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VELMEX, Inc.
PK243A1A-SG18,_StepperMotor

PK243A1A-SG18,_StepperMotor

Product catalog summary

Product Overview: The PK243A1A-SG18 is a stepper motor from the VEXTA® product line, designed for high resolution, high torque, and smooth low-speed rotation. It incorporates SH gears with high permissible torque.

Specifications:

Motor Type: 2-Phase
Motor Frame Size: 1.65 in. sq.
Shaft/Gear Type: Spur Gear
Gear Ratio: 18:1
Holding Torque: 112 oz-in
Type: Geared
Connection Type: Bipolar (Series), Unipolar
Lead Wires: 6
Current per Phase: 0.67 A [Bipolar (Series)], 0.95 A [Unipolar]
Encoder: None
Shaft: Single
Voltage: 5.6 VDC [Bipolar (Series)], 4 VDC [Unipolar]
Resistance: 8.4 Ω/phase [Bipolar (Series)], 4.2 Ω/phase [Unipolar]
Inductance: 10 mH/phase [Bipolar (Series)], 2.5 mH/phase [Unipolar]
Step Angle: 0.1°
Rotor Inertia: 0.191 oz-in²
RoHS Compliant: Yes

Performance and Safety:

Insulation Resistance: 100 MΩ or more at 500 VDC
Dielectric Strength: Withstands 0.5 kVAC at 50/60 Hz for 1 minute
Temperature Rise: 176°F (80°C) or less
Insulation Class: Class B [266°F (130°C)]
Ambient Temperature Range: 14 ~ 122°F (-10 ~ 50°C)
Ambient Humidity: 85% or less (non-condensing)

Mechanical Specifications:

Shaft Runout: 0.05 mm (0.002 in.) T.I.R.
Concentricity: 0.075 mm (0.003 in.) T.I.R.
Perpendicularity: 0.075 mm (0.003 in.) T.I.R.
Radial Play: 0.025 mm (0.001 in.) max at 5 N (1.12 lb.)
Axial Play: 0.075 mm (0.003 in.) max at 10 N (2.2 lb.)

Catalog excerpts

Item # PK243A1A-SG18, Stepper Motor Stepper Motor Incorporating the SH gears with high permissible torque delivers high resolution, high torque and smooth low-speed rotation. SPECIFICATIONS Product Line Motor Type Motor Frame Size Shaft/Gear Type Spur Gear Holding Torque Connection Type Lead Wires Bipolar (Series) Unipolar

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Current per Phase (A/phase) 0.67 [Bipolar (Series)] 0.95 [Unipolar] 5.6 [Bipolar (Series)] 4 [Unipolar] Resistance (Ω/phase) 8.4 [Bipolar (Series)] 4.2 [Unipolar] Inductance (mH/phase) 10 [Bipolar (Series)] 2.5 [Unipolar] Step Angle Rotor Inertia (oz-in2) RoHS Compliant Insulation Resistance 100 M Ω or more when 500 VDC megger is applied between the windings and the case under normal ambient temperature and humidity. Dielectric Strength Sufficient to withstand 0.5 kVAC at 50 Hz or 60 Hz applied between the windings and the case for 1 minute under normal ambient temperature and humidity. Temperature...

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PK243A1A-SG18,_StepperMotor

PK243A1A-SG18,_StepperMotor

Catalog excerpts

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