NORD Zeitmaschine – CROSSNROLL Automatic Steel 44,7 mm Collection 2018
MODEL CROSSNROLL
The name CROSSNROLL borne by the new NORD Zeitmaschine watch is composed in part from the word CROSS, which describes that the hand runs on a cross-shaped minute-track.
The tip of the minute hand is mounted on a slide, which rolls back and forth on the hand platform, hence the word ROLL in the name of the watch.
Click, to see the large size. ▶ BIG FOTO
The name CROSSNROLL borne by the new NORD Zeitmaschine watch is composed in part from the word CROSS, which describes that the hand runs on a cross-shaped minute-track.
The tip of the minute hand is mounted on a slide, which rolls back and forth on the hand platform, hence the word ROLL in the name of the watch.
Click, to see the large size. ▶ BIG FOTO
28 rubies and 18 precision ball bearings are integrated in the NORD Zeitmaschine CROSSNROLL movement, of which 14 ball bearings are mounted in the hand assembly alone. Others are found on the winding rotor and the hour indicator.
- Patented Hour indicator:
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The hour disc itself is driven via mechanically driven cogs, independent of the swivel arm. This hour indicator, for which a patent is pending (N° EP18405009.4 and CH252/18) , facilitates the hour indicator disc being in any geographically undefined position over the dial, as a result of the movement of the wrist on which the watch is fastened, and the resultant gravitation. Irrespective of the position of the swivel arm with hour indicator, the red arrow on the hour indicator always points to the correct hour of the day, aligned with the longitudinal axis of the watch case.
Click, to see the large size. ▶ BIG FOTO
- Display of the hours in conjunction with hour indices:
Click, to see the large size. ▶ BIG FOTO
- Minutes:
Click, to see the large size. ▶ BIG FOTO
In a level position, no gravitational forces act on the pointer slide with pointer tip and the two counterweights. However, gravitational forces act on the pointer slide with pointer tip and counterweights in all other possible watch positions. At all times and in every possible position of the hand assembly, the acting forces mutually counteract each other. In order to achieve all these characteristics, it was necessary to find a solution that took multiple factors into consideration.
Click, to see the large size. ▶ FOTO
- Was it necessary to work with a number of different materials such as steel, brass, aluminium, titanium, platinum etc. and their varying densities.
- Must all pivot points and lever lengths be calculated precisely.
- Additionally, must the volumes of the individual components be precisely tailored to each other. The use of 18 ball bearings in total facilitates a mechanism with maximum precision and minimal friction.
Many individual parts of the hand assembly consist of very light materials such as aluminium and titanium. However, in order to achieve the centre of gravity always lying directly above the central pivot point, it was also necessary to use one of the heaviest metals. As such, a balancing weight produced from solid platinum (density 20.7) is mounted on the platform in the front area beneath the pointer tip. This solid platinum weight balances out the somewhat larger and heavier structure at the lower end of the hand assembly.
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Technical Specifications
Collection: FCROSSNROLL
Model : V1Model : V2
MOVEMENT
Caliber NORD N5
28 ruby jewels and 18 integrated precision micro ball bearings.
Minutes: by a complicated hand assembly where 14 ball bearings are mounted in and which runs on a cross-shaped minute-track.
Hours: via a swivel arm on which the hour indicator disc is mounted.
The swivel arm has no mechanical drive and only starts moving due to gravitation, effected through a change in the position of the wrist on which the watch is fastened.
The hour disc itself is driven via mechanically driven cogs, independent of the swivel arm.
Automatic winding, driven by a symmetrical 360° rotor
28,800 vibrations per hour / power reserve to 42 h
CASE
Stainless steel / bezel and sapphire crystal back, secured with 8 screws.
Crown with double o-ring seals.
Diameter 44,7 mm / height 15,8 mm (17,2 over the domed glass) / weight 110 grams
GLASSES top : sapphire crystaL double- curved / both sides anti reflected
bottom : sapphire crystal flat
PRICE: 18`700 CHF (excl. Tax)
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www.Nord-Zeitmaschine.ch
