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Kollmorgen S70602-SENANA

Product Introduction:
The S70602-SENANA is a high-performance AC servo motor from Kollmorgen’s S70 product family with a 60 mm frame size. The suffix breakdown: “60” = 60 mm frame, “02” = stack length code 02 (medium length), “SE” = single-turn absolute encoder, “NA” = no brake, “NA” = no keyway (smooth shaft). This motor delivers high torque in a compact package with absolute position feedback.

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Detailed content

Model Series: S70 Series

Technical Specifications:

Parameter Value
Frame Size 60 mm
Motor Type AC Synchronous Servo Motor
Encoder Type Single-Turn Absolute (128 cycles/rev)
Rated Torque 0.64 Nm (continuous)
Peak Torque 1.92 Nm
Rated Speed 3000 RPM
Max Speed 5000 RPM
Rated Power 0.20 kW (continuous)
Peak Power 0.60 kW
Rated Voltage 325 VDC bus
Phase Current (RMS) 2.0 A (continuous)
Phase Current (Peak) 6.0 A
Winding Inductance 1.2 mH
Winding Resistance 3.2 Ω
Rotor Inertia 0.00018 kg·m²
Weight 0.65 kg
IP Rating IP40 (with connector)
Cooling Method Conduction / Forced Air
Shaft Diameter 10 mm (smooth, no keyway)
Shaft Length 25 mm

Structural Features:

  • 60 mm outer diameter cylindrical design
  • Rear flange mounting with 4 bolt holes (M4)
  • Smooth shaft (no keyway) for clamping hub connection
  • No holding brake for minimal inertia
  • Single-turn absolute encoder mounted on rear shaft end
  • Sealed precision ball bearings

Material Composition:

  • Stator Core: Silicon steel laminations (0.2 mm)
  • Rotor Magnets: Neodymium Iron Boron (NdFeB, N42SH)
  • Shaft: Stainless steel (AISI 303)
  • Housing: Aluminum alloy (6061-T6), anodized
  • Bearings: Stainless steel sealed ball bearings
  • Windings: Class H insulation (180°C), copper wire, VPI impregnated

Working Principle:
Three-phase PMSM operation. The servo drive sends PWM currents to the stator, creating a rotating magnetic field that the NdFeB rotor follows synchronously. The single-turn absolute encoder provides position data (128 counts/rev) to the drive, enabling immediate position knowledge on power-up without homing. The smooth shaft eliminates backlash in coupling applications.

Functional Features:

  • Single-turn absolute encoder eliminates homing routine after every power cycle
  • Smooth shaft for zero-backlash coupling
  • No brake for fastest acceleration
  • Compatible with AKD, AKD-P, AKD2G drives
  • 3:1 peak-to-continuous torque ratio

Advantages:

  • Absolute position on power-up — no homing required within one revolution
  • Smooth shaft — zero backlash for precision motion
  • High torque-to-inertia ratio in 60 mm frame
  • No brake — lightest weight option in S70 family
  • Wide speed range up to 5000 RPM

Applicable Industries:

  • Collaborative robot joints
  • Pick-and-place machines
  • Medical device actuators
  • Laboratory automation
  • 3D printers (industrial)
  • Valve actuators

Installation Requirements:

  • Mount using 4× M4 bolts on rear flange (torque: 1.2 Nm)
  • Use clamping hub on smooth shaft — do not use set screws
  • Align shaft to load within 0.03 mm TIR
  • Connect encoder cable via M23 connector (max 15 m)
  • Provide minimum 15 mm clearance around motor body

Usage Notes:

  • Single-turn absolute: position is lost after more than one revolution without tracking
  • Do not use set screws on smooth shaft — risk of shaft damage
  • Maximum continuous ambient: 40°C
  • Derate current by 10% per 10°C above 40°C

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