The data and measurements shown below relate to test sample „A“ of the new MR-Brake type „WP“ (INVENTUS MR-Brake WP (A)).
The outer diameter of the MR-Brake „WP (A)“ = approximately 91 mm
The axial width of the MR-Brake housing „WP (A)“ = approximately 48 mm
The axial width of the MR-Brake „WP (A)“ = approximately 68 mm
Supported with ball bearings and sealed with shaft seals on both sides.
The mass of the MR-Brake „WP (A)“ ≈ 1,500 grams
Basic friction (OFF state) MR-Brake WP (A) = < 0.3 Nm (< 300 mNm)
The video presents the release function after a higher braking torque
at a current of 3 A with ≈ 70 Nm of torque
1. Current = 0.5 A
2. Voltage = 1.2 Volt
3. Electrical power requirement = 0.6 watts
4. Torque ≈ 10 Nm
1. Current = 0.8 A
2. Voltage = 2 Volt
3. Electrical power requirement = 1.6 watts
4. Torque ≈ 20 Nm
1. Current = 1.2 A
2. Voltage = 3 Volt
3. Electrical power requirement = 3.6 watts
4. Torque ≈ 35 Nm
1. Current = 2.0 A
2. Voltage = 5 Volt
3. Electrical power requirement = 10 watts
4. Torque ≈ 50 Nm
1. Current = 3.0 A
2. Voltage = 7.5 Volt
3. Electrical power requirement = 22.5 watts
4. Torque ≈ 80 Nm
1. Speed = 600 1/min or 10 1/sec or 3,600°/sec
2. Torque = 62 Nm
3. Current „on“
Makita DDF 482 cordless drill
No-load speed – 1st gear: 0 – 600 rpm
1. Speed = 1,900 1/min or 31.7 1/sec or 11,400°/sec
2. Torque = 36 Nm
3. Current „on“
Makita DDF 482 cordless drill
No-load speed – 2nd gear: 0 – 1,900 rpm
1. Speed = standstill
2. MR-Brake „WP (A)“: Energized (Power ON)
3. Dynamic impact (impulse)
4. Torque ≈ 90 Nm (38 watts)
The data and measurements shown below relate to test sample „B“ of the new MR-Brake type „WP“ (INVENTUS MR-Brake WP (B)).
140 Nm generated by the first pulse
Pulse power ≈ 160 watts (pulse energy ≈ 32 J)
Pulse duration ≈ 200 ms
Use of a switchable permanent magnet element
Demagnetization possible
Torque ≈ 140 Nm without constant energy supply
Use of a special material that can store the magnetic field