The HUB9009 is a quartz calibre with a bi-axis tourbillon inspired rotating cage, used in replica Hublot Big Bang references where an open-dial tourbillon window with two-plane rotation is required as a visual element. Like the HUB9005, the movement is battery-powered and requires no winding — timekeeping is regulated by a quartz oscillator. The distinguishing characteristic of the HUB9009 is its bi-axis cage: the rotating assembly revolves on two independent planes simultaneously, producing a more complex visual motion than the single-axis rotation of the HUB9005. The cage operates independently from the quartz timekeeping circuit and provides no positional rate correction — its function is visual animation only.
In replica watches, the HUB9009 is specified for Big Bang references where the bi-axis tourbillon cage is a defined visual requirement of the reference being replicated — typically models where the original Hublot reference itself features a bi-axis or multi-axis tourbillon complication. It sits above the HUB9005 in the tourbillon inspired hierarchy: both are quartz calibres with no winding requirement, but the HUB9009 delivers the additional rotational axis that certain reference specifications require. Where single-axis rotation is sufficient, the HUB9005 remains the standard quartz tourbillon inspired specification.
In Practice
- The HUB9009 is battery-powered quartz — no winding or wrist motion is required to maintain power. Timekeeping is regulated by a quartz oscillator. Battery replacement is the only maintenance requirement for continued operation.
- Bi-axis rotation means the cage revolves on two independent planes simultaneously — typically a horizontal rotation visible through the dial combined with a perpendicular secondary rotation. This produces a compound motion that is visually distinct from the single-plane rotation of the HUB9005.
- Neither rotation axis is connected to the escapement or balance wheel. The bi-axis cage assembly is driven by an independent motor circuit — both rotational planes are decorative, and neither contributes to timekeeping accuracy or positional rate correction.
- The HUB9009 is specified only for references where bi-axis cage rotation is a defined visual requirement — typically Big Bang references replicating original Hublot models with multi-axis tourbillon complications. It is not a general-purpose upgrade over the HUB9005 for all tourbillon inspired references.
- Within the tourbillon inspired calibre range: the HUB6311 is manual wind with single-axis rotation; the HUB9005 is quartz with single-axis rotation; the HUB9009 is quartz with bi-axis rotation. Reference specification determines which calibre is appropriate — axis count and winding type are the two differentiating variables.
Related Terms
Tourbillon Inspired · HUB6311 Tourbillon Inspired · HUB9005 Inspired · Skeleton Dial · Quartz Movement
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For a full overview of movements used in replica watches — including how bi-axis tourbillon inspired calibres compare to other movement types — read: Replica Watch Movements Explained