Five finger scratch abrasion tester

The instrument is designed according to the following automotive standards (Ford BN 108-13; General GMN3943; DaimlerChrysler LP-463D-18-01),There are five touchpoints.

The instrument contains pneumatic and sample mounting transmission devices. The transmission device travels in a straight line and is controlled by a knob. Can be used for testing one or more sample passages. The electronic timer displays the speed, which can be controlled by changing the air pressure.

The instrument bracket supports five independent spline rods, which can load continuous vertical force on the grinding needle (the grinding needle is interchangeable, with a diameter of 1.0mm or 7.0mm and a semi-circular head). The handle of the bracket can control the height of its cantilever, and the five support brackets can move one or more cantilevers to an unobstructed place, so as not to touch the sample being tested.

Different weight blocks are placed at the upper end of the cantilever to ensure that the force acting on the sample surface is of standard size. Each set of instruments contains weights of 2N, 3N, 4N, 5N, 6N, 7N, 10N, 15N, and 20N. In addition, weight blocks of 8N, 13N, 18N, and 25N can also be purchased. .

Although flat samples with a thickness of less than 22mm can usually be measured, the premise is that the edges of the sample should not be too thick, the sample should not be too soft, or fixed well enough. The standard configuration includes a sample fixing device with a spring, which can be fixed at the edge of the sample stage for better maneuverability. For thicker samples, a 'movable' fastening clip can be selected.