Caldwell Bucket Elevators are designed for optimum efficiency and
ease of maintenance to deliver me commodity wim virtually no damage.
Our exclusive low praflle head design prevents breakage by eliminating
damage causing impact points. We fabricate our components from heavy
gauge material wim hard tooled multiple punch setups, automated
numerical controlled punch machines and fixture welded assemblies.
Caldwell's attention to detail, such as 1/4" (6.35mm) uremane
liners, easy oren hinged discharge inspection door, bearing jack
bolts and stops, lifting hooks, and head hood slide clamp s pravide
extra convenience to a quality system.
Combining our manufa.cturing sta.nda.rds, hea.vy duty ma.terials,
efficient designs and yea.rs of experience, results in a. state
of the art product that provides unrelenting performance for years
duty crown faced slide lagged or vulcanized lagged drum head pulleys
are purchased from a company who mainly manufactures pulleys for
the mining industry. The head pulley utilizes the XT Bushing System
developed especially for Bucket Elevator applications. This system
provides a better concentrated grip to help eliminate !he possibility
of the pulley "walking" the shaft. The standard slide
lagging or vulcanized rubber lagging used is rated "S.O.E"
static conducting, oil resistant, and fuel retardant.
Convenience, safety and strength are three words that describe Caldwell
Bucket Elevators. . . especially the boot section. The same manufacturing
and quality material standards from the head section, are incorporated
into the boot section. Our unique hat section bottom panel is built
2 1/4" (57.15mm) off the ground to prevent material fram standing
in shallow water. Elevators with capacities as low as 1250 CFH have
boot sections manufactured fram 7GA (4.55mm) hot ralled material
or 8GA (4.26mm) galvanized steeL Between the boot side panel and
the bearing take up plate is a 1/8" (3.17mm) thick UHMW plastic
sheet to act as both a shaft seal and bearing surface for no seize
travel of the bearing take up plate. There are several inspection
doors on the boot section, including two pulley bushing access doors
which allow inspection and maintenance of bushings.
Both manual or gravity type take up boot sections are offered, with
a choice of either pillow block bearings for standard conditions
or extended mount flange bearings for extreme dust type applications
of dense or powder type materials.
Series 200 and 300 hall bearing pillow blocks are used for standard
application and series 200 and 300 hall bearing extended mount flange
bearings are used in severe dust type applications. Shafts are fabricated
from a minimum CRI045 material.
An inspection door located on each side of the boot section provides
access to the XT Bushing System on the heavy duty drum or self-clean¬ing
Each boot section comes standard Wlth 45° cleanout sections
on each end panel.
Caldwell takes great pride in producing the straightest and truest
trunk sections possible. Each section starts by welding the trunk
flanges together in the flange welding fixtures. The flanges are
gang punched so every hole is posi¬tioned exactly in the same
place in every flange. The trunk bodies run through the leveling
table one by one to correct any twists to insure all sections are
as straight as possible. The sections continue through the state
of the art trunk table, where machined surface face plates are pinned
for each hole of each size of trunk flange. The face plates then
mount to a fixed bulkhead at one end and a hydraulic operated bulkhead
at the other end. A clinometer measures the angle of the bulkheads
clown to the seconds. Each trunk section is bolted together to reconfll'ill
their straightness. This thorough process, enables Caldwell to provide
the straightest and truest trunk sections available.
The 5' heavy duty inspection section comes with replace¬able
front and back covers are interchangeable to allow the inspection
pocket to be placed in either the upper or lower position. An easy
open inspection door allows you to view the fill of the buckets.
The 45° inspection pocket prevents material buildup.
Trunk sections are available in several types of construction.
Trunking sections with lockfonn seams come in 14GA (2mm) painted
and galvanized sections with angle reinforcing when required. Also
offered are continuously welded 12GA (2.75mm), lIGA (3.13mm), 7GA
(4.55mm), and 1/4" (6.35mm) plate painted trunk sections, and
we manufacture 12GA (2.75mm), lIGA (3.13mm), and f!I2sA (4.26mm)
dust tight bolt together galvanized trunk sections. The end flanges
on each trunk section are continuously welded on all construction
types. (12GA bolt together trunk shown)
A complete line of Polyethylene buckets is offered with either PVC
or rubber covered belting. Steel or stainless steel buckets are
available in standard or digger type designo Urethane or nylon buckets
can be provided for extreme applications. For the seed industry,
1/2" (12.7mm) bucket spacers are available.