The UR-110 Technical Details

Dial Side
The architecture of the revolving satellite complication of the UR-110 has three levels of complexity: a central carousel providing the mechanism with stability and equilibrium; planetary gearing assuring the parallel rotation of the three hour satellites as they orbit the dial; and three counter-rotating hour modules - each comprising an hour satellite, minute hand and counter balance - mounted on a planetary gear. These three modules are in constant counter-rotation to counteract the direction of rotation of the central carousel. Small seconds, a Day/Night indicator and an Oil Change indicator complete the complications.

Back side
The automatic winding system of the UR-110 is regulated by fluid dynamics of dual air turbines. As long ago as the 18th century, clockmakers were using air friction to regulate the speed of chiming clocks, and their techniques evolved to become the preferred method of regulating the rate of chimes on minute-repeaters. With the UR-110, URWERK use the two turbines to minimize shocks when the uni-direction winding system is winding and minimize wear when the winding rotor is freewheeling in the opposite direction.

 

Technical Specifications

Model: URWERK UR-110

Case:
Case in Grade 5 titanium with bezel in 316L stainless steel
Dimensions: 47mm X 51mm X 16mm
Two position crown and crown lever.
Water resistance: 3 ATM

Movement:
Calibre :UR 9.01 mechanical, automatic winding
Balance: Monometallic
Jewels: 46
Frequency: 28,800v/h; 4Hz
Balance spring:  flat
Power: Single barrel
Winding system: uni-directional rotor regulated by double turbines
Finish: matting, circular graining and diamond-cuts

Functions:
Revolving satellite complication with rotating hour/minute modules mounted on planetary gears; Control Board featuring: Day/Night indicator; «Oil Change» alerting service intervals and small seconds. Automatic winding system regulated by dual air turbines

Dimensions: 47mm X 51mm X 16mm

Indications: hours by satellites; minutes by integrated hands; Oil Change indicator; Day/Night indicator; small seconds