Middle-size butterfly mechanism with height adjustment, left/right locking handles, and spring tension control for office chairs.
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The Mechanism M1 is a middle-size butterfly mechanism designed for a wide range of office and task chairs. With a solid 2.0mm thickness and a 221×152mm mounting size, it offers stable and reliable performance. The up-and-down handle allows smooth height adjustment for improved seating ergonomics. This mechanism is ideal for restoring old chairs or upgrading mid-range office seating with dependable and responsive control.
Mechanism M1 includes left and right adjustment handles that control chassis locking, giving users better control over their sitting angle and tilt preferences. Additionally, the rotating spring box enables fine-tuning of spring tension, allowing users to set the desired resistance for reclining. This combination of features makes the M1 mechanism a durable and adaptable replacement solution for chair repair technicians, office maintenance teams, and furniture workshops.
