Applications

Example 1

Overload Protection/Torque Limiting/Soft Start

Information Required:

Motor HP = 1/10 HP
Motor RPM = 900 RPM


Material Handling
(conveyer)
How To Size:

HP
X 63000
1/10
X 63000
Torque
(lb. in.) =
=
=
7 lb. in.
RPM
900

Select MTL 25 based on 7 lb. in. at
900 RPM, unit will operate at maximum limit of continuous duty range.

Example 2

Nip Roll or Pully Tension Control

Information Required:

Nip roll or pully diameter (in.) = 3 in. = .25 ft.

Tension (lb.) = 2.5 lb.

Velocity (feet per min.) = 300 FPM


Film Tensioning
(Paper, Film or Foil)

How To Size:

Pully/
Roll Dia
3
Torque
(lb. in.) = Tension (lbs.) X
=
2.5 X
=
3.75 lb. in.
2
2

 

Velocity
(FPM)
300
Check
Operation RPM =
=
=
382 RPM
(π)
X Roll Dia. (ft.)
3.14
X .25

Select MTL 10 based on 3.75 lb. in.
at 382 RPM, unit will operate within continuous duty range.

Example 3

Cycling

Information Required:

Slip RPM – 350 RPM
Torque (lb. in.) = 8 lb. in.

Duty Cycle = 25%

How To Size:

Select MTL 10 based on 8 lb. in.
at 350 RPM, unit will operate within intermittent duty range (25%
duty cycle).

Capping
(syringes or bottles)

Example 4

Unwind Tension Control

Information Required:

Full roll diameter (in.) = 6 in.

Empty (core) diameter (in.) = 3 in = .25 ft.
Average Tension (lb.) = 1 lb.

Velocity (feet per min.) = 150 FPM

How To Size:

Pay-Off
(film or wire)
Full
Roll Dia. (in.)
Empty
Dia. (in.)
6+3
9
Average
Diameter (in.) =
+
=
=
= 4.5 in.
2
2
2
2
Average
Dia. (in.)
4.5
Average
Radius (in.) =
=
= 2.25
in.
2
2
Average
Torque (lb. in.) = Average Tension (lb.) X Average Radius
(in.) = 1 (lb.) X 2.25 lb. (in.) = 2.25 lb. in.
Velocity
(FPM)
150
Check
Operation RPM =
=
=
191 RPM
(π)
X Core Dia. (ft.)
3.14
X .25

Select MTL 5 based on torque 2.25
lb. in. at 191 RPM, unit will operate within continuous duty range.