Axial PULLOUT Strength test of bone screws_Metallic Bone Screws

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Axial PULLOUT Strength test of bone screws

Introduction
Specification
Accessories
Standard
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The test specifies a test method for measuring the axial force required for the extraction or failure of a metal bone screw from a specified material.

Test Procedure:

1, The bone screw should be inserted into the test block as specified in the standard (design to ASTM F1839) at an insertion speed of 3 rpm for 20 mm or 60% of the thread length.

2, While the test block is secured to the base of the frame, the screw head shall be gripped and a tensile load shall be applied at a rate of 5 mm/min until the screw fails or releases from the test block.

Result:

Insertion Depth

Axial Pullout Strength

Torque measuring range	0-5N.m
Resolution	0.001N.m
Torque sensor accuracy	Less than 0.5%F.S.
Speed accuracy	±0.01mm/min
Axial force load cell	200N/1000N (fulfill axial pull-out test)
Load cell accuracy	Less than 0.5%F.S.
Load cell resolution	0.001N
Linear displacement sensor range	More than 50m
Displacement sensor accuracy level	Less than 0.5%F.S.
Displacement sensor resolution	0.01mm
Torsion angle sensor	99999 degrees
Torsional angle accuracy	±0.2 degree
Torsion speed	1r/min to 30r/min free adjusting
Effective travel	400±10mm (can be increased on demand)
The coaxiality of the two chucks	≤ 0.2mm
Standard Power	220V, 50HZ, 1 phase, 0.4Kw
Working system	MS Win10