CONVEYOR
FRAMEStructural
channel type. Model 63 constructed of 6" 8.2# channel and Model 83 constructed of
8" 11.5# channel. Side frames are assembled into a unit by bolt-connected
intermediate spreaders, fabricated from tubular members. Channel flanges are turned
"out" to prevent material "build-up" within frame. Head and tail
sections are factory assembled. Intermediate sections are shipped knocked down to save
freight and cubage charges. Factorv assembly available at slight additional charge. Head
and tail sections are 5 ft. long, and stock lengths of intermediate sections are 5, 10,
15, 20 and 40 ft. Special length sections (in one foot increments), to meet exacting
conditions, are readily available. Stock widths are 18, 24, 30, 36 and 48 inches.
For more information, See Table "A".
JOINTS
Bolted tubular frame connectors are provided between
each section to serve as an assembly fixture and to add frame rigidity.
PULLEYS
Heavy duty, all steel welded type,
individually turned and crowned to ensure true concentricity with the bore. The entire
face of the pulley is machined. Pulleys are equipped with Taper-Lock or QD hubs and
bushings.
IDLERS
MARCO Series M15 - 4 1/2" dia rolls, with
pre-lubricated ball bearings which require no further lubrication. Troughing idlers are
spaced on 4' - 0" centers with two extra at the loading point; return idlers are
spaced on 10' - 0" centers. 35o idlers are standard. Idlers of
other types and spacing are available upon request, at prices which vary with
specifications.
BELT TAKE-UP
Screw type acid cleaned and plated, providing 21"
adjustment.
RETURN BELT WIPER
"Plow type", equipped with gum rubber flashing,
and is mounted in front of tail pulley to prevent entrance of material between return belt
and pulley. The wiper is integral with the screw take-up, providing fixed relationship
between vviper and pulley, regardless of take-up setting.
ASSEMBLY BOLTS
All the field assembly bolts are acid cleaned and plated.
LOADING HOPPER
The loading hopper is 5 ft. long, 8" in depth,
depending on belt width, and is designed to appropriately center material on the
belt. It is equipped with adjustable gum rubber flashing to prevent leakage. Hopper length
can be extended to any dimension, resulting in continuous side skirts.
SUPPORT LUGS
Heavy steel lugs provide a pin-jointed connection to
either steel or timber supports. A sufficient quantity is provided for proper
support.
MOTOR SUPPORT
Integral with shaft mounted reducer wherever possible. If
conditions will not permit use of an integral motor support, then a structural steel motor
support is furnished above the conveyor belt, providing material clearance.
CONVEYOR DRIVES
Drive includes shaft mounted helical gear speed reducer
(gears are enclosed and running in oil) driver sheave, driven sheaves and vee belts.
All drive components are selected to adequately transmit horsepower required. |

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BACKSTOP A backstop is provided when conditions indicate the belt and load
will reverse under power failure. Backstop is mounted in the shaft mounted reducer, and
runs in oil.
ELECTRIC MOTORS
Horsepowers vary with capacity length and incline. Motor
sizes are selected with ample safety factors to provide an efficient and reliable power
source. 1800 RPM TEFC, Nema design "C", hi-torque, 3 phase, 60 cycle, 230-460
volt motors are considered standard. Other enclosures, and motors with other electrical
characteristics, are also available.
CONVEYOR BELT
The use of 35o troughing idlers on 4 ft. centers provides ideal conditions
for the use of belts with synthetic fabrics. Strength of fabric, number of plies, and
thickness of rubber top and bottom covers are combined to ideally satisfy the installation
requirements.
OSHA (MSHA) GUARDS
Expanded metal guards are furnished for conveyor drive and
all pulley assemblies.
OPTIONAL SPECIFICATIONS
HINGED CONVEYOR HOUSING
( Carrier Belt )
See Marco Hinged Conveyor
Housing Specifications
Hinged conveyor housing is constructed of 18 ga. corrugated
culvert sheets thru 30" width. 16 ga. above 30", mounted on 16 and 14 ga
corrugated support bands, respectively. Carrier belt is adequatley covered and troughing
idlers cannot be observed without opening housing. Support bands are mounted with
assembly bolts on 4'-8" ctrs.. and each housing section is provided with hinges for
independent raising and lowering. Covers and bands are heavily galvanized. Assembly bolts
are acid cleaned and plated.
RETURN BELT COVER
Formed 16 ga. flat sheet metal deck is provided to prevent material spillage on
to return belt. Furnished with plated assembly bolts. 'While return belt covers are
available as an option, they are generally not recommended for
most installations.
BELT WIPER ( For Head Pulley )
Equipped with double rubber squeegee and adjustable tension
spring, providing constant pressure on belt surface. Mounted under pulley to provide
greatest efficiency.
RUBBER LAGGING ( Heavy Duty ) FOR CONVEYOR PULLEYS
Heavy duty, top quality "ruff-top" rubber lagging
- can be furnished on either crown or flat face pulleys. Installed in multiples of
6", 8" and 10" widths to ensure conformity to crown face. Recommended on
drive pulleys where there is a possibility of belt slippage. Slide lagging and vulcanized
lagging optional.
CONVEYOR SUPPORTS
A-frame supports are available. Assembly bolts are acid
cleaned and plated.
OTHER OPTIONS
- Shuttle Conveyors
- Wind Guards
- Retainers
- Transition Sections
- Discharge Hoods
- Transfer Chutes
- Self-Cleaning (Wing Type) Pulleys
- Aluminum Drip Troughs
- Continuous Side Skirts
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