moflon slip rings
MMC108 Slip Rings

OD 7.9mm(0.31"),Length 10.8mm(0.425"), 4wires* 1A(signal)

MMC108 slip rings are small and compact with OD 7.9mm * L 10.8mm, standard, off-the-shelf.Color-coded lead wires are used on both the stator and rotor for simplified electrical connections. Using a 90° V-groove ring design for each ring.

MMC1089 is the high-end version corresponding to MMC108, It has higher performace and longer working life, higher speed rotating speed,low noise, Pealse refer to table 2 as below.

part # OD * L signal/1A 4A 8A 15A Total wires download
MMC1087.9mm*10.8mm40004PDF CAD
Shared Specifications
Wires4(see table as above)CurrentSignal(1A)
Voltage240 VDC/VACMax speed250RPM
Contact MaterialPrecious Metal:gold-goldContact Resistance<150mOhm(AWG28#,250mm)
Housing MaterialPlasticsTorque0.02N.m
Working lifedepends on working speedElectrical noise<10mΩ
Dielectric strength250VDC@50HzLead WireUL Teflon® Awg30
Insulation resistance1000MΩ@500VDCLead Lengths250mm
Operating Temp.-40°C to 80°CProtectionIP51
Mechanical vibratioMIL-SID-810EHumidity10% to 90% RH
MaterialsLead Free,RoHS compliantCE CertifiedYES

1)The operational life of the unit is dependent upon rotational speed, environment and temperature.
2)Lead Wire size: 2A/signal -> AWG30, colored code.
3)Electrical noise is dependent upon the rotating speed and current,voltage.


Max SpeedWorking lifeTorque Housing
Electrical noise①
MMC108250RPMdepends on working speed0.02 N·mPlastics10mΩ
MMC10891000RPM1depends on working speed0.005 N·mMetal4mΩ