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RE5032 Brushless Resolver (Size 21)



Size 21 Frameless Resolver (2.1″ or 50mm OD)

The Micronor RE5032 series frameless Brushless Resolver provides high performance in measurement and feedback applications where traditional resolvers fail – high speed, vibration, shock and radiation environments.  This resolver is designed for the most demanding harsh environment applications – including Aerospace, Space, Automotive, Marine, Submarine, Radiation, and Downhole.

The REXXXX series incorporate a proprietary solid rotor design with no windings. Hence, the resolver has only half the number of windings of a traditional brushless resolver, along with significantly increased reliability. The solid rotor allow operation with traditional oils or other liquids.


Parameter Value
Type Control Transmitter (Rotor=Excitation Input, Stators=Sine/Cosine Output)
Size Size 21 (2.1″ or 50mm OD), 50mm OD x 20mm H
Bore 20mm ID
Max Speed Standard=60,000rpm
High Speed= 65,000rpm
Temperature Rating Standard= -40°C to +135°C
High Temperature= -70°C to +200°C
Accuracy +/- 60 arcmin
Excitation Frequency 1-10 kHz, 8 kHz typical
Transformation Ratio 0.5 (+/-10%)
Speed 1 (1 pole-pair)
Radial Air Gap 0.3mm (special gaps to 1mm available)
Shock Resistant 20 G
Vibration Resistant 10-50 Hz, 10 G over 0.5 hrs
Radiation Resistance Standard with High Temperature models
Weight 190 grams

Ordering Information

Type Specifications Part Number
Standard Temperature, Standard Speed -40°C to +135°C, max 60’000rpm RE5032-1-1
Standard Temperature, High Speed -40°C to +135°C, max 65’000rpm RE5032-1-2
High Temperature, Standard Speed, Radiation Resistant -70°C to +200°C, max 60’000rpm
and Radiation Resistant
High Temperature, High Speed, Radiation Resistant -70°C to +200°C, max 65’000rpm
and Radiation Resistant


  • Compact Size 21 (2″ or 50mm OD)
  • Standard Bore, 20mm ID
  • Solid rotor design offers higher reliability than traditional wired resolvers
  • For harsh environment applications where traditional resolvers fail
  • Max Speed, 65,000 rpm
  • Max Temperature Range, -40°C to +200°C
  • High Temperature models are also Radiation Resistant
  • Excitation =1-10kHz, Transformation Ratio=0.5, Single Speed
  • Special Bore sizes and Higher Speed versions upon request


  • Aerospace
  • Flight control systems
  • AC or DC servo motor feedback
  • Hydraulic pumps
  • Downhole
  • Automotive and race cars
  • High-speed spindles/li>
  • Nuclear environments (special Radiation Resistant models available)


RE5032 Datasheet
RE5032 2D Drawing


Call +1-805-389-6600 or email

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