K4 Scalper Screen

Contractors choice: Heavy-duty performance, compact and productive.

Overview

Recycling

Aggregates

Sand & Gravel

Quarrying

The contractors choice due to heavy duty performance, compact transport and high productivity. Safe service access and walkways and a liftable screen box.

Capacity up to 350 t/h

Weight 24,5 t / 27 sT

Double deck screen box 4.2 x 1.5 m (14’ x 5’)

Hydraulically liftable screen box & hydraulically adjustable screen angle

Fuel efficiency & Low emission engine

Compact transport dimensions & contractor’s choice for mobility

Heavy duty design with heavy-duty apron feeder and hydraulic folding hopper walls

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Capacity up to	350 t
Weight	24,5 t (27 sT)
Screen box (l x w)	4200 x 1500 mm / (14' x 5')
Feed hopper in HB450	7 m³ / 9 yard³
Hydraulic folding hopper for transport	•
Heavy Duty Plate Apron Feeder	3150 mm x 1120 mm

Loading height

open back wall	2500 mm
half open back wall	2900 mm
closed back wall	3600 mm
Side loading length	4200 mm
Screen box l x w	4200 x 1500 mm
Upper deck m2 / feet²	6,3 m²
Lower deck m2 / feet²	5,4 m²
Hydraulic liftable screen box	•
Screen box can be set in several inclinations	6
Standard walkway beside screen box	Left side
Standard Long Life Grease: grease interval	every 100 h

Conveyor belts (l x w) & discharge height

Oversize belt conveyor (discharge height)	5000 mm x 1200 mm (3400 mm)
Fine fraction belt conveyor (left) (discharge height)	8350 mm x 900 mm (3880 mm)
Middle fraction belt conveyor (right) (discharge height)	8280 x 800 mm (3800 mm)
Track-unit: Length, total width, track shoe width	3310, 2500, 400 mm
2-speed track drive	1,3 km/h and 2,2 km/h
Engine unit(s)	55 kW/77kW
Control	PLC – IP 67 LCD screen 4,3" & remote control
Smart sequential auto start/stop from remote control	•

Wear lining in hopper HB 450: 8 mm	•
Several hopper & corner extensions	•
Feed hopper with belt feeder	•
Screen flow break	•
Anti clogging system	•
Fast tensioning system for upper deck screens	•
Dust cover for screen box	•
Walkways (both sides) beside screenbox	•
Wide range op screen media	•
Volumetric belt scale on apron feeder	•

Conveyors

Dust suppression system at conveyors	•
Picking station at oversize belt conveyor	Left & right side
Extra long oversize belt conveyor & discharge heigth	1800 mm longer
Drum magnet and chute on side conveyors	•
Tungsten scrapers	Fines conveyor (left) Under Screen Conveyor

Other options

Lubricated track chains	•
Radio remote	•
Working lights	•
Fuel filling pump	•
Heating system for engine unit: diesel and hydraulic tank	•
Telematics system UMTS/GPS	•
Lifting eyes	•

Specification	Transport dimensions	Working dimensions
Weight	24,5 t (27 sT)
Length	10.750 mm (35’3")	13.300 mm (43’8”)
Height	3.250 mm (10’8”)	3.875 mm (12’8”)
Width	2.780 mm (9’1”)	14.300 mm (46’11")

Performance highlights

Available in plug-in full hybrid version and ZERO full electric

Hydraulically liftable screen box and hydraulic adjustable screen angle.

Unrivaled performance

Standard heavy-duty plate apron feeder and hydraulic folding hopper walls.

Low emission engine and lowest fuel consumption in industry.

Double-deck screen box 4.200 × 1.500 mm (14’ × 5’).

Screening surface: 6.3 m² upper deck, 5.4 m² lower deck.

Capacity up to 350 tonnes per hour.

Feed hopper 7 m³ (9 yd³) with extensions available.

2-speed track drive.

Applications

Pre- screening/scalping

Recycling landfill and construction waste

Top soil and many other products

Separation of “sticky” aggregate

Construction and demolition waste

Sand and gravel

Quarrying

Coal

Wood and others

Screening behind or before a crusher

Fuel Efficiency

Disel/hydraulic*

*load sensing hydraulic system

12 l/h

Diesel/electric

8 l/h

Electric plug-in other machinery

3 l/h

Electric plug-in mains

32 kWh

Available drive systems

Diesel / Hydraulic

Plug-in Electric Drive

ZERO-Drive

Benefits of using Keestrack machines

Mobilní technologie

At Keestrack we understand how important mobility is to owners and operators, and this is reflected in the design and construction of our machines. Our aim is to minimize set up times, reduce overall weight and size, and get you up and running as soon as possible.

Dálkové sledování

With large fleets and multiple sites in operation it is essential that owners know the location and status of their machines in real time, 24 hours a day.

Drive systems

In 1999 Keestrack introduced a load sensing diesel/hydraulic drive system which resulted in 25% fuel savings compared to competition.

Fuel efficiency/účinnost paliva

We know our customers need exceptional power and performance, but they also want to lower their fuel costs and reduce their environmental footprint.

Úspora nákladů

Purchase price is only part of the total cost of ownership. Over the lifetime of your investment, operating costs can add up and ultimately reduce your competitiveness.