P R O D U C T D ATA S H E E T

ACTUATOR
LA31
Features:
• 24 V DC permanent magnet motor
• Thrust up to 6000 N in push and up to 4000 N
in pull
• Electric chromated steel piston rod eye with slot
• High-strength plastic housing protects motor
and gears
• Elegant and compact design with small
installation dimensions
• Standard protection class: IPX4
• Colour: black
• 2.25 m straight cable
• Built-in limit switches (not adjustable)
• Scratch and wear-resistant powder painting on
outer tube Ø30 mm
• Zinc alloy back fixture
• Strong wear and corrosion resistant
stainless steel inner tube
• Noise level 48 dB (A); measuring method DS/EN
ISO 3746, actuator not loaded
• Winding isolation class F (155 degrees)
Options:
• LA31 Basic version CARELINE® (no slot in piston
rod eye)
• Flexible back fixture
• Reed switch (8 pulses per spindle revolution) for
exact positioning of memory control and
compatibility with CB9P)
• Hall positioning (for use with CB6 OBF,
CB16 OBF, CB20)
• Fast motor
• Mechanical splines (the actuator can only push)
• Jack plug for use with other control boxes than The LA31 actuator is a very quiet and powerful
CB9 actuator designed for a variety of applications such
• Mini-fit cable for use with OpenBus™ as furniture, care or hospital beds. The standard
• Protection class IPX6 LA31 actuator is available for both the HOMELINE®,
• IPX6 Washable: only with cable placement CARELINE® TECHLINETM and DESKLINE® product
standard and forward ranges.
• Quick release on LA31 (different types of
Due to its high capacity, design and protection class
release handle) only available in grey
up to IP66 Washable, the CARELINE® actuator is ideal
• 0.2/0.4 m coiled cable with DIN or Jack plug
for the care sector e.g. for beds. The CARELINE® LA31
• Colour: grey
actuator is available as a standard or a Basic version.
• Safety nut in push
The standard LA31 actuator features known parts
• Mechanical end stop for first failure safety
such as piston rod eye with slot. The LA31 actuator
• Exchangeable cables (also for DIN Reed and
has exchangeable cables and is ideal in combination
protection class IPX6 Washable)
with OpenBus™ control boxes.
• Emergency lowering
...continued

Usage:
• Duty cycle: Max 10% or 2 minutes continuous use
followed by 18 minutes not in use
• Duty cycle of fast motor is only 5%
• Ambient temperature +5°C to +40°C
• The CARELINE system has full compliance with EN 60601-1

Technical specifications:

Max load Typical Typical Self lock Max

Spindle pitch (mm)

[N] Amp. speed [N]

Unloaded
Spindle type

F ull load

F ull load
Pus h

Pus h
Pull

Pull
Standard 24V motor
31.1 3 6000 4000 4.0 6.2 3.2 6000 4000
31.2 5 4000 4000 3.1 11.2 5.4 2000 2000
31.2 With brake 5 4000 4000 3.3 11.2 5.6 4000 4000
31.3 With brake 9 1500 1500 2.5 19.4 10.5 1500 1500
31.4 With brake 4 6000 4000 4.1 8.2 5.4 6000 4000
31.6 With brake 12 1000 1000 2.4 26.6 14.5 1000 1000
31.7 With brake 6 2500 2500 2.5 13.2 6.8 2500 2500
Fast 24V motor
31.1 3 6000 4000 4.2 8.2 4.9 6000 4000
31.2 5 4000 4000 3.7 14 6.9 2000 2000
31.2 With brake 5 4000 4000 4.0 14 6.4 4000 4000
31.3 With brake 9 1500 1500 2.9 26.6 13 1500 1500
31.4 With brake 4 6000 4000 5 10.7 5.3 6000 4000
31.6 With brake 12 1000 1000 2.8 32.6 17.6 1000 1000
31.7 With brake 6 2500 2500 3.1 16.7 8.3 2500 2500

Standard 24V motor and Quick release

31.2 with Quick release, max.
release force: 75 kg 5 3500 200 3.3 11.2 5.6 3500 -
31.3 with Quick release, max.
release force: 75 kg 9 1500 200 2.5 19.4 10.5 1500
31.7 With Quick Release
max release force: 50 kg 6 2500 200 2.5 13.2 6.8 2500 -

Fast 24V motor and Quick release

31.2 with Quick release with max.
release force: 75 kg 5 3500 200 4 14 6.4 3500 -
31.3 with Quick release with max.
Release force: 75 kg 9 1500 200 2.9 26.6 13 1500 -
31.7 With Quick Release with double
worm gear max. release force: 50 kg 6 2500 200 6 15 10 2500 -

Comments to table:
• The above values are with a CB9 as the power supply.
• LINAK control boxes are designed so that they will short-circuit the motor terminals (poles) of the actuator(s), when the
actuator(s) are not running. This solution gives the actuator(s) a higher self-locking ability. If the actuator(s) are not
connected to a LINAK control box, the terminals of the motor must be short-circuited to achieve the selflocking ability
of the actuator.
• When the load in push is above 4000 N (max. 6000 N), the max. stroke length is 250 mm.
LA31 CARELINE
Ordering example

31

Cables
Jack-cables Mini-fit cables DIN-Cables When mounting CB
0 = Straight 2.25 m For CB20,CB16, A = Straight 2.25 m E = Straight 0.25 m (IP54 / IP66)
1 = Straight 1.0 m CB6 (6 wires) B = Straight 1.0 m
2 = Coiled 0.40 m I = Straight 1.0 m C = Coiled 0.40 m Exchangeable cables
3 = Coiled 0.20 m L = Coiled 0.40 m D = Coiled 0,20 m K = 0.08 m with Hall feedback for CB6 OBF,
6 = Straight 1.50 m (Pending*) E = Straight 0.25 m CB16 OBF, CB20
7 = Straight 0.75 m M = Straight 2.25 m F = Straight 1.50 m P = Mini-fit cable, 0.08 m (Without Hall feedback-
8 = Straight 0.5 m G = Straight 0.75 m REED feedback possible)
H = Straight 0.50 m

IP-Degree: 2 = IPX6
4 = IPX4
9 = IPX6 Washable

Motor type: 0 = 24VDC Standard

3 = 24VDC. Basic fast motor L3

Stroke length: XXX = mm

Brake: 0 = None
1 = Brake Push
2 = Brake Pull

Option: Spindle 0 = None

1 = Safety Nut
2 = Splines
3 = Splines with safety nut
4 = Mechanical End Stop
5 = Mechanical End stop + Safety Nut
6 = Mechanical End stop + Splines + Safety Nut

Colour: - = Black
+ = Grey

Option: 0 = None
A = Quick Release Internal - pos. A K = Quick Release Bowden cable (Q1)
B = Quick Release Internal - pos. B L = Quick Release Side grip (Q3)
C = Quick Release Internal V0 - pos. A M= Quick Release without grip (Q0)
D = Quick Release Internal V0 - pos. B N= Quick Release side grip V0 (Q3)
E = Emergency lowering P = Quick Release without grip V0 (Q0)
F = Quick Release Std. Grip V0 (Q2) R = REED (not for OPENBUS)
H = Hall positioning for use with S = V0 plast
CB6 OBF, CB16 OBF, CB20 T = V0 plast + Reed
I = Quick-Release Std. Grip (Q2) U= V0 plast + Hall positioning for use with
J = Q.Release Bowden Cable V0 (Q1) CB6 OBF, CB16 OBF, CB20

Piston rod eye: 0 = Standard with slot (and Quick release)

1 = Standard solid
2 = Standard painted
3 = Standard chromatering

Back fixture: 1 - 2 = Standard with 6.1 mm slot, ø10.1 mm hole

5 - 6 = Flexible, ø10.1 mm hole
7 - 8 = Solid, ø12.1 mm hole
A - B = Standard, 10.5 mm slot, 12.2 mm hole

Spindle type: 1 = 3 mm
2 = 5 mm
3 = 9 mm
4 = 4 mm
6 = 12 mm
7 = 6 mm

Actuator type: 31 = LA31

Option H and U: only together with exchangeable cables K (Hall positioning for use with
CB6 OBF, CB16 OBF, CB20)
Dimensions LA31

Installation dimension (± 2 mm) = Stroke + addition

Standard installation dimensions with different combinations of Piston Rod Eyes and back fixtures to LA31.

LA31 Splines + EL
LA31 Standard LA31 Splines LA31 External Quick release LA31 Internal Quick release + Mech. End-stop
+ 50 mm Overlap
Stroke Stroke Stroke Stroke Stroke Stroke Stroke Stroke Stroke Stroke
length>115 mm length<115 mm length>100 mm length<100 mm length>115 mm length<115 mm length>115 mm length<115 mm length>100 mm length<100 mm
Eye

0, 1, 2 and 3 0, 1, 2 and 3 0, 1, 2 and 3 0, 1, 2 and 3 With QR With QR 0, 1, 2 and 3 0, 1, 2 and 3 0, 1, 2 and 3 0, 1, 2 and 3

Back Fixture
1/2 and 7/8 S + 173 mm 288 mm S + 189 mm 289 mm S + 274 mm 374 mm
5/6 S + 173 mm 288 mm S + 189 mm 289 mm S + 227 mm 342 mm S + 173 mm 288 mm S + 274 mm 374 mm
A/B S + 176 mm 291 mm S + 192 mm 292 mm S + 277 mm 377 mm

Min. inst. dim. = 288 mm., with splines = 289 mm., with quick release (ext.) = 342 mm.
Min. installation dimension type I, K, L, M = 342 mm
Min. installation dimension type A, B = 288 mm
• With mechanical end-stop the installation dimension is increased by 20 mm.
• With Emergency Lowering the installation dimension is increased as shown above, include SPLINE,
MECHANICAL END-STOP + 50 mm OVERLAP (20 mm from mechanical endstop is included in the 50 mm).

Installation dimensions - explanation of table.

LA31 Standard:
With a stroke length greater than 115 mm, the installation dim. = Stroke length + 173 mm (+ 176 mm with an
A / B type back fixture).
With a stroke length of 115 mm or less the installation dim. = 288 mm (291 mm with A / B type back fixture).
LA31 Splines:
With a stroke length greater than 100 mm, the installation dim. = Stroke length + 189 mm (+ 192 mm with
A / B type back fixture).
With a stroke length of 100 mm or less the installation dim. = 289 mm (292 mm with A / B type back fixture).
LA31 External Quick Release:
With a stroke length greater than 115 mm, the installation dim. = Stroke length + 227 mm (with type 5 / 6
back fixture). With 115 mm or less the installation dim. will be 342 mm (with type 5 / 6 back fixture).
LA31 Internal Quick Release:
With a stroke length greater than 115 mm, the installation dim. = Stroke length + 173 mm (with type 5 / 6
back fixture). With 115 mm or less the installation dim. will be 288 mm (with type 5 / 6 back fixture).
Mounting bracket instructions:

Piston rod Application mounting bracket

Note the recommended design for

the mounting bracket hole
To avoid damage to the actuator.
When the application is in the “rest” position there should be no load / tension on the actuator.

Piston Rod Eyes:

Quick releases:
8

Quick release
• LA31 with external quick release, types I, K, L, and M can maximum pull 200 N. LA31 with quick release
types A and B is not designed for use in pull.
• The necessary release force on an actuator with 5 mm pitch is 75 kg for 6 mm pitch = 50 kg.
• It is not possible to combine splines with the external quick release.
• LA31 with quick release is always with brake (push).
• The flexible back fixtures (05 or 06) must be standard when the LA31 is equipped with quick release.
• With QR types A and B, when operating the QR function the QR must be activated all the way down.
Dimensions: LA31 with internal quick release

Type A Type B

Dimensions: LA31 with CB9 LA31 with exchangeable cable connector and ring:

Locking ring

Exchangeable cable
Exchangeable cables
Article number: Description: Colour: Length (mm):
00914572 DIN plug / minifit plug (2 wires) Grey 2100 mm straight
00914624-200 DIN plug / minifit plug (2 wires) Grey 200 mm coiled
00914624-400 DIN plug / minifit plug (2 wires) Grey 400 mm coiled
00914573 JACK plug / minifit plug Grey 2100 mm straight
00914622-200 JACK plug / minifit plug Grey 200 mm coiled
00914622-400 JACK plug / minifit plug Grey 400 mm coiled
00914571 DIN plug / minifit plug (2 wires) Black 2100 mm straight
00914623-200 DIN plug / minifit plug (2 wires) Black 200 mm coiled
00914623-400 DIN plug / minifit plug (2 wires) Black 400 mm coiled
00914569 JACK plug / minifit plug Black 2100 mm straight
Locking ring:
00914621-200 JACK plug / minifit plug Black 200 mm coiled
Locking ring must be
00914621-400 JACK plug / minifit plug Black 400 mm coiled
ordered separately. Part
no. 0961006-B (for an
Exchangeable Reed cables
individual locking ring),
00914668-200 DIN Reed / minifit plug Grey 200 mm coiled please order in multiples
00914668-400 DIN Reed / minifit plug Grey 400 mm coiled of 100 pcs.
00614667-200 DIN Reed / minifit plug Black 200 mm coiled Remember to ensure the
00914667-400 DIN Reed / minifit plug Black 400 mm coiled locking ring is in position
00914666 DIN Reed / minifit plug Grey 2100 mm straight when connecting cables.
00914665 DIN Reed / minifit plug Black 2100 mm straight

Exchangeable cables from OPENBUS™ CB / CBJH to actuator.

Article number: Description: No. of wires: Colour: Length (mm):
0694003-300 Minifit to minifit 6 Grey 300 mm straight
0964003-500 Minifit to minifit 6 Grey 500 mm straight
0964003-1000 Minifit to minifit 6 Grey 1000 mm straight
0964003-1250 Minifit to minifit 6 Grey 1250 mm straight
0964003-2500 Minifit to minifit 6 Grey 2500 mm straight
0964002-200 Minifit to minifit 6 Grey 200 mm coiled
0964002-400 Minifit to minifit 6 Grey 400 mm colied

LA31 with Emergency lowering: The purpose of the EL (Emergency Lowering) is in case of a power-
failure, to be able to mechanically lower a patient by turning the EL
part in the clockwise direction until the actuator is fully lowered.
The EL part substitutes the std. piston rod eye, and its function is
intended for patient hoists. In normal operation the EL part will
work as a piston rod eye, but in a failure condition the actuator can
be lowered by turning the outer ring manually.

Dimensions: Features:
• Mechanical lowering of actuator
• Zinc piston rod eye - slotted
• With Ø10.1 POM bushings
• Max. 6000N in push
• Only 3 mm and 4 mm pitch actuators
• IPx4
• Grey - RAL 7035
Precautions:
• An addition of 35 mm to installation dimension compared to
standard (with spline)
• Only for push applications
• Use spline actuators
Drawing no. 03111202 • Cannot be retro fitted
 Back fixtures:

Curves:

LA31 24V std. motor current v´s load

LA31 24V Fast motor current v´s load
4,5
4 mm brake 6
4
3 mm brake 4 mm brake
3,5 5
5 mm brake 5 mm brake
3 9 mm brake 6 mm brake 5 mm brake
4
Ampere

12 mm brake 5 mm brake
2,5
Ampere

3 mm brake
9 mm brake 6 mm brake
12 mm brake
2 3
1,5
2
1
0,5 1
0
0
0 1000 2000 3000 4000 5000 6000 7000
0 1000 2000 3000 4000 5000 6000 7000
Load (N)
Load (N)
Copyright © LINAK 2009.12 MA M9-02-058-H . Chapter 5.8.2

LA31 24V Std. motor speed v´s load

LA31 24V Fast motor speed v´s load
30
35
12 mm brake
25 30 12 mm brake

20 25
Speed (mm/s)

Speed (mm/s)

20
15 6 mm brake
9 mm brake 9 mm brake
15
10 6 mm brake
5 mm brake 5 mm brake
5 mm brake 10 5 mm brake
4 mm brake
4 mm brake
5 5
3 mm brake
3 mm brake
0
0
0 1000 2000 3000 4000 5000 6000 7000
0 1000 2000 3000 4000 5000 6000 7000

Load (N) Load (N)

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subject to frequent modifications and changes without prior notice. Therefore, LINAK cannot
guarantee the correct and actual status of said information on its products.
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mentioned above, guarantee the availability of any particular product. Therefore, LINAK reserves
the right to discontinue the sale of any product displayed on its website or listed in its catalogues
or other written material drawn up by LINAK.
All sales are subject to the Standard Terms of Sale and Delivery for LINAK. For a copy hereof,
please contact LINAK.