Checkline Textile Durometers

In spinning, winding, weaving, and dyeing operations, maintaining uniform winding density across yarn packages and consistent Shore A hardness across rubber nip rollers (spinning cots) is essential to preventing yarn breakage, uneven dye liquor penetration, and fabric tension defects. ABQ Industrial supplies specialized Textile Durometers from Checkline engineered with spring-loaded constant-pressure outer shells, contoured concave bases, and spherical or large-area indenters that eliminate operator pressing-force errors on curved and compressible surfaces.

F.A.Q.

How do I choose between a curved-base (HP-2.5, HP-5, HP-10) and a flat-base (HP-2.5F, HP-5F, HP-10F) Textile Durometer?

The choice depends on the outer diameter of your wound yarn package:

Curved-Base Models (HP-2.5, HP-5, HP-10): Engineered for standard cylindrical bobbins, cones, cheeses, and dye packages with diameters under 15 inches (380 mm). The contoured base cradles the curvature of the spool so the indenter enters perpendicular to the yarn layers.
Flat-Base Models (HP-2.5F, HP-5F, HP-10F): Designed for large yarn packages and warp beams with diameters over 15 inches (380 mm), or for testing flat-sided cakes and fabric stacks.

Why is winding density measurement critical for dye packages?

In package dyeing, dye liquor is pumped radially through the perforated dye tube and across the wound yarn layers. If a package is wound too tightly (high HP durometer reading), dye liquor channels around the dense zones and leaves light, undyed rings; if wound too loosely (low HP reading), the package can collapse or slough off during wet processing. Spot-checking packages with a Checkline HP Textile Durometer ensures uniform density from bobbin to bobbin before loading the dyeing kier.

Why does the Checkline HPSA-R Durometer use three different concave base radii (R20, R35, R55)?

When measuring Shore A hardness on cylindrical rubber nip rollers and spinning cots, a flat presser foot only touches along a narrow tangent line, allowing the gauge to tilt and under-read hardness. By matching the concave work-face radius of the Checkline HPSA-R (R20 for rollers up to 40 mm, R35 up to 70 mm, and R55 up to 110 mm) to your roller diameter, the outer shell seats squarely along the cylinder axis without rocking.

How do I verify the accuracy of flat-bottom and curved-bottom HP Textile Durometers?

Flat-base models (HP-5F, HP-10F) are verified using the 2-piece TBK-HP Test Block Kit, whereas curved-base models (HP-2.5, HP-5, HP-10) require the contoured HP-TB Test Block for Curved Bottom HP Durometers so the curved foot seats properly during verification.

Checkline HP Textile Durometer, Yarn Package Durometer Hardness Tester

$611.00

FREE Ground Shipping

About this item

Checkline HP Textile Durometer, Yarn Package Durometer Hardness Tester

Checkline HP Textile Durometer, Yarn Package Durometer Hardness Tester
Constant-pressure indicating system assures uniform test pressure eliminating false readings due to differences between operators
Warranty: One Year

View More Details

Checkline HPSA-R Durometer

$699.00

FREE Ground Shipping

About this item

Checkline HPSA-R Durometer

Checkline HPSA-R Durometer for Nip / Rubber Rollers and Cylindrical Materials
Operation is as easy as pressing the spring-loaded knurled aluminum shell down to the red line
Manufacturer: Checkline
Warranty: One Year

View More Details