Technical data of actuators

Actuator dimensions

K/S	MJ	P	C	FG	KO	H	D	L	LS
50/100	M27*2	28	60	120	40	15	M18*1.5	185	285
50/300	M27*2	28	60	120	40	15	M18*1.5	185	485
50/500	M27*2	28	60	120	40	15	M18*1.5	185	685
50/700	M27*2	28	60	120	40	15	M18*1.5	185	885
50/900	M27*2	28	60	120	40	15	M18*1.5	185	1085
63/100	M27*2	35	73	140	40	15	M18*1.5	205	305
63/300	M27*2	35	73	140	40	15	M18*1.5	205	505
63/500	M27*2	35	73	140	40	15	M18*1.5	205	705
63/700	M27*2	35	73	140	40	15	M18*1.5	205	905
63/900	M27*2	35	73	140	40	15	M18*1.5	205	1105
80/100	M33*2	50	92	160	40	15	M18*1.5	240	340
80/300	M33*2	50	92	160	40	15	M18*1.5	240	540
80/500	M33*2	50	92	160	40	15	M18*1.5	240	740
80/700	M33*2	50	92	160	40	15	M18*1.5	240	940
80/900	M33*2	50	92	160	40	15	M18*1.5	240	1140
100/100	M42*2	60	114	180	50	20	M18*1.5	260	360
100/300	M42*2	60	114	180	50	20	M18*1.5	260	560
100/500	M42*2	60	114	180	50	20	M18*1.5	260	760
100/700	M42*2	60	114	180	50	20	M18*1.5	260	960
100/900	M42*2	60	114	180	50	20	M18*1.5	260	1160
125/100	M60*2	70	145	250	40	25	M22*1.5	270	370
125/300	M60*2	70	145	250	40	25	M22*1.5	270	570
125/500	M60*2	70	145	250	40	25	M22*1.5	270	770
125/700	M60*2	70	145	250	40	25	M22*1.5	270	970
125/900	M60*2	70	145	250	40	25	M22*1.5	270	1170

K – Inner diameter of the pipe
P – Piston rod diameter
MJ – Thread on the piston rod
S – Jump
C – Outer diameter of the pipe
FG – Outer dimensions of the bottle
KO – Thread length on the piston rod
H – Thickness of the bottle
D – Connection thread
L – Length of the folded actuator
LS – Length of the extended actuator

Actuator - cross-section

Actuator flange dimensions

Diameter inside the cylinder	Q1	Q2	Q3
50	4 x 14	95	120
63	4 x 14	115	140
80	4 x 16	135	160
100	4 x 20	150	210
125	4 x 20	210	250

Pressure forces and return thrust force

Table of the pressure force P and the return thrust force C for different cylinder diameters at different nominal pressure values

P - Pressure force
C - Return thrust force

Diameter cylinder / piston rod	5 MPa		7 MPa		10 MPa		12 MPa		14 MPa		16 MPa		21 MPa		25 MPa		31.5 MPa
Diameter cylinder / piston rod	P	C	P	C	P	C	P	C	P	C	P	C	P	C	P	C	P	C
50 / 28	0.9	0.6	1.3	0.9	1.9	1.3	2.3	1.6	2.7	1.8	3.1	2.1	4.1	2.8	4.9	3.3	6.1	4.2
63 / 35	1.5	1	2.1	1.5	3.1	2.1	3.7	2.5	4.3	3	4.9	3.4	6.5	4.5	7.7	5.3	9.8	6.7
80 / 50	2.5	1.5	3.5	2.1	5	3	6	3.6	7	4.2	8	4.9	10.5	6.4	12.5	7.6	15.8	9.6
100 / 60	3.9	2.3	5.5	3.3	7.8	4.7	9.4	5.6	10.9	6.6

FAQ – Frequently Asked Questions about Hydraulic Cylinders

To select the correct replacement, you need to know four key dimensions:

Length when compressed: The distance measured from the center of one eyelet (mounting hole) to the center of the other eyelet when the actuator is fully retracted.
Working stroke: The maximum extension length of the piston rod (chromed rod).
Piston rod diameter: The thickness of the chromed rod.
Cylinder outer diameter: The thickness of the actuator's outer tube (based on this, you can estimate the diameter of the internal piston, which is responsible for the force).

A double-acting cylinder has two hydraulic ports. Pressurized oil is used for both extending and retracting the piston rod (the cylinder has push and pull force).

A single-acting cylinder has only one port (or a second one that serves only as a vent). Oil extends the piston rod, and retraction occurs due to the weight of the machine or a built-in spring (e.g., in dump trucks).

The force of the actuator depends on two factors: the system pressure (bar) and the internal diameter of the piston (not to be confused with the piston rod diameter!). The larger the diameter of the "tube" and the higher the pressure supplied by the pump, the greater the weight the actuator can lift. In the technical tables on our website, we provide precise lifting capacity values for standard operating pressure (most often 160-200 bar).

This is due to the laws of physics. During retraction (pulling), oil pressure acts on the piston, but its working surface is reduced by the cross-sectional area of the piston rod (chromed rod). Because the oil has less space to press on, the cylinder generates less force on return.

Most of our actuators have so-called spherical bearings in the mounting eyes. These allow for slight deviations of the actuator during operation. This allows the system to tolerate minor play and unevenness on the pins, protecting the piston rod from bending or cracking seals due to lateral stresses.

Our standard piston actuators are designed for continuous operation at a working pressure of 200 bar, and the maximum (instantaneous) pressure typically reaches 250 bar. Detailed strength parameters for a given model can always be found in the product data sheet.