Surface accuracy to DIN 876

Article number: -

Surface accuracy for marking out tables and surface plates in cast iron.

Constructional features
The underside of the measuring surface has to be provided with at least three support points. The design of the plate will be such as to allow the forces acting on the table to be directed towards the support points in order to minimise distortion.

Extra information:

Surface qualities:

DIN 876/III broad planed finish

DIN 876/II fine planed finish / scraped finish

DIN 876/I fine scraped

DIN 876/0 fine scraped with bluing

Flatness tolerance:

Measured at standard temperature of 20°C. Allowable variation of the measuring surface to a true plane in microns (µ) where L (mm) is the length of the longest side of the plate.

DIN 876/III = 40 + L: 25 = µm

DIN 876/II = 20 + L: 50 = µm

DIN 876/I = 10 + L: 100 = µm

DIN 876/0 = 4 + L: 250 = µm

Tolerantietabel:

Dimensions in µm.