Servomech ILA Series User manual

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 1
LINEAR ACTUATORS
ILA 15 A –ILA 25 A –ILA 50 A –ILA 100 A –ILA 150 A –ILA 200 A
ILA 15 B –ILA 25 B –ILA 50 B –ILA 100 B –ILA 150 B –ILA 200 B
Installation, operation and maintenance manual
Publication: 21.15-25-50-100-150-200.I - Rev. 01 Data (M/Y) 10/19
Servomech S.p.A. Via M. Calari, 1 - 40011 Anzola dell’Emilia (BO) - ITALY
Ph: + 39 051 6501711 Fax: + 39 051 734574 www.servomech.com [email protected]

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 2
WARNING
Read this manual before installing, operating or maintaining this actuator. Failure to
follow safety precautions and instructions could cause actuator failure and result in
serious injury, death or property damage.
This manual provides important information on how to work with the actuator safely
and efficiently. The manual is part of the device, must always be kept in the device’s
direct proximity and should be available for personnel to read at any time. Failure to
comply with the installation, use and maintenance instructions indicated in this
manual will result in immediate termination of the warranty conditions of the
actuator and completely relieve Servomech S.p.A. from any liability for damage
caused to persons and / or property.
Servomech S.p.A. it does not assume direct or indirect responsibility for an improper
use of the actuator, not respecting the performances of the actuator declared in the
catalogs.
The manufacturer will not be liable for damage to the actuator or the equipment into
which the actuator has been installed resulting from:
• disregarding this manual
• unintended use
• employment of untrained personnel
• unauthorized conversions
• technical modifications
• manipulation or removal of the screws on the device
• use of unapproved spare parts
The aforementioned conditions are therefore not contemplated and entail the
immediate termination of the guarantee and the immediate decay of any
responsibility on the part of Servomech S.p.A.
Servomech S.p.A. reserves the right to make changes to the actuators and this manual
without giving any notice.

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 3
LINEAR ACTUATORS ILA A/B 15 - 25 - 50 - 100 - 150 - 200
Installation, operation and maintenance manual
Contents
1 MODELS COVERED BY THIS DOCUMENT....................................................................................................4
2 IDENTIFICATION OF THE MANUFACTURER AND THE PRODUCT................................................................4
2.1 Identification of the manufacturer.....................................................................................................4
2.2 Description of the product .................................................................................................................4
2.3 Identification of the product ..............................................................................................................5
3 TRASPORT AND HANDLING ........................................................................................................................6
4 USE RESTRICTION .......................................................................................................................................7
4.1 Intended use.......................................................................................................................................7
4.1.1 Use restrictions...........................................................................................................................7
4.1.2 Standard operating conditions...................................................................................................8
4.1.3 Thermal limit ..............................................................................................................................8
4.2 Personnel requirements / Qualifications ...........................................................................................8
5 STORAGE.....................................................................................................................................................8
6 INSTALLATION ............................................................................................................................................9
6.1 Safety warnings ..................................................................................................................................9
6.2 FCP inductive proximity stroke limit switches..................................................................................10
6.3 FC electric stroke limit switches .......................................................................................................11
6.4 Electric motor wiring ........................................................................................................................12
6.4.1 AC 3-phase asynchronous motor .............................................................................................12
6.4.2 AC 1-phase asynchronous motor with balanced winding........................................................14
6.4.3 DC motor ..................................................................................................................................15
6.5 Linear actuator installation ..............................................................................................................16
6.6 Installation of rod end fitting elements............................................................................................17
7 COMMISSIONING AND USE......................................................................................................................18
8 LUBRICATION............................................................................................................................................19
9 MAINTENANCE .........................................................................................................................................20
9.1 Linear drive lubrication.....................................................................................................................21
9.2 Push rod guides lubrication..............................................................................................................22
9.3 Hinged head TF lubrication...............................................................................................................22
9.4 Thrust bearings lubrication ..............................................................................................................23

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 4
1 MODELS COVERED BY THIS DOCUMENT
The present manual is referred to following products:
Acme screw linear actuators: ILA 15 A –ILA 25 A –ILA 50 A –ILA 100 A –ILA 150 A –ILA 200 A
Ball screw linear actuators: ILA 15 B –ILA 25 B –ILA 50 B –ILA 100 B –ILA 150 B –ILA 200 B
2IDENTIFICATION OF THE MANUFACTURER AND THE PRODUCT
2.1 Identification of the manufacturer
SERVOMECH S.p.A. S.U.
Via Monaldo Calari, 1
40011 Anzola dell’Emilia (BO)
ITALY
Ph. [phone]
Fax. [phone]
Website: www.servomech.com
e-mail: [e-mail]
2.2 Description of the product
For all the technical characteristics of the product (performance, features, dimensions) refer to the
technical catalog.
Main actuator components:
1) Push rod
2) External tube
3) Housing with thrust bearings
4) Rod end
5) Support pins
6) Rear brackets SP
7) Proximity limit switches FCP
8) Electric limit switches FC
9) Linear drive grase nipple
10) Push rod guide grease nipples
11) Thrust bearings grease nipple
12) Rod end grease nipple (only for ILA A/B 100-150-200 with hinged head TF)
13) Flange and shaft for motor/gearmotor input drive
Figure 2.1 –Linear actuator components
ILA A/B with FCP proximity switches
ILA A/B with FC electric switches
1
1
2
2
3
3
4
4
5
6
7
8
9
9
10
10
11
11
12
13
13

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 5
2.3 Identification of the product
Every SERVOMECH linear actuator is provided with a nameplate, as shown below, which allows the product
identification and gives technical information about the product.
Figure 2.2 –Identification nameplate
1) Product code: is an alphanumeric code stating the type, size, ratio, version and stroke end switches of
the linear actuator;
2) Ratio: is the ratio of the input drive;
3) Stroke length: is the stroke length in millimetres achievable by the actuator;
4) Linear speed: is the linear speed expressed in mm/s when the actuator is provided with electric motor;
for an actuator without motor, this field is blank;
5) Delivery date: is the week/year of assembly (example: 30/13 = week 30 / year 2013) which usually
coincides with the delivery date; this date is considered as reference for the warranty period;
6) Serial number: is the identification number of the actuator which identifies the exact design of the
product even after a long time; the serial number is the essential reference for spare part orders.

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 6
3TRASPORT AND HANDLING
It is recommended to pay attention and care during the handling and transport of linear actuators
not to damage mechanical parts and / or accessories and to prevent risks for the personnel in charge
of this activity.
The packaging must be lifted and moved with care and in a safe way.
Use only safety-inspected and suitable load hoisting equipment.
For lifting and transporting the linear actuator, the push rod must be in retracted position.
When transporting the product with attached motor/gearmotor, always provide support for the
motor, or remove the motor before transporting the product.
Lift the actuator from the housing and outer tube using suitable slings.
DO NOT lift the actuator from the push rod and / or the motor.
Prevent the actuator from swinging during lifting operations.
In the case of BSA series actuators, the ball screw inside the actuator is NOT self-locking. Never lift
the linear actuator upright from the push rod as the actuators could be back driven by its own weight.
Figure 3.1 –Transport and handling
Before hoisting the linear actuator, check the weight on the following table:
ILA 15
ILA 25
ILA 50
ILA 100
ILA 150
ILA 200
A
B
A
B
A
B
A
B
A
B
A
B
Mass (actuator 100 mm stroke length,
without motor, with lubricant)
[kg]
10
10
17
18
37
36
74
72
103
107
144
146
Extra-mass for each additional 100 mm
stroke length
[kg]
0.9
0.9
2
2
3
3
6
6
7.5
6
12
12
In case of doubt, consult SERVOMECH S.p.A. to get the appropriate information and prevent any kind of
damage!

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 7
4USE RESTRICTION
The information contained in this chapter provides important prescriptions for operating safely during all
phases of the product's life.
Not knowing or not complying with these provisions can generate dangerous situations that could cause
damage to equipment and risks for the safety of persons.
4.1 Intended use
Actuators are used to perform very different functions within machines. It is the responsibility of the machine
builder to design the application in compliance with the laws in force in the specific sector and in the field of
safety, in compliance with the requirements provided in the product catalog and in this manual.
ACTUATORS ARE ELECTRIC AXIS, WHATEVER DRIVER OR CONTROL WILL BE USED: THE SELECTION OF
THE PRODUCT AS STROKE, SPEED, TYPE OF LIMIT SWITCHES, MOTOR AND BRAKE, MUST BE DONE
ACCORDING TO THE BEHAVIOR EXPECTED, IN FUNCTION OF THE TYPE OF CONTROL CHOOSEN AND
THE STATIC AND DYNAMIC BEHAVIOR OF THE SYSTEM IN WHICH THE ACTUATOR IS PLACED!
The actuators have been designed and built to operate mobile parts of various types, shapes and
construction, in the ways and within the limits set out in the descriptions and tables of the technical data in
the catalog and in this user manual.
The actuators are designed to work with a purely axial applied load.
They must be subjected to the loading and speed conditions specified in the catalog.
Modification of parts of the actuator or replacement of components with different and non-original parts is
not permitted. The replacement of components with original spare parts is carried out only by Servomech
S.p.A.
Any different use is to be considered improper and therefore potentially dangerous for the safety of the
operators, as well as such as to void the contractual guarantee.
In the event of particular processing requirements, we recommend consulting our sales department.
Every modification must be authorized by Servomech S.p.A. with written documents.
ANY OTHER USE OUTSIDE THAT THAT JUST DESCRIBED IS NOT PERMITTED BY SERVOMECH S.p.A.
4.1.1 Use restrictions
Actuators can not be used for unforeseen applications.
Any utilization of this device beyond its intended purpose may lead to potentially hazardous situations.
Therefore:
•Strictly adhere to all safety precautions and instructions in this operating manual.
•Do not allow this device to be subjected to weather conditions, strong UV rays, corrosive or explosive
air media as well as other aggressive media (*).
•Do not modify, retool or change the structural design or individual components of the actuator.
•Never use the device outside of the technical application and operational limits.
(*) –THE USE OF THE ACTUATOR IN ABOVE CONDITIONS MUST BE PREVIOUSLY DECLARED AND AGREED
WITH SERVOMECH, SINCE A SPECIAL EQUIPMENT OF THE PRODUCT MUST BE PROVIDED.

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 8
4.1.2 Standard operating conditions
The actuator must be used in an environment whose conditions comply with the provisions of Servomech
S.p.A. The works necessary for obtaining and maintaining that conditions are in charge of the owner and,
where applicable, are in charge of the end user.
The actuator must be installed and used indoor only, in dry area with environmental conditions as specified
below:
Temperature range +0°C ÷ +40°C
Relative atmospheric humidity 5% ÷ 85%
No build up of condensation
THE USE OF THE ACTUATOR IN DIFFERENT CONDITIONS THAN JUST DESCRIBED MUST BE PREVIOUSLY
DECLARED AND AGREED WITH SERVOMECH, SINCE A SPECIAL EQUIPMENT OF THE PRODUCT MUST
BE PROVIDED.
4.1.3 Thermal limit
The actuator duty cycle permissible Fi [%] is the maximum working time expressed in percentage that the
actuator can perform during the reference time period of 10 minutes, under rated load stated in the
catalogue at ambient temperature 25°C, without risk of internal parts overheating.
𝑭𝒊[%]=𝑀𝑎𝑥 𝑤𝑜𝑟𝑘𝑖𝑛𝑔 𝑡𝑖𝑚𝑒 𝑜𝑣𝑒𝑟 10 𝑚𝑖𝑛
10 𝑚𝑖𝑛 ×100
Linear drive
Fi [%]
Acme screw (ILA A series)
30
Ball screw (ILA B series)
100
For the proper operation of acme screw linear actuators (ILA A series) do never exceed the
permissible duty cycle limit.
4.2 Personnel requirements / Qualifications
This manual must be made available to the personnel in charge of installation, start up and use of the
actuator. It is the responsibility of the machine builder:
use personnel with the necessary qualifications for the installation and commissioning of the
actuator;
periodically check the qualification of the assigned personnel;
check that the personnel in charge are aware of the contents of this manual.
5STORAGE
Do not store outside.
Storage should be dry and dust-free.
Keep away from any aggressive media.
Protect from UV radiation.
Avoid mechanical vibrations.
Storage temperature: 0 to +50 °C.
Relative atmospheric humidity: max. 95% (no build up of condensation).
To store longer than 6 months, take care of moving the input shaft to prevent damages to sealings.
Also check that all unpainted parts are adequately protected (oiled and /or greased) to prevent
oxidation.

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 9
6INSTALLATION
The operations described in the paragraphs of this chapter provide both electrical and mechanical
connections of the actuator, as well as the execution of test motions at reduced speed and motor torque or
with small displacement steps.
6.1 Safety warnings
MOTORS CANNOT BE CONNECTED DIRECTLY TO THE ELETRICITY GRID. A PROPER CIRCUITS AND
DEVICES FOR MOVEMENT MANAGEMENT ON BOTH DIRECTIONS IS REQUIRED. STROKE END LIMIT
SWITCHES (MICROSWITCHES OR SENSORS) MUST BE CONTROLLED TO BE SURE THE LINEAR
MOVEMENT OF THE ACTUATOR (DUE TO THE OPERATION OF THE MOTOR OR TO THE INERTIA OF
THE MOVING PARTS) STOPS BEFORE TO REACH THE MECHANICAL STROKE END LIMITS. IN CASE THIS
HAPPENS, THE ACTUATOR CAN BE LOCKED AND THE INTERNAL COMPONENTS CAN BE DAMAGED.
WHEN THE MOTORS MUST BE POWERED BY A CONVERTER (ELECTRIC DRIVE), THIS MUST BE CHOSEN
BY QUALIFIED PERSONNEL.
IN CASE THERE ARE INVOLVED ELECTRONIC DRIVE AND CONTROL DEVICES ON THE ACTUATOR
MOVING CONTROL, REFER TO MANUALS FOR ALL THE NECESSARY INFORMATION AND CORRECT
INSTALLATION AND MAINTENANCE OF THE PRODUCT.
BEFORE TO PROCEED TO THE ELECTRIC CONNECTION, MAKE SURE THE SUPPLY VOLTAGE IS TURNED
OFF.
BEFORE TO TURN-ON THE MOTOR, MAKE SURE THE ELECTRIC CONNECTIONS ARE TIGHTENED AND
STABLE.
CHECK POWER SUPPLY CABLES NOT TO BE DAMAGED DURING THE COMMISSIONING. POWER
SUPPLY CABLES MUST BE OUT OF HEAT SOURCES AND MOVING ORGANS.
DURING FUNCTIONING ARE PRODUCED MAGNETIC, ELECTRIC AND ELECTROMAGNETIC FIELDS. THIS
MAY BE DANGEROUS FOR PEOPLE THAT USE CARDIAC STIMULATOR (PACEMAKER), IF NOT
SUFFICIENT DISTANCE.
DO NOT DISCONNECT ANY CONNECTION DURING OPERATION OR IN PRESENCE OF SUPPLY VOLTAGE.
BEFORE TO TURN-ON THE MOTOR, MAKE SURE THE MECHANICAL CONNECTIONS OF THE ACTUATOR
REMAIN TIGHTENED AND STABLE, ALSO DURING THE OPERATION.
DURING THE COMMISSIONING, UNEXPECTED MOVEMENT OF THE MOTOR MAY BE CAUSED BY:
WIRING ERRORS
MOUNTING ERRORS
DAMAGES ON POWER SUPPLY CABLES
HARDWARE OR SOFTWARE ERRORS
DRIVER PARAMETERS ERRORS
OPERATION IN CONDITIONS OUTSIDE THE SPECIFICATIONS PROVIDED BY THE
CATALOG AND THIS MANUAL
MAKE SURE THE SAFETY PROTECTION OF THE MACHINE (MECHANICAL AND ELECTRICAL) ARE
ACTIVE.
DURING OPERATION, TEMPERATURE OF THE EXTERNAL SURFACE OF MOTORS CAN REACH HIGH
TEMPERATURES. HOT SURFACES ON ACTUATOR CAN CAUSE BURNS AND SHOULD NOT BE TOUCHED.

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 10
6.2 FCP inductive proximity stroke limit switches
The INDUCTIVE PROXIMITY STROKE LIMIT SWITCHES allow the actuator to stop before reaching the internal
mechanical stop avoiding damage. If intermediate sensors are present, they can be used to fix intermediate
positions along the actuator stroke length. The inductive proximity stroke end switches are fixed directly on
the actuator outer tube in the required position.
The switches position is not adjustable.
The positions of the two limit switches are the extreme travel positions Lc and La (see Fig. 6.9).
FC 1 –sensor for RETRACTED ACTUATOR Lc position
FC 2 –sensor for EXTENDED ACTUATOR La position
Figure 6.1 –FCP inductive proximity stroke limit switches
Proximity switches are supplied already mounted on the actuator and set to the correct sensing
distance.
DO NOT CHANGE THE SENSING DISTANCE OF PROXIMITY SWITCHES BY MOVING THE TWO NUTS
FIXED ON THE SENSOR.
In case it is necessary to restore the correct sensing distance position, please refer to Fig. 6.1.
The PROXIMITY STROKE LIMIT SWITCHES must be connected to the electric control circuit as shown in the
following WIRING DIAGRAM:
CONTROL CIRCUIT
PROXIMITY SWITCH –TECHNICAL FEATURES
Contact
NC (normally CLOSED)
Type
Inductive, PNP
Voltage
10 ÷ 30 V DC
Max output current
200 mA
Voltage drop (activated
switch)
< 3 V (ref. 200 mA)
Nominal sensing distance
2 mm
Enclosure rating
IP 67
Housing material
Nickel plated brass
Outlet
Multicore PVC cable 3 × 0.2 mm2
length 2 m
Wiring
DO NOT TRAVEL OVER THE STROKE LIMIT SWITCHES POSITIONS, AVOIDING TO REACH MECHANICAL
STOP AND PREVENTING DAMAGE TO THE INTERNAL COMPONENTS OF THE ACTUATOR.
Actuator
P [mm]
ILA 15 A
4
ILA 15 B
4
ILA 25 A
3.5
ILA 25 B
4
ILA 50 A
3.5
ILA 50 B
4
ILA 100 A
8.5
ILA 100 B
9
ILA 150 A
8.5
ILA 150 B
9
ILA 200 A
13.5
ILA 200 B
14

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 11
6.3 FC electric stroke limit switches
The ELECTRIC STROKE END SWITCHES FC allow to limit the actuator stroke avoiding to reach the extreme
positions (mechanical stops) and preventing damage. The device consists of two switch assemblies, each of
them containing one miniature electric switch (FC 1, FC 2) which is operated when the actuator reaches the
stroke end position. When the actuator proceeds on opposite direction, there is a spring that allows the
return of switch to its neutral position, thus deactivating the switch. The entire assembly is covered by a
cover and sealed by a rubber seal.
The electric stroke end switches FC are available for actuators ILA 100, ILA 150 and ILA 200.
The activation positions of the two limit switches are the extreme travel positions Lc and La (see Fig.
6.9).
FC 1 –sensor for RETRACTED ACTUATOR Lc position
FC 2 –sensor for EXTENDED ACTUATOR La position
FigurE 6.2 –FC electric stroke limit switches
The position of the assembly along the outer tube is not adjustable.
The device cannot be used to fix any intermediate position.
The ELECTRIC STROKE LIMIT SWITCHES must be connected to the electric control circuit as shown in the
following WIRING DIAGRAM:
CIRCUITO DI COMANDO
INTERRUTTORI ELETTRICI –CARATTERISTICHE TECNICHE
Contact
NC (normally closed)
Supply voltage
250 V AC
125 V AC
125 V DC
Current
(resistive load)
16 A
16 A
0.6 A
Current
(inductive load)
10 A
10 A
0.6 A
Output
2 PVC multicore cables 2 × 0.75 mm2
length 1.5 m
Wiring
DO NOT TRAVEL OVER THE STROKE LIMIT SWITCHES POSITIONS, AVOIDING TO REACH MECHANICAL
STOP AND PREVENTING DAMAGE TO THE INTERNAL COMPONENTS OF THE ACTUATOR.

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 12
6.4 Electric motor wiring
6.4.1 AC 3-phase asynchronous motor
Connect the motor to the power unit of the plant or to the driver according to the following wiring diagrams,
related to the motor type:
(a) AC 3-phase motor without brake
(b) AC 3-phase motor with DC brake directly powered with rectifier
(c) AC 3-phase motor with 3-phase brake directly powered
(d) AC 3-phase motor with DC brake separately powered AC 1-phase with rectifier
(e) AC 3-phase motor with AC 3-phase brake separately powered
(f) AC 3-phase motor with DC brake separately powered AC 2-phase with rectifier
(g) AC 3-phase motor with DC brake separately powered
In case of brake motor:
the brake is NORMALLY CLOSED (NEGATIVE action). When the power supply is switched off, the brake
is engaged. The brake opens only when power is supplied;
if the brake is wired directly to the connecting pins of the terminal box, it does not require any power
supply;
if the brake is wired separately, make sure that the correct voltage is used;
if the brake is equipped with hand release device, make sure that the brake is engaged before starting
the linear actuator.
Figure 6.3 –Electric wiring diagrams to power supply of AC 3-ph motor
K1, K2, K3 = contactor
M = motor
Br = brake

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 13
Figure 6.3 –Electric wiring diagrams to power supply of AC 3-ph motor
Figure 6.4 –Electric wiring diagrams to motor terminal board of AC 3-ph motor
IN CASE OF ELECTRIC MOTOR DIFFERENT FROM THE ABOVE MENTIONED, PLEASE REFER TO
INSTALLATION INSTRUCTIONS SUPPLIED BY THE MANUFACTURER.
K1, K2, K3 = contactor
M = motor
Br = brake

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 14
6.4.2 AC 1-phase asynchronous motor with balanced winding
Connect the motor to the power unit of the plant or to the driver according to the following wiring diagrams,
related to the motor type:
(a) AC 1-phase motor without brake
(b) AC 1-phase motor with DC brake separately powered AC 1-phase with rectifier
In case of brake motor:
the brake is NORMALLY CLOSED (NEGATIVE action). When the power supply is switched off, the brake
is engaged. The brake opens only when power is supplied;
the brake is wired separately, make sure that the correct voltage is used;
if the brake is equipped with hand release device, make sure that the brake is engaged before starting
the linear actuator.
Figure 6.5 –Electric wiring diagrams to power supply of AC 1-ph motor
Figure 6.6 –Electric wiring diagrams to motor terminal board of AC 1-ph motor
IN CASE OF ELECTRIC MOTOR DIFFERENT FROM THE ABOVE MENTIONED, PLEASE REFER TO
INSTALLATION INSTRUCTIONS SUPPLIED BY THE MANUFACTURER.
K1, K2, K3 = contactor
M = motor
Br = brake

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 15
6.4.3 DC motor
Connect the motor to the power unit of the plant or to the driver according to the following wiring diagrams,
related to the motor type:
(a) DC motor without brake
(b) DC motor with DC brake separately powered
In case of brake motor:
the brake is NORMALLY CLOSED (NEGATIVE action). When the power supply is switched off, the brake
is engaged. The brake opens only when power is supplied;
the brake is wired separately, make sure that the correct voltage is used;
if the brake is equipped with hand release device, make sure that the brake is engaged before starting
the linear actuator.
Figure 6.7 –Electric wiring diagrams to power supply of DC motor
Figure 6.8 –Electric wiring diagrams to motor terminal board of DC motor
IN CASE OF ELECTRIC MOTOR DIFFERENT FROM THE ABOVE MENTIONED, PLEASE REFER TO
INSTALLATION INSTRUCTIONS SUPPLIED BY THE MANUFACTURER.
K1, K2, K3 = contactor
M = motor
Br = brake

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 16
Check if the push rod shifting direction is compatible to the indications on the control unit, by powering the
electric motor on VERY BRIEFLY.
If the push rod shifting directions are not compatible:
A) ACTUATOR WITH THREE-PHASE MOTOR: invert any wire pair (U1 V1, or U1 W1, or V1 W1) into the
terminal board;
B) ACTUATOR WITH SINGLE-PHASE MOTOR: change the contact (V1 W1);
C) ACTUATOR WITH DIRECT CURRENT MOTOR: invert contacts of the two motor supply cables.
6.5 Linear actuator installation
THE BALL SCREW LINEAR ACTUATOR (ILA B SERIES) IS NOT SELF-LOCKING. BEFORE TO APPLY ANY
AXIAL LOAD ON THE PUSH ROD, LOCK THE INPUT SHAFT OR USE THE MOTOR BRAKE.
ALL MECHANICAL AND ELECTRICAL PROTECTION MUST BE INSTALLED AND ACTIVATED TO PREVENT
DAMAGE TO PERSONS OR PROPERTY.
•Check that all plant fixing elements are well machined and cleaned, and that they fit the dimensions of
the actuators fixing elements they have to be fixed to.
•If the length of the actuator have to be changed (push rod more retracted or extended) during
installation, power the motor with limited speed and torque values, in order to avoid possible damages
in case of a mechanical stop is reached.
•In case of actuators without anti-rotation device (AR), it is possible to manually screw/unscrew the push
rod to change the length of the actuator.
•In case of actuators with bellow protection (B): DO NOT TWIST THE BELLOW.
DO NOT SET THE LENGTH OF THE ACTUATOR OVER ITS EXTREME VALUES:
“Lc” = RETRACTED ACTUATOR
“La” = EXTENDED ACTUATOR
Figure 6.9 –“Lc” and “La” dimensions
Dimensions “Lc” and “La” are indicated in the technical catalogue of the product and on the check sheet
supplied with the actuator.

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 17
Fit the actuator to the plant in order to have ONLY axial load applied to the actuator.
Check the correct alignment between front and rear pins: they must be PARALLEL.
Check the correct alignment between the actuator and the moving parts.
a)
b)
Figure 6.10 –Load on actuator: a) correct; b) not correct
RIGHT WORKING OF THE ACTUATOR AND PLANT CANNOT BE GUARANTED IF SIDE OR NOT AXIAL
LOAD ARE APPLIED TO THE ACTUATOR.
6.6 Installation of rod end fitting elements
To install a fitting element on the rod end threaded bore (BA), use a wrench on the rod end (for ILA
15-25) or fix the push rod with a clamp (for ILA 50-100-150-200) to counterhold the locking torque.
In case of actuator equipped with AR (anti-rotation) device: DO NOT TRANSFER ANY TORQUE TO
THE PISTON ROD.
WARNING: in case of torque transfer into the actuator with AR device, the internal mechanical
components can be damaged.
Fix the threaded element with Loctite 270.
To unmount the element, heat the threaded area to unlock it.
Unscrew the fitting element counterholding the torque on the push rod.
F
F
F

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 18
7COMMISSIONING AND USE
SERVOMECH linear actuators are supplied lubricated and ready to be used. Before to start commissioning
and activation, the following checks must be carried out:
Shifting direction check
Check if the push rod shifting direction is compatible to the indications on the control unit, by
powering the electric motor on VERY BRIEFLY. If not, see Section 6.4.
For actuator without ANTI-ROTATION device (AR): TO ALLOW THE TRANSLATION OF THE ROD END,
THE PUSH ROD ROTATION MUST BE REACTED BY USING EXTERNAL GUIDES.
Check of extreme working positions
Check if the extreme dimensions of the actuator “Lc” and “La” (see Fig. 6.9) are compatible with
extreme positions of the plant component that has to be moved.
Measure the initial length of the actuator, then run the actuator GRADUALLY from the control unit,
in order to reach the plant to its more distant extreme position.
Check continuously the current actuator length during the motion.
Repeat the same procedure for the other extreme position.
TO AVOID DAMAGES, DO NOT TRAVEL OVER THE EXTREME STROKE VALUES Lc and La!
DO NOT REACH STROKE END MECHANICAL STOP!
Commissioning
At this stage it is possible to start commissioning:
Carry out one complete working cycle without load.
Carry out some complete working cycles, increasing gradually the load, until full load is reached.
ONLY IN CASE ON ILA A ACTUATOR (ACME SCREW DRIVE): DURING COMMISSIONING, DO NEVER
EXCEED THE MAX ALLOWED DUTY CYCLE FOR THE LINEAR ACTUATOR: 30% OVER 10 MIN TIME
PERIOD AT 25°C ENVIRONMENT. ANY ABUSE OF SUCH DUTY CYCLE CAN CAUSE OVERHEATING AND
UNINTENTIONAL PREMATURE DAMAGING!

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 19
8LUBRICATION
SERVOMECH linear actuators ILA series are supplied lubricated, with lubricants indicated in the table below:
ACTUATOR
BEARINGS
LINEAR DRIVE
PUSH ROD
GUIDES
HINGED
HEAD TF
ILA 15 A
Grease (NLGI 2 DIN
51818):
SHELL Gadus S2
V100 2
Grease (NLGI 2 DIN 51818):
ENI Grease SM 2
Also suitable:
- SHELL Gadus S2 V220D 2 (NLGI 2)
- MOBIL Mobilgrease XHP 222 Special
(NLGI 2)
- FUCHS Renolit FLM 2 (NLGI 2)
(*)
(**)
ILA 15 A
ILA 25 A
Same as
linear drive
ILA 25 A
ILA 50 A
ILA 50 A
ILA 100 A
Same as
linear drive
ILA 100 A
ILA 150 A
ILA 150 A
ILA 200 A
ILA 200 A
ILA 15 B
Grease (NLGI 2 DIN
51818):
SHELL Gadus S2
V100 2
Grease (NLGI 1 DIN 51818):
LUBCON Thermoplex ALN 1001
Also suitable:
- FUCHS Renolit AX 2P (NLGI 2)
- AGIP Grease AC 1 (NLGI 1)
- MOBIL Mobilgrease FM 101 (NLGI 1)
- KLUBER Klubersynth UH1 14-151
(NLGI 1)
(*)
(**)
ILA 15 B
ILA 25 B
Same as
linear drive
ILA 25 B
ILA 50 B
ILA 50 B
ILA 100 B
Same as
linear drive
ILA 100 B
ILA 150 B
ILA 150 B
ILA 200 B
ILA 200 B
Table 8.1 –Lubricants
(*) –Push rod guide bushes in self-lubricating material (no lubrication required).
(**) –hinged head TF does not require lubrication.
DO NOT USE LUBRICANTS DIFFERENT FROM THOSE ABOVE MENTIONED.
DO NOT MIX INCOMPATIBLE GREASES.
IF DIFFERENT LUBRICANT SHOULD BE USED, PLEASE CONTACT SERVOMECH BEFORE PROCEED.
IN CASE OF CUSTOM PRODUCT EXECUTION, THE LUBRICANTS COULD BE DIFFERENT FROM THE
STANDARD ABOVE. TO KNOW THE LUBRICANT TYPE PLEASE REFER TO THE PRODUCT CHECK SHEET
SUPPLIED WITH THE PRODUCT.

Servomech S.p.A. 21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19 20
9MAINTENANCE
THRUST BEARINGS are long-life lubricated and will not require any further relubrication. Additional
lubrication can be done only in case of verified lubricant leakage from the bearings housing. In such
a case, use the lubricant type indicated in Tab. 8.1 or an equivalent one. The quantity of lubricant to
be added depends on the leaked volume.
LINEAR DRIVE and PUSH ROD GUIDES require periodic relubrication, according to Table 9.1, or at the
latest after 1 year of time. Please use lubricant indicated in Table 8.1 or equivalent
Every 2 months time interval: visual inspections of actuator conditions, cleaning of dirty parts of the
actuator.
In case of lubricant leakage from the gearbox, contact SERVOMECH.
ACTUATOR
Lead pitch
Lubrication interval
Linear drive lubrication q.ty
Push rod guides
Hinged head
[mm]
[km of stroke]
Q.ty for actuator
stroke 100mm
Q.ty for each add.
100mm of stroke
lubr. q.ty
TF lubr. q.ty
ILA 15 A
5
5
4 cm³
2 cm³
—
—
10
10
ILA 25 A
6
6
5 cm³
3 cm³
2 × 2 cm³
—
12
12
ILA 50 A
7
7
8 cm³
4 cm³
2 × 3 cm³
—
14
14
ILA 100 A
9
9
12 cm³
6 cm³
2 × 3 cm³
Until filled
18
18
ILA 150 A
12
12
12 cm³
6 cm³
2 × 6 cm³
Until filled
24
24
ILA 200 A
12
12
18 cm³
9 cm³
2 × 6 cm³
Until filled
24
24
ILA 15 B
6
60
3 cm³
2 cm³
—
—
10
100
3 cm³
2 cm³
ILA 25 B
10
100
5 cm³
3 cm³
2 × 2 cm³
—
20
200
4 cm³
2 cm³
ILA 50 B
10
100
7 cm³
3 cm³
2 × 3 cm³
—
20
200
6 cm³
3 cm³
ILA 100 B
10
100
8 cm³
5 cm³
2 × 3 cm³
Until filled
20
200
8 cm³
4 cm³
ILA 150 B
10
100
10 cm³
6 cm³
2 × 6 cm³
Until filled
20
200
11 cm³
5 cm³
ILA 200 B
16
160
16 cm³
7 cm³
2 × 6 cm³
Until filled
20
200
16 cm³
7 cm³
Table 9.1 –Maintenance
WARNING! THE PLANT MUST BE STOPPED BEFORE BEGINNING ANY MAINTENANCE OPERATION.