Evaluating springback (softness) of enameled wires | SPRING ELONGATION TESTER / No.161

Overview of SPRING ELONGATION TESTER

This tester is used to evaluate the softness of enamel wire according to the spring elongation method.
One end of the testing coil is to be rolled to the mandrel and the other end attached to a weight which is placed on a supporting platform.
The platform will then go down at a constant speed and when 1 minute has passed after the weight had separated from the supporting platform, the operator is to detach the weight and leave the testing coil for another 1 minute.
The length difference of the coil before and after the test is to be noted as the spring elongation value.

Reference Standards

JIS (C3003), C3216-3, IEC-60851-3

Specification

Specifications are subject to change without notice.
Specimen	L1.2 m, Conductor Diameter φ0.25 to φ1.6 mm
Mandrel Rotation Speed	50 rpm
Mandrel Diameter	φ2.5 to φ16 mm (Conductor Diameter φ × 10)
Weight	(Specimen Cross Section × 700) g
Holder Stroke	Max. 780 mm
Holder Speed	50 mm/s
Timer	60 sec Count
Option	Safety Cover
Power Source	AC 100 V, 1-Phase, 5 A, 50/60 Hz
Dimensions/ Weight (Approx.)	W500 × D530 × H1,500 mm, 85 kg