Ths527 Wedge Grips Microtest English d2

Wedge Action Grips THS527

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Wedge Action Grips THS527: 20, 30, 50, 100kN MICROTEST

MICROTEST

MICROTEST, S.A. Instruments and Equipments for Materials Testing

(+34) 91 796 33 32 www.microtest-sa.com


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Description

Wedge grips are self-adjusting grips. The clamping

preload is applied to the sample by means of a

central thread. The wedge action enhances this hold

with minimum slippage by increasing the gripping

load as the force increases during the test.

The wedge grips are very well suited for flexible

samples, since they automatically re-tensioning and

thereby adapt to the sample thickness. The wedge

grips are symmetrical closing. Thus the sample is

automatically positioned in the pulling axis

Wedge action grips feature an open front design which facilitates easy loading of

large specimens. The standard THS527 series can accommodate round specimens

up to 17mm in diameter and flat specimens up to 30mm thick in forces from

10kN to 100kN.

The shape of the jaws can be V-face for round specimens or pyramid surface for flat

specimens. The vee faces used for round specimens by design have a reduced area

at the center, which compromises their ability to absorb high energy breaks without

fracture. This grip uses a split-vee face configuration which allows the break energy

to be dissipated without damaging the faces.

The jaws are easily interchangeable. The user only needs to remove the guiding

covers by loosening the knurling screws that secure them to the grip body and

replace the jaws without effort.

The lubrication of the jaw face carrier is through standard grease fitting.

Non-standard Versions

There is an adapted version to extend the temperature range of these grips to -

70°C to +250°C.

The special version Heavy Wedge grip model THS527-250-CA is intended for

250kN.

MNTH527-SS-100 Wedge Grips, are 100kN capacity and the main body is made

in stainless steel 17-4PH.


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Standard THS527 Models

Standard Jaw faces for THS527 (20 to 100kN): Delivery 1 set = 4 pieces

(*) These are the typical values. Other values for opening and clamping area are also possible.

Model THS527-20 THS527-30 THS527-50 THS527-100

Force Capacity 20 kN 30 kN 50 kN 100 kN

Body Phosphated Steel Phosphated Steel Phosphated Steel Phosphated Steel

Temperature

range

0°C - +130°C 0°C - +130°C 0°C - +130°C 0°C - +130°C

-70°C to 250°C (adapted version)

Nickel coating and Teflon knobs

Weight /head 5 kg 6 kg 16 kg 48 kg

Delivery 1 Pair of heads 1 Pair of heads 1 Pair of heads 1 Pair of heads

Ref. Model Surface Clamping Area

H x B

Opening width

(*)

Weight

/pair

THS527-20-BP Pyramid,

serrated 40 x 52 mm 0 – 10 mm 0,5 kg

THS527-20-BV V-Serrated 3 – 10 mm Ø 0,35 kg

THS527-50-BP17 Pyramid,

serrated 66x80 mm 0 – 17 mm 1 kg


serrated 66x80 mm 15 – 30 mm 1 kg


serrated 66-100 mm 0 – 17 mm 2 kg

THS527-50-BV V-Serrated 4 – 17 mm Ø 1 kg

THS527-100-BP Pyramid,

serrated 96-100 mm 0 – 16 mm

10-23mm

3 kg

THS527-100-BV V-Serrated 4 – 16 mm Ø

10 – 23 mm Ø

3 kg


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THS527 Standard Models Dimensions (mm)


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Special Model THS527-250-CA

THS527-250-CA wedge grip 1 pair 250 kN

Cardan joint only on top grip see drawing

Lower grip no cardan

THS527-250-BP30 Pyramid jaws for flat samples 0-30mm 1 set

THS527-250-BV30 special jaws for round samples 10-30 1 set

Grip without cardan:

Ths527 Wedge Grips Microtest English d2

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