Go to homepage
Go to homepage
Contact
Go to homepage
Skip image gallery
Serie 3257 ... CR
Serie 3257 ... CR
Serie 3257 ... CR
Serie 3257 ... CR
Serie 3257 ... CR
Serie 3257 ... CR
DC-Micromotors

3257X012CR

Graphite Commutation

Key data

Nominal voltage:
12 ... 48 V
Rated torque up to:
73.1 mNm
No-load speed up to:
6240 min⁻¹
Stall torque up to:
570 mNm
Diameter:
32 mm
Length:
57 mm
More product details
Combine the article Combine now

Available on inquiry

Advantages

  • Best dynamic performance due to a low rotor inertia
  • Shockproof all-steel housing with corrosion-resistant coating
  • Powerful rare-earth magnet
  • Extremely wide operating temperature range -30 °C to 125 °C (optionally -55 °C, winding up to 155 °C)
  • Durable graphite commutation
  • No cogging
  • Highest power density
Productcategory: DC-Micromotors
Productfamily: FAULHABER CR
Nominal voltage: UN 12 V
Terminal resistance: R 0.407 Ω
Efficiency motor, max.: ηmax 79 %
No-load speed up to: n0 5880 min⁻¹
No-load current: I0 0.265 A
Rated torque up to: MN 63.4 mNm
Stall torque up to: MH 536 mNm
Speed constant: kn 499 min⁻¹/V
Back-EMF constant: kE 2 mV/min⁻¹
Torque constant: kM 19.1 mNm/A
Current constant: kI 0.052 A/mNm
Slope of n-M curve: 10.6 min⁻¹/mNm
Rotor inductance: L 68.6 µH
Mechanical time constant: Tm 4.7 ms
Rotor inertia: J 42 gcm²
Angular acceleration: αmax. 130 ·10³rad/s²
Thermal resistance Rth1: Rth1 3.4 K/W
Thermal resistance Rth2: Rth2 10.3 K/W
Thermal resistance (external plastic flange): Rth2 p 9.8 K/W
Thermal resistance (external metal flange): Rth2 m 1.5 K/W
Thermal time constant (winding): τw1 36 s
Thermal time constant (housing): τw2 1016.2 s
Thermal time constant (external plastic flange): τw2 p 970 s
Thermal time constant (external metal flange): τw2 m 150 s
Housing material: steel, nickel plated
Operating temperature, min.: -30 °C
Operating temperature, max.: 125 °C
Winding temperature, max.: 155 °C
Mass: 242 g
Speed up to: nmax. 7000 min⁻¹