Axial Rod Bending Tester

The Mandrel Bend Tester evaluates the crack resistance of coatings, films, and similar materials by wrapping test specimens around mandrels of various diameters. The device bends the specimen at a constant speed while observing whether cracks or peeling occur on the surface. It is used in quality control for coatings, inks, and plastic films to verify material flexibility and adhesion.
Selection
When selecting, consider matching the sample thickness range with the mandrel diameter specifications, determine the test speed parameters based on the material type, choose a manual model for routine needs, and opt for an automatic model for batch testing. Ensure the fixture is compatible with different sample widths, account for the influence of ambient temperature and humidity by configuring a protective cover, and note that calibration cycles affect data accuracy.

Terms

Standards

Instruments

Equipped with 2 to 12mm eight diaMeter stainless steel cylindrical mandrel, in the form of hinged bending, in line with GB6742 standard, suitable for Coating bending performance testing.

$ 235.00

A bending angle is less than 45 degrees, can test 0.5~ 1.0mm Film thickness sample, flattening mechanism stroke is not less than 10mm, using crank lifting mechanism to achieve T-shaped bending test.

$ 912.00

The gear pair and crank lifting mechanism are used to achieve accurate bending, the first bending angle is less than 45 °, the flattening mechanism Travel ≥ 10mm, which can test 0.5-2 mm thickness plates and support OT to T bend test.

$ 485.00

The instrument is equipped with eight kinds of diaMeter stainless steel cylindrical mandrel, which adopts the form of hinge connection bending, which can accurately test the bending deformation of coatings under different diaMeters to ensure the test Reliability.

$ 251.00

The test bending angle is less than 45 degrees, suitable for steel plate thickness 0.5~ 1.0mm and Aluminum Panel thickness 0.5~ 2.0mm. The gear pair and crank lifting mechanism are used to achieve T-shaped bending, which is easy to operate.

$ 538.00

Can test 4 shoes at the same time, bending angle 0 °~ 90 ° adjustable, Test speed 0~ 140 times/min, with automatic return and LCD counter function.

$ 2018.00

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

Maximum load 100KN, suitable for bending testing of various materials, with high load-bearing capacity and Stability, to meet different testing requirements.

$ 616.00

With a bending angle of 135 degrees and a folding speed of 175 times per minute, it can apply a test load of 4.91N to 14.72N, and the automatic counting function accurately records the number of breaks, which is suitable for material durability testing.

$ 1463.00

It can measure three different angles at the same time, the angle range is adjustable from 1-92 °, the Measurement range is 0-10000mN, and it supports a variety of material tests with bending length and thickness 0.01-5 mm. It has automatic reset and self-Adjustment.

$ 2736.00

Using pure mechanical design, the coating performance is measured by conical mandrel bending test plate, the test plate size is 100mm × 180mm, the thickness is less than or equal to 0.8mm, and the operation is simple and reliable.

$ 240.00

Measurement range 0~ 500mN.m, span 5-50mm eight gear adjustable, angular velocity 0.5~ 1000 °/min adjustable, support self-calibrating and quick change Sensor, suitable for bending test of different resilience materials.

$ 2074.00

Support 0.1-1 steel plate and 0.1-2 Aluminum Panel test, can complete 0T to 1T multi-stage bending, equipped with pliers pressing device and tape adhesion inspection function, to meet the standard bending test process.

$ 782.00

It can test the cracking of the paint film after bending 180 degrees in 1-3 seconds, and the diaMeter range of the shaft Rod is 2-32mm. It is suitable for the test plate with a thickness of not more than 1.0mm. Quick evaluation of flexibility.

$ 280.00

With +/- 0.1% accuracy Sensor and 0.01mN resolution, it supports 1-92 ° bending angle adjustment and 0.5-50 °/sec angular speed control, with self-Adjustment and three independently adjustable test angles, suitable for 0.01-5 thickness materials.

$ 3268.00

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.