DCN/DCU/DCR Rotating hydraulic cylinder with 2 independent pistons
■ Modular system for different piston strokes ■ Up to 70 bar ■ Central bore for air / coolant / oil ■ Stroke control via proximity switch or LPS 4.0 Application/customer benefits • Actuation of retractable jaw chuck with power operated face drivers • Actuation of power chuck with part-ejector • Actuation of power chucks with retractable axial stop / finger chucks with power operated centering fixture / chucks typ TPT-C with 2 piston actuation Technical features • Double piston cylinder with 4 way oil manifold for separate actuation of the 2 cylinders • Pressure range 8 - 70 bar • Modular system for different piston strokes: DCN, DCU and DCR • Horizontal or vertical installation
• Stroke control on each cylinder, safety valves on the big cylinder • Central bore for coolant, oil or air with thread for rotary union
• Mounting from the rear side with bolts • A 10 μm filter in pressure line is requested • Use oil HM32 ISO 3448 Standard equipment Double piston cylinder with shift ring
Ordering example
Double piston cylinder DCN 125-30
Mounting screws
or
Stroke control on each cylinder
Double piston cylinder DCN 125-30
Proximity bracket (without proximity switches)
with rotary union (optional)
Technical data
SMW-AUTOBLOK Type
60 / 20 170 / 40 170 / 60 170 / 40 DCN 55-38 DCR 32-38 DCN 70-25 DCN 87-40 DCU 40-40 DCR 40-80 DCN 95-50 DCU 50-48 DCR 50-95 33705206 33705406 33705213 33705214 33705313 33705413 33705215 33705315 33705415 55 - 38 32 - 38 70 - 25 87 - 40 40 - 40 40 - 80 95 - 50 50 - 48 50 - 95 48 48 111 111 111 111 146 146 146 60 60 125 125 125 125 168 168 168 21 21 27 27 27 27 36 56 36 21 21 30 30 30 30 40 60 40 33.5 33.5 77 77 77 77 102 102 102 42 42 87 87 87 87 118 118 118 14.5 14.5 19 19 19 19 25 39 25 14.5 14.5 21 21 21 21 28 42 28 5000 5000 5000 5000 5000 5000 4000 4000 4000 16.2 15.3 23.2 24 22.5 23 32 30 31 0.027 0.026 0.088 0.091 0.085 0.087 0.15 0.14 0.14 70 70 70 70 70 70 70 70 70 8 8 8 8 8 8 8 8 8 3 3 3 3 3 3 3 3 3 125 / 30
Id. No. Piston stroke Piston area A Piston area B Piston area C Piston area D
mm cm 2 cm 2 cm 2 cm 2
A Piston force max. B Piston force max. C Piston force max. D Piston force max.
kN kN kN kN
Max. speed
r.p.m.
Weight
kg
Moment of inertia
kg·m 2
Operating pressure max. Operating pressure min.
bar bar
Oil leakage (*)
dm 3 /min
* Total at 30 bar / 50 °C.
Important: On higher pressure the leakage increases proportionally. On higher oil temperature the leakage increases over proportionally (the use of an oil cooler is recommended). When designing / checking the hydraulic unit please ask for our data sheets. Option: LPS 4.0 linear stroke control. Rotary union for oil / coolant / air.
Cylinder DCN for retractable jaw chucks type W or GSA with face drivers with fixed center
C B
D
A
Piston 2 for actuation of the driving pins in the face driver
Piston 1 for chuck actuation
336 SMW-AUTOBLOK
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