Festo ESBF-LS-32 User manual

en Operating
instructions
8076295
2018-12b
[8076297]
Electric cylinder
ESBF-BS/-LS-32 ... 100

ESBF-BS/-LS-32 ... 100
2 Festo – ESBF-BS/-LS-32 ... 100 – 2018-12b
Translation of the original instructions
Symbols: Installation and commissioning may only be per
formed in accordance with these instructions by
technicians with appropriate qualifications.
Warning
Caution
Note
Environment
Accessories
English 3.........................................................................

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English – Electric cylinder ESBF-BS/-LS-32 ... 100
Table of contents
1 Design 4..................................................................
2 Safety 5..................................................................
2.1 Use for intended purpose 5...................................................
2.2 General safety information 5..................................................
2.3 Mounting and connecting 5...................................................
2.4 Qualified specialists 5.......................................................
3 Function 6................................................................
4 Transport 6...............................................................
5 Installation 7..............................................................
5.1 Mechanical installation 7.....................................................
5.1.1 Mount product 8...................................................
5.1.2 Mount attachment components 9......................................
5.1.3 Mount accessories 9................................................
6 Commissioning 10...........................................................
7 Maintenance and care 12.....................................................
8 Disassembly and repair 13....................................................
9 Disposal 13................................................................
10 Accessories 13..............................................................
11 Troubleshooting 14..........................................................
12 Technical data 15............................................................
13 Characteristic curves 18......................................................

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Documentation on the product
For all available product documentation èwww.festo.com/pk
1 Design
3
5
1
67
2 4
Fig. 1
1piston rod
2Thread for mounting
3Cylinder profile
4Pressure compensation opening (with
ESBF-32...50 in input-end cylinder cover):
– with sintered filter
– with thread (on variant S1/F1)
5Thread for motor connection
6Drive shaft
7Wrench flats for counter holding

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2 Safety
2.1 Use for intended purpose
The electric cylinder is intended to be used for exact positioning of payloads in combination with tools
or as a drive when external guides are used. The following product features are characteristic:
– low-speeds, self-retarding (ESBF-LS with lead screw)
– high speeds, high forces (ESBF-BS with ball screw).
2.2 General safety information
 Take into consideration the legal regulations applicable for the location.
 Only use the product if it is in its original status and in an excellent technical status.
 Use the product only within the defined values (è12 Technical data and 13 characteristics curves)
 Take into account labelling on the product.
 Do not make any unauthorised modifications to the product.
 Observe other applicable documents.
 Take into consideration the ambient conditions at the location of use.
Protect the product during storage and operation from the following:
– Wetness or moisture
– Corrosive coolant or other materials (e.g. ozone)
– UV radiation
– Oils, greases and grease-solvent vapours
– Grinding dust
– Glowing chips or sparks
2.3 Mounting and connecting
 Observe tightening torques. Unless otherwise specified, the tolerance is ±20 %.
2.4 Qualified specialists
Only qualified personnel may perform installation, commissioning, maintenance and disassembly of the
product. The qualified personnel must be familiar with installation and operation of electrical and pneu
matic control systems.

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3 Function
A rotating thread drive (lead screw with ESBF-LS or ball screw
with ESBF-BS) converts the rotary movement of a motor into a
linear movement. The piston rod will then move backwards and
forwards.
The piston rod is non-rotating. The position of the piston rod
can be scanned with the aid of proximity sensors.
Fig. 2 ESBF-LS
Fig. 3 ESBF-BS
Note
The ESBF-LS is self-braking. When the input torque is not applied, the piston rod will be
braked.
The piston rod can, however, move involuntarily when:
– Vertical or diagonal mounting position of the ESBF-LS
– there is no holding torque on the drive shaft
– vibration
Note
The ESBF-BS is unbraked. When the input torque is not applied, the piston rod can be
moved freely. Self-locking of the complete system can be achieved with motors with
integrated holding brake or with high self-braking torque.
 Select the corresponding motors from our catalogue (èwww.festo.com/catalogue).
 Do not exceed the limit values for forces and speeds when using other motors (è12 Technical data
and 13 characteristics curves in Appendix).
4 Transport
 Take product weight into account (è12 Technical data).
 Secure piston rod during transport and maintain it in load-free position.

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5 Installation
5.1 Mechanical installation
Prerequisites
 Do not modify the screws and threaded pins.
Exception: Direct request to make changes in these
operating instructions.
 Mount the motor on the electric cylinder using a motor
mounting kit (èAssembly instructions).
Permitted motor mounting kits
(èwww.festo.com/catalogue).
 Connector motor cables only after the electric cylinder is
mounted.
Fig. 4
Mounting position vertical or diagonal
WARNING
Uncontrolled moved masses caused by spindle nut
fracture inside the ESBF or a toothed belt failure in
parallel configuration EAMM-U (e.g. due to wear)
Injury from hard contact, impact, crushing.
 Check if protective measures are necessary to
prevent damage (e.g. toothed latches, pins or
emergency buffers).
Where necessary, take suitable measures.
Fig. 5

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5.1.1 Mount product
Note
Pulling out of screws if cylinder is only mounted to the covers and the torque load
around the collar is too great.
 If there are heavy loads, mount the cylinder to the profile with additional mounting
components.
 Place ESBF as follows:
– all control sections are accessible
– Pressure compensating opening 4(èFig. 1) is not covered.
Interfaces for mounting components
on the cover on the profile
e.g. with flange mounting EAHH e.g. with profile mounting EAHF
8
Fig. 6
 Select mounting components or accessories (èwww.festo.com/catalogue).
 Mount the mounting components outside the positioning range (avoid collisions).
 Select mounting elements so that internal torques are braced against the housing during powerful
acceleration phases.
 Mount cylinder without distortion and deflection.
 Tighten screws 8uniformly to the specified tightening torque.
Size 32 40 50 63 80 100
Screw 8M6 M6 M 8 M 8 M10 M10
Tightening torque [Nm]
corrie
6 6 12 12 25 25
Tab. 1
Note
If an EAGF guide unit is used:
 Mount construction kits for proximity switches outside the mounting area of the
EAGF (èAssembly instructions).

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5.1.2 Mount attachment components
Fitting hoses to pressure compensation opening
For pressurising and depressurising the pressure compensation opening on ESBF-...-S1/F1:
 Tighten suitable screw connection into the thread 4.
 Connect a tube for the supply and exhaust of fresh air.
Alternatives to the routing of this hose:
– in a protected area (dust-free and dry)
– in a large expansion tank
– with low positive pressure (max. 0.2 bar) as sealing air.
Fig. 7
4
Mount attachment component
 Place the centre of gravity of the attachment component, if
possible, centrally to the piston rod.
 Transmit as little torque as possible to the piston rod. Brace
against key surface 7. Excessively high torque can damage
the mechanism inside the cylinder (èTab. 2).
 Mount the attachment component to the piston rod.
Do not exceed permitted level of transverse force (deflection of
piston rod èAppendix 13 characteristics curves).
7
Fig. 8
Size 32 40 50 63 80 100
Piston rod thread
Male thread M10x1.25 M12x1.25 M16x1.5 M16x1.5 M20x1.5 M20x1.5
Female thread1) M6 M 8 M10 M10 M12 M12
Width across flats 7 ß [mm] 10 13 17 17 22 22
Max. torque [Nm]
corrie
2.4 6.4 12 15 31 53
1) Only at ESBF-...-F
Tab. 2
5.1.3 Mount accessories
To protect the end positions against uncontrolled overtravel:
 Check whether proximity sensors are necessary (as safety limit switches or hardware limit switches).
 Use appropriate proximity switches, sensor strips or mounting construction kits. Proximity switches
for polling the internal magnet must be arranged centrally on the flat profile surface
(èwww.festo.com/catalogue).
 Use proximity sensors with normally-closed function. These protect the ESBF from overrunning of
the limit position if the proximity sensor cable is fractured.
 Avoid external influence caused by magnetic or ferritic parts in the vicinity of the proximity sensors.

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6 Commissioning
WARNING
Unexpected movement of components.
Injury due to impact or pinching.
 Protect positioning range from access
(e.g. with protective guards).
 Make sure that no foreign objects are present
in the positioning range.
 Carry out commissioning with low speeds and
torques.
Fig. 9
Note
Incorrect set values for the braking ramp in STOP statuses
(e.g. EMERGENCY OFF, Quick Stop) result in an overloading of the spindle axis and can
destroy it or drastically reduce its service life.
 Check the settings for all braking ramps in the controller or the higher-order control
system (deceleration values and jerk).
 Ensure that the retardation values (brake retardation, retardation times) are set in
such a way that the maximum input torque or “max. propulsion force” are not ex
ceeded. Take the following into account:
– Travel speed
– Moving mass
– Mounting position
 To design the spindle axis, use the Festo “Positioning Drives” design software
(èwww.festo.com).
Note
Block-shaped acceleration profiles (without jolt limitation) cause high peaks in the
motive force that can lead to an overloading of the drive. In addition, positions outside
the permissible range may occur as a result of overswing effects. A jolt-limited accelera
tion specification reduces vibrations in the entire system and has a positive effect on
stress in the mechanical system.
 Check which closed-loop controller settings can be adapted (e.g. jerk limitation,
smoothing of the acceleration profile).

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Procedure Purpose Note
1. Check travel Determine the
approach
direction of the
motor.
Even with identical control, motors of the same design can
turn in opposite directions due to different wiring.
The spindle of the ESBF turns in a clockwise direction: when
the drive shaft is turned in a clockwise direction, the piston
rod moves in the direction of the motor.
2. Reference
travel to refer
ence switch /
engine-end
limit position
Compare the real
situation to the
image in the
controller.
The reference run may only be performed towards the
reference switch (èOperating instructions of the drive
system).
Start the reference run in accordance with the operating
instructions for your motor drive system and limited to low
dynamics (e.g. with a max. speed of 10 mm/s) up to the
reference switch.
Providing the permitted impact energy is not exceeded,
èTab. 4) the reference run in conjunction with the servo
motor may be made directly against the mechanical end
position on the motor side.
3. Test run Check the overall
behaviour.
Check the following requirements:
– The piston rod moves through the intended positioning
cycle completely.
– Piston rod stops as soon as it reaches a limit switch.
After a successful test run, the electric cylinder is ready for
operation.
Tab. 3
Size 32 40 50 63 80 100
Maximum impact energy
(= ½ mass x speed2 )
[10-3 J] 0.03 0.05 0.07 0.15 0.38 0.60
Tab. 4
If the proximity sensors fail to respond:
(è11 Troubleshooting and Proximity sensor operating instructions).

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7 Maintenance and care
Fitting in a vertical or sloping position:
WARNING
Unexpected movement of components. Injury due to impacts or pinching.
When working on the product, switch off the controller and secure it to prevent it from
being switched back on accidentally.
 Examine the toothed belt of the parallel kit regularly for wear
(èAssembly instructions for the parallel kit).
Cleaning
 Clean the outside of the product with a soft cloth as required. Do not use aggressive cleaning
agents (material specifications è12 Technical data).
Lubrication of the piston rod
Note
The piston rod must always have a film of grease. A lack of grease causes the sealing
ring to wear.
If required, or if the component no longer has a layer of grease (e.g.
after cleaning)
 Grease the surface of the piston rod 1.
– Grease on the standard variant: LUB-KC1
– Grease on variant F1: LUB-E1
Fig. 10
1
Functional test
On electric cylinder with lead screw ESBF-LS:
WARNING
Unexpected movement of components. Injury due to impacts or pinching.
If a worn lead screw (ESBF-LS) breaks on a vertically or diagonally fitted ESBF, the work
mass will fall down.
 Replace the ESBF if the maximum permitted reversing play is exceeded:
Reversing backlash-During maintenance work, always measure (reversing play) on the piston rod
whenever wear is found on the lead screw. Maximum reversing play permitted is:
Size 32 40 50
Max. permissible axial play 0.62 mm 0.75 mm 1.0 mm
Tab. 5

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On electric cylinder with ball screw ESBF-BS:
Possible wear leads in the long term to increased noise and later to blockage of the ball screw.
8 Disassembly and repair
WARNING
Unexpected movement of components.
Injury due to impacts or pinching.
 When working on all products, switch off the controller and secure it to prevent it
from being switched back on accidentally.
 Observe notes on transport (è4 Transport).
 Remove motor cables and mounting components.
In case of repair:
 Send product to Festo or contact Festo Service (èwww.festo.com/sp).
Festo carries out the required repairs, fine adjustments and checks.
9 Disposal
 Dispose of the packaging and the product at the end of its useful life through environmentally
friendly recycling in accordance with applicable specifications.
10 Accessories
Note
 Choose accessories from our catalogue (èwww.festo.com/catalogue).

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11 Troubleshooting
Malfunction Possible cause Remedy
Reversing play
too great
(èTab. 5)
Wear in lead screw Replace the ESBF-LS
Running
noises or
vibrations
Tension Install ESBF so it is free of tension
(evenness of the bearing surface: ≤ 0.2 mm)
Lubricate the piston rod (è7 Maintenance and
care)
Modify travel speed
Incorrect regulator settings Change the controller parameters (only on servo
systems)
Wear Replace ESBF-BS
Piston rod
does not move
Jamming in mechanical end
position (e.g. after homing at
too high a speed or after
improper travel into an end
position during operation)
– To release a jam manually:
1. Switch off power,
2. Remove motor and coupling housing,
3. Turn drive shaft to release it
– Reduce speed for reference travel
– Set software end positions at least 0.25 mm
away from the mechanical end positions (the
stops)
Loads too high – Reduce effective load
– Reduce travel speed
– Send the ESBF to Festo for repairs
When using the parallel kit,
the pretension on the
toothed belt is too high
Reduce the pretension on the toothed belt
(èAssembly instructions for the parallel kit)
Ambient temperature too low
(increased breakaway torque
in initial run due to increasing
viscosity of the lubricants in
the spindle system)
– Reduce effective load
– Reduce travel speed
– In the case of servo motors, it may be necessary
to allow higher peak current
(èOperating instructions for the motor)
– Adjust ambient temperature
– Interpose gearbox to generate higher torque
With interposed gearbox
– Adapt lubricant
Wear on ball drive Replace ESBF-BS
Tab. 6

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12 Technical data
Electric cylinder ESBF-LS-32 ... 50
Size LS-32 LS-40 LS-50
Spindle pitch 2.5 3 4
Design Electric cylinder with lead screw:
Assembly position any
Ambient temperature [°C] 0 … +60
Storage temperature [°C] –20 … +60
Degree of protection
– IP40
K1 IP65
Relative air humidity [%] 0 … 95 (non-condensing)
Feed force F [kN] èChapter “Characteristic curves” in the appendix
Max. tensile force F [kN] 0.6 1 1.6
Max. driving torque [Nm]
corrie
1.1 2.4 4.8
Max. radial force on the
drive shaft
[N] 115 130 300
No-load driving torque1)2) [Nm]
corrie
0.1 0.2 0.3
Max. speed [m/s] 0.05
Max. rotational speed [rpm] 1200 1000 750
Max. acceleration [m/s2] 2.5
Feed constant
(spindle pitch)2)
[mm/rev] 2.5 3 4
Repetition accuracy [mm] ± 0.05
Reversing backlash3) [mm] 0.1
Max. angle of rotation at
the piston rod
[°] ± 0.25 ± 0.20 ± 0.15
Note on materials Contains PWIS (paint-wetting impairment substances)
Information on materials
Cylinder barrel, cover Aluminium,
Ball bearing, screws, spindles Steel
Piston rod Stainless steel
Spindle nut POM
Weight
With 0 mm stroke [kg] 0.667 1.079 1.716
Per 10 mm stroke [kg] 0.034 0.048 0.067
1) At a spindle speed of 200 rpm
2) Nominal value, varies due to component tolerances
3) In new condition, max. permitted reversing play (è7 Care and maintenance)
Tab. 7

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Electric cylinder ESBF-BS-32 ... 50
Size BS-32 BS-40 BS-50
Spindle pitch 510 510 16 5 10 20
Design Electric cylinder with ball screw
Assembly position any
Ambient temperature [°C] 0 … +60
Storage temperature [°C] –20 … +60
Degree of protection
– IP40
K1 IP65
Relative air humidity [%] 0 … 95 (non-condensing)
Feed force F [kN] èChapter “Characteristic curves” in the appendix
Max. tensile force F [kN] 1 3 2.6 5 4.5
Max. driving torque [Nm]
corrie
1.1 2 3 5.6 7.7 4.8 9.2 16.3
Max. radial force on the
drive shaft
[N] 115 130 300
No-load driving torque1)2) [Nm]
corrie
0.1 0.2 0.3
Max. speed [m/s] 0.55 1.1 0.4 0.8 1.2 0.3 0.6 1.2
Max. rotational speed [rpm] 6600 4800 3600
Max. acceleration [m/s2] 5 15 5 15 25 5 15 25
Feed constant
(spindle pitch)2)
[mm/rev.] 5 10 5 10 16 5 10 20
Repetition accuracy [mm] ± 0.01
Reversing backlash3) [mm] 0.03 0.04 0.03 0.04 0.03 0.04
Max. angle of rotation at
the piston rod
[°] ± 0.25 ± 0.20 ± 0.15
Note on materials Contains PWIS (paint-wetting impairment substances)
Information on materials
Cylinder barrel, cover Aluminium,
Screwing Steel
Piston rod Stainless steel
Spindle, spindle nut, ball bearing Rolled steel
Weight
With 0 mm stroke [kg] 0.781 1.237 1.982
Per 10 mm stroke [kg] 0.033 0.047 0.065
1) At a spindle speed of 200 rpm
2) Nominal value, varies due to component tolerances
3) In new condition
Tab. 8

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Electric cylinder ESBF-BS-63 ... 100
Size BS-63 BS-80 BS-100
Spindle pitch 510 25 5 15 32 5 20 40
Design Electric cylinder with ball screw
Assembly position any
Ambient temperature [°C] 0 … +60
Storage temperature [°C] –20 … +60
Degree of protection
– IP40
K1 IP65
Relative air humidity [%] 0 … 95 (non-condensing)
Feed force F [kN] èChapter “Characteristic curves” in the appendix
Max. tensile force F [kN] 7 7 6 12 12 10 17 17 14.5
Max. driving torque [Nm]
corrie
7 13.1 26.5 11.9 33.7 56.6 16.9 63.7 102.6
Max. radial force on the
drive shaft
[N] 700 1100 1100
No-load driving torque1)2) [Nm]
corrie
0.4 0.45 0.5 0.5 0.6 0.65 0.7 0.9 1.0
Max. speed [m/s] 0.27 0.53 1.35 0.21 0.62 1.34 0.16 0.67 1.34
Max. rotational speed [rpm] 3250 3220 3260 2530 2515 2515 2010 2010 2010
Max. acceleration [m/s2] 5 15 25 5 15 25 5 15 25
Feed constant
(spindle pitch)2)
[mm/rev.] 5 10 25 5 15 32 5 20 40
Repetition accuracy [mm] ±0.015 ±0.01
Reversing backlash3) [mm] 0.03 0.04 0.03 0.04 0.03 0.04
Max. angle of rotation at
the piston rod
[°] ±0.4 ±0.5 ±0.5
Note on materials Contains PWIS (paint-wetting impairment substances)
Information on materials
Cylinder barrel, cover Aluminium,
Screwing Steel
Piston rod Stainless steel
Spindle, spindle nut, ball bearing Rolled steel
Weight
With 0 mm stroke [kg] 3.17 7.39 11.12
Per 10 mm stroke [kg] 0.087 0.155 0.193
1) At a spindle speed of 200 rpm
2) Nominal value, varies due to component tolerances
3) In new condition
Tab. 9

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13 Characteristic curves
1. Max. feed force F as a function of stroke length v for ESBF-LS
ESBF-LS-32
ESBF-LS-40
ESBF-LS-50
2. Max. compressive force F as a function of dimension I for ESBF-LS
ESBF-LS-32
ESBF-LS-40
ESBF-LS-50

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3. Max. compressive force F as a function of dimension I for ESBF-LS
ESBF-BS-32-...-5P/10P
ESBF-BS-40-...-5P/10P
ESBF-BS-40-...-16P
ESBF-BS-50-...-5P/10P
ESBF-BS-50-...-20P

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ESBF-BS-63-…-5P/10P
ESBF-BS-63-…-25P
ESBF-BS-80-…-5P/15P
ESBF-BS-80-…-32P
ESBF-BS-100-…-5P/20P
ESBF-BS-100-…-40P