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Bucket wheel excavators (BWE)
The Joint Stock Company UNEX has been manufacturing bucket wheel excavators for more than 50 years. So you can consider UNEX to be an experienced specialist in manufacturing of large-scale machinery for use in open pit-mines. The UNEX team of well-trained specialists is able and ready to react to all its customers’ individual requirements. More than 130 custom-built excavators and reclaimers can be found in e.g. Czech Republic, Russia and the Ukraine, in Bosnia and Herzegovina, Macedonia, Bulgaria, Poland and Slovakia.
There are two types of bucket wheel excavator: Compact and Classical. The division depends on the possibility of repeated assembly and disassembly.
1. It is not possible to assemble and disassemble the Classical BWE. The excavator moves on either a caterpillar or walking undercarriage. Their capacity ranges from 1 200 to 6 500 m3/h and the specific cutting force from 90 to 168 kN/m. According to the adjustable distance between the wheel and the axis of the machine, classical BWEs are divided into two groups: excavators with a telescopic bucket wheel boom (KU 300 and KU 800) and without a telescopic bucket wheel boom (K 2000).
2. The Compact BWE can be repeatedly assembled and disassembled. Their capacity ranges from 400 to 2 800 m3/h and the specific cutting force from 25 to 145 kN/m.
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Hitachi's nine models of large excavators range in size from 40 tons to 780 tons. This broad range of machines allows you to choose the type that fits your exact construction needs. With the ability to keep running for 24 hours straight, these machines have exceptional durability. Their endurance is further proven by the ultra-large excavators, which have working-time records of over 90,000 hours. This kind of performance is not surprising when you consider that our corporate policy is to never release equipment that is not field ready. We have built high user confidence and an excellent reputation over the years by realizing that, to meet the challenges of mining, our customers must have great performance.
In mining, cost efficiency is also important. Hitachi's excavators provide one of the lowest cost-per-ton options for moving materials in their class. Low maintenance cost and long life make for machines that give you significant savings.
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Hitachi is the world's market leader in large hydraulic excavators. Combining engineering excellence with a dedication to quality, we make tough machines with long life that meet the challenges of mining.
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Opencast Mining Systems
Opencast mine
Germany
1x bucket ladder excavator ER710/340
on crawlers
refurbishing
cutting height 15.5 m
excavation depth 16 m
year of construction 1974
coal 3500 m³/h
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Opencast Mining Systems
Opencast mine
Germany
1x bucket wheel excavator SR1301/1532
refurbishing, bucket wheel head with drive unit
driving power of bucket wheel 500 kW
cutting height 26 m
excavation depth 5 m
number of buckets 14
year of construction 1986
coal 3500 m³/h
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Sandvik bucket-wheel excavators are designed to strip overburden and mine coal, lignite and various soft minerals continuously. With capacities from 150-10000 m3/h (loose), they are capable of mining formations with compressive strengths of up to 20 MPa. Controlled by state-of-the art PLC systems with extensive automation possibilities, they have ergonomic, user-friendly interfaces for operator comfort, quick familiarization and sustained high productivity. Since they are of modular construction, Sandvik bucket wheel excavators are easy to optimize for different applications. All units are custom-built and made to order.
Our standard range of compact bucket wheel excavators is designed for small to medium-size opencast mines. All models are of rugged, rational construction, highly productive for their size and weight and very reliable. Models with higher capacities are of the C-frame design. Basic data for the most popular models is given in the table below.
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FLSmidth RAHCO's Continuous Excavators provide clients with a cost-effective, efficient and flexible method of extracting material from a vertical face or a thin horizontal seam. The horizontal rotary cutter cuts a smooth floor for crawler track operation.
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Combining engineering excellence with a dedication to quality, we make tough machines with long life that meet the challenges of mining.
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Giant-sized productivity based upon Hitachi's theory of evolution
Twin Cummins diesel engines provide 2,600 HP
Efficient E-P control system adjusts power for the work being performed
Optimum Hydraulic Systems (OHS)TM ensures smooth and efficient implementation of simultaneous hydraulic operations
A large bucket design enhances digging and loading operations
Hitachi exclusive auto leveling system boosts productivity during leveling operations
Rigid box design resists bending and twisting forces
Rigid boom and arm includes cast iron boss with collar increasing the durability of the structures
A Hitachi exclusive solid cast track frame improves strength and reliability
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A 17 tonne narrow width, low height powerful Back Hoe machine with Loading Bucket, Hydraulic Impact Hammer and Transverse Cutting Unit attachements with Quick Hitch facility for ease of mode changing
The machine is of modular construction for ease of assembly, transportation and maintenance.
The LD2000’s compact size and low ground pressure (1 kg/cm2) is designed to be extremely advantageous both in manoeuvrability and flexibility of operation.
The machine is designed to operate in a 2m high roadway
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Hydraulic Excavator RH 40-E
Product Overview
Operating Weight:
- Face Shovel 105 t (116 sht)
- Backhoe 105 t (116 sht)
Engine Output - SAE J 1995
- Caterpillar C18 (Tier 3) 522 kW (700 HP)
- Cummins QSK 19-C (Tier 1) 477 kW (640 HP)
Standard Bucket Capacity:
- Face Shovel (SAE 2:1) 7.0 m³ (9.2 yd³)
- Rock Backhoe (SAE 1:1) 6.0 m³ (7.8 yd³)
- M.E. Backhoe (SAE 1:1) 7.0 m³ (9.2 yd³)
Features
3-circuit hydraulic system
Pump Managing System (PMS)
Torque control in the swing circuit
Independent bypass cooling system
TriPower attachment
Automatic central lubrication system
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Hydraulic Excavator RH 120-E
Product Overview
Operating weight:
- Face shovel 284 t (313 sht)
- Backhoe 287 t (316 sht)
Engine output SAE J 1995 :
- 2 x Caterpillar C18 (Tier 3) 1044 kW (1400 HP)
- 2 x Cummins QSK 19C (Tier 3) 1008 kW (1350 HP)
Standard bucket capacity:
- Face shovel (SAE 2:1) 16.5 m³ (21.6 yd³)
- Backhoe (SAE 1:1) 17.0 m³ (22.2 yd³)
Features
TriPower shovel attachment
Independent oil cooling system
Spacious walk-through machine house
5-circuit-hydraulic system
Electronic-hydraulic servo control
Board Control System (BCS)
Torque control in closed-loop swing circuit
Automatic central lubrication system
Xenon working lights
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Hydraulic Excavator RH 200
Product Overview
Operating weight:
- Face shovel 525 t (579 sht)
- Backhoe 534 t (589 sht)
Engine output - SAE J 1995:
- 2 x Cummins K 1500E (Tier 2) 1880 kW (2520 HP)
Optional for high altitudes:
- 2 x Cummins KTTA 38C 1680 kW (2250 HP)
Standard bucket capacity:
- Face shovel (SAE 2:1) 26.0 m³ (34.0 yd³)
- Backhoe (SAE 1:1) 28.0 m³ (36.6 (yd³)
Features
TriPower shovel attachment
Independent oil cooling system
Spacious walk-through machine house
5-circuit-hydraulic system
Electronic-hydraulic servo control
Board Control System (BCS)
Torque control in closed-loop swing circuit
Automatic central lubrication system
Xenon working lights
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Hydraulic Excavator RH 340
Product Overview
Operating weight:
- Face shovel 552 t (608 sht)
- Backhoe 547 t (603 sht)
Engine output - SAE J 1995:
- 2 x Cummins QSK 45 (Tier 1) 2240 kW (3000 HP)
Standard bucket capacity:
- Face shovel (SAE 2:1) 34.0 m³ (44.5 yd³)
- Backhoe (SAE 1:1) 34.0 m³ (44.5 yd³)
Features
TriPower shovel attachment
Independent oil cooling system
Spacious walk-through machine house
5-circuit-hydraulic system
Electronic-hydraulic servo control
Board Control System (BCS)
Torque control in closed-loop swing circuit
Automatic central lubrication system
Xenon working lights
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Hydraulic Excavator RH 90-C
Product Overview
Operating Weight:
- Face Shovel 172 t (190 sht)
- Backhoe 175 t (195 sht)
Engine Output SAE J 1995:
- 2 x Caterpillar C18 (Tier 3) 858 kW (1150 HP)
Standard Bucket Capacity:
- Face Shovel (SAE 2:1) 10.0 m³ (13.1 yd³)
- Backhoe (SAE 1:1) 10.0 m³ (13.1 yd³)
Features
Two-Motor Concept
Independent oil cooling system
3-circuit-hydraulic system
Electronic-hydraulic servo control
Board Control System (BCS)
Torque control in closed-loop swing circuit
Automatic central lubrication system
Xenon working lights
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Hydraulic Excavator RH 400
Product Overview
Operating weight: 1000 t-class
Engine output: SAE J 1995 3360 kW (4500 HP)
Bucket capacity: Face shovel 90 t (metric)
Features
TriPower shovel attachment
Independent oil cooling system
Spacious walk-through machine house
3-circuit-hydraulic system
Electronic-hydraulic servo control
Board Control System (BCS)
Torque control in the swing circuit
Automatic central lubrication system
Xenon working lights
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Hitachi quarry and mining sized excavators are known worldwide. Models include the EX1200, EX1900, EX2500, EX3600, and the EX5500. A new, even larger model will be announced at MINExpo 2004. Hitachi quarry and mining excavators are available in both front shovel and backhoe configurations.
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Bucket wheel and bucket chain excavators are important products designed for mining the overburden. The first bucket chain excavator of our own construction called D 800 was manufactured in 1952, with an output of 1 050 m3/h and moved on rails. The most effective bucket chain excavator is marked RK 5000 and it achieves an output of 5 000 m3/h of excavated overburden.
Our production range covers also the biggest digging wheel excavator of the Czech Republic, the K 10000, which has been working with an output of 10 000 m3/h of excavated overburden in Bílina mine since 1978.
Bucket-chain and bucket-wheel excavators are designed according to specific requests of customers, always with respect to the actual mining conditions in which they will operate.
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Parallel to Bucket Wheel Excavators Tenova TAKRAF has a long tradition delivering Bucket Chain Excavators (BCE) applied for similar material conditions. Bucket Chain Excavators are continuous cutting machines with the ability of excavating below the bench (travel) level in case of an instable pit floor or a high level of ground water (Even working under water is possible).
Tenova TAKRAF offers Bucket Chain Excavators with capacities between 1000 and 3000 m³/h and cutting depths/heights between 5 and 16/19 m.
Characteristic for a Bucket Chain Excavator are the bucket chain, the superstructure with counterweight boom/platform, the sub-structure with rail or crawler track undercarriage. A transfer boom is necessary only for block operation.
Several modes of operation are possible when using Bucket Chain Excavator. The Bucket Chain Excavator travels on rails rectangular to the direction of the pit advance. The material is transferred to a cross pit Conveyor Bridge or falls on a bench conveyor right beneath the excavator.
Another alternative is a crawler track propelled machine working in block operation together with a shiftable bench conveyor with or without a Mobile Transfer Conveyor.
The largest Bucket Chain Excavator ever built is a Tenova TAKRAF ERs 3750 with a maximum capacity of 14500 m³/h and a cutting depth/height of 31/34 m - that is still in operation.
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Bucket wheel and bucket chain excavators are important products designed for mining the overburden. The first bucket chain excavator of our own construction called D 800 was manufactured in 1952, with an output of 1 050 m3/h and moved on rails. The most effective bucket chain excavator is marked RK 5000 and it achieves an output of 5 000 m3/h of excavated overburden.
Our production range covers also the biggest digging wheel excavator of the Czech Republic, the K 10000, which has been working with an output of 10 000 m3/h of excavated overburden in Bílina mine since 1978.
Bucket-chain and bucket-wheel excavators are designed according to specific requests of customers, always with respect to the actual mining conditions in which they will operate.
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Bucket Wheel Excavators (BWE) are continuous cutting machines for soft to semi hard materials like clay, sand, gravel, marl and their blendings as well as lignite and hard coal. Tenova TAKRAF Bucket Wheel Excavators excavate a wide range of capacities between 200 and 16000 m³/h and at working bench heights from less than 5 m to maximal 51 m.
The Bucket Wheel Excavator is favorable connected to a belt conveyor system with or without a Mobile Transfer Conveyor intermediately installed or a cross pit spreader transferring the material to the waste dump or the raw material stockpile.
According to local mine conditions Compact and Large Bucket Wheel Excavators are offered - whereas the selection mostly is determined by required cutting height and width (working block).
The characteristic parts of a Bucket Wheel Excavator are the cutting wheel with buckets, the wheel boom, the superstructure with counterweight boom, the substructure, the undercarriage with crawler tracks and a transfer boom to the bench conveyor (or a connecting bridge to the loading unit). All main parts are designed to meet the demands of the project regarding optimization, standardization and maintenance. Therefore, Tenova TAKRAF stands with more than 100 years of Bucket Wheel Excavator-experience.
Bucket Wheel Excavators are among the largest terrestrial vehicles ever constructed - the biggest machine built, the Tenova TAKRAF SRs 8000, has a weight of 14.200 t and moves 240,000 m³ of overburden per day.
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SC330.7 Excavator
- International famous Brand Engine, 6 Cylinder, Direct Injection, Turbocharged. Even in the worst environment, it can work normally. It is an ideal super machine for the customers.
- Superior electronic-controlled system make the engine and hydraulic system to reach perfect match and performance. Abundant functions and modes further improve the operation and makes it rapider, stronger and more energy-economized.
- Highly tough structure and enduring working equipment are controlled world high-class cylinder pump valve and motor etc.
- Due to its block design the machine can be mounted and repaired conveniently, and reduce the maintenance cost.
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The integrated engine oil and filter system extends service intervals. This combines the oil stabilizing systems, Reserve and Centinel, with the Eliminator self cleaning oil filter to extend, with oil analysis, the oil change interval to 4000 hours.
Make and model 2 x Komatsu SDA16V160
Type 4-cycle, water-cooled, direct injection
Aspiration Turbocharged and aftercooled
Number of cylinders 16
Rated power @ 1800 rpm
(SAE 1995/J1349) 2 x 2,010 HP 2 x 1500 kW
Governor All-speed, electronic
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Cat Front Shovels make quick work of the toughest face loading applications. These machines combine advanced features with a heavy-duty frame and undercarriage designed specifically for your aggregates and mining applications.
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MTS MEGA VAC
Performance Data
Max. Suction Depth 25 m +
Max suction distance 120 m +
Technical Data
Container
Spoil capacity 10 m³
Turbines
Multiple
turbine technic
Type Quad turbine
MEGA VAC
Air flow 36.000 m³/h
Negative pressure 55.000 Pa
Turbine performance 2 x 110 kW + 2 x 110 kW
Suction performance In pairs single
controllable (2 + 2)
Suction hose boom
Suction boom a) MTS Telescopic boom extendable up,5 m / 6,5 m
b) MTS Power Arm extendable up to 8 m
Suction hose Ø 250 mm
Air compressor
Air volume 4,5 m³/min at 8 bar
Dust free filter system
3-stage self-cleaning system
based on cyclonique principle
coarse separator, fine separator and fine filter cartridges
Isonorisation
Transport vehicle
Gross weight 32 t
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MTS Suction Excavator DINO 2
Performance Data
Max. Suction depth 20 m
Max suction distance 100 m
Technical Data
Container
Spoil capacity 4,5 m³
Turbines
High performance turbines
(Turbo) Multiple
turbine technic
Type Single turbine
DINO 2 - 4 Double turbine
DINO 2-4 MEGA Quad turbine
MEGA VAC
Air flow 25.000 – 32.000 m³/h 36.000 m³ /h 36.000 m³/h
Negative pressure Max 20.000 Pa 34.000 Pa 55.000 Pa
Turbine performance 100 – 160 kW 2x 110 kW 2 x 110 kW + 2 x 110 kW
Suction performance in stages controllable in stages controllable In pairs single controllable (2 + 2)
Suction hose boom
Suction boom a) MTS Telescopic boom extendable up to 5,5 m / 6,5 m
b) MTS Power Arm extendable up to 8 m
Suction hose Ø 250 mm
Air compressor
Air volume : 4,5 m³/min at 8 bar
Dust free filter system
3-stage self-cleaning system
based on cyclonique principle
coarse separator, fine separator and fine filter cartridges
Isonorisation
Transport vehicle
Gross weight 18/19 t
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MTS Suction Excavator DINO 3 (26t)
Performance Data
Max. Suction Depth 20 m
Max suction distance 100 m
Technical Data
Container
Spoil capacity 8 m³
Fans
High performance turbines
(Turbo) Multiple
Turbine technic
Type Single turbine
DINO 2 - 4 Double turbine
DINO 2-4 MEGA Quad turbine
MEGA VAC
Air flow 25.000 – 32.000 m³/h 36.000 m³ /h 36.000 m³/h
Negative pressure Max 20.000 Pa 34.000 Pa 55.000 Pa
Turbine performance 100 – 160 kW 2x 110 kW 2 x 110 kW + 2 x 110 kW
Suction performance in stages controllable in stages controllable In pairs single controllable (2 + 2)
Suction hose boom
Suction boom a) MTS Telescopic boom extendable up to 5,5 m / 6,5 m
b) MTS Power Arm extendable up to 8 m
Suction hose Ø 250 mm
Air compressor
Air volume 4,5 m³/min at 8 bar
Dust free filter system
3-stage self-cleaning system
based on cyclonique principle
coarse separator, fine separator and fine filter cartridges
Isonorisation
Transport vehicle
Gross weight 26 t
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MTS Suction Excavator DINO 4
Performance Data
Max. Suction Depth 20 m
Max suction distance 100 m
Technical Data
Container
Spoil capacity 9-10 m³
Fans
High performance turbines
(Turbo) Multiple
Turbine technic
Type Single turbine
DINO 2 - 4 Double turbine
DINO 2-4 MEGA Quad turbine
MEGA VAC
Air flow 25.000 – 32.000 m³/h 36.000 m³ /h 36.000 m³/h
Negative pressure Max 20.000 Pa 34.000 Pa 55.000 Pa
Turbine performance 100 – 160 kW 2x 110 kW 2 x 110 kW + 2 x 110 kW
Suction performance in stages controllable in stages controllable In pairs single controllable (2 + 2)
Suction hose boom
Suction boom a) MTS Telescopic boom extendable up,5 m / 6,5 m
b) MTS Power Arm extendable up to 8 m
Suction hose Ø 250 mm
Air compressor
Air volume 4,5 m³/min at 8 bar
Dust free filter system
3-stage self-cleaning system
based on cyclonique principle
coarse separator, fine separator and fine filter cartridges
Isonorisation
Transport vehicle
Gross weight 32 t
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Compact excavator L520B
Compact multipurpose excavator for mining and shaft construction
specially designed for use in confined spaces
versatile applications by use of add on tools
hydraulic quick coupling system for add on tools
optimized transport dimensions
easy assembly and maintenance
extra wear-resistant design of all components
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