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High Speed Slip Ring Alternatives

ROTOCON MM Series

Small Slip Rings for Tight Spaces

For applications featuring a limited mounting space, Meridian Laboratory has developed its unique compact ROTOCON MM Series.  With up to 12 contacts available, the MM series is capable of transmitting both low current power, as well as signal and data within the same assembly.  Like all ROTOCON, the contact resistance is extremely low, both when stationary and while rotating. The MM is especially well utilized in high-speed applications (above 2,000 RPM) and remains unaffected in performance or reliability. If you require more contacts or if the application is not space limited, see our full lineup of M-Series, End-of-Shaft, ROTOCON rotary electrical connectors.

Unlike conventional brushed slip rings which rely on metal on metal contacts and are limited by RPM, electrically noisy, and require adjustment and maintenance for proper operation, all ROTOCONs are brushless, functioning through a molecularly bonded viscous metal film which remains unaffected by speed, provides clean and noise-free electrical signals, and requires zero maintenance.

RPMModel dependent, see model specifications
MOUNTINGEnd of shaft or flange
HOUSING MATERIALAnodized aluminum or 304 stainless steel
TERMINATIONSRing terminals, flying leads, or miniature connectors
OPERATIONCan be operated in any direction or orientation
MAINTENANCEFeatures permanently lubricated bearings, brush-free design requires no user maintenance
VOLTAGEStandard: Up to 600V AC/DC, Optional: Up to 1,500V AC/DC
MINIMUM INSULATION RESISTANCE>500MΩ @ 1kVDC
AMPERAGEModel dependent, up to 4A/channel (channels can be bridged in parallel, for higher capacity)
FREQUENCYUp to 1GHz (Application dependent)
DATA & SIGNAL TRANSMISSIONEthernet (10/100/1000Mbps), Etherlink, LAPPNET, Profinet, Profibus, ControlNet, DeviceNet, CAN-Bus, RS485, RS432, RS422, USB (1.0/2.0), Modbus, EtherCAT, CC-Link, coax, thermocouple (all types) and all other major communication protocols (With an appropriate number of circuits and cables)
STATIONARY CONTACT RESISTANCE<0.1mΩ
ROTATING CONTACT RESISTANCESame as stationary contact resistance (<0.1mΩ)
ELECTRICAL NOISE<0.01uV
OPERATIONIntrinsically immune to internal arcing
AMBIENT TEMPERATURENot to exceed 160˚F (70˚C)
IP RATINGAvailable up to IP67
  • Ideal for high speed applications and functions
  • Compact, miniature sized for tight spaces
  • Brushless, maintenance-free operation
  • Combines with rotary union, fiber optic rotary joint (FORJ) and other add-ons
  • Unaffected by machine vibration or rotational speed
  • Environmentally sealed
  • Stress/strain gage monitoring
  • Wind turbine control
  • High speed dynamometer measurement
  • Torque/vibration monitoring
  • Bio-monitoring of laboratory specimens
  • High speed satellite transmission
End of Shaft Mounting
End of Shaft Mounting
Double End of Shaft Mounting
Double End of Shaft Mounting
Flange Mounting
Flange Mounting
Shaft Flange Mounting
Shaft Flange Mounting
Torque Restraint Mounting
Torque Restraint
ROTORFlying Leads (Standard)
BODYRing Terminals (Standard), Potted Miniature Connector, Potted Leads
RPMUp to 15,000 RPM
MOUNTINGThrough-hole, end of shaft, or flange mount available
HOUSING6061 Aluminum or 304 Stainless steel
PASSAGESUp to 20 Passages
PRESSUREUp to 23,000 PSI - speed and media dependent
TEMPERATURE-321F to 900F, depending on options
FIBER TYPESSingle-mode E9/125μm
Multi-mode G50/125 μm
Multi-mode G62.5/125 μm
*Fiber protection available
CHANNELSStandard: 1, 2, 3-20 Channels
CONNECTOR TYPESC, LC, FC, ST, LSA, Molex/LC, LuxCis
POLISHUPC, APC, PC
DIGITAL DATA TRANSMISSIONUp to 40Gbits/s per channel
RPMUp to 3,000 RPM (Model specific)
TEMPERATURE-40F to 185F

Compact Miniature - End of Shaft Models

MM Series

ModelMax Current (Continuous)Body LengthWeight (including 36" leads)RPM (Continuous / Momentary)
Not seeing what you need? Contact Meridian Laboratory for more models and information.
MM-25.5A1.14"3.08 oz.4,000 / 8,000
MM-34A1.3"3.61 oz.4,000 / 8,000
MM-44A1.46"4.14 oz.3,500 / 7,000
MM-52.75A1.62"4.67 oz.3,500 / 7,000
MM-62.75A1.78"5.20 oz.3,500 / 7,000
MM-71.5A1.94"5.73 oz.3,000 / 6,000
MM-81.5A2.1"6.26 oz.3,000 / 6,000
MM-91.5A2.26"6.79 oz.3,000 / 6,000
MM-101.5A2.42"7.32 oz.3,000 / 6,000
MM-121A2.58"7.85 oz.3,000 / 6,000

Why Choose ROTOCON? Request a ROTOCON quote