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Samsung JC66-00806A Gear-Opc Dr 76/38/29 — main product image
Samsung JC66-00806A Gear-Opc Dr 76/38/29
Samsung JC66-00806A Gear-Opc Dr 76/38/29
Samsung JC66-00806A Gear-Opc Dr 76/38/29
Samsung

Samsung JC66-00806A Gear-Opc Dr 76/38/29

Samsung's genuine OPC drum gear keeps your printer's imaging cycle mechanically precise, preventing the skipped rotations and streaking that aftermarket parts introduce.

$4.84*
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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

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Overview

The Samsung JC66-00806A is the OPC drum drive gear — the mechanical interface between the printer's main motor drive train and the organic photoconductor drum assembly. In laser printing, the OPC drum must rotate at a tightly controlled rate relative to the paper transport speed; any slop or tooth wear in this gear introduces periodic velocity variation that manifests as horizontal banding at intervals equal to the drum circumference. This is a genuine OEM-authorized part, meaning it is produced to Samsung's original engineering specifications for tooth profile, material hardness, and shaft bore diameter — not a reverse-engineered facsimile.

This part is the correct solution when print quality defects are mechanically rooted rather than consumable-related — when replacing the drum or toner cartridge fails to resolve banding or when audible gear noise localizes to the drum carriage. It is suited for IT administrators managing fleets of Samsung laser printers who prefer component-level repair over full drum assembly replacement, and for repair technicians who need verified OEM sourcing for client work. Confirm model compatibility before ordering, as the broad "various Samsung models" classification requires cross-referencing your printer's service parts list.

Key Features

This is an O.E.M. Authorized part

Fits with various Samsung brand models

OEM part # JC66-00806A

Brand: Samsung

Specifications

Part Type
O.E.M. Authorized part
OEM Part Number
JC66-00806A
Brand
Samsung

Pros & Cons

👍 Pros

  • Genuine OEM-authorized construction ensures dimensional accuracy matching factory-installed tolerances, eliminating fitment play that causes premature re-wear.
  • Restores precise drum rotation synchronization, directly correcting banding and misregistration artifacts caused by gear tooth wear.
  • Sourced directly from Samsung's authorized parts chain, reducing the risk of counterfeit components that replicate appearance but not mechanical spec.
  • Lightweight replacement component that does not require full drum assembly swap, lowering repair cost and downtime.

👎 Cons

  • Compatibility is listed broadly as "various Samsung models" — no explicit model matrix is published in the listing, requiring separate verification before purchase.
  • This is a mechanical wear part only; it does not reset page counters or address toner/drum chip flags that may accompany print quality issues.
  • Installation requires partial disassembly of the drum carriage, which demands comfort with printer internals — not a tool-free swap.
  • No published MTBF or rated duty cycle data available for this specific gear, making proactive replacement scheduling difficult.

Frequently Asked Questions

This is an OEM-authorized part carrying Samsung part number JC66-00806A. It is manufactured to the same tolerances as the unit that shipped in your printer, not a third-party approximation.
The Gear-OPC drive gear transmits rotational force from the main drive train to the OPC (Organic Photo Conductor) drum. When this gear wears or cracks, the drum loses synchronization with the paper path, producing banding, misregistration, or complete feed failures.
The JC66-00806A is listed as compatible with various Samsung laser printer models. Cross-reference your printer's model number against Samsung's parts compatibility list before ordering, as "fits various models" covers a range and not every Samsung unit.
Because this is an OEM-authorized component carrying Samsung's own part number, installation does not constitute use of an unauthorized third-party part. Standard warranty terms apply, but confirm with Samsung support if your unit is still under coverage.
Visible symptoms specific to OPC gear wear include rhythmic horizontal banding at regular intervals across the page (corresponding to drum rotation cycles), grinding or clicking sounds from the drum carriage, and inconsistent toner density that persists after drum cleaning.

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