NANOVEA

CR-8R

Advanced Coating Thickness Tester

NANOVEA coating quality control testing

Works well for

PVD & CVD
Paints & Lacquers
Plasma Spray Coatings
Anodic Oxidation Layers
Galvanic & Chemical Deposits

COATING THICKNESS CALCULATION

Coating Thickness Formula - NANOVEA Ball Crater

Advanced Ball Cratering Thickness Tester to measure coatings 0.1 to 50 microns

Simple, portable, precise thin film thickness calculation — NANOVEA CR-8R
Coating thickness tester shaft speed specification
SHAFT SPEED

50 - 4000 rpm

Coating thickness tester time range specification
TIME RANGE

1 - 10800 sec

Coating thickness tester ball specification
BALL

10 - 38.1 mm

Coating thickness tester touch speed specification
TOUCH SCREEN
Coating thickness tester sample size specification
DIMENSIONS

460 x 355 x 135 mm

Coating thickness tester compliant with EN 1071-2 and VDI 3198
STANDARD

EN 1071-2
ISO 26423

What is the NANOVEA CR-8R?

The NANOVEA CR-8R is a ball cratering coating thickness tester, also called a calotester, for coatings from 0.1 to 50 µm thick. A rotating ball with abrasive grinds a spherical crater through the coating into the substrate; measuring the crater's ring and inner diameter under a microscope gives the coating thickness, following ISO 26423.

Shaft speed is set from 50 to 4000 rpm and test time from 1 to 10 800 s on a touch screen, with balls from 10 to 38.1 mm in diameter. At 15 kg and 460 x 355 x 135 mm, it is simple, portable and precise.

Best for

  • PVD and CVD hard coatings
  • Paints and lacquers
  • Plasma spray coatings
  • Anodic oxidation layers
  • Galvanic and chemical deposits

CR-8R at a glance

Coating thickness range
0.1 to 50 µm
Method
Ball cratering (calotest)
Standard
ISO 26423
Shaft speed
50 to 4000 rpm
Time range
1 to 10 800 s
Ball diameter
10 to 38.1 mm
Weight
15 kg
Dimensions
460 x 355 x 135 mm

CR-8R specifications

CR-8R specifications

Coating thickness range0.1 to 50 µm
Shaft speed50 to 4000 rpm
Time range1 to 10 800 s
Ball diameter10 to 38.1 mm
ControlTouch screen
Weight15 kg
Dimensions460 x 355 x 135 mm
StandardsISO 26423; EN 1071-2

Specifications subject to change. Every NANOVEA instrument is built to order; ask for the configuration that fits your samples.

What the CR-8R measures

Standards

  • ISO 26423
  • EN 1071-2

Independent published research

NANOVEA instruments appear in 555 published studies on friction and wear, by researchers at universities and industrial laboratories worldwide.

All 555 studies →

CR-8R: frequently asked questions

How does ball cratering measure coating thickness?

A ball of known radius R rotates against the coated surface with an abrasive and wears a spherical crater through the coating into the substrate. Viewed from above, the crater shows the coating as a ring. With A and B the dimensions measured across the crater, the thickness is (A × B) / 2R.

What coating thicknesses can the CR-8R measure?

From 0.1 to 50 µm.

Which coatings is the CR-8R suited to?

PVD and CVD coatings, paints and lacquers, plasma spray coatings, anodic oxidation layers, and galvanic and chemical deposits.

Which standard does the CR-8R follow?

ISO 26423, the ball crater method for coating thickness.

Is ball cratering destructive?

Yes, it leaves a small crater at the test spot. For non-destructive thickness and step height measurement, NANOVEA's optical profilometers measure steps and transparent films without contact.