Shaft motor a kind of linear motor
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Linear shaft motor
Compact in design, highly precise and full of power

Shaft motor the other type of servo motor

The linear shaft motor is a linear motor consisting of a shaft and carriage. In this drive, however, the magnets are housed in the shaft and the carriage (forcer) moves along the shaft without contact.

As the winding, which is located in the carriage, completely surrounds the shaft, the entire magnetic flux is utilized. This enables a 0.5 to 5.0 mm non-critical air gap without force fluctuations, as the gap size does not change over the entire cross-section of the device. As a result, the average air gap remains the same size.

Another important difference of the shaft motor lies in the design of the magnetic shaft. There is no gap between the magnets within the cylinder (stainless steel tube). The patented process for this creates a magnetic field that is twice as strong as that of linear motors.

In addition, the shaft motor has no iron core, which also improves synchronization. Nevertheless, the system is very rigid, comparable to that of a linear motor with an iron core. With a shaft motor, you therefore achieve very high rigidity and very good synchronization.

 

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Your advantages of a shaft motor

  • Icon Vorteil The best possible utilization of the magnetic field makes the drive very efficient.
  • Icon Vorteil More compact and lighter than the already known linear motors.
  • Icon Vorteil 2 carriages on one shaft or 1 carriage on several shafts
  • Icon Vorteil The coreless design avoids torque ripple.
  • Icon Vorteil Extremely easy to install compared to other linear motors.

Realized locations

  • Pfeil rechtsLinear slides in devices for blood analysis
  • Pfeil rechtsHigh-precision stage mounted on granite block
  • Pfeil rechtsHeight adjustment as Z axis
  • Pfeil rechtsPick and place in the clean room

Features

  • Icon MerkmalContinuous force from 1.8 to 200 N
  • Icon MerkmalPeak force from 7.2 to 800 N
  • Icon MerkmalThrust up to 100,000 N
  • Icon MerkmalEffective length up to 4.6 m
  • Icon MerkmalPositioning accuracy up to < 0.07 nm (depending on the encoder)

Linear shaft motor models

with standard air gap 1/3

Key data Unit S040D S040T S040Q S080D S080T S080Q S120D S120T S120Q S160D S160T S160Q
Continuous force N 0.29 0.45 0.58 1.8 2.7 3.5 4.5 6.6 8.9 10 15 20
Continuous current A 0.3 0.3 0.3 0.8 0.8 0.8 0.4 0.4 0.4 0.6 0.6 0.6
Acceleration force N 1.2 1.8 2.3 7.2 10.7 14 18 27 36 40 60 81
Acceleration current A 1.1 1.1 1.1 3.4 3.4 3.4 1.6 1.6 1.6 2.5 2.5 2.5
Force constant(Kf) N/A 1 1.6 2.1 2.1 3.2 4.2 11 17 22 16 24 33
Back EMF(Ke) V/m/s 0.4 0.5 0.7 0.7 1.1 1.4 3.7 5.5 7.4 5.4 8.1 11
Resistance Ω 11.2 16.8 22.4 4.7 6.8 9 37 54 73 21 33 43
Inductance mH 0.5 0.7 1 0.7 1 1.3 12 18 24 8.2 12 16
Forcer length mm 25 34 43 40 55 70 64 88 112 80 110 140
Forcer weight kg 0.01 0.01 0.01 0.05 0.06 0.08 0.09 0.12 0.16 0.15 0.2 0.3
Air gap mm 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Shaft diameter mm 4 4 4 8 8 8 12 12 12 16 16 16

with standard air gap 2/3

Key data Unit S200D S200T S200Q S250D S250T S250Q S320D S320T S320Q S350D S350T S350Q
Continuous force N 18 28 38 40 60 75 56 85 113 104 148 190
Continuous current A 0.6 0.6 0.6 1.3 1.3 1.3 1.2 1.2 1.2 1.5 1.5 2.7
Acceleration force N 72 112 152 160 240 300 226 338 451 416 592 760
Acceleration current A 2.4 2.4 2.4 5.1 5.1 5.1 5 5 5 6 6 10.8
Force constant(Kf) N/A 31 47 64 31 47 59 45 68 91 49 99 70
Back EMF(Ke) V/m/s 10 16 21 10.4 16 20 15 23 30 23 33 23
Resistance Ω 28.7 43 56 7.8 12 15 11 17 23 2.7 3.9 5.2
Inductance mH 19.3 29 39 9.8 15 19 17 26 34 21.8 33 10.9
Forcer length mm 94 130 166 120 165 210 160 220 280 160 220 280
Forcer weight kg 0.3 0.5 0.7 0.8 1.1 1.5 1.2 1.7 2.2 1.3 1.9 2.4
Air gap mm 0.75 0.75 0.75 0.75 0.75 0.75 1 1 1 1 1 1
Shaft diameter mm 20 20 20 25 25 25 32 32 32 35 35 35

with standard air gap 3/3

Key data Unit S427D S427T S427Q S435D S435T S435Q S500D S500T S500Q S605D S605T S605Q
Continuous force N 100 150 200 116 175 233 289 440 585 420 610 780
Continuous current A 3 3 3 3 3 3 3.8 5.8 7.7 8.8 8.6 8.4
Acceleration force N 400 600 800 464 700 932 1156 1760 2340 1000 2400 3100
Acceleration current A 12 12 12 12 12 12 15.2 23.2 30.8 35 34 34
Force constant(Kf) N/A 33 50 67 39 58 78 76 76 76 47 71 93
Back EMF(Ke) V/m/s 11 17 22 13 19 26 25 25 25 16 24 31
Resistance Ω 2.7 3.9 5.2 2.7 3.9 5.2 4.4 3.3 2.2 1.1 1.7 2.2
Inductance mH 7 11 15 7 11 15 27 20 13 7 10 13
Forcer length mm 220 310 400 220 310 400 240 330 420 310 430 550
Forcer weight kg 3 4.2 5.4 3 4.2 5.4 10 13 15 16 21 27
Air gap mm 1.65 1.65 1.65 1.25 1.25 1.25 1.75 1.75 1.75 1.75 1.75 1.75
Shaft diameter mm 42.7 42.7 42.7 43.5 43.5 43.5 50 50 50 60.5 60.5 60.5

with large air gap 1/2

Key data Unit L160D L160T L160Q L250D L250T L250Q L250SSS L250SS L250DS L250TS L250QS L320SS L320DS
Continuous force N 8.8 13 18 34 52 69 7.1 17 29 44 55 19 33
Continuous current A 0.55 0.55 0.55 1.3 1.3 1.3 1.9 1.3 1.1 1 1 1.7 1.5
Acceleration force N 35 53 70 138 207 276 28 69 118 176 220 75 132
Acceleration current A 2.2 2.2 2.2 5.2 5.2 5.2 7.6 5.1 4.3 4.2 3.9 6.9 6
Force constant(Kf) N/A 16 24 32 27 40 53 3.7 13 28 42 57 11 22
Back EMF(Ke) V/m/s 5.4 8 11 8.8 13 18 1.2 4.5 9.2 14 19 3.6 7.3
Resistance Ω 21 31 41 8.4 13 17 2.9 6.5 13 19 25 3.6 7.1
Inductance mH 7.3 11 15 9.2 14 18 2.8 11 19 28 37 5.1 7.8
Forcer length mm 80 110 140 120 165 210 30 50 80 110 140 50 80
Forcer weight kg 0.15 0.23 0.3 0.77 1.1 1.5 0.24 0.43 0.72 1 1.4 0.44 0.68
Air gap mm 0.8 0.8 0.8 2 2 2 2 2 2 2 2 2.5 2.5
Shaft diameter mm 16 16 16 25 25 25 25 25 25 25 25 32 32

with large air gap 2/2

Key data Unit L320TS L320QS L320D L320T L320Q L350SS L350DS L350TS L350QS L427D L427T L427Q
Continuous force N 48 59 55 82 109 24 43 55 74 110 170 210
Continuous current A 1.5 1.3 1.3 1.3 1.3 2 1.8 1.6 1.6 3.6 3.6 3.4
Acceleration force N 193 235 218 327 436 95 170 222 298 450 680 830
Acceleration current A 5.9 5.2 5 5 5 7.8 7.3 6.4 6.4 14 14 13
Force constant(Kf) N/A 33 45 44 65 87 12 23 35 47 31 47 62
Back EMF(Ke) V/m/s 11 15 15 22 29 4 7.7 12 16 10 16 21
Resistance Ω 11 14 13.8 20.2 6.9 27 5.3 7.9 11 2.9 4.4 5.8
Inductance mH 12 15 14 21 28 2.9 4.4 6.7 8.7 7.8 12 15
Forcer length mm 110 140 160 220 280 50 80 110 140 220 310 400
Forcer weight kg 0.98 1.2 1.3 1.9 2.6 0.34 0.56 0.78 1 3 4.4 5.7
Air gap mm 2.5 2.5 2.5 2.5 2.5 3 3 3 3 5 5 5
Shaft diameter mm 32 32 32 32 32 35 35 35 35 42.7 42.7 42.7

Normal and parallel operation

Configuration examples

Standards and guidelines

  • Icon NormREACH
  • Icon NormRoHS2

Options

  • Icon ZahnradParallel operation of carriages (forcers) on one shaft
  • Icon ZahnradParallel operation of several shaft motors
  • Icon ZahnradSelection of different winding types
  • Icon ZahnradDigital Hall sensors
  • Icon ZahnradAdditional cooling methods
  • Icon ZahnradOperation in a clean room

FAQ

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