MaalonDrive® ZeroBacklash 8mm - Type 3

MaalonDrive®

ZeroBacklash 8mm - Type 3

Technical Supply Specifications

Features

  • High repeatability
  • Zero backlash with optimised fit between speed and resolution
  • Preloaded ball bearing
  • Lifetime lubrication
  • Use of high quality materials

Description

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.

Technical Parameter

Global System
Number Parameter Symbol Value Hint
P-003
Ratioi160 : 1 
P-004
Self-locking yes  
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 torqueT3 mNm 
P-017
Peak torqueT6 mNm 
P-018
Momentary peak torqueT20 mNm 
P-021
Rated input speedn10000 rpm 
P-022
Maximum input speedn23000 rpm 
P-023
Rated output speedn62.5 rpm 
P-024
Maximum output speedn143.75 rpm 
P-026
No-load starting torqueT45 μNm 
P-027
No-load running torqueT30 μNm 
P-028
Rated running torqueT345 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 stiffnessc0.87 N/μm 
P-038
Axial stiffnessc18.5 N/μm 
P-039
Max. radial load on output shaft (non-operating, constant load)F20 N 
P-040
Max. radial load on output shaft (non-operating, impulsive load)F5 N 
P-041
Max. radial load on output shaft (operating, constant load)F3 N 
P-042
Max. radial load on output shaft (operating, impulsive load)F3 N 
P-043
Max. axial load on output shaft (non-operating, constantF64 N 
P-044
Max. axial load on output shaft (non-operating, impulsive load)F20 N 
P-045
Max. axial load on output shaft (operating, constant load)F185 N 
P-046
Max. axial load on output shaft (operating, impulsive load)F66 N 
P-055
Moment of inertiaI362 * 10-4 gcm2 
P-056
Weightm7 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)T85 °C 
P-060
Max. permissible ambient temperature (operating)T65 °C 
Motor data: DC-Motor RE 8 12V 0.5W
Number Parameter Symbol Value Hint
P-100Motortype DC  
P-102
Maximum speed of motorn23000 rpm 
P-104
Speed constant of motorKn1340 rpm/V 
P-106
Stall torque of motorT0.925 mNm 
P-107
Torque constant of motorKm7.11 mNm/A 
P-108
No-load current of motorI4.44 mA 
P-110
Max. continuous current of motorI86.5 mA 
P-111
Rated voltage of motorU12 V 
P-112
Phase resistance of motorR92.2 ohm 
P-113
Inductance of motorL0.606 mH 
P-114
Amplitude BEMF of motorU0.746 mV/rpm 
P-118
Max. coil temperature of motorT85 °C 
P-119
Thermal resistance of motor between coil and housingRth122 K/W 
P-120
Thermal resistance of motor between housing and airRth248 K/W 
P-121
Thermal time constant of the coil of the motorτw12960 ms 
P-122
Thermal time constant of the housing of the motorτw221300 ms 
Material information
Number Parameter Symbol Value Hint
P-900
RoHS compliant yes  
P-901Lubrication of output bearing gearbox Longtime PD2  
P-903Lubrication of gear component set Molykote BR 2 plus  
P-908Material of gear component set NiFe  
P-909Material of output bearing gearbox 1.4108 DIN EN  
P-911Material of bearing motor Sintered bronze  
P-912Material of gearbox output side 1.4305 DIN EN  
P-914Material of motor housing Steel, black coated  
P-019 - Torque characteristic
P-029 - Running torque characteristic

Technical Drawing

MaalonDrive® ZeroBacklash 8mm - Type 3