Max Lifting Force
Perpendicular Hold
Parallel Hold
Glass
170kgf / 375lbsf
120kgf / 265lbsf
Metal
110kgf / 242lbsf
110kgf / 242lbsf
Plastic
100kgf / 220lbsf
100kgf / 220lbsf
Wood
100kgf / 220lbsf
65kgf / 143lbsf
Ceramic Tile
170kgf / 375lbsf
120kgf / 265lbsf
Rough Concrete
80kgf / 176lbsf
80kgf / 176lbsf
Dry Wall
75kgf / 165lbsf
65kgf / 143lbsf
Rough Slate
80kgf / 176lbsf
80kgf / 176lbsf
Pressure to perpendicular lifting force conversion
For a more accurate estimation, check the pressure gauge on your
GRABO Pro and use the table below to convert pressure values to
max lifting force values. (Parallel holding force values can be
calculated using the P/P ratio provided above for different
materials.)
Pressure (bar)
Max perpendicular holding force
-0.8
170kgf / 375 lbsf
-0.6
128kgf / 282 lbsf
-0.4
85kgf / 187 lbsf
-0.2
43kgf / 95 lbsf
-0.1
21kgf / 46 lbsf
2