Simplified thrust calculation for hydraulic cylinders

・Tsubaki has posted a calculation formula to convert hydraulic cylinder output to power cylinder thrust.
・This calculation formula has been posted for reference purposes only. Please contact a Tsubaki representative for more information.


・Enter the hydraulic cylinder specifications and push the Start Calculating button.

・Please use “.” for the decimal point and not “,” as the calculation error will occur.


Pushing Pulling
Cylinder inner diameter D： mm Pushing side receiving area Aa： mm2
Piston rod diameter d： mm Pulling side receiving area Ab： mm2
Working pressure P (Note 1 )： Mpa
Hydraulic cylinder efficiency (Note 2 )：

Calculate

Note 1
　Please enter a value greater than 1Mpa.

Note 2
　Hydraulic efficiency is the ratio of theoretical cylinder thrust to actual load on the cylinder.
　Use the following values as guides for hydraulic cylinder efficiency. However, you will need to enter the eventual values that you decide on your own.
　・Low speed operation (less than 50mm/s): 0.5 to 0.8
　・Mid-speed operation (51 to 250mm/s): 0.35 to 0.5
　・High speed operation (over 251mm/s): 0.25 to 0.35


・Results of calculating the conversion of hydraulic cylinder output to power cylinder thrust

Pushing converted thrust (FH)= × × × 10-3　= kN, kgf
Pulling converted thrust (FR)= × × × 10-3　= kN, kgf

Advantages of replacing hydraulic cylinders with electric cylinders (Power Cylinders)

Various advantages include improved cost performance, ease of maintenance, and cleanliness due to energy savings.

For details, please refer to the Hydraulic Replacement Guide.

Power Cylinder corresponding to the calculated thrust

In selecting

  • ・This selection result does not take into account the inertia ratio. For final selection, please check the list of models in the catalog or the additional items listed in the “Points to consider when selecting” section of the technical data.
  • ・If the relevant series is not listed, please contact us. Special specifications may be available. If you send us the results of the thrust calculation and other conditions of use, we will make the selection.

For use (differences from hydraulic cylinders)

When stopping the cylinder, please pay attention to the following points.

  • ・Press stop by the stroke end inside the cylinder is not possible. (Possible for ECO series CDS type)
Series Thrust Speed
mm/s		 Stroke
mm		 Motor Allowable startup frequency
Number of times/min 		Outdoor use Push (pull) stop is possible or not. Product Info
kN kgf Power Supply capacity
F Series 0.1 ～ 6.00 10.2 ～ 612 8 ～ 54 50 ～ 600 DC 29W, 160W 2 Possible Impossible with push(pull) stop

Details

12 / 24V
Eco Series CDS Type 0.25 ～ 1.00 25.5 ～ 102 90 ～ 200 100 ～ 600 AC 3Φ 50W, 90W 2 ～ 15 Cannot be used Possible with push(pull) stop
Press stop at stroke end is also possible.

Details

200 VAC class
G Series 0.7 ～ 3.00 71.4 ～ 306 25 ～ 240 100 ～ 1200 AC 3Φ 0.1 ～ 0.4kW 10 Possible A Type
B Type 		C Type

Details

200 / 400 VAC class Impossible with push(pull) stop Possible with push(pull) stop
Eco Series Servo Type 0.15～15 15.3~1530 30~333 200~1000 Possible to mount desired servo motor 15 Cannot be used Impossible with push(pull) stop

Details

T Series 2.45 ～ 39.2 250 ～ 4000 9 ～ 120 200 ～ 1500 AC 3Φ 0.1 ～ 3.7kW 4 ～ 5 Possible B Type C Type

Details

200 / 400 VAC class Impossible with push(pull) stop Possible with push(pull) stop
Worm Series 49 ～ 490 5000 ～ 50000 5 ～ 72 200 ～ 2000 AC 3Φ 0.4 ～ 11 1 Possible Impossible with push(pull) stop

Details

200 / 400 VAC class
U Series 58.8 ～ 490 6000 ～ 50000 6.5 ～ 52 500 ～ 2000 AC 3Φ 0.75 ～ 15kW 2 ～ 4 Possible B Type C Type

Details

200 / 400 VAC class Impossible with push(pull) stop Possible with push(pull) stop