roba -linearstop - industrial clutch

your reliable partner

K.381.V04.EN

ROBA®-linearstop

Hydraulic, pneumatic andelectromagneticsafety brakes

www. .com


Construction and Development

From Prototype to Finished Product

Product Data: Our 24-hour Service

Unsurpassed - Our Standard Programme

Innovations for Your Success

With our innovative and economical solutions, we are able to set new records in the field of power transmission. Our many worldwide patents prove our constant ambition of developing better and technologically superior products.

Highly qualified engineers, high-performance 3D-CAD- systems and the most up-to-date FEM calculation aids used in our Development and Construction departments mean that our business is perfectly equipped to offer our customers effective solutions.

Experts for all Power Transmission Questions

Exploit our know-how, gained by decades of experience in the development, production and application of drive technology products. Our experts in Construction and Development are happy to advise you personally and competently when selecting and dimensioning the drive solution you require.

No mayr® product is released onto the market until it has proved its functional capabilities and reliability in extreme, long-term tests.

The spectrum of testing equipment is as varied as our range of products:

Friction work test standsWear test stands�Noise measurement room with highly accurate noise measurement inspection devicesTorque measurement stands up to 200.000 Nm�Impact and alternating load test standsForce test standsLinear movement test standsContinuous performance test standsMagnetic flow measurement test standsHigh-speed test stands up to 20.000 rpm�Misalignment and angular misalignment test stands�Load and measurement test stands for DC motors

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Our website offers you detailed information 24 hours per day, 365 days per year with no delays. Here you can find not only the latest catalogues and technical documentation but also CAD-files for cost-saving construction of our products.

For safety clutches, safety brakes, backlash-free shaft couplings and high-quality DC drives, we offer you a complete product range with market and branch optimised constructions and designs.

Illustration of the stress distribution in a backlash-free shaft connection

2


A Worldwide Presence

Total Quality Management

Individual and Flexible Logistics

Our Sales and Service network is constantly expanding. We guarantee you and your customers almost all over the world local representation. With eight branch firms in France, Switzerland, Italy, England, Poland, the USA, Singapore and China as well as around 30 representatives and eight subsidiaries in Germany, we provide local service for our customers in all important industrial areas.

Product Quality

Every delivery which leaves our firm has been subjected to a careful quality inspection, meaning that you are able to rely 100 % on mayr® products. If required, we pre-adjust our clutches and brakes accurately to the requested values and confirm the product characteristics with an Inspection Report.

Quality Management

mayr® uses the term quality to describe its products and services. Certification of our quality management confirms the quality-consciousness of our colleagues at every level of the company.

Our integrated management system is certified according to DIN EN ISO 9001:2000 (Quality) and DIN EN ISO 14001 (Environment) and complies with the OHSAS 18001/OHRIS (Occupational Health and Safety) demands.

Flexible and optimally qualified colleagues ensure that your order is delivered according to schedule and with the most appropriate delivery method. We take into account your individual packaging and dispatch regulations as a matter of course. Our modern high rack warehouse has a permanently available stock of our wide standard product selection.

And if you are really in a hurry, simply use our uniquely-quick basic product delivery service!

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Versatile use as safety brake or clamping unit

ROBA®-linearstop The perfect safety brake for linear-moving axes

As a new brake system, the ROBA®-linearstop offers unique possibilities for increasing the safety of machinery. As a compact brake unit it can be integrated into already existing machinery and system constructions easily, quickly and without extensive adjustment work. The unit having a direct effect on the rod brakes independently from the drive system. The ROBA®-linearstop pneumatic can be attached to standardized cylinders acc. ISO 15552.

The new ROBA®-linearstop pneumatic is not only a holding device, but can also brake dynamically on a rod. The system has been designed according to the “Principles for the inspection and certification of pneumatic braking/holding devices with safety function for linear drives” of the German Trade Association Institute for Work Safety (BIA Berufsgenossenschaftliches Institut für Arbeitsschutz) and has been tested by the TÜV-SÜD (German Technical Inspectorate).

The new electromagnetic ROBA®-linearstop is also designed as a clamping/brake unit.

Anordnung der hydraulisch betätigten Sicherheitsbremse ROBA®-linearstop in einer Universaldrehmaschine.

Kolbenstange einseitig fixiert•

ROBA®-linearstop im Dauerversuch auf Fallprüfstand

Auf dem speziell für Linearbremsen konzipierten mayr®-Fallprüf- stand können Bremskraft, dynamischer Bremsverlauf, Schalt-zeiten und Positioniergenauigkeit ausführlich untersucht werden.

Arrangement of the hydraulically actuated safety brake ROBA®-linearstop in a universal lathe

Piston rod secured on one side•

ROBA®-linearstop in an endurance test on a drop test stand

On the mayr® drop test stand specially designed for linear brakes, the braking force, dynamic braking path, switching times and position accuracy can be tested extensively.


4

ROBA®-linearstop Hydraulic – Pneumatic – Electromagnetic

Highlights and Advantages

Safety brake system acc. fail-safe principleBacklash-free force transmission having an effect on both sidesNo self-reinforcement during clampingClearing the clamping device is not necessaryMaximum performance densitySuitable for EMERGENCY STOP braking actions

r

r

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r

r

r

ROBA®-linearstop hydraulicType �80.0_ _.0

Clamps a piston rod via a spring-loaded device at the exact position required and backlash-free. The brake is opened with hydraulic pressure of 60 – 75 bar.Suitable for EMERGENCY STOP braking actions. Nominal holding force: 10000 – 35000 NFor data and description, please see pages 6/7.

ROBA®-linearstop pneumaticType �81. 0 _ _ . 0

Clamps a piston rod via a spring-loaded device at the exact position required and backlash-free. The brake is opened with a pneumatic pressure of 4 – 6 bar.Suitable for EMERGENCY STOP braking actions.

Type �81. 1 _ _ . _ for dynamic braking actions(acc. Trade Association test regulation)

Clamps and brakes a piston rod via a spring-loaded device at the exact position required and backlash-free. The brake is opened with pneumatic pressure of 4 – 6 bar. If the Technical Data are observed, more than 20,000 dynamic braking actions are possible (tested by the TÜV-SÜD, German Technical Inspectorate).Nominal holding force: 800 – 40000 NFor data and description, please see pages 8/9.

Suitable for dynamic braking actions

Minimum reaction timesIntegrated switching condition monitoring possibleLong service lifetimeCan easily be integrated into existing constructions

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ROBA®-linearstop electromagneticType �82.0_ _._ (Clamping unit)Type �82.1_ _._ (for dynamic braking)

Clamps and brakes under spring load a piston rod accurately and backlash-free. Brake is opened through electromagnetic actuation with DC current.

Nominal holding force: 2500 – 17500 NFor data and description, please see pages 12/13.


�

m

ØF

Ød

t

m1

L

D

60° (6 x 60°)

7

- +

Fig. 1

Fig. 2

Technical DataSize

10 20 �0

Nominal holding force F 1) [N] 10000 20000 35000

Weight [kg] 4,9 11 14,7

Operating pressure 2)

min. [bar] 60 70 75

max. [bar] 150 150 160

Threads for hydraulic connection

m1 1/4” 3/8” 3/8”

Tightening torqueScrew plug

Item 7[Nm] 24 48 48

Pressure medium Hydraulic oil acc. DIN 51524-1

Absorption volume [cm3] 4 7 11

Ambient temperature [°C] -10 to +60

Dimensions [mm]

Size

10 20 �0

D 91 112 140

d 30 30 40

F 63 82 115

L 131 163 172

m 6 x M8 6 x M8 6 x M10

t 14 14 14

Order Number

__ / 3 8 0 . 0 __ __ . 0

Sizes1020�0

Standard (without additional part) Integrated emergency release (Fig. 5, Item 8)

01

01

Standard (without additional part) Switching condition monitoring (Fig. 4, Item 10)

Example: Order number 10 / �80.000.0

ROBA®-linearstop hydraulic

1) Minimum holding force when the brake is not pressurised and when the brake rod is dry or moistened with mineral oil.

2) Please contact the company mayr® if - a nominal holding force other than the one stated is required - the required minimum operating pressure is not available.

Max. screw-in depth

Hydraulic connection

m1

Fixing screwm

Position of the hydraulic connection to a fixing screw ±15° (Size 10 ± 30°)


We reserve the right to make dimensional and constructional alterations.

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Options (see also Order Number, page 4)

Switching condition monitoring (Type 380.0_1.0)

Integrated emergency release: EMERGENCY release screw (Type 380.01_.0)

3/2-directional control valveNon-return valve (in case of pressure fluctuations)

Source of pressure

Fig. 4 Fig. �

*) Piston rods can be delivered as piece goods. Please contact the responsible sales employee or the mayr® company directly.

Brake Rod

A hard chrome-plated piston rod is used as a brake rod.

Piston rod requirements*

➔�see page 8

At higher loads, we recommend using a higher strength material.

For brake installation, we recommend an insertion chamfer on the brake rod of min. 3 x 20 ° (Fig. 12).

Friction value reducing residues on the brake rod must be avoided. Danger of load crashes.

Maintenance/Switching Frequency

The ROBA®-linearstop is designed for a switching frequency of 200.000 switching actions (higher switching frequency on request).

The ROBA®-linearstop is mainly maintenance-free.

The brake rod must be checked regularly (at least every 6 months) for contamination with friction value-reducing materials; if necessary, it must be cleaned (e.g. using a cleaning spray) and then moistened with a rag in mineral oil (e.g. greasing oil or hydraulic oil).

In case of very dusty or dirty conditions or in extreme ambient conditions, special maintenance work is necessary (please contact the manufacturers).

For permitted friction work in case of EMERGENCY STOP braking actions, please contact the manufacturers.

State of Delivery

ROBA®-linearstop brakes are manufacturer-assembled ready for installation and set to the nominal holding force stipulated in the order.If the customer does not stipulate a force adjustment in the order, the brake is set to the maximum nominal holding force acc. Table “Technical Data”.

Important!

If installation is to be carried out without the application of pressure, 3 installation screws (not included in delivery) are required. Screws M12 (on Size 10) and M16 (on Sizes 20 and 30) with a minimum thread length of 40 mm can be used as installation screws. Before initial operation, please read and observe the respective Installation and Operational Instructions.

Function

The ROBA®-linearstop which is closed with a spring-loaded device and opened hydraulically clamps a customer-side provided brake rod steplessly and backlash-free.

Due to the spring-loaded system, the fail-safe principle is guaranteed, and the ROBA®-linearstop works as a safety brake. For the required release pressure (operating pressure), please see Table “Technical Data”.The max. sliding speed is 2m/s.

Controls (Fig. �)

The company mayr® recommends hydraulic controls as shown in Fig. 3. During every operating movement of the brake rod, the 3/2 directional control valve is switched electrically and the linear brake is released. In all other operating conditions, the brake rod is held by the linear brake.

Recommendations:

Pressure fluctuations can be reduced by a non-return valve.In order to guarantee the fastest possible switching of the brake, the largest possible conductor cross-section should be used in the area of the return line. Furthermore, do not install any choke valves in this area and keep the hydraulic lines between the brake and the valve as short as possible!

••

Fig. �

Yield point min. 520 N/mm2 (e.g. 42CrMo4)

Technical Explanations


810

�

D

30° 30°

D1

120° (3 x 120°)

t

m1

mØd

ØF

L

h

may

r

TK D3

TK

D2

L1

D2

m2

TK D3

TK

D2

L1

D2

m2

Fig. �

ROBA®-linearstop pneumaticCan be attached to standardized cylinders acc. ISO 1��2

Position of the compressed air connection to a fixing screw ± 30°

Max. screw-in depth

Order Number

StandardSwitching condition monitoring

01

01

StandardAdaptor for standard cylinder �)

__ / 3 8 1 . __ __ __ . __ / __ / __

Sizes 1)

�0to80

Clamping unit

Brake unit01

01 2

Nominal holding force Standard Increased Maximum

Operating pressure

Nominal holding force

see “Technical Data“

Example: Order number �0 / �81.121.0 / �,0 / 10900

Fig. �: Adaptor for standardized cylinder (can be attached to standardized cylinder acc. ISO 15552)

1) For other construction sizes, please contact mayr® power transmission2) The plug-in screw connection can be screwed onto both sides (not available on Size 30).3) Size 40 with adaptor for standard cyclinder can only be delivered with angle plug (see “Options”).

Plug-in screw connection 2)

Acc. TA test regulation

TÜV tested


8

1) Type 381.0 Nominal holding force when the brake is not pressurised and when the brake rod is dry or moistened with mineral oil.2) Type 381.1 Nominal holding force when the brake is not pressurised and when the brake rod is dry.3) Please contact the company mayr® if - a nominal holding force other than the one stated is required - the required minimum operating pressure is not available.4) At a switching frequency > 200.000, please reckon with a nominal holding force reduction of 20 %.

Technical DataSize

20 �0 40 �0 �0 80

Nominal holding force 1) 2) 4)

(Minimum holding force)

FNenn [N]

(the nominal holding force is adjusted at the place of manufacture depending on the existing operating pressure 3))

4,0 bar

Type �81._0_._ 450 800 1500 4600 7500 12500

Type �81._1_._ 625 1100 2100 6300 10000 17500

Type �81._2_._ 750 1400 2650 8200 13000 23000

4,� bar

Type �81._0_._ 525 950 1800 5300 8500 14500

Type �81._1_._ 725 1250 2400 7300 11600 20000

Type �81._2_._ 875 1600 3050 9500 15200 26500

�,0 bar

Type �81._0_._ 575 1050 2000 6000 9600 16500

Type �81._1_._ 800 1450 2700 8300 13300 23500

Type �81._2_._ 1000 1800 3500 10900 17500 30500

�,� bar

Type �81._0_._ 650 1200 2250 6700 10800 18500

Type �81._1_._ 900 1550 3000 9400 15000 26000

Type �81._2_._ 1100 2000 3950 12300 19700 35000

�,0 bar

Type �81._0_._ 700 1300 2500 7500 12000 21000

Type �81._1_._ 975 1750 3400 10500 16700 30000

Type �81._2_._ 1200 2200 4400 13800 22500 40000

Max. operating pressure [bar] 8

Weight [kg] Type �81._0_._ 0,81 1,2 2 6 10,5 19

Type �81._1_._ 0,9 1,4 2,3 6,6 11,5 21

Type �81._2_._ 1,0 1,5 2,5 7,1 12,5 23

Absorption volume [cm�] Type �81._0_._ 3,6 7 14 41 65 108

Type �81._1_._ 5 9 19 54 87 143

Type �81._2_._ 6 12 23 68 108 179

Plug-in screw connection m1 [mm] Hose outer diameter 6 6 8 10 10 12

Pressure medium Compressed air VG-32 ISO 3448 filtered, oiled or unoiled


Dimensions [mm]Size

20 �0 40 �0 �0 80

D 46 56 70 110 140 178

D1 15 15 18 21 24 25

d 16 20 20 25 32 40

F 34 44 56 90 112 142

h 37,3 42,3 52,8 75,9 94,4 113,9

LType 381._0_._ 108 114,5 119,5 140,5 161 187

Type 381._1_. _ 126,7 133,7 138,7 162,5 187 216,8

Type 381._2_._ 145,4 152,9 157,9 184,5 213 246,6

m 3 x M5 3 x M6 3 x M6 3 x M8 3 x M10 3 x M12

t 13,5 12,5 12,5 13,5 13,5 16,5

Dimensions [mm]Size

20 �) �0 40 �0 �0 80

D2 - 65 72,5 109 136 175

D� - 40,5 45,5 55,5 60,5 65,5

L1 - L + 39 L + 30 L + 39 L + 48 L + 57

m2 4 x M6 4 x M8 4 x M8 4 x M10 4 x M12 4 x M16

TK 38 46,5 56,5 89 110 140

Suitable for standard- based cylinder [piston Ø]

40 50 63 100 125 160

Dimensions of adaptor for standard cylinder acc. ISO 1��2

5) In preparation We reserve the right to make dimensional and constructional alterations.


9

ROBA®-linearstop pneumaticTechnical Explanations

Maintenance/Switching Frequency

The ROBA®-linearstop is designed for a switching frequency of 2.000.000 switchings (higher switching frequencies available on request).The ROBA®-linearstop is mainly maintenance-free.The piston rod must be inspected regularly (at least every 6 months) for contamination through friction value-reducing materials; if necessary, it must be cleaned.In case of major accumulation of dust and dirt, or in extreme ambient conditions, special maintenance work is required. (Please contact mayr ® power transmission).

Controls (Fig. 8)

The piston chamber is filled with compressed air, thus cancelling the spring force. On power failure, the compressed air is diverted into the piston chamber. The spring force has an effect on the clamping element. The piston rod clamps/brakes reliably and safely.

mayr® recommends the following pneumatic controls.

Fig. 8

Brake rod

A piston rod is used as a brake rod.


➔�See page 11

State of Delivery

ROBA®-linearstop brakes are manufacturer-assembled ready for installation and set to the nominal holding force stipulated in the order.

Before initial operation, please read and observe the respective Installation and Operational Instructions.

Function

The ROBA®-linearstop (Type 381.0_ _._) which is closed with a spring-loaded device and opened pneumatically clamps a piston rod steplessly and backlash-free.The ROBA®-linearstop (Type 381.1_ _._) clamps and brakes a piston rod steplessly and backlash-free.Due to the spring-loaded system, the fail-safe principle is guaran-teed, and the ROBA®-linearstop works as a safety brake. For the required operating pressure, please see Table „Technical Data“.The max. sliding speed is 2 m/s.

Item Designation

1 Pressure source 4 – 6 bar

2 Maintenance unit

� Pressure reducer (switching time-related application)

4 Non-return valve (for pressure fluctuations)

� 3/2 directional control valve

� Quick-action ventilating valve (switching-related application)

� Pressure switch (safety-related application)

Controls for switching time-related applications

Recommendation!For applications for optimisation of the switching time (reduction of braking distance)

Controls for safety-related applications

Recommendation!For applications for optimisation of safety (should there be a risk to people)

Please find a detailed description in the respective Installation and Operational Instructions (go to www.mayr.com).


6

5

4 3

2 1

7

10

Brake rod



or

Options (available on request)

Wear monitoring (proximity sensor)

Design with plain bearings (for additional radial forces)

Elbow connector For pneumatic connection

Fig. 9 Fig. 10 Fig. 11

Adaptor Both sides

Fig. 12

Fig. 1� Piston rod with insertion chamfer

Steel, hardened

Hardness test at least HRC 60

Diameter tolerance h7 to f7

Surface quality Ra < 0,4 µm

Yield point min. 400 N/mm2 (e.g. C45)

*) Piston rods are available as piece goods. Please contact the sales employee responsible or the company mayr ® directly.

For assembly of the brake, we recommend an insertion chamfer of min. 3 x 20 ° (Fig. 13).

Friction value-reducing deposits on the piston rod must be avoided. Risk of loads dropping.


Steel, hard chrome plated

Layer thickness at least 20 µm

Diameter tolerance h7 to f7

Surface quality Ra < 0,4 µm

Yield point min. 400 N/mm2 (e.g. C45)

11

20°

L

m

t

ØF

Ød

ØD

120° (3x)

Fig. 14

Technical DataSize

40 �0 80 4)

Nominal holding force F 1) 2) [N] 2000 6500 17500

Weight [kg] 4 10,5 -

Electrical power P [W] 57 65 -


Dimensions [mm]Size

40 �0 80 4)

D 75 110 -

d 12 20 -

F 56 90 -

L 180 218 225

m 3 x M6 3 x M8 3 x M12

t 14 15 14

ROBA®-linearstop electromagnetic

1) Minimum holding force when the brake is de-energised, with dry piston rod or piston rod moistened with mineral oil.2) Please contact mayr® power transmission if - a nominal holding force other than the one stated is required. - a construction length other than the one stated is required.

Max. screw-in depth

Order Number

StandardSwitching condition monitoring

01

0 Standard

__ / 3 8 2 . __ 0 __ . 0 / __

Sizes �)

40�080

Clamping unit

Brake01

0 StandardCoil nominal voltage �)

52 [VDC]

Other voltages available on request

Example: Order number �0 / �82.100.0 / �,0 / 10900

3) For other construction sizes, please contact mayr ® power transmission4) In preparation5) Brake operation only possible with overexcitation

We reserve the right to make dimensional and constructional alterations.

Cable length approx. 2000 mm


12

Technical Explanations

Brake rod



➔�See page 11

State of Delivery

ROBA®-linearstop brakes are manufacturer-assembled ready for installation and set to the nominal holding force stipulated in the order.

Before initial operation, please read and observe the respective Installation and Operational Instructions.

Function

The ROBA®-linearstop (Type 382.0_ _.0) which is closed with a spring-loaded device and opened electromagnetically clamps a piston rod steplessly and backlash-free.The ROBA®-linearstop (Type 382.1_ _.0) which is closed with a spring-loaded device and opened electromagnetically clamps and brakes a piston rod steplessly and backlash-free.Due to the spring-loaded system, the fail-safe principle is guaran-teed, and the ROBA®-linearstop works as a safety brake.The max. sliding speed is 2 m/s.

Electrical Connectionmayr® recommends the use of ROBA®-multiswitch Type 20/019.100.2 SO

ROBA®-multiswitch fast-switching modules are used in order to connect DC current consumers to AC voltage supplies

Connection to 230 VAC (other connection voltages available on request)

Overexcitation voltage 207 VDC

Holding voltage 30 VDC

Fig. 1�

When operating the brake without a ROBA®-multiswitch, please contact mayr® power transmission.

Time diagram: Operation of the brake

For opening of the ROBA®-linearstop, it is switched on with overexcitation voltage, meaning with a substantially higher voltage than the coil nominal voltage.

On being switched on, the ROBA®-multiswitch briefly emits a rectified 90 % of the applied mains voltage to the magnetic coil. After this extremely brief phase, a regulated overexcitation voltage of 207 VDC is applied to the brake.

The overexcitation time can be adjusted until it is switched to the holding voltage of 30 VDC.

r

r

r

U 207 VDC (Overexcitation voltage)

52 VDC (Coil nominal voltage)

30 VDC (Holding voltage)

0tMaintenance/Switching Frequency

In preparation

Guidelines on Electrical Connection

The brake magnetic coil is connected to DC voltage. In order to open the brake, overexcitation voltage is required, which is easily achieved using our ROBA®-multiswitch (see „Electrical Connection“).

The applicable standards and regulations (e.g. DIN EN 60204-1 and DIN VDE 0580) are to be observed by the constructor and operator.Their maintenance must be ensured and inspected.


1�

t

s

t

tVentil

SK

o

SB

rS

Sys

tBrt50

Vmax

V01 23

tKo

Fmax

Brake Dimensioning Type �81._ _ _._ / Type �82._ _ _._(taking dynamic braking actions into consideration)

Start of retardation

Valve 1)

Pre-selection

Dynamic braking actions/EMERGENCY STOP

Freq.. =m x g

[N] 0,5

Clamping (without EMERGENCY STOP)

Freq. =m x g

[N] 0,8

Fnom ≥ Freq.[N]

Specifications

tvalve = approx. 0,016 [s]

t50 = see Table Friction Work and Switching Times [s]

Fmax = 2,5 x Fnom [N]

Please observe the maximum holding force when dimensioning the system!

Friction Work

Friction work per braking action

Qr = m x g x SBr + 0,5 x m x Vmax2 [J]

Number of braking actions up to wear end

Zperm. =Qr tot

Qr

Calculation of the Stopping DistanceDynamic braking actions/EMERGENCY STOP for vertical axis 90 °

Diagram 1: Switching/Braking Times/Distances

Names:

1 Distance

2 Speed

3 Axial force

a [m/s2] Retardation

g [m/s2] Gravitational acceleration (9,81 m/s2)

FBr [N] Braking force for dynamic calculation

Freq. [N] Required holding force

Fnom [N] Nominal holding force (minimum holding force)

Fmax [N] Maximum holding force

m [kg] Load mass

SBr [m]Braking distance (distance from start of retardation)

SSys [m]System distance (distance up to start of retardation)

SKo [m] Stopping distance

t50 [s] Brake switching time

tvalve [s] Valve switching time

tSys [s] System switching time

tBr [s] Brake braking time

tKo [s] Stopping time

Qr [J] Friction work per braking action

Qr perm. [J] Permitted friction work per braking action

Qr tot [J] Total friction work up to wear end

V0 [m/s] Initial speed

Vmax [m/s] Maximum speed

Zperm. Number of braking actions up to wear end

If you have any questions, please contact the company mayr®.

Stopping Distance

SKo = SBr + SSys[m]

FBr =m x g

+Fnom [N]

2 2

System Distance (distance up to start of retardation)

SSys = V0 x tSys + g x tSys2 x 0,� [m]

tSys = t50 + tvalve [s]

Vmax = V0 + g x tSys [m/s]

Brake Distance (distance from start of retardation)

SBr =Vmax

2 [m]

2 x ( FBr - g )m

Stopping Time

tKo = tBr + tSys [s]

tBr =Vmax [s]

FBr - gm

1) With the exception of Type 382._0_._


14

Calculation Example

1. Pre-selection of Braking Force

Freq. =m x g

[N] 0,�

Freq. =800 x 9,81

= 1��9� [N] 0,5

Selected: ROBA®-linearstop Size 70, Type 381.12_._

Nominal holding force Fnom = 1��00 N at 5 bar operating pressure

(from Table “Technical Data“)

Number of braking actions up to wear end

Zperm. =Qr to.

Qr

Zperm. =5,85 x 106

= ��4 dynamic braking actions1637

Data:

Vertical axis

Speed g = 9,81 m/s2

Initial speed V0 = 0,5 m/s

Mass m = 800 kg

Existing operating pressure = 5 bar

Friction Work and Switching Times (Type �81.1_ _._) 1)Size

�0 40 �0 �0 80

Permitted total friction work up to wear end 2) Qr tot [10� J] 0,46 1,14 3,6 5,85 10,35

Maximum permitted friction work per braking action 2) Qr perm. [J] 308 760 2400 3900 6900

Brake switching time t�0 [s] 0,035 0,035 0,050 0,060 0,070

1) For friction work Type 381.0_ _._ , please contact mayr® power transmission. The switching times also apply to Type 381.0_ _._2) For higher friction work/total friction work, please contact mayr® power transmission

�. Friction Work

Friction work per braking action

Qr = m x g x SBr + 0,� x m x Vmax2 [J]

Qr = 800 x 9,81 x 0,129 + 0,5 x 800 x 1,252 [J]

Qr = 1637 (≤ permitted friction work) [J]

Stopping distance

SKo = SBr + SSys = 0,129 + 0,0�� = 0,19� [m]

2. Calculation of Stopping Distance

Checking the selected brake size

System distance (distance up to start of retardation)

SSys = V0 x tSys + g x tSys2 x 0,� [m]

SSys = 0,5 x 0,076 + 9,81 x 0,0762 x 0,5 = 0,0�� [m]

tSys = t50 + tvalve = 0,060 + 0,016 = 0,076 [s]

FBr =m x g

+Fnom [N]

2 2

FBr =800 x 9,81

+17500

= 12674 [N]2 2

Stopping time

tKo = tBr + tSys = 0,20� + 0,0�� = 0,28� [s]

tBr =Vmax =

1,25= 0,207 [s]

FBr - g12674

- 9,81m 800

Braking distance (distance from start of retardation)

SBr =Vmax

2 =

1,252 = 0,129 [m]

2 x ( FBr - g ) 2 x 6,03

m

Vmax = V0 + g x tSys = 0,5 + 9,81 x 0,076 = 1,25 [m/s]

ROBA®-linearstop pneumatic

Friction Work and Switching Times (Type �82.1_ _._) �)Size

40 �0 80 �)

Permitted total friction work up to wear end 4) Qr tot [10� J] Available on request -

Maximum permitted friction work per braking action 2) Qr perm. [J] Available on request -

Brake switching time t�0 [s] Available on request -

1) For friction work Type 382.0_ _._ , please contact mayr® power transmission. The switching times also apply to Type 382.0_ _._2) For higher friction work/total friction work, please contact mayr® power transmission5) In preparation

ROBA®-linearstop electromagnetic


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Representatives

More representatives:

Austria, Belgium, Brazil, Canada, Denmark, Finland, Greece, Hongkong, Hungary, Indonesia, Israel, Luxembourg, Malaysia, New Zealand, Norway, Philippines, Romania, Russia, Slovakia, Slovenia, South Africa, Spain, Sweden, Thailand, TurkeyYou can find the complete address for the representative responsible for your area under www.mayr.com in the internet.

Headquarters

Chr. Mayr GmbH + Co. KGEichenstrasse 1, D-87665 MauerstettenTel.: +49 83 41/8 04-0, Fax: +49 83 41/80 44 21www.mayr.com, E-Mail: [email protected]

Branch office

Service Germany

Baden-WürttembergEsslinger Straße 770771 Leinfelden-EchterdingenTel.: 07 11/45 96 01 0Fax: 07 11/45 96 01 10

BavariaEichenstrasse 187665 MauerstettenTel.: 0 83 41/80 41 04Fax: 0 83 41/80 44 23

ChemnitzBornaer Straße 20509114 ChemnitzTel.: 03 71/4 74 18 96Fax: 03 71/4 74 18 95

FrankenUnterer Markt 991217 HersbruckTel.: 0 91 51/81 48 64Fax: 0 91 51/81 62 45

KamenLünener Strasse 21159174 KamenTel.: 0 23 07/23 63 85Fax: 0 23 07/24 26 74

NorthSchiefer Brink 832699 ExtertalTel.: 0 57 54/9 20 77Fax: 0 57 54/9 20 78

Rhine-MainHans-Böckler-Straße 664823 Groß-Umstadt Tel.: 0 60 78/7 82 53 37Fax: 0 60 78/9 30 08 00

ChinaMayr ZhangjiagangPower Transmission Co., Ltd. Changxing Road No. 16,215600 ZhangjiagangTel.: 05 12/58 91-75 65Fax: 05 12/58 91-75 [email protected]

Great BritainMayr Transmissions Ltd.Valley Road, Business ParkKeighley, BD21 4LZWest YorkshireTel.: 0 15 35/66 39 00Fax: 0 15 35/66 32 [email protected]

FranceMayr France S.A.Z.A.L. du MinopoleRue Nungesser et Coli62160 Bully-Les-MinesTel.: 03.21.72.91.91Fax: [email protected]

ItalyMayr Italia S.r.l.Viale Veneto, 335020 Saonara (PD)Tel.: 0498/79 10 20Fax: 0498/79 10 [email protected]

SingaporeMayr Transmission (S) PTE Ltd.No. 8 Boon Lay Way Unit 03-06, TradeHub 21Singapore 609964 Tel.: 00 65/65 60 12 30Fax: 00 65/65 60 10 [email protected]

SwitzerlandMayr Kupplungen AGTobeläckerstrasse 118212 Neuhausen am RheinfallTel.: 0 52/6 74 08 70Fax: 0 52/6 74 08 [email protected]

USAMayr Corporation4 North StreetWaldwickNJ 07463Tel.: 2 01/4 45-72 10Fax: 2 01/4 45-80 [email protected]

AustraliaRegal Beloit Australia Pty Ltd.19 Corporate Ave03178 Rowville, VictoriaAustralienTel.: 0 3/92 37 40 00Fax: 0 3/92 37 40 [email protected]

IndiaNational EngineeringCompany (NENCO)J-225, M.I.D.C. Bhosari Pune 411026Tel.: 0 20/27 13 00 29Fax: 0 20/27 13 02 [email protected]

JapanMATSUI Corporation2-4-7 AzabudaiMinato-kuTokyo 106-8641Tel.: 03/35 86-41 41Fax: 03/32 24 24 [email protected]

NetherlandsGroneman BV Amarilstraat 117554 TV Hengelo OVTel.: 074/2 55 11 40Fax: 074/2 55 11 [email protected]

PolandWamex Sp. z o.o. ul. Pozaryskiego, 2804-703 WarszawaTel.: 0 22/6 15 90 80Fax: 0 22/8 15 61 [email protected]

South KoreaMayr Korea Co. Ltd.Room No.1002, 10th floor, Nex Zone, SK TECHNOPARK, 77-1, SungSan-Dong, SungSan-Gu, Changwon, KoreaTel.: 0 55/2 62-40 24Fax: 0 55/2 62-40 [email protected]

TaiwanGerman Tech Auto Co., Ltd.No. 28, Fenggong Zhong Road, Shengang Dist.,Taichung City 429, Taiwan R.O.C.Tel.: 04/25 15 05 66Fax: 04/25 15 24 [email protected]

Czech RepublicBMC - TECH s.r.o.Hviezdoslavova 29 b62700 BrnoTel.: 05/45 22 60 47Fax: 05/45 22 60 [email protected]

HagenIm Langenstück 658093 HagenTel.: 0 23 31/78 03 0Fax: 0 23 31/78 03 25

05/0

6/20

13 S

C/L

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roba -linearstop - industrial clutch

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