EK250
SAVANNAH • GEORGIA • USA
BELO HORIZONTE • MINAS GERAIS • BRAZIL
SÃO PAULO • SÃO PAULO • BRAZIL
THE COMPANY
• CZM has 40 years of know-how in manufacturing of foundation
equipment with a wide range of models for the most different
applications: Drilled shafts, CFA, driven piles with hydraulic hammers,
secant piles, micro piles, anchoring among others.
• CZM has 2 manufacturing facilities, one in Savannah, in the state
of Georgia, USA, and another in Contagem, in the state of Minas
02 | CZM FOUNDATION EQUIPMENT
Gerais, Brazil, from where exports for over 25 countries worldwide.
• CZM machine design’s priority is quality and after sales and
therefore uses base chassis Caterpillar.
• CZM is the largest world manufacturer of CFA drilling rigs thanks
to the revolutionary torque mechanism “Bottom Drive CFA”, an
international known CZM patent.
EK250
Mounted on a CAT336HHP
(High Horse Power).
’’
CZM FOUNDATION EQUIPMENT
| 03
APPLICATION
The EK250 from CZM has been designed for high performance and
versatility. It is a reliable drilling rig mounted on a CAT base, keeping
the operation and maintenance extremely friendly and efficient.
The EK250 rotary head has the most robust design on the market
followed with the biggest inner passage. These features allows
the EK250 to deliver higher drilling torque, the use of stronger
kelly bars and the versatility of different applications such as
EK250
BOTTOM DRIVE FULL DISPLACEMENT PILE
Depth: 88 ft / 27 m
Diameter: 24 in / 600 mm
04 | CZM FOUNDATION EQUIPMENT
Kelly Bar, CFA and or Full Displacement Pile. There is no need
in changing a single hydraulic hose for any of these applications.
This is due to the unique patented torque mechanism “Bottom
Drive CFA” exclusive of CZM.
With hydraulic extended crawlers, centralized parallelogram and the
mast made of a light weight / high yield strength “weldox” steel
enables this drilling rig the most stable of its category in the market.
EK250
DRILLED SHAFT PILE
Depth: 246 ft / 75 m
Diameter: 100 ft / 2.540 mm
EK250
BOTTOM DRIVE CONTINUOUS FLIGHT AUGER PILE
Depth: 88 ft / 27 m
Diameter: 32 in / 800 mm
TECHNICAL SPECIFICATIONS
KELLY BAR APPLICATION
Drilling Depth (standard version)
Maximum Drilling Depth
Maximum Drilling Diameter (uncased)
Maximum Drilling Diameter w/o the mast shoe
Maximum Torque
159 ft
246 ft
100 in
138 in
234,500 lbf.ft
48 m
75 m
2.540 mm
3.500 mm
318 kN
350 hp
537 in3
164 gal
261 kW
8,8 L
620 L
5,076 psi
127 gal/min
29 gal/min
67.4 gal
350 bar
480 L/min
108 L
255 L
234,500 lbf.ft
7 rpm
8-23 rpm
35-98 rpm
2 x Linde
2 x Brevini
318 kN
7 rpm
8-23 rpm
35-98 rpm
2 x Linde
2 x Brevini
69,049 lbf
49,207 lbf
176 ft/min
262 ft/min
1.1/8 in
22.5/16 in
1 x Linde
1 x Brevini
307 kN
219 kN
54 m/min
80 m/min
566 mm
1 x Linde
1 x Brevini
23,332 lbf
3/4 in
16.5/8 in
1 x Linde
1 x Brevini
104 kN
19 mm
423 mm
1 x Linde
1 x Brevini
73,326 lbf
81,814 lbf
19 ft 8 in
326 kN
364 kN
6.000 mm
19 ft 3 in
16 ft 5 in
9 ft 10 in
14 ft 1 in
31.1/2 in
51,930 lbf
3.1 mph
5.880 mm
5.000 mm
3.000 mm
4.300 mm
800 mm
231 kN
5 km/h
15º
5º
7,5º / 7,5º
15º
5º
7,5º / 7,5º
DIESEL ENGINE (CAT® C9 ACERT™)
Net Power
Displacement
Fuel tank
HYDRAULIC SYSTEM
Main circuit pressure (max.)
Main circuit Flow rate (max.)
Auxiliary circuit flow rate (max.)
Hydraulic oil tank (CAT + additional)
ROTARY HEAD
Maximum torque
Working Speed (maximun torque)
Working speed
Spin off speed
Hydraulic motor
Reducer
MAIN WINCH
Maximum pull-force (1st layer)
Maximum pull-force (2nd speed)
Line speed (1st layer)
Maximum line speed (2nd speed)
Cable diameter
Drum diameter (1st layer)
Hydraulic motor
Reducer
AUXILIARY WINCH
Maximum pull-force (1st layer)
Cable diameter
Drum diameter (1st layer)
Hydraulic motor
Reducer
CROWD SYSTEM
Cylinder Pull-down force (nominal)
Cylinder Pull-up force (nominal)
Cylinder stroke
UNDERCARRIAGE
Track length
Length to center of rollers
Transport position width (retracted)
Operation position width (extended)
Track shoes width
Maximum drawbar pull (effective)
Maximum travel speed
MAST INCLINATION
Backward
Forward
Sideways
TRANSPORT
Overall Height
Transport Lenght
Transport Width
Transport Weight
in
in
in
lb
3.295 mm
19.670 mm
3.000 mm
72.200 kg
83 ft 2 in
176,350 lb
14,2 psi
25.360 mm
80.000 kg
1 kg/cm2
10 ft 10
64 ft 6
9 ft 10
159,174
GENERAL DATA
Overall height
Operation weight
Ground pressure
Specifications based on Caterpillar base.
Specifications are subject to change without notice.
CZM FOUNDATION EQUIPMENT
| 05
50 in / 1.270 mm
EK250
16 ft 5 in / 5.000 mm
19 ft 3 in / 5.880 mm
11 ft 8 in / 3.530 mm
06 | CZM FOUNDATION EQUIPMENT
19 ft 8 in / 6.000 mm - STROKE
17 ft 7 in / 5.350 mm
67 in / 1.700 mm
83 ft 2 in / 25.360 mm
47 ft 8 in / 14.535 mm
7 ft 2 in / 2.190 mm
GENERAL DIMENSIONS
11 ft 2 in - 14 ft 9 in
3.400 - 4500 mm
31.1/2 in / 800 mm
9 ft 10 in - 14 ft 1 in
3.000 - 4.300 mm
10 ft 10 in / 3.295 mm
TRANSPORT POSITION
EK250
16 ft 5 in / 5.000 mm
18 ft 18 in / 5.690 mm
19 ft 3 in / 5.880 mm
26 ft 7 in / 8.100 mm
64 ft 6 in / 19.670 mm
10 ft 10 in / 3.295 mm
Weight: 159,174 lb / 72.200 kg
EK250
18 ft 8 in / 5.690 mm
19 ft 3 in / 5.880 mm
18 ft 1 in / 5.520 mm
56 in / 17.090 mm
20 in / 500 mm
Weight: 7,000 lb
3.200 kg
Weight: 18,700 lb
8.500 kg
40 in / 1.015 mm
93 in / 2.355 mm
29 in / 730 mm
7 in / 177 mm
50 in / 1.260 mm
43 in / 1.100 mm
Weight: 112,500 lb / 51.000 kg
85 in / 2,140 mm
83 in / 2.100 mm
16 ft 6 in / 5.880 mm
Weight: 3,700 lb
1.700 kg
Weight: 17,600 lb
8.000 kg
Weight: 2 x 15,400 lb
2 x 7.000 kg
ROTARY / TORQUE DIAGRAM
2nd Gear
3rd Gear
5
10
15
20
25
TORQUE (lbf.ft)
TORQUE (kN)
70 in / 1.760 mm
246500
232000
217500
203000
188500
174000
159500
145000
130500
116000
101500
87000
72500
58000
43500
29000
14500
0
1st Gear
0
30
ROTATION (rpm)
TORQUE (kN)
31.1/2 in / Ø 800 mm
50 in / 1.270 mm
25 in / 640 mm
83 in / 2.100 mm
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
4th Gear
5th Gear
6th Gear
0
20
40
60
80
100
120
50400
46800
43200
39600
36000
32400
28800
25200
21600
18000
14400
10800
7200
3600
0
140
TORQUE (lbf.ft)
31.1/2 in / 800 mm
TORQUE X SPIN-OFF SPEED (NOMINAL)
50.1/2 in / 1.280 mm
93 in / 2.355 mm
TORQUE X WORKING SPEED (NOMINAL)
340
320
300
280
260
240
220
200
180
160
140
120
100
80
60
40
20
0
ROTATION (rpm)
CZM FOUNDATION EQUIPMENT
| 07
KELLY BAR
Ø 18 1/2 in / 470 mm
CASED DRILLED SHAFT PILES
Reference only. Depth and diameter will depend on the soil codition.
MAXIMUM DEPTH
64 ft / 19 m
68 ft / 21 m
77 ft / 23 m
90 ft / 27 m
108 ft / 33 m
KCL
CASING DIAMETER
84 in / 2.130 mm
80 in / 2.000 mm
70 in / 1.800 mm
60 in / 1.500 mm
50 in / 1.300 mm
• Maximum length of each casing element 18 ft (5.500 mm)
• It can be optionally equipped with a casing oscillator, powered by the
drilling rig, for greater diameters and depth of casing.
90 mm 100 mm
Ø 62 mm (x2)
DPT
KOP
HGT
480 mm
EK250
200 x 200 mm
EK250
Standard 4/159 (48) Interlock
Short 4/126 (38) Interlock
Long 4/199 (60) Interlock
Short 5/159 (48) Friction
Long 5/246 (75) Friction
KCL (ft/mm)
47’8” / 14.535
39’4” / 11.985
57’6” / 17.535
39’4” / 11.985
59’11” / 18.255
KOP (ft/mm)
167’10” / 51.150
135’ / 41.150
207’1” / 63.150
167’10” / 51.150
254’3” / 77.500
WEIGHT (lb/kg)
20,060 / 9.100
16,980 / 7.700
24,470 / 11.100
16,600 / 7.500
27,600 / 12.500
The standard kelly has 4 interlocking elements and reaches 159 ft (48 m) depth.
08 | CZM FOUNDATION EQUIPMENT
HGT (ft/mm)
18’7” / 5.670
18’7” / 5.670
10’ / 3.048
18’7” / 5.670
7’8” / 2.330
DPT (ft/mm)
159’7” / 48.650
126’10” / 38.650
199’ / 60.650
159’7” / 48.650
246’ / 75.000
1.700 mm / 67 in
DRILLING DEPTH
• The largest hollow inner passage diameter
(31.1/2 in / 800 mm) of rotaries:
- Higher torque
- Stronger Kelly Bar
- Longest durability
• 2 groups of Hydraulic Motor LINDE transmitting
235,500 lbf.ft (318 kN) of torque with the
highest starting torque;
• 2 Planetary Gear BREVININI with Power-Shift for
spin-off up to 100 rpm;
• 2 Swing Bearings, one at the top and one at the
bottom of the rotary;
• Pinions and main gear designed for lifetime
operation.
Drilling 138 in (3,5 m) diameter hole on the Darney Bridge Project, WV-USA
• Crowd system performed by a 20 ft
stroke hydraulic cylinder;
• Dedicated hydraulic pump, supplying
flow to the Crowd Cylinder during the
drilling operation, keeping the flow from
the main pump exclusivity for the rotary
and main winch.
Interlocking Kelly Bar
• Large diameter tubes
(18.1/2 in / 470mm);
• Mix o “Zip-Lock” (interlocking all over the length) and
“J-Lock” (notches longer
and wider ), keeping it easy
to lock and unlock and requires less maintenance.
The most robusted rotary head in the market
CZM FOUNDATION EQUIPMENT
| 09
• The parallelogram of the EK250 is an evolution from standard
parallelograms. It is centered with the base machine instead
of frontal. It allows a much higher attachment to the mast
resulting in better stability, buckling length of the mast and
better strength for the group.
• 100% of the Hydraulic Power
is supplied to the Rotary or
the Main Winch;
• 100% of the oil is filtered and
goes through Heat Exchanger
(including drain lines);
• Extra cooling, anti-shock
and anti-cavitation system
(extra service pump) for main
components.
10 | CZM FOUNDATION EQUIPMENT
High spin-off
• The mast is made of special
steel called “Weldox” that has a
yield strength 2,8 times higher
than regular ASTM A36 steel.
It means that with less weight
the EK250 can have better
stability and displacements on
the job site and easier transport
handlings.
• The main winch is equipped with a heavy duty motor LINDE, with
Pulling Force of 69,000 lbf (307 KN) and two speeds (up to 262 ft/
mim / 80 m/mim) for higher production;
• The main winch was designed with some features to facilitate the
operation and increase cable lifetime:
- LEBUS GROOVED DRUM: In this system the cables’ line do not
touch each other sideways allowing a perfect winding;
- HYDRAULIC BOTTOM HOLE SYSTEM: This feature prevents the
cable from losing tension when the tool reaches the bottom of the
hole preventing the cable from touching the Kelly bar inner wall
while drilling and also help the winding;
- Better ratio relation between cable and drum diameter (20% over
dimensioned according to standards).
• The EK 250 is completely self-erected. The masthead and the mast pin
are hydraulic operated from inside the operator cabin for faster set-up.
• The EK250 has excellent weight and transport dimension for easy and
quick transportation. It has transport width of 9’11” (3.000 mm) and
transport height of 10’10” (3.295 mm). The transport weight of the
machines is approximately 145.000 lbs.
CZM FOUNDATION EQUIPMENT
| 11
BRAZIL
USA
WWW.CZM.COM.BR
WWW.CZM-US.COM
CONTAGEM
SAVANNAH
Avenida Sócrates Mariani Bittencourt, nº364
Cinco • Contagem • Minas Gerais
CEP 32010-010 • Tel.: +55 31 2111-6200
145 East Industrial Boulevard
Pembroke • Georgia • ZIP Code: 31321
USA • Phone: +1 912 964-2214
SÃO PAULO
Avenida Eliseu de Almeida, nº1051
Butantã • São Paulo • São Paulo
CEP: 05533-000 • Tel.: +55 11 3721-7795
Specifications are subject to change without notice.