Shaft Rod Tester

The mandrel bend tester is used to evaluate the flexibility of coatings. Its principle involves bending coated test panels around mandrels of different diameters and observing whether the surface cracks or peels off. Its purpose is to assess the material's resistance to deformation, and it is applied in quality control for coatings, inks, and plastic films.
Selection
When selecting a mandrel bending tester, it is essential to consider the mandrel specification range required by the test standards. The material should be corrosion-resistant and wear-resistant, and the structure must ensure the concentricity of the mandrel. Operational convenience, including stable sample clamping and bending actions, as well as compatibility with common substrate thicknesses, should also be taken into account.

Terms

Instruments

The bending diaMeter of putty film cracking peeling is tested by bending test plate, and the shaft Rod size is 50mm and 100mm. It is suitable for 0.2-0 mm thick tinplate substrate, and the operation is simple and reliable.

$ 228.00

Using 12 stainless steel shaft Rods with a diaMeter of 2-32mm, the 50mm wide test plate can be tested for 180 ° bending. The coating cracking situation is detected by decreasing the diaMeter of the shaft Rod, and the operation is simple and fast.

$ 506.00

Equipped with 8 kinds of diaMeter shaft Rods from 2 to 12mm, the 180 degree bending test can be completed in 1-3 seconds, and the anti-cracking performance of the paint film can be evaluated with the smallest shaft Rod diaMeter, which is easy to operate.

$ 231.00

Tapered shaft size Φ 3.1~ 38mm, shaft Rod size 2-32mm, anodic oxidation aluminum and stainless steel material, ergonomic design clamping device, bending arm large knob for easy operation, suitable for measuring plate thickness ≤ 0.8mm.

$ 4079.00

Equipped with 8 kinds of diaMeter shaft Rods of 2-12mm, made of wear-resistant stainless steel, easy to operate without assembly, each shaft Rod is engraved with diaMeter numbers for easy identification and use.

$ 228.00

Equipped with 13 shaft diaMeters from 2 to 32mm, it can accurately determine the cracking performance of coatings; support 1.0mm thickness sample testing, manual operation to ensure smooth and controllable bending process, meeting standard laboratory Environmental requirements.

$ 251.00

Equipped with seven steel shaft Rods of different diaMeters, it can simulate a variety of bending conditions, tested in 22 +/- 1 ° C environment, the shaft Rod length is 35 mm, which can accurately evaluate the film bending performance.

$ 190.00

The eccentric spherical shaft structure is used to ensure uniform mixing, and the 2800RPM speed is fixed to achieve fast vortex mixing. The TPU material countertop is wear-resistant and corrosion-resistant, and the Protection Rating reaches IP21, which is suitable for long-term stable operation.

$ 170.00

Equipped with seven steel shaft Rods of different diaMeters, the radius of curvature covers 0.5mm to 7.5mm, and the shaft Rod length is 50mm, which can accurately test the film flexibility under standard temperature Humidity conditions.

$ 131.00

The eccentric spherical shaft structure ensures uniform mixing, the fixed Rotation speed is 2800rpm to provide stable oscillation, the TPU material table is resistant to corrosion and wear, supports two operating Modes of pointing and continuous, and the volume is small and the noise is low.

$ 223.00

The cone shaft is used to test the anti-cracking performance of coatings with different curvatures. The size of the cone shaft is Φ 3.1~ 38mm, the volume is small and the weight is light, which is convenient for laboratory and field use.

$ 670.00

Adapted diaMeter 16mm formed Metering Rod, the total length of 2000mm, through the special structure to correct the straightness of the Rod body, to ensure stable rotation and full contact with the substrate, improve the thickness control accuracy of Spreader.

$ 590.00

Equipped with 7 different diaMeter shaft Rods, the length of the shaft Rod is 35mm, and the minimum radius of curvature is 0.5mm, which can accurately determine the film flexibility according to the standard requirements.

$ 122.00

The tapered shaft size range is 3.2~ 38mm, and the shaft length is 203mm, which can test the cracking and disbonding performance of the paint film under bending conditions, in line with international standards.

$ 238.00

Wet film thickness 22.9 microns, diaMeter 9.52 mm, the forming Rod uses an extrusion process to process continuous grooves, with no wire breakage and easy cleaning; the wire-wound Rod is based on the traditional principle, and there are differences in coating amount.

$ 167.00

Articles

Testing principle of the mandrel bending method for paint film flexibility tester
The shaft-rod bending method is a common technique for testing the flexibility of paint films. It involves bending a test panel coated with the paint film over shafts of different diameters to simulate the deformation of the coating under stress.
Paint Flexibility Tester for Measuring Bending Adaptability
The coating flexibility tester is a device used to assess whether a coating cracks or peels when bent. During testing, the coated sample is bent around mandrels of different diameters, and the surface condition is examined. The flexibility is evaluated based on the smallest mandrel diameter at which no cracking occurs.
Cone Bend Test Evaluates the Ultimate Deformation of High-Elasticity Coatings
This article introduces the use of a conical mandrel bend test to evaluate the ultimate deformation capacity of highly elastic coatings. The test involves bending a coated sample around a conical mandrel of specific diameters and observing the minimum mandrel diameter at which the coating cracks or peels off, thereby assessing the material's ability to withstand deformation.
Complete Guide to Methods for Determining the Flexibility of Paint Films
This article systematically outlines the core methods for determining the flexibility of paint films, including the mandrel bending test based on GB/T 1731, the cylindrical mandrel bending method according to GB/T 6742, and the conical mandrel bending method specified in GB/T 11185, providing a detailed explanation of the technical principles of each method.