Abstract: Method of assembly of a watch pivot device (100) or a watch mechanism (200) or a watch movement (300) or a timepiece (400), the watch pivot device (100) or the watch mechanism (200) or the watch movement (300) or the timepiece (400) comprising a pivot (1) and a bearing (2), the method comprising the following stages: (i) supplying the pivot (1); (ii) supplying the bearing (2); (iii) applying, to at least one surface (101, 102, 211, 221) of the pivot and/or of the bearing, a lubricant of which the kinematic viscosity at a temperature of 20° C. is greater than 1.5 St; and (iv) positioning the pivot in the bearing.

Abstract: Method of assembly of a watch pivot device (100) or a watch mechanism (200) or a watch movement (300) or a timepiece (400), the watch pivot device (100) or the watch mechanism (200) or the watch movement (300) or the timepiece (400) comprising a pivot (1) and a bearing (2), the method comprising the following stages: (i) supplying the pivot (1); (ii) supplying the bearing (2); (iii) applying, to at least one surface (101, 102, 211, 221) of the pivot and/or of the bearing, a lubricant of which the kinematic viscosity at a temperature of 20° C. is greater than 1.5 St; and (iv) positioning the pivot in the bearing.

Abstract: The disclosure includes a lubricant composition further including: (a) at least one synthetic base oil and optionally at least one additive and (b) carbon nanotubes, the composition having a weight percentage of carbon nanotubes (b) relative to the total amount of base oils (a) of the composition of between 0.15 and 3.50%, the ratio between the weight percentage of carbon nanotubes, and the apparent density of the powder of carbon nanotubes, expressed in g/1 and measured according to the standard ISO 60-ASTM D1895 being greater than 102.