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Easy installation Class of insulation F; 100 % duty cycle Short switching times Different torque variants due to variable equipment Minimum torsional backlash due to accurate toothing Long service lifetime Low wear Advantages for Your Applications Function Certain ROBA-stop®-M brakes can be used for safety-relevant applications acc. ISO 13849-1 (for Permitted Types, see page 29). For information on the safety parameters, please contact mayr®power transmission. □ Easy installation □ Brake outer diameter completely enclosed (higher protection can easily be realised) □ Magnetic coil is designed...

ROBA-stop®-M Sizes 2 to 1000 Braking torques 0.7 to 1400 Nm (Standard brake) 4 to 1800 Nm (Holding brake) Permitted shaft diameter 0 8 to 90 o mayryour reliable partner Type 891._ _1.0 Page 4 [> Standard design Page 5 [> Standard design with friction disk IP66 design with flange plate Tacho attachment design with flange plate Short Description Installation Brake Dimensioning, Friction-Power Diagrams Further Options Switching Times, Electrical Connection, Electrical Accessories Guidelines on safety-critical applications (acc. ISO 13849-1) Guidelines Nominal torque holding brake 0 100% Nominal...

your reliable partner Type 891._ _2.0 Standard with friction disk Type 891._ _4.1 Enclosed design (IP66) with flange plate Type 891._ _ 4.2 Tacho attachment design with flange plate * Outer diameter friction disk: Free size; outer diameter flange plate: -0.2 Permitted voltage tolerance acc. DIN IEC 60038 (±10 %). 1) Other adjustments, see Table 3, page 7 and type key page 3. 1.1) Braking torque tolerance = +40 %/-20 % (friction lining pairing conditioning necessary, see Operational Instructions B.8.1._). 1.2) Minimum bore not permitted for Type 891._8_._ 2) The respective maximum bores are to...

your reliable partner ROBA-stop®-M – Short Description Installation Installation Conditions Braking Torque Adjustment ❑ The eccentricity of the shaft end in relation to the mounting pitch circle must not exceed 0.2 mm. Different torque adjustments can be made using different spring configurations (6) in the coil carrier (2) (see Table 3, page 7). ❑ The positional tolerance of the threaded holes for the cap screws (Item 8, Fig. 2) must not exceed 0.2 mm. ❑ The axial run-out deviation of the screw-on surface to the shaft must not exceed the permitted axial run-out tolerance acc. DIN 42955 N. Larger...

o mayr your reliable partner _ Brake operation only possible with overexcitation. The braking torque (switching torque) is the torque effective in the shaft train of a slipping brake with a sliding speed of 1 m/s in relation to the mean friction radius (acc. VDE 0580/07.2000).

<> mayr your reliable partner ROBA-stop®-M - Brake Dimensioning Brake Size Selection 2. Inspection of thermic load J x n2 M2 Q = -x - [J/ braking] The permitted friction work (switching work) Qr zul per braking for the specified switching frequency can be taken from the Friction-Power Diagrams (page 9). If the friction work (switching work) per braking is known, the max. switching frequency can also be taken from the friction-power diagrams (page 9). Mass moment of inertia Safety factor (>1.5 -3 x according to conditions) Required braking torque Load torque * sign in brackets (-) is valid if...

Type 891.01_._ and Type 891.21_._ (Standard brake) at reference speed (see Technical Data) Type 891.01_._ and Type 891.21_._ (Standard brake) for the maximum speed n max (see Technical Data) Size 1000 Size 500 Size 250 Size 150 Size 100 Size 60 Size 32 Size 16 Size 8 Size 4 Size 2 Size 1000 Size 500 Size 250 Size 150 Size 100 Size 60 Size 32 Size 16 Size 8 Size 4 Size 2 Permitted friction work at other speeds (customer specific) The permitted friction work at specific customer speeds can also be calculated using linear interpolation between the maximum speed and reference speed. Calculation Example...

Type 891.10_._ and Type 891.50_._ (Holding brake) at reference speed (see Technical Data) Size Size Size Size Size Size Size Size Size Size Size Type 891.10_._ and Type 891.50_._ (Holding brake) for the maximum speed n max (see Technical Data) Size Size Size Size Size Size Size Size Size Size Size Permitted friction work at other speeds (customer specific) The permitted friction work at specific customer speeds can also be calculated using linear interpolation between the maximum speed and reference speed. Calculation Example Reference speed nref 750 rpm Friction power: see friction power diagram...

a multitude of further designs, which cannot be described in detail in o mayryour reliable partner ROBA-stop®-M - Further Options In addition to the standard brakes, mayr® power transmission provides this catalogue. Some of the most frequently requested options are: • Microswitch / proximity switch for switching condition indication (release monitoring), Fig. 1 • Microswitch for wear indication (wear monitoring), Fig. 2 • Customer-specific flange plate, Fig. 3 • IP65 design for continuous shafts, Fig. 4 • Noise damping (O-ring damping between the toothed hub and the rotor), Fig. 5 • ACH = Anti-Condensation...

Lockable hand release In de-energised condition, the brake with lockable hand release can be released manually. By deflecting the hand release rod (1), the armature disk (3) is pushed against the thrust springs (4) onto the coil carrier (2) and the braking torque is removed, Figs. 7a and 7b.

your reliable partner ROBA-stop®-M – Further Options Certified Cold Climate safety brakes for wind power plants (Type 891.4_ _._) The Cold Climate Version of our ROBA-stop®-M safety brake sets new standards for pitch and yaw brakes in low-temperature applications. It is the only electromagnetic safety brake certified by Germanischer Lloyd (GL) for applications to -40 °C. These certified pitch and yaw safety brakes work reliably even in the most arduous climatic conditions and ensure the operation of your systems – even at temperatures of minus 40 °C.