F lexural F ixtures
Flexural test fixtures are a relatively simple solution for determining the strength and deformation properties of materials such as wood and timber products. Starrett can offer a variety of test fixtures and accessories for performing 3- and 4-point bend testing.
O peration A beam attaches to the force testing frame, typically using a clevis adapter. In 3-point bending tests, two anvils are arranged along the beam with the sample under test residing on top of the two anvils. Force is applied in a compression direction mid-way between the two anvils for a 3-point test. Instead of a single anvil pressing the mid-section of the sample, two anvils may be used to press down on the sample for a 4-point test.
T esting S tandards The following testing standards can be met using standard Starrett flexural testing fixtures:
• ASTM D143 • ASTM D1037 • ASTM D3037 • ISO 3133
Additional testing standards are supported. Contact your Starrett representative for more information.
B end 3 ALUMINUM • For general-purpose 3-point bend testing applications • Active Span Length is 4-150mm • Replaceable Top and Bottom Radii for 4- and 5-point applications
• Aluminum bar with anodized finish, Hardened Steel radii • Operating Temperatures 32° to 158°F (0° to 70°C)
Bending Fixtures
Load Capacity
Upper Radius
Lower Radius
Weight (each)
Clevis Type
Model No.
N
KGF 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250
LBF 550 550 550 550 550 550 550 550 550 550 550 550 550 550 550
in
mm in
mm lbs
kgs 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0
mm 15.9 15.9 15.9 15.9 15.9 15.9 15.9 15.9 15.9 15.9 15.9 15.9 15.9 15.9 15.9
Supply
BEND-3-UR1-LR1 2,500 BEND-3-UR1-LR2 2,500 BEND-3-UR1-LR3 2,500 BEND-3-UR15-LR1 2,500 BEND-3-UR15-LR2 2,500 BEND-3-UR15-LR3 2,500 BEND-3-UR2-LR1 2,500 BEND-3-UR2-LR2 2,500 BEND-3-UR2-LR3 2,500 BEND-3-UR3-LR1 2,500 BEND-3-UR3-LR2 2,500 BEND-3-UR3-LR3 2,500 BEND-3-UR5-LR1 2,500 BEND-3-UR5-LR2 2,500 BEND-3-UR5-LR3 2,500
0.04 0.04 0.04 0.06 0.06 0.06 0.08 0.08 0.08 0.12 0.12 0.12
1.0 1.0 1.0 1.5 1.5 1.5 2.0 2.0 2.0 3.0 3.0 3.0 5.0 5.0 5.0
0.06 / 0.1 1.5 / 2.5 4.5 0.08 / 0.2 2.0 / 5.0 4.5 0.13 / 0.2 3.2 / 5.0 4.5 0.06 / 0.1 1.5 / 2.5 4.5 0.08 / 0.2 2.0 / 5.0 4.5 0.13 / 0.2 3.2 / 5.0 4.5 0.06 / 0.1 1.5 / 2.5 4.5 0.08 / 0.2 2.0 / 5.0 4.5 0.13 / 0.2 3.2 / 5.0 4.5 0.06 / 0.1 1.5 / 2.5 4.5 0.08 / 0.2 2.0 / 5.0 4.5 0.13 / 0.2 3.2 / 5.0 4.5 0.06 / 0.1 1.5 / 2.5 4.5 0.08 / 0.2 2.0 / 5.0 4.5 0.13 / 0.2 3.2 / 5.0 4.5
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
0.2 0.2 0.2
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