Pitched Roofs

Round seam clamp

Secure hold on round seam roofs

  • Suitable for round seam roofs with max. Ø 18 mm, suitable for rail-free, horizontal module mounting
  • Rails can also be used for vertical module installation by using the cross connector
  • Includes hexagon bolt M10 and locking nut M10 – not pre-assembled!

Technical Data

Dimensions Clamping thickness: d=4 mm
Material Bracket: aluminum EN AW 6063 T66, screws: M10, A2
Middle and end clamps Adjust the middle and end clamps to the module frame height by turning the cylinder head screw (TX 40) and then fix in place. Tightening torque 8-10 Nm.
Tightening torque MA = 20 Nm = 20 kN⋅mm
Tensile force screw FM = MA / (0.16 ⋅ P + 0.58 ⋅ μG ⋅ d2 + μK ⋅ rm)
P = Pitch of the thread = 1.25 mm
μG = μK = coefficient of friction = 0.15 (average value)
d2 = Flank diameter of the thread = M10 = 9.06 mm
rm = average support radius = 0.25 ⋅ (DK + DI) DK = 16 mm
DI = 12 mm → rm = 7.00 mm
FM = 20 / (0.16 ⋅ 1.25 + 0.58 ⋅ 0.15 ⋅ 9.06 + 0.15 ⋅ 7.00) = 7.66 kN
Clamping force per screw K = 7,66 ⋅ 20 / 46 = 3,33 kN
Permissible tensile force Z = 1 ⋅ K ⋅ μ0 / Ym
YM = 1,10
μ0 > 0,2 (static friction value for round shape)
Z = 2 ⋅ 3,33 ⋅ 0,2 / 1,10 = 1,21 kN

Project request

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Contact to SUNAVI SYSTEMS