Punkty mocujące - obliczanie długości gwintu

Oktober 2014

Manual winner profilift Lifting points with special length – how to calculate the length for order To calculate the necessary thread length (L): L = H + S + K + X H = Material height S = Thickness of the washer K = Height of the nut (depending on the thread size

of the screw) X = Excess length of the screw (twofold pitch of the screw) L max. = n max. (see catalogue) This info sheet is for pewag winner lifting points with special length, which are mounted in a through hole and are fixed by means of a washer and a nut. Washer and nut (crack tested) are included in the package, when a pewag winner lifting point with special length is ordered. This parts can also be ordered as spare parts (Order code “PLMS” in chapter “spare parts”).

H = material height

H n max.

S

This is the height at the position, where the lifting point will be screwed in.

K X

S = Thickness of washer K = Height of nut X = 2 x Pitch of thread This dimensions can be found at the end of the catalogue in the section “spare parts”: Look for the thread you need and find the dimensions in column „h“ and „h1“

Manual Lifting points with special length – how to calculate the length for order

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Oktober 2014

This dimensions can be found at the beginning of the catalogue in the section “Overview”: Look for the thread you need and find the dimensions in column„Thread“. The pitch is the value after “x” (e.g. M 20 x 2,5 ° pitch = 2,5)

L = Length to order To calculate the necessary thread length (L): L=H+S+K+X H = Material height S = Thickness of the washer K = Height of the nut (depending on the thread size

of the screw) X = Excess length of the screw (twofold pitch of the screw) L max. = n max.

Now you have all the data you need to calculate the length to order: e.g.

Material thickness = 100 mm; Chosen lifting point = PLBW 2,5 t (M20 ) H = 100 mm S = 4 mm („h1“ for size M20 from chapter „spare parts“) K = 20 mm („h“ for size M20 from chapter „spare parts“) X = 2,5 mm x 2 =5 mm (twofold pitch „2,5“ for size M20 from chapter „overview“) L = H + S + K + X = 100 + 4 + 20 + 5 = 129 mm Round to nearest dimension (in steps of 5 mm) and you have your order length: PLBW 2,5 t M20x130 special length

Attention: Max. deliverable thread length can be seen in catalogue under column „n max“ for the required lifting point.

pewag austria GmbH A-8041 Graz, Gaslaternenweg 4, Phone: +43 316 6070-0, Fax: +43 316 6070-100 saleinfo@pewag.com, www.pewag.com

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Manual Lifting points with special length – how to calculate the length for order

Technical changes and misprints are subject to alteration.