Yarn Package Hardness Tester

Accurate Yarn Package Hardness Tester with constant pressure design, curved face, and ball indentor ensures reliable readings for yarn density and quality control.

Measures yarn and bobbin hardness with 0–100 display range
Spring-loaded design ensures constant pressure and accurate results
Ideal for synthetic and natural fiber yarns

Description

The Yarn Package Hardness Tester is a precision instrument designed to measure the hardness of yarn packages and bobbins with exceptional accuracy. Featuring a spring-loaded outer ring, it ensures constant measuring pressure and eliminates operator-based inconsistencies. The ball-shaped indentor prevents bobbin damage, while the curved working face (55 mm radius) fits small bobbins perfectly. With a 0–100 hardness scale and easy-to-read display, this tester delivers consistent, repeatable results across various yarn types. Ideal for both synthetic and natural fiber bobbins, it provides reliable performance for quality control in textile manufacturing and laboratory applications.

Special Features

The spring-loaded outer ring assures a constant measuring pressure and eliminates false readings due to difference between operators
Ball shaped indentor prevents damage to bobbins
Working face slightly curved to fit on small bobbins, working face radius 55 mm
Adjustable Min./Max. indicator marks to highlight working range of the yarn package hardness tester HP-5
For bobbins with diameters over 400 mm use yarn package hardness tester HP-5-F with flat working face e.g. warping beams
Optionally available: Calibration certificate with calibration report

Standard Features

High repeatability
Easy to use
Display range 0 – 100 hardness graduation marks
Certificate of Compliance with the order 2.1 according EN 10204 is included

Specifications

Indentor: Ball Ø 5 mm
Area of application: For loosely wound bobbins of synthetic fibers and closely wound natural fibers, yarns and threads
Depth of indentation*: 0 – 2.5 mm
Test pressure**: Approx. 12.5 N
Measuring spring force*: 0.55 – 8.065 N
Display range: 0 – 100 hardness graduation marks
Scale diameter: 54 mm
Working face radius: 55 mm
Weight, net (gross): Approx. 300 g (500 g)
Dimensions: 50 x 58 x 110 mm (LxWxH)

Why Choose Yarn Package Hardness Tester

Choose the Yarn Package Hardness Tester for its accuracy, repeatability, and operator-independent performance. Its spring-loaded measuring system ensures consistent pressure during testing, minimizing human error and providing dependable hardness readings. The ball-shaped indentor and ergonomic curved face safeguard bobbins while maintaining high sensitivity for both loosely and tightly wound yarns. With a wide measurement range (0–100 hardness marks) and optional calibration certificate, this tester meets professional standards for textile production and research. Lightweight yet durable, it is easy to operate and ideal for use in quality control labs, yarn mills, and textile testing facilities. Designed for precision and reliability, it helps manufacturers maintain uniform yarn density and optimize production consistency.