Oriental Motor

ORIENTAL MOTOR U.S.A. Corp.
570 Alaska Avenue
Torrance, CA 90503
1-800-GO-VEXTA (468-3982)

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This product has been discontinued please contact your local sales office for more information.

Compatible Motors (sold separately)

Unit of Measure

Specifications

Frame Size

- 2.36 in

Motor Length

- 3.48 in.

Speed-Torque Characteristics

-
Speed - Torque Characteristics

Holding Torque

- 768 oz-in

Current per Phase (A/phase)

- 1.4

Type

- Geared

Shaft/Gear Type

- Harmonic Gear

Gear Ratio (X:1)

- 50 :1

Gear Type

- Harmonic, Non Backlash (0 arc min), Centered Shaft

Motor Connection Type

- Flying Leads

Shaft

- Single

Basic Step Angle

- 0.72º

Output Step Angle

- 0.0144 °

Connection Type

- New Pentagon (Bipolar)

Lead Wires

- 5

Rotor Inertia

- 1.15 oz-in²

Lost Motion

- 0.7 arc min max.

RoHS Compliant

- Yes

Safety Standards

- UL CSA EN CE

Insulation Resistance

- 100 MΩ minimum under normal temperature and humidity, when measured by a 500 VDC megger between the windings and the motor casing.

Dielectric Strength

- Sufficient to withstand 1.5 kV, 50 Hz or 60 Hz applied for 1 minute between the windings and casing under normal temperature and humidity.

Temperature Rise

- Temperature rise of the coil measured by the Change Resistance Method is 144ºF (80ºC) or less (at rated current, at standstill, five phases energized).

Insulation Class

- Class B [266ºF (130ºC)] [Recognized as Class A 221ºF (105ºC) by UL standard]

Ambient Temperature Range

- 32ºF ~ 104ºF (0ºC ~ 40ºC) (nonfreezing)

Ambient Humidity

- 85% or less (noncondensing)

Shaft Runout

- 0.002 in. (0.05 mm) T.I.R. at top of output shaft

Concentricity

- 0.003 in. (0.075 mm) T.I.R.

Perpendicularity

- 0.003 in. (0.075 mm) T.I.R.

Radial Play

- 0.001 in. (0.025 mm) max. of 1.12 lb. (5 N)

Axial Play

- 0.003 in. (0.075 mm) max. of 2.2 lb. (10 N)

Radial Load

- 0 in. from Shaft End = 72 lb0.2 in. from Shaft End = 83 lb0.39 in. from Shaft End = 99 lb0.59 in. from Shaft End = 123 lb0.79 in. from Shaft End = 162 lb

Axial Load

- 101 lb

Features

-

Harmonic Geared (HG) Stepping Motors

The PK Series 0.72°stepping motor offers high torque, our lowest vibration and noise. This motor is wound in the bipolar New Pentagon configuration and therefore, require a New Pentagon bipolar type driver. The New Pentagon configuration ensures that maximum torque is being generated by the motor on every step. The New Pentagon configuration also provides extremely smooth motion as well as maintaining torque and step accuracy regardless of the step resolution.

HG Gear

The harmonic gear offers unparalleled precision in positioning and features a simple construction utilizing the metal's elastomechanical property, comprising just three basic components: a wave generator, flex spline and circular spline.

Available in 0.79 in. (20mm), 1.65 in. (42mm), 2.36 in. (60mm) and 3.54 in. (90mm) frame sizes.

Combines three basic parts. The flex spline is bent into an oval shape by the wave generator. The teeth at the long axis of the oval mesh with the circular spline, while the teeth at the short axis of the oval are completely separate from it.

 


HGRotating the wave generator (input) clockwise while keeping the circular spline fixed in position will subject the flax spline to elastic deformation, causing a gradual shift in the point of engagement between the circular spline and flex spline.


HGWhen the wave generator completes one revolution, the flex spline has rotated two fewer teeth than the circular spline has, resulting in the movement of the flex spline for the difference in the tooth count (two teeth) in the opposite direction of the wave generator's rotation (i.e. counterclockwise). This movement translates into output, thereby reducing the speed.


EncoderEncoder Option Available

The PK Series stepping motor with encoder offers high torque and precise feedback capability.

  • 500 or 1000 pulse/rev.
  • 2/ 3-channel TTL type or 3-channel line driver type