UNIVERSAL SPHERICAL TENSION ADAPTER (USTA)
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The USTA is a versatile device that connects a wide number of tension accessories to an Instron test machine, provides a smooth spherical seat, and requires few or no additional adapters. The USTA threads into a standard machine interface from the direction of the test space, connects to the machine thread on one end and directly to the accessory on the other, all in one compact device. The USTA consists of a sleeve component that is threaded for the test machine and a shank component that is threaded for tension accessories. The two components mate on matching spherical surfaces that allow flexibility during alignment and sustain the load during a test. A nut holds the assembly together and a polymer washer allows flexibility without looseness. UNIVERSAL SPHERICAL TENSION ADAPTERS Catalog Number
Description
Capacity
Upper/Lower Effective Length
kN
lbf
mm
in
Angle of Freedom
Accessory Interface
1
W-5551-A
Single-1 Spherical Coupling/1 Rigid Coupling Type IIm (M48 × 2 LH)
300
67,500
140
5.5
2
Type R4 Male (M36 × 4pRH) Type R3 Female (0.75 in × 10 RH)
2
W-5551-B
Dual-2 Spherical Couplings Type IIm (M48 × 2 LH)
300
67,500
140
5.5
2
Type R4 Male (M36 × 4pRH) Type R3 Female (0.75 in × 10 RH)
W-5551-G
Single-1 Spherical Coupling/1 Rigid Coupling Type IIm (M48 × 2 LH)
300
67,500
101.6
4.0
2
Type R4 Male (M36 × 4pRH) Type R3 Female (0.75 in × 10 RH)
W-5551-H
Single-1 Spherical Coupling/1 Rigid Coupling Type Dm (M48 × 2 LH)
300
67,500
172.7
6.8
2
Type R4 Male (M36 × 4pRH) Type R3 Female (0.75 in × 10 RH)
W-5552-A
Single-1 Spherical Coupling/1 Rigid Coupling Type IIAm (M72 × 3 LH)
600
135,000
129
5.06
3
Type II Male (M48 × 2pRH) Type R3 Female (0.75 in × 10 RH)
W-5552-B
Dual-2 Spherical Couplings Type IIAm (M72 × 3 LH)
600
135,000
129
5.06
3
Type II Male (M48 × 2pRH) Type R3 Female (0.75 in × 10 RH)
W-5552-E
Single-1 Spherical Coupling /1 Rigid Coupling Type IIm (M48 × 2 LH)
400
90,000
98.5
3.88
2
Type RIIm (M48 × 2 RH) Type R3f (0.75 – 10 inch RH)
W-5552-F
Dual-2 Spherical Couplings Type IIm (M48 × 2 LH)
400
90,000
98.5
3.88
2
Type RIIm (M48 × 2 RH) Type R3f (0.75 – 10 inch RH)
W-5554-A
Dual-2 Spherical Couplings, 1-Adapter Flange, Hardware M100 × 4p LH
1,500
337,500
191
7.5
3
Type IIA Male (M72 × 3pRH) Type R4 Female (M36 × 4pRH)
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