Structure And Preponderance

• Rotary solenoid is designed based on the structures and principles of push/pull solenoid flat type. Rotary solenoids are designed as with 3 special oblique slots, and 3 bearing balls as media. When solenoid pull, armature will lead the 3 bearing balls to move along the oblique slots, resulting in rotary of certain angle. (FIG. 1)
  
• The oblique tracks are specially processed. We may therefore get certain torque at every angle.
  
• Coil is covered by high permeability metal. The leakage of magnet flux is very low.
  
• Due to small gap of rotary operation, by changing crank to axial travel. Can obtain stronger force even with longer stroke.

Rotating Direction And Angle
The angle and direction of rotary are decided by the case assembly and tracks of bearing balls. Stopper is used to fix stop-position to assure functions and characteristics. Refer to Fig. 2.

When release, The armature must return to point " 0 " (Start-Position). (Please note, operation without releasing to Start-Position is a cause of function failure.)

Axial Displacement Of Output Shaft

• The rotary solenoid is helically splinted, and when energized, shifts its shaft a little in the axial direction to develop a turning force.(FIG.4)
  
• Shown below is the size vs. shaft travel relationship to be taken into account when coupling the output shaft with a load.

Output Shaft Arrangement And Accessories
The rotary solenoids are classified as illustrated below without regard to model designations. Make a choice to suit your installation requirements. (FIG.5)

B: Shaft extended on the base side

A: Shaft extended on the armature side

T: Armature with tapped holes

D: Provided with a dust cover

R: Provided with return spring

General Characteristics

Insulation class:
E CLASS. ( however lead wire is A class)

Dielectric strength:
AC 1000V, 50/60Hz, 1 min. ( at normal temperature and normal humidity)

Insulation resistance:
more than 100MO on a DC 500V (at normal temperature and normal humidity)

Life standard:
2 million operations

Semi-long:
10 million operations

Long:
50 million operations

Points To Be Considered When Operation

1. CONCERNING TEMPERATURE
   The values of rotary solenoid coil data are based on ambience temperature 20°C, and plating on standard heat sink.
   
   And coil data is defined when rated operation, temperature rise 85? Max. In case of too high ambience temperature or too small heat sink, please decrease duty cycle or operation voltage. Coil temperature must not exceed 120°C
   
2. CONCERNING PROCESS OF SHAFT AND ARMATURE TAP
   When users process on shaft (Material: Stainless) and armature, do protect metal cutting powder from adhering on slots of bearing balls or release spring.
   
   As life will be decreased seriously due to Mix of metal powder and grease.

Methods Of Selection
To choose suitable rotary solenoids, please determine followings:

1. TORQUE
   Besides load, it's necessary to also consider variation of temperature and voltage. Therefore please time load by safety coefficient 1.5x
   
2. DUTY CYCLE
   Besides on time and off time, please also note Max. on time.
   
3. ANGLE OF ROTARY
   To define required angle of rotary.
   
4. DIRECTION OF ROTARY
   To define required direction of rotary. Please note the direction is defined when viewed from armature side.
   
5. OPERATION VOLTAGE
   To define coil input DC voltage.

Order Issuing
When order issuing, please define following 7 points

Example: