KALIBER 102.2

CALIBRE 102.2

CALIBRE 102.2

THE PATENTED RECIPE.

機芯

機芯

持續的創新與完善是格羅斯曼傳統的組成部分。因此,年輕的格羅斯曼錶廠持續進行眾多自主開發。貝努動力儲存腕錶機芯採用貝努系列著名的經典100.2型導柱機芯,帶有2/3夾板、階梯式擺輪凸輪,以及格羅斯曼典型的微調螺絲。

它具有MORITZ GROSSMANN GLASHÜTTE I/SA品牌機芯的所有標誌性特徵與手工藝細節。此外,更增添了全新的格羅斯曼擺輪、經過進一步改進的格拉蘇蒂棘輪、按鈕式手動上鏈裝置,以及動力儲存顯示。

THE STRAP WINDER WITH SETTING CROWN

THE STRAP WINDER WITH SETTING CROWN

The power needed to tension the mainspring is built up with a winding stem that enters the case at 6 o‘clock. To assure that the strap comfortably hugs the wrist, both the winding stem and the strap bar on the opposite side are inclined inward by 22°. A special bevel gear pair establishes the connection between the inclined winding stem and the horizontally orientated movement. When the watch is being wound, the strap can deliver much more torque than a crown because it is easy to grasp. The energy is swiftly transmitted via a bevel gear to two wheel sets with a high-efficiency ratio. A backstop ratchet allows bidirectional winding. Only very few back-and-forth motions of the strap are needed to fully wind the watch. Inside the case, the movement was
turned by 30°, so the timesetting crown is positioned at 4 o‘clock. As before, the handsetting mechanism is activated by pulling the setting crown.

THE STOPWORK

THE STOPWORK

Since the winding stem could turn with the strap while the watch is being worn, the backstop tolerates a certain amount of deflection without causing the stop click to instantly block the stem. The backstop and the main stopwork are dimensioned such that the engagement of a pawl requires a rotation of at least 20°.

The ratchet wheel has only eight teeth, so the stopwork cannot be overloaded when very fast winding movements are performed. In the calibre 102.2, a mainspring with a bridle – commonplace in selfwinding watches – prevents damage that could be caused by excessive force. The bridle is pressed against the inside of the mainspring barrel and generates frictional torque that as a rule is 10% higher than the maximum torque of the spring. So when the mainspring is fully wound, turning the crown is met with resistance but it does not lurch.

THE OSCILLATOR WITH STOP SECONDS

THE OSCILLATOR WITH STOP SECONDS

The Grossmann balance, modified for the TEFNUT calibres, is clearly smaller than in the larger ATUM and BENU movements. It is designed for a high moment of inertia with minimal mass and beyond the mass and poising screws offers sufficient precision adjustment options.

The stop-seconds mechanism is activated when the setting crown is pulled. A spring firmly attached to the main plate presses against the safety roller and thus prevents inadvertent contact with the polished outer surface of the balance-wheel rim or maladjustment of the delicate poising screws. The spring is controlled by a linkage-type slide that for the strap winder is connected directly with the arresting spring and is thus uncoupled from the winding motion.

黃金套筒

黃金套筒

軸承寶石——白色藍寶石水晶——安裝於凸出的黃金套筒中。與所安裝的、分別由手工退火的鋼質螺絲一起,它們突顯於夾板表面上方。這一凸起式佈局以傳統格羅斯曼腕錶為藍本,由此可以拆卸並清潔單獨軸承寶石,而不會在組裝時對夾板造成傷害。

手工雕刻

手工雕刻

2/3夾板上的所有鐫刻,以及擒縱輪板和擺輪凸輪上的鐫刻都由手工完成。

技術規格

  • 機芯 102.2型自製機芯,手動上鏈,五方位調校
  • 零件 200個
  • 寶石 19顆寶石,其中3顆安裝在以螺絲固定的黃金套筒中
  • 擒縱系統 錨式擒縱
  • Oscillator Shock-resistant Grossmann balance with 4 inertia and 2 poising screws, Nivarox 1 balance spring
  • 擺輪 直徑:10.0毫米,振頻:21.600次/小時
  • 動力儲存 上滿鏈48小時
  • 功能 小時與分鐘顯示
  • Special features Shock-resistant balance with inertia and poising screws, impulse pin integrated in rim / flat balance spring / balance staff with integrated safety roller / index adjuster with Grossmann micrometer screw / plate movement with 3/5 plate, frame pillars, and separately removable clutch winding mechanism / frame parts in untreated German silver / raised gold chatons with pan-head screws / remodified Glashütte stopwork with backlash / mainspring barrel with bilateral jewel bearings for optimised power management / ARCAP train wheels / proprietary escapement with 18-tooth escape wheel
  • 機芯尺寸 直徑:26.0毫米,厚度:4.2 毫米