Hose fittings
Hose Fittings
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Hollow Rod Cylinder
single acting, spring return,
max. operating pressure 400 bar.
| Order no. |
Article no. |
push-pull force at 100 bar [kN] |
push-pull force at 400 bar [kN] |
Stroke H
[mm] |
Vol.
[cm³] |
effective piston area
[cm²] |
Spring force min.
[N] |
Weight
[g] |
CAD | SC |
|---|---|---|---|---|---|---|---|---|---|---|
| 64998 | 6920-20 | 5,0 | 20 | 8 | 4 | 4,9 | 200 | 930 |
|
|
| 63016 | 6920-32 | 8,0 | 32 | 10 | 8 | 8,0 | 350 | 1730 |
|
|
| 65011 | 6920-50 | 12,5 | 50 | 12 | 15 | 12,8 | 540 | 1650 |
|
|
| 63057 | 6920-80 | 20,0 | 80 | 15 | 30 | 20,0 | 750 | 3850 |
|
|
| 65003 | 6920-125 | 32,0 | 125 | 20 | 64 | 32,8 | 1120 | 6250 |
|
Design:
Cylinder barrel from steel, burnished. Piston and piston rod case hardened and ground. Built-in return spring. With sintered bronze filter. 2 wipers and vent screw. Oil supply via threaded port.
Application:
Particularly suitable for retrofitting existing fixtures for hydraulic actuation. When workpieces are clamped onto a machine tool table, the hollow rod cylinder can be fitted over the clamp bolt instead of the nut. The hollow rod cylinders can be used for push or pull applications.
Features:
Completely sealed against contamination and chips by means of sinter metal breather and two wipers. Piston can be moved to its end stop. Oil connection at both ends, thus easy lining up in series.
Note:
Cylinders are designed for use in combination with tempered bolts, material grade 8.8, e. g. DIN 787 and DIN 6379. Bolts matching the hole are recommended.
For single acting cylinders there is risk of sucking in coolant during the return stroke. In this case the cylinders have to be protected against the direct effect of coolant. The sinter metal breather should be protected.
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dimensions table
Order
no.Article no. Piston
dia.
[mm]A dia. D
dia. F K L dia. M
dia. N R 64998 6920-20 32 80 52 40 56,0 82 12,5 20 G1/8 63016 6920-32 40 90 60 44 60,5 94 14,5 24 G1/8 65011 6920-50 48 101 70 50 71,5 103 18,5 26 G1/8 63057 6920-80 60 115 80 60 87,0 119 22,5 32 G1/4 65003 6920-125 75 149 100 75 108,0 151 27,5 38 G1/4