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Linear Actuators

General

This page describes the stainless steel linear actuator ERD. The stainless steel AKMH servomotors, which can be mounted to the actuators, are driven by a servo amplifierKollmorgen offers a mounting service for mounting the selected motor to the linear actuator. Both components are protection class IP69K.

Application area for these actuators is the food and beverage industry, without direct contact with unpacked foodstuffs. Applications can be cutting, packing and filling without direct contact with foodstuffs.

The AKMH motor can be mounted either in line with the actuator (LMI type) or invers parallel (RP1 type). Both variants have a gear ratio of 1:1.  Lead can be selected with 5mm/rev. (BNM05) or 10mm/rev. (BNM10).

Literature / Drawings

Technical Data ERD

Data Unit ERD15- BNM05 ERD15- BNM10 ERD20- BNM05 ERD20- BNM10 ERD25- BNM05 ERD25- BNM10 ERD30- BNM05 ERD30- BNM10
Max. stroke mm 150 to 600 (steps 10)
Lead mm/rev 5 10 5 10 5 10 5 10
Lead accuracy mm/300mm 0.87 0.87 0.87 0.87 0.051 0.051 0.051 0.051
Backlash mm 0.13 0.13 0.13 0.13 0.10 0.10 0.10 0.10
Max. thrust1 N 890 890 2224 2224 8896 7784 13345 13122
Dyn. load rating2 N 2002 1779 4003 4003 15089 14987 29840 33227
Max. speed mm/s 1000 1000 250 500 300 600 200 400
Max. motor- speed rpm 12000 6000 3000 3000 3600 3600 2400 2400
Inertia LMI kgm²x10-6 5.21 5.21 18.38 18.38 25.052 25.052 32.911 32.911
Inertia RP1 kgm²x10-6 64.61 64.61 120.04 120.04 226.79 226.79 626.38 626.38
Weight LMI kg 0.76 0.76 3.45 3.45 14.2 14.4 15.5 16.1
Weight RP1 kg 3.53 3.53 4.3 4.3 24.2 24.4 25.5 26.1
Weight adder
per 25mm stroke
kg 0.072 0.072 0.147 0.147 0.39 0.39 0.65 0.65

1) The maximum thrust is correct as the maximum the actuator should be subjected to at any time. 
2) The Dynamic Load Rating (DLR) is used to calculate the expected life of the ball screw. The ERD is represented with a DLR that is based on millions of revolutions.

Life Calculation

Example with ERD15 BNM05:
Application Thrust = 800N
Dynamic Load Rating = 2002N

L10 Calculation for Life = (DLR / Application Thrust)3 * Lead * 1,000,000 = Life
(2002/800)3 * 5mm * 1,000,000 ≈ 78,360,000 mm (Estimated Life)

Reference Table

You can order the motor and the actuator and a mounting service from Kollmorgen.

  Motor + Actuator
AKMH2xy-AN + ERD15-LMI
AKMH3xy-AN + ERD20-LMI
AKMH4xy-AN + ERD25-LMI
AKMH5xy-AN + ERD30-LMI
       
AKMH2xy-CN + ERD15-RP1
AKMH3xy-CN + ERD20-RP1
AKMH4xy-CN + ERD25-RP1
AKMH5xy-CN + ERD30-RP1

x = Motor length, y = Winding

Assembling Variants 

We offer four optional mounting versions:

Option LMI view in principle RP1 view in principle
FM2 (Foot mounting)
FFG (Flange mounting)
TRR (Trunnion mounting)
PCD (Clevis mounting) -

Application Notes

Further Information

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