinary washers replace it?

Do not improvise the stack. Use the specified spacer and prescribed clearance arrangement.

Does it repair a worn bearing?

No. A shim cannot substitute for repairing worn shaft support or an incorrectly assembled mechanism.

Are multiple spacers included?

No unverified quantity is claimed. The number used in a shaft-kit drawing does not establish the individual replacement-package count.

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.