No.236 GRAIN CRACKING TESTER

JIS K6557-10, (K6548)

No.236 LEATHER BALL-BURSTING TESTER

  • This tester is used to conduct ball bursting test on upper leather of shoes and other thin leather.
  • Attaching the surrounding area of the test specimen to the clamp, the operator is to apply load to the grain side of the test specimen and is to read the height and the load when the grain crack appears.

Specification

Specifications are subject to change without notice.

Test Sample

Diameter ø40 ± 5 mm

Clamp

Inside diameter ø25 ± 0.5 mm

Steel Ball

Diameter ø6 + 0.25 mm

Plunger Speed

Control by handwheel (standard speed 12 ± 3 mm/min)

Pressure Gauge

Max. 1.4 MPa (graduation 0.01 MPa), Max. 4.5 MPa (graduation 0.05 MPa)

Dial Indicator

Graduation 1/100 mm, stroke length max. 20 mm

Accessories

Plunger (for pushing the steel ball back inside the tester), zero reference plate

Dimensions and Weight (Approx.)

W545×D340×H360 mm, 25 kg

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