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Shortstop
3.5 Yard Concrete Mixer Product Detailed Specifications
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Mfg:
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Ernest Industries, Inc.
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Model:
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Shortstop 3.5 ® |
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General:
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The unit is a self-contained transit-type drum concrete mixer complete with planetary gear reduced
drive, hydraulic drive system powered by chassis engine, self contained water system for
slump control and wash down. It is equipped with removable chute assemblies for
positioning wet concrete and the unit is capable of agitating and transporting 3.5 cubic
yards of concrete at a reasonable slump. Operator controls are situated on the rear of the
unit and in chassis cab for constant drum speed and direction. The drum is capable of 18
RPM at 1500 engine RPM in both directions.
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Dimensions:
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The mixer body has the following dimensions:
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OAL:
| 152" (excluding chutes) |
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OAW:
| 62" |
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OAH:
| 68" |
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Weight:
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Approximately 3,450 lbs less water and concrete
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Drive:
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22:1 planetary drive, designed specifically for a transit concrete mixer. The drive unit
features 9 degrees oscillation to compensate for drum misalignment, heavy-duty cast
iron housing with ball bearings, ensuring many years of reliable service.
Hydraulic motor, directly coupled to reducer with oscillating mount design, 5000 psi
maximum operating pressure.
Hydraulic pump, pressure compensated pump, capable of generating 3000 psi; directional
valve mounted on pump. Pump is a closed-loop system with charge pump and charge
filter. Pump can be coupled directly to truck engine crankshaft, flywheel PTO drive, live
power automatic transmission mounted.
Hydraulic reservoir, is fabricated from 1/4" carbon steel plate and features one 6" diameter
inspection cover. The reservoir is equipped with a return canister type filter with 1"
NPT. The inlet of the reservoir is equipped with a stainless steel suction strainer with
bypass. A sight level gauge and vented fill cap is provided. All high pressure hose and
fittings are rated at 2,500 psi and equipped with JIC type fittings. 15 gallon capacity.
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Drum:
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1/4" thick spun steel drum head, with reinforced machined flange to mount gear drive.
3/16" high-strength carbon steel, 100 percent welded inside and out, 1-1/2" X 2-1/2" wide
carbon steel track ring with triple sealed re-grease able carrier bearings. Carrier bearings
have hardened exterior, and mounted in an adjustable pedestal with 1.25" TGP shaft.
Charging/discharge fins: two separate helix, 2.5 revolution pitch over length of drum, 3/16"
high-strength steel, fully welded. Fins are lined with hardened 1/2" bar to prevent wear at
the tip. Fins are equipped with wash holes approximately 12" on center 1-1/2" from base of
drum. Access panel: one 22" panel is located on front of drum to access interior.
The cover is bolted to main drum with twenty 1/2" bolts.
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Frame:
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Heavy-duty structural and plate steel frame electrically welded at all joints. The mixer
is attached to the chassis with sixteen 5/8 grade 8 bolts. Eight of the sixteen bolts
are equipped with heavy-duty springs to permit flexing of the chassis frame independent
of the mixer frame.
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Discharge Chute:
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A 24" wide discharge chute at drum, tapering to 12" wide on a rotating pedestal is provided.
One each permanently mounted extension chute 34" long and two each removable chutes
34" long are standard equipment. A structural steel chute holder is provided to hold the two
removable chutes. The holder is bolted to the chassis frame and features rubber straps to
hold chutes while in transit. Manual hydraulic pump and cylinder is provided to raise and
lower the rear chute assembly. Locking mechanism for the chute assembly is operable from
either side of the unit and features a transport safety lock.
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Access Platform:
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Structural steel tube ladder leads to a non skid metal platform fully enclosed in square tube railing.
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Water System:
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80 gallon zero pressure water tank is located on the front of the mixer frame. Sight gauges and fill
ports are provided on both ends of tank. A 12VDC powered roller pump delivers water at a rate of 4
GPM with a maximum pressure of 60 psi. System includes: 25' hose; water nozzle and hanger, water
filter, tank and pump drains. Plumbing is provided to inject water into rotating drum from the
rear operations station for slump control.
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Fenders:
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Heavy-duty polyethylene fenders with structural steel brackets are provided. Attached to
each fender is one mud flap.
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Controls:
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Electronic controls for speed and direction of drum, water pump (on/off) and optional
power discharge chute control are located in the chassis cab and rear operators station.
The controls are mounted in a waterproof aluminum box and feature MIL spec waterproof
switches. Equipped with overload circuit breaker and power "on" light. All wires are
secured to mixer frame in 24" spacing.
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Finish:
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Unit is completely coated with self-etching primer and finished coated with high gloss
white paint. (single color)
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Parts and Service:
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Manufacturer carries a complete inventory of parts available for shipment within
24 hours.
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Warranty:
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Mixer body carries a one year warranty against defective parts and workmanship.
See attached "terms of sale & warranty" for detailed information.
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Operators Manual:
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One complete operators manual will be supplied with the unit. All operators of
the mixer should read the operators manual in full prior to operation of the mixer.
Serious injury or death may result from the improper or misuse of the mixer body.
Questions concerning the operation of the Shortstop Mixers call (937) 325-9851,
email: sales@ernestindustries.com.
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Specifications:
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Specifications are subject to change without notification.
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Chassis:
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Units can be mounted on a conventional or cab forward chassis. The chassis requires
a minimum 16,000-lb payload if the mixer is to be operated at full 3.5 yard capacity.
Generally, a 26,000-lb GVW chassis will accommodate the mixer. Be sure to size the
chassis to meet your DOT and chassis payload requirements.
Chassis must be equipped with either front PTO (crankshaft) provisions, rear engine PTO
(flywheel) provisions or live power from the automatic transmission. Chassis can be ordered
from manufacturer to meet mixer body requirements as well as many used chassis can be
modified to meet requirements. Consult Ernest Industries for more details.
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| Optional Equipment |
