technical data linear actuator Power Cylinder Selection

Selection: Eco Series Servo Type

Input shaft moment of inertia

Basic model number reducer
size		 Moment of inertia per stroke x 10-4 kg m 2
100 200 300 400 500 600
LPES15F - 0.086 0.102 0.119 - - -
LPES30F - 0.134 0.151 0.168 - - -
LPES30R3 042 0.045 0.047 0.049 - - -
LPES30R4 0.038 0.039 0.041 - - -
LPES30R5 0.035 0.036 0.037 - - -
LPES30R7 0.033 0.033 0.033 - - -
LPES30R9 0.032 0.032 0.032 - - -
LPES30RA 0.031 0.032 0.032 - - -
LPES150F - 1.039 1.166 1.292 1.418 1.545 1.671
LPES150R3 060 0.275 0.290 0.304 0.318 0.332 0.346
LPES150R4 0.205 0.213 0.221 0.229 0.237 0.244
LPES150R5 0.172 0.177 0.182 0.187 0.192 0.197
LPES150R7 0.151 0.154 0.156 0.159 0.162 0.164
LPES150R9 0.143 0.144 0.146 0.148 0.149 0.151
LPES150RA 0.140 0.142 0.143 0.144 0.145 0.147
LPES300F - 1.720 1.846 1.973 2.099 2.225 2.352
LPES300R3 060 0.351 0.365 0.379 0.393 0.407 0.421
LPES300R4 0.247 0.255 0.263 0.271 0.279 0.287
LPES300R5 0.199 0.204 0.209 0.214 0.219 0.224
LPES300R7 0.165 0.168 0.170 0.173 0.175 0.178
LPES300R9 0.151 0.153 0.154 0.156 0.157 0.159
LPES300RA 0.147 0.148 0.150 0.151 0.152 0.154
LPES300R3 075 0.801 0.815 0.829 0.843 0.857 0.871
LPES300R4 0.587 0.595 0.603 0.611 0.619 0.627
LPES300R5 0.539 0.544 0.549 0.554 0.559 0.564
LPES300R7 0.485 0.488 0.490 0.493 0.495 0.498
LPES300R9 0.461 0.463 0.464 0.466 0.467 0.469
LPES300RA 0.457 0.458 0.460 0.461 0.462 0.464
Basic model number reducer
size		 Moment of inertia per stroke x 10-4 kg m 2
200 300 400 500 600 800 1000
LPES1500F - 12.513 13.155 13.797 14.438 15.080 16.363 17.647
LPES1500R3 075 2.000 2.072 2.143 2.214 2.286 2.428 2.571
LPES1500R4 1.262 1.302 1.342 1.382 1.423 1.503 1.583
LPES1500R5 0.971 0.996 1.022 1.048 1.073 1.125 1.176
LPES1500R7 0.705 0.718 0.732 0.745 0.758 0.784 0.810
LPES1500R9 0.594 0.602 0.610 0.618 0.626 0.642 0.658
LPES1500RA 0.565 0.572 0.578 0.584 0.591 0.604 0.616
LPES1500R3 100 4.640 4.712 4.783 4.854 4.926 5.068 5.211
LPES1500R4 3.522 3.562 3.602 3.642 3.683 3.763 3.843
LPES1500R5 3.211 3.236 3.262 3.288 3.313 3.365 3.416
LPES1500R7 2.875 2.888 2.902 2.915 2.928 2.954 2.980
LPES1500R9 2.724 2.732 2.740 2.748 2.756 2.772 2.788
LPES1500RA 2.695 2.702 2.708 2.714 2.721 2.734 2.746
LPES1500R3 140 11.000 11.072 11.143 11.214 11.286 11.428 11.571
LPES1500R4 8.547 8.587 8.627 8.667 8.708 8.788 8.868
LPES1500R5 8.065 8.090 8.116 8.142 8.167 8.219 8.270
LPES1500R7 7.469 7.482 7.495 7.508 7.521 7.547 7.574
LPES1500R9 7.239 7.247 7.255 7.263 7.271 7.286 7.302
LPES1500RA 7.191 7.198 7.204 7.210 7.217 7.230 7.242

Note: The moment of inertia does not include the moment of inertia of the servo motor.

Allowable frequency of use and Percentage duty cycle

Percentage duty cycle is the percentage of operation time per 30 minutes, based on a 30-minute period.

Percentage duty cycle is calculated using the formula on the right.

The allowable number of starts for the Eco Series servo type is determined by the heat generated by the motor and Ball screw /bearing. The above values should be used as a guideline as they vary depending on the stroke and thrust used. Also, they do not take into account the lifespan of the cylinder. However, this is subject to the condition that the servo motor is operated within its rated capacity.

Number of startups 15 times/minute
Percentage duty cycle 50%ED

*Normally indoors refers to a location that is not exposed to wind, rain, or water, and where the dust level is the same as that inside a general factory.

Percentage duty cycle (%ED) = Operation time per cycle Operation time per cycle + Down time x 100

lifespan

The lifespan of Ball screw is determined by flaking caused by fatigue on the rolling surface. Please check this expected travel distance graph for an approximate lifespan. However, if there is a lot of impact or if proper lubrication and maintenance are not performed, the expected travel distance will be significantly shorter.

Expected travel distance (km) = Actual load stroke (m) × frequency of use (times/day) × number of operating days/year × 10-3 × expected number of years

The graph on the right is based on L10 life.
L10 life is the lifespan that 90% or more of the total can achieve, expressed in travel distance.
When selecting Power Cylinder based on its lifespan, please select the model number from this graph.

For example, if the expected travel distance is 1000km and the actual load is 5000N {510kgf}, the required Power Cylinder is LPES1500.

*Select the servo motor capacity from the mount code table so that "actual load < generated thrust".

If the load fluctuates significantly midway through the stroke, calculate the equivalent load (P M) using the formula below.

Also, for LPES30 or below, the expected travel distance is over 10,000 km.

PM = PMIN + 2×PMAX 3

P M: Equivalent load N{kgf}

P MIN: Minimum load N{kgf}

P MAX: Maximum load N{kgf}

Expected travel distance

Expected travel distance
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