Conveyor Sealing Systems
Conveyor Belt Tracking Systems
Educational workshops on Belt Conveyor
Operation, Safety, and Maintenance
800-544-2947
martin-eng.com
REDUCER SPECS
MOTOR SPECS
BRAND/ MODEL
DRIVE HORSEPOWER
MIN. TAKE-UP PULLEY
Diameter
DRIVE SPECIFICATIONS
MIN. SNUB PULLEY
Diameter
MIN. TAIL PULLEY
Diameter
MIN. HEAD PULLEY
Diameter
MIN. TRANSITION
DISTANCE
MAX. TROUGH
ANGLE OF BELT
BELT RATED PIW
ACTUAL BELT LENGTH
(Cut Length)
BELT TYPE (MFR)
BELT INSTALLED DATE
BELTING SPECIFICATIONS
RETURN IDLER
Diameter
RETURN IDLER MAKE
RATING
(CEMA A/B/C/D)
CARRYING ROLL
Diameter
CARRYING ROLL
Manufacturer
CARRYING IDLER
TROUGH ANGLE
LAGGING TYPE
IDLER SPECIFICATIONS
HEAD PULLEY
Diameter (Actual)
CONVEYOR LENGTH
(Center to Center)
LOAD CARRIED
(Tons Per Hour)
BELT SPEED
CONVEYOR ID #
BELT WIDTH
GENERAL SPECIFICATIONS
Conveyor Belt Support Systems
NUMBER OF PLIES
IN BELT
Dust Management Systems
Belt Cleaning Systems
NOTES
Unusual conditions such as crooked splice, rip repairs, structure, or
belt damage.
Belt Tracking Procedure
1. Inspect for locations of belt wander and identify
possible causes.
Possible Causes of Mistracking:
• Crooked Splices • Misaligned Structure
• Belt Camber
• Misaligned Rolling
• Belt Cupping
Components
• Excessive Belt
• Misaligned Tracking
Tension
Devices
• Uneven Take-Up • Misadjusted Skirting
Pressure
• Poor Belt Troughability
• Material Buildup on
Components
• Climate Conditions
(Sun, Wind, Rain)
• Off-center or
Segregated Loading
• Pulley Wear
2. Correct Problems.
Move around the conveyor from low-tension to high-tension areas,
making small, gradual adjustments to correct belt path. Starting from
low tension areas, work 2 or 3 rollers before mistracking is visible.
Note: Center Drive–Start after the drive pulley.
Trail Drive–Start after the drive pulley.
3. Determine Areas of Belt Tension.
Belt tension is highest at the drive pulley and
lowest immediately after the drive.
4.Track Belt Empty.
6. Then Track Belt Loaded.
Remember: Adjustments in the low-tension areas of belt have the
highest impact on the belt’s path. Keep records of problem areas and
corrections made (So you don’t correct and recorrect adjustments
already made.). Always adjust upstream. Mistracking is induced by
components prior to where mistracking is visible.
BELT DAMAGE IDENTIFICATION
EFFECT
CAUSE
CURE
Impact Damage
Large or sharp
objects land on belt
Entrapment Damage
Edge Damage
Material becomes
wedged into skirtboard
and abrades belt
Use of conveyor belt
as a dust seal
Belt mistracks into
conveyor structure
• Reduce drop height • Prevent belt sag
with rock boxes
• Make sure skirtboard
• Install impact cradles and liner provide relief
Installed engineered
dust sealing system
• Track belt
• Install training devices
• Widen conveyor
structure
© Copyright Martin Engineering Company 2001, 2012
Worn Top Cover
• Material accumulation
• Vibrating belt cleaners
• Incorrect blade angle
on cleaners
Improve belt cleaning
system
Heat Damage
Impingement
damage
Hot materials on Belt
(See Impingement
Damage)
• Install belting with higher service
temperature
• Cool product prior to conveying
• Install other type of conveyor system
Top Cover Cracking
(Perpendicular to
Belt Direction)
• Improper bend radius
• Wing pulleys
• Worn Top Cover
• Age
Install pulley(s) with
correct size
Junction Joint
Failure
Belt Cupping
Belt Does Not Rest In Idler
Trough Unloaded or
Loaded
Camber
Impingement Damage
Transition distance
too short
Exposure to
heat or
chemicals
Excessive Excessive Idler trough angle is excessive for
tension
trough
belt being used
Improper
storage
Improper
slitting
Cut edge
belt
Improper loading
• Lengthen transition
area by moving head
or tail pulley
• Install correct belt
Specify
proper belt
for conditions
Correct
tension
Proper
storage
Proper
slitting
Use
moldededge belt
Load material through Install tail
rock box or onto
protection plow
impact cradle
• Specify proper belt for conditions
• Reduce conveyor trough angle
Material lump(s)
between pulley(s)
and belt
Ply Separation
Pulley too small
• Install puleys of recommended
size for belt in use
• Install belt to match pulleys
Form No. L3584-1/12