MaalonDrive® WormGear 8mm – Type 1
With the MaalonDrive® WormGear 8mm – type 1 micro positioning system, a worm gear is directly integrated, thereby allowing the drive to be arranged in a space-saving manner tangential to the movement axis.
The system is driven by a stepper motor with 20 steps per rotation in an open loop control combined with a zero-backlash MaalonDrive® gear with a reduction ratio of 120:1.
Thanks to the subsequent worm gear, a total reduction ratio of 25,200:1 is achieved. In addition, a hollow shaft with diameter of 40mm can be realised.
Benefits
1) Use of high quality materials
2) Robust control without feedback system
3) High torque capacity
4) Custom designed housing
5) Worm gear integrated on output shaft with custom designed worm wheel
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
25200 : 1
P-004
Self-locking
ja
P-008
Repeatability unidirectional
15.1286 arcsec
P-009
Repeatability bidirectional
20.0043 arcmin
P-010
Accuracy
20.0086 arcmin
P-011
Transmission accuracy
30.0171 arcmin
P-012
Resolution
0.00071 °
P-013
Torsional stiffness
2.67 Nm/rad
P-014
Lost motion
20 arcmin
P-015
Backlash
0 arcmin
P-016
Rated torque
T
500 mNm
P-017
Peak torque
T
500 mNm
P-018
Momentary peak torque
T
500 mNm
P-020
Torque constant gear
Km
0.1 μNm/mNm
P-021
Rated input speed
n
15000 rpm
P-022
Maximum input speed
n
21000 rpm
P-023
Rated output speed
n
0.59524 rpm
P-024
Maximum output speed
n
0.83333 rpm
P-026
No-load starting torque
T
52.5 μNm
P-027
No-load running torque
T
35 μNm
P-028
Rated running torque
T
575 μNm
P-034
Lifetime for rated operation
1000 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
282 * 10-4 gcm2
P-056
Weight
m
18 g
P-057
Min. permissible ambient temperature (non-operating)
T
-30 °C
P-058
Min. permissible ambient temperature (operating)
T
-20 °C
P-059
Max. permissible ambient temperature (non-operating)
T
130 °C
P-060
Max. permissible ambient temperature (operating)
T
70 °C
P-063
Kind of gear wheel input shaft
Worm
P-064
Module gear wheel input shaft
0.25
P-065
Number of teeth gear wheel input shaft
1
P-068
Quality gear wheel input shaft
5
P-069
Material gear wheel input shaft
1.4028
P-071
Kind of gear wheel output shaft
worm wheel
P-072
Module gear wheel output shaft
0.25
P-073
Number of teeth gear wheel output shaft
210
P-076
Quality gear wheel output shaft
6
P-077
Material gear wheel output shaft
CC483-K
Motor data: Stepper AM 0820-2R-A0.225
P-100
Motortype
Stepper
P-102
Maximum speed of motor
n
21000 rpm
P-103
Resonance frequency of motor
f
170 Hz
P-105
Holding torque of motor (unpowered)
T
0.17 mNm
P-109
Rated current of motor
I
225 mA
P-111
Rated voltage of motor
U
2 V
P-112
Phase resistance of motor
R
7.3 ohm
P-113
Inductance of motor
L
1.4 mH
P-114
Amplitude BEMF of motor
U
0.267 mV/rpm
P-115
Full step angle of motor
18 °
P-116
Angular accuracy of step of motor
±1.8 °
P-117
Electrical time constant of motor
t
0.21 ms
P-118
Max. coil temperature of motor
T
130 °C
P-119
Thermal resistance of motor between coil and housing
Rth1
4.1 K/W
P-120
Thermal resistance of motor between housing and air
Rth2
65.3 K/W
P-121
Thermal time constant of the coil of the motor
τw1
3500 ms
P-122
Thermal time constant of the housing of the motor
τw2
160000 ms
P-123
Insulation voltage of motor
U
200 V
Material information
P-900
RoHS compliant
ja
P-901
Lubrication of output bearing gearbox
Longtime PD2
P-903
Lubrication of gear component set
Molykote BR 2 plus
P-904
Lubrication of bearing motor
Synthetic light ester oil
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
Stainless steel
P-912
Material of gearbox output side
1.4305 DIN EN
P-914
Material of motor housing
Anodized aluminum
Graphs
P-019
P-029
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