Festo ESBF-LS-32, ESBF-LS-40, ESBF-LS-50, ESBF-BS-32, ESBF-BS-40 Operating Instructions 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 è www.festo.com/pk

1 Design

3

5

1

67

2 4

Fig. 1

1 piston rod
2 Thread for mounting
3 Cylinder profile
4 Pressure compensation opening (with

ESBF-32...50 in input-end cylinder cover):
– with sintered filter
– with thread (on variant S1/F1)

5 Thread for motor connection
6 Drive shaft
7 Wrench 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 (è 12 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 (è www.festo.com/catalogue).
 Do not exceed the limit values for forces and speeds when using other motors (è 12 Technical data

and 13 characteristics curves in Appendix).

4 Transport

 Take product weight into account (è 12 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 (è Assembly instructions).
Permitted motor mounting kits
(è www.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 (è Fig. 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 (è www.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 8 uniformly to the specified tightening torque.

Size 32 40 50 63 80 100

Screw 8 M6 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 (è Assembly 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 (è Tab. 2).

 Mount the attachment component to the piston rod.

Do not exceed permitted level of transverse force (deflection of
piston rod è Appendix 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 thread

1)

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
(è www.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

(è www.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 (è Operating 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,
è Tab. 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:
(è 11 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

(è Assembly 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 è 12 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 (è 4 Transport).

 Remove motor cables and mounting components.

In case of repair:
 Send product to Festo or contact Festo Service (è www.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 (è www.festo.com/catalogue).

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11 Troubleshooting

Malfunction

Possible cause

Remedy

Reversing play
too great
(è Tab. 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 (è 7 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
(è Assembly 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

(è Operating 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] è Chapter “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 torque

1)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 backlash

3)

[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 (è 7 Care and maintenance)

Tab. 7

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Electric cylinder ESBF-BS-32 ... 50

Size

BS-32 BS-40 BS-50

Spindle pitch 5 10 5 10 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] è Chapter “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 torque

1)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 backlash

3)

[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 5 10 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] è Chapter “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 torque

1)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 backlash

3)

[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

ESBF-BS/-LS-32 ... 100

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4. Feed speed v as a function of stroke length I for ESBF-BS

ESBF-BS-32-...-5P
ESBF-BS-32-...-10P

ESBF-BS-40-...-5P
ESBF-BS-40-...-10P
ESBF-BS-40-...-16P

ESBF-BS-50-...-5P
ESBF-BS-50-...-10P
ESBF-BS-50-...-20P

ESBF-BS/-LS-32 ... 100

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ESBF-BS-63-...-5P
ESBF-BS-63-...-10P
ESBF-BS-63-...-25P

ESBF-BS-80-...-5P
ESBF-BS-80-...-15P
ESBF-BS-80-...-32P

ESBF-BS-100-...-5P
ESBF-BS-100-...-20P
ESBF-BS-100-...-40P

ESBF-BS/-LS-32 ... 100

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5. Max. lateral force F as a function of dimension I for ESBF-LS/BS

ESBF-32
ESBF-40
ESBF-50/63
ESBF-80/100

Reproduction, distribution or sale of this document or communica
tion of its contents to others without express authorization is
prohibited. Offenders will be liable for damages. All rights re
served in the event that a patent, utility model or design patent is
registered.

Copyright:
Festo AG & Co. KG
Ruiter Straße 82
73734 Esslingen
Germany

Phone:
[phone]

Fax:
[phone]

E-mail:
[e-mail]

Internet:
www.festo.com