ESM Series Compact Capsule Slip Rings

Compact capsule design, multiple amp circuit options

The ESM Series compact capsule slip rings feature a low torque design with gold-on-gold contacts and low electrical noise.


The ESM Series include flexible, color-coded lead wires suitable for transferring analog and digital signals. Models are available in 9, 15, 24, 32, 44, and 52 circuits with 2, 5, and 10 amp circuit combinations. Ethernet options also available.

ESM Series Electrical Slip Rings

  • High quality gold on gold contacts
  • Low electrical noise
  • Compact size
  • Precision ball bearings
  • Transfers analog and digital signals
  • Data speeds up to 50 megabits / sec.*
  • Compatible with data bus protocols
  • Temperature range: -40°F to 176°F (-40°C to +80°C)
  • Lead types: 2/5/10 amp, 26/20/16 gauge silver/tin plated copper, Teflon®
  • Max operating speed: 250 RPM continuous


*For higher data speeds see our ESE, ESEM, & ESET Series slip rings

part # Circuits Amps/Circuit Voltage Lead Wire Length Overall Capsule Length
ESM36 9 (3x) 10A
(6x) 2A
240 48" 1.94"
ESM312 15 (3x) 5A
(12x) 2A
240 48" 1.94"
ESM420 24 (4x) 10A
(20x) 2A
240 48" 2.60"
ESM428 32 (4x) 5A
(28x) 2A
240 48" 2.60"
ESM440 44 (4x) 10A
(40x) 2A
240 48" 3.50"
ESM448 52 (4x) 5A
(48x) 2A
240 48" 3.50"

Looking for dimensional drawing information? Download ESM Series Catalog Download Complete Slip Ring Catalog