How to Select a Power Moller
PM- Power Moller
Speed Code: 60
Tube Length: 366
Voltage: D-024 (DC 24V)
Mounting Brackets: (KF)- no mounting brackets
1 – Material: What is in contact with the Motorized Roller?
- Natural rubber
- Corrugated cardboard
- Other material
2 – Product weight: What will be the maximum weight?
3 – Available voltage: What voltage are you using?
4 – Desired transportation speed: How fast do you want to move the article?
- Feet/minute (FPM)
5 – Diameter of the roller: What diameter are you looking for?
Common Itoh Roller Diameters
- 1.50” (38.0mm)
- 1.68” (42.7mm)
- 1.91” (48.6mm)
- 2.25” (57.0mm)
- 2.38” (60.5mm)
- 2.50” (63.5mm)
- 3.00” (76.3mm)
(Convert English units to Metric units, 1 inch=25.4 mm)
6 – Between frame dimension: What is your between frame dimension (BF)?
- In determining the correct length of the Power Moller required, you should first obtain the between the frame width of the conveyor you will be mounting the Power Moller in.
- All dimensions need to be converted to millimeters.
- Take the between the frame width and subtract 15mm to account for bearing end caps and clearances to achieve proper tube length.
- Subtract 21mm when using the “JQ” type shafts.
- For the PM635FS the deduction will be 20mm
- Please reference catalog pages for proper deduct measurements for specific roller options.
7 – Options: Does the application call for any special options?
- Lagging (Natural Rubber, NBR, Neoprene, Urethane)
- Dust-proof (DP)
- Waterproof (WA)
- Brake (BR)
- Grooves (P2- standard @ 50/32 mm)
- KF – Brackets not ordered with roller
- Please reference catalog pages for options for each roller model. Options do vary by model.
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:
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)
Number of POWER MOLLERS required = F/f