CFRP Hollow-Piston Cylinder 1407 kN/250

DYWIDAG Strand Anchors

 

Light Weight Hollow-Piston Cylinders for Prestressing Jacks

CFRP Hollow-Piston Cylinder (maximum pressure 700 bar)

In comparison to normal steel hollow piston cylinders, CFRP Hollow-Piston Cylinders offer the convenience of up to 60 % less weight. This enormous advantage is realized particularly with mobile applications as well as during manual handling.

Heavy lifting equipment for transport and assembling of the cylinders can be omitted in most situations.

The ultra-light weight CFRP-cylinders allow a simple and efficient workflow. These cylinders have an integrated overflow valve which opens when the piston is completely extended. The fixing of the cylinder lid is unable to stand the full piston force.

The CFRP hollow-piston cylinders can be connected with auxilliary wedge setting devices or stressing chairs for ground anchors.

Light Weight Hollow-Piston Cylinders Schema
Selection from our product range (more series available on request)
Species Compressive Force Stroke Passage Mass Piston Area Assembly Dimensions (B) x (C) Series
[kN] [mm] [mm] [kg] [cm2] [mm]
80 t891 200 75 23 127,5 190 x 380 L-HK-DZ-080-200-075-HP
100 t 990 200 83 25 141,4 190 x 405 L-HK-DZ-100-200-84-HP
120 t 1187 180 90 28 169,6 215 x 397 L-HK-DZ-120-180-090-HP*
140 t 1407 250 105 39 201,1 235 x 458 L-HK-DZ-140-250-105-HP
170 t 1781 180 110 49 254,5 260 x399 L-HK-DZ-170-180-110-HP
200 t 1917 180 150 61 273,9 324 x 413 L-HK-DZ-200-180-150-HP
320 t 3149 150 100 62 449,8 324 x 380 L-HK-DZ-320-150-100-HP
* Standard-Cylinder available ex work

CFRP-lightweight prestressing jacks with integrated wedge setting device

CFRP-lightweight prestressing jacks with integrated wedge setting device

For smaller tendons, CFRP-prestressing jacks with integrated wedge setting device are used. This piston saves space and provides a non-slipping anchorage of tendons or ground anchors. An additional hydraulic connection is necessary. The withdrawal of the wedge setting piston happens automatically during the stressing operation.

For testing ground anchors, stressing chairs can be supplied to maintain the anchoring of ground anchors after testing, together with the hydraulic wedge setting piston. For servicing, portable and mobile hydraulic aggregates are available.

Selection from our product range (more series available on request)
Species Compressive Force Stroke/wedging stroke Passage (A) Mass Piston Area Assembly Dimension (B) x (C) Number of Strands Series
[kN] [mm] [mm] [kg] [cm2] [mm] max.
110 t1100 250/20 85 37 167,8 215 x 600 7 x 0,5
5 x 0,6 		CFK 1100/250/20/085/70-403.00
160 t1600 250/20 105 55 237,0 260 x 600 9 x 0,5
7 x 0,6 		CFK 1600/250/20/105/70-403.01
210 t2100 250/20 118 65 303,7 290 x 600 12 x 0,5
9 x 0,6 		CFK 2100/250/20/118/70-403.02
CFRP lightweight jack with attached wedge setting cylinder
CFRP lightweight jack with attached wedge setting cylinder
CFRP lightweight jack with displacement measuring device
CFRP lightweight jack with displacement measuring device