MaalonDrive® ZeroBacklash 8mm – Type 3
Zero backlash combined with dynamics and yet small outer dimensions are the characteristic features of the MaalonDrive® ZeroBacklash 8mm – type 3.
The micro actuator consists of a combination of a zero-backlash MaalonDrive® gear with a reduction ratio of 160:1 with a DC motor with rated voltage of 12V.
The output shaft is precisely guided by preloaded ball bearings which allow the application to be directly connected.
Benefits
1) High repeatability
2) Lifetime lubrication
3) Use of high quality materials
4) Preloaded ball bearing
5) Zero backlash with optimised fit between speed and resolution
Technical parameters
The values shown are based on calculations and measurement procedures carried out by Micromotion GmbH, which are carried out according to the current state of the art. Our definitions can be found at www.micromotion-drives.com. For further information please contact sales@micromotion.de.
Nr.
Parameter
Symbol
Value
Properties
P-003
Ratio
i
160 : 1
P-004
Self-locking
ja
P-008
Repeatability unidirectional
15 arcsec
P-009
Repeatability bidirectional
20 arcmin
P-010
Accuracy
14 arcmin
P-011
Transmission accuracy
28 arcmin
P-013
Torsional stiffness
2.29 Nm/rad
P-014
Lost motion
15 arcmin
P-015
Backlash
0 arcmin
P-016
Rated torque
T
3 mNm
P-017
Peak torque
T
6 mNm
P-018
Momentary peak torque
T
20 mNm
P-021
Rated input speed
n
10000 rpm
P-022
Maximum input speed
n
23000 rpm
P-023
Rated output speed
n
62.5 rpm
P-024
Maximum output speed
n
143.75 rpm
P-026
No-load starting torque
T
45 μNm
P-027
No-load running torque
T
30 μNm
P-028
Rated running torque
T
345 μNm
P-034
Lifetime for rated operation
500 h
P-035
Radial backlash output shaft
0 μm
P-036
Axial backlash output shaft
0 μm
P-037
Radial stiffness
c
0.87 N/μm
P-038
Axial stiffness
c
18.5 N/μm
P-039
Max. radial load on output shaft (non-operating, constant load)
F
20 N
P-040
Max. radial load on output shaft (non-operating, impulsive load)
F
5 N
P-041
Max. radial load on output shaft (operating, constant load)
F
3 N
P-042
Max. radial load on output shaft (operating, impulsive load)
F
3 N
P-043
Max. axial load on output shaft (non-operating, constant
F
64 N
P-044
Max. axial load on output shaft (non-operating, impulsive load)
F
20 N
P-045
Max. axial load on output shaft (operating, constant load)
F
185 N
P-046
Max. axial load on output shaft (operating, impulsive load)
F
66 N
P-055
Moment of inertia
I
362 * 10-4 gcm2
P-056
Weight
m
7 g
P-057
Min. permissible ambient temperature (non-operating)
T
-20 °C
P-058
Min. permissible ambient temperature (operating)
T
-20 °C
P-059
Max. permissible ambient temperature (non-operating)
T
85 °C
P-060
Max. permissible ambient temperature (operating)
T
65 °C
Motor data: DC-Motor RE 8 12V 0.5W
P-100
Motortype
DC
P-102
Maximum speed of motor
n
23000 rpm
P-104
Speed constant of motor
Kn
1340 rpm/V
P-106
Stall torque of motor
T
0.925 mNm
P-107
Torque constant of motor
Km
7.11 mNm/A
P-108
No-load current of motor
I
4.44 mA
P-110
Max. continuous current of motor
I
86.5 mA
P-111
Rated voltage of motor
U
12 V
P-112
Phase resistance of motor
R
92.2 ohm
P-113
Inductance of motor
L
0.606 mH
P-114
Amplitude BEMF of motor
U
0.746 mV/rpm
P-118
Max. coil temperature of motor
T
85 °C
P-119
Thermal resistance of motor between coil and housing
Rth1
22 K/W
P-120
Thermal resistance of motor between housing and air
Rth2
48 K/W
P-121
Thermal time constant of the coil of the motor
τw1
2960 ms
P-122
Thermal time constant of the housing of the motor
τw2
21300 ms
Material information
P-900
RoHS compliant
ja
P-901
Lubrication of output bearing gearbox
Asonic GLY32
P-903
Lubrication of gear component set
Molykote BR 2 plus
P-908
Material of gear component set
NiFe
P-909
Material of output bearing gearbox
1.4108 DIN EN
P-911
Material of bearing motor
Sintered bronze
P-912
Material of gearbox output side
1.4305 DIN EN
P-914
Material of motor housing
Steel, black coated
Graphs
P-029
P-019
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