Technical Data 　Linear actuator 　Power Cylinder Selection

Selection ：ECO Series ・Servo type

Moment of Inertia on Input Shaft

Base Model No. Reducer frame No. Inertia moment ×10-4kg・m2
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
Base Model No. Reducer frame No. Inertia moment ×10-4kg・m2
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 servomotor.

Allowable operating frequency and load time ratio

The load time rate shows a rate of operating time per 30 minutes on a 30-minute basis.

The load time rate is calculated with the formula on the right.

The allowable number of starting times of the Eco series Servo type is determined depending on heating of the motor and heating of the ball screw and bearing part. It varies depending on the stroke and thrust in use, use the values specified above as a guide. Also, they are not values taking life of the cylinder body into consideration. However, servo motors must be operated within their ratings.

cycles 15times/min.
Percentage duty cycle 50%ED

※Normally indoors means no exposure to wind, rain, and water, and dust at a level inside an ordinary factory.

Percentage duty cycle (%ED) = Operation time of one cycle Operation time of one cycle + stop time ×100

Life

The life of a ball screw is determined by flaking of the rolling surface caused by its fatigue. Check the rough life with this chart of expected traveling distance. However, in case of great impact or where lubrication or maintenance is not performed properly, the expected traveling distance becomes substantially shorter.

Expected traveling distance (km) = Actual load stroke (m)×Frequency of use (/day )×Number of operating days / year ×10-3×Expected number of years

The chart on the right-hand side is based on L10 life.
L10 life expresses in traveling distance a life that can be reached by 90% or more of all ball screws.
If you select a power cylinder based on the life, select model No. from this chart.

For example, if the expected traveling distance is 1000km and the actual load is 5000N {510kgf}, the required power cylinder is LPES1500.

※Select the servomotor capacity from the motor matching table as the actual load < thrust generated.

If the load greatly fluctuates in the middle of stroke, calculate the equivalent load (PM) by the following formula.

Also, with LPES30 and below, the expected traveling distance becomes 10000km or longer.

PM = PMIN + 2×PMAX 3

PM：Equivalent load N{kgf}

PMIN：Minimum load N{kgf}

PMAX：Maximum load N{kgf}

Expected traveling distance

Expected traveling distance
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