Question 1

1. Material

Accepted Answer

What is in contact with the Motorized Roller?

Metal
 Plastic
 Wood
 Urethane
 Natural rubber
 Corrugated cardboard
 Other material

Question 2

2. Product Weight

Accepted Answer

What will be the maximum weight conveyed?

Question 3

3. Available Voltage

Accepted Answer

What voltage are you using?

24V DC

Question 4

4. Desired Transportation Speed

Accepted Answer

How fast do you want to move the article?

Feet/minute (FPM)

Question 5

5. Roller Diameter

Accepted Answer

What diameter are you looking for?

Common Itoh Denki Roller Diameters
1.50” (38.0mm)
1.91” (48.6mm)
2.25” (57.0mm)
2.38” (60.5mm)
2.50” (63.5mm)

Question 6

6. Between Frame (BF) Dimension

Accepted Answer

What is your between-frame dimension (BF)?

In determining the correct length of the Power Moller required, you should first obtain the between-frame width of the conveyor you will be mounting the Power Moller in.
All dimensions need to be converted to millimeters.
BF in inches x 25.4 mm = BF in millimeters
Always round your BF in millimeters to the nearest whole number (e.g. a BF of 366.4 mm should be rounded to 366 mm, and a BF of 366.5 mm should be rounded to 367 mm)
Take the between-frame width in millimeters and subtract 15mm to account for bearing end caps and clearances to achieve proper tube length.
Subtract 21 mm when using the “JQ” type shafts.
For the PM635, the deduction will be 20mm

Please reference the product catalog pages for proper deduct measurements for specific roller options.

Question 7

7. Options

Accepted Answer

Does the application call for any special options?

Please reference the product catalog pages for options for each roller model. Options vary by model.

Question 8

Important Formulas

Accepted Answer

Tangential Force (TF)

Tangential force is the force in lbs. that is needed to move the item on the conveyor.
The force tangent to the roller’s surface.
Tangential force F can be found by the following formula:

Formula 1
TF = µ X W
TF = Required tangential force
W= Weight of article to be transferred
µ = Coefficient of rolling friction in accordance with the material composition
of the bottom of the article to be transferred. (See Table I)

To determine the number of POWER MOLLER units required for transfer, compare required tangential force (F) and the tangential force of one POWER MOLLER unit (f)

Formula 2
Number of POWER MOLLERS required = F/f

How to Select A Power Moller

PM486FE-60-366-D-024-KF