Transcript
SR-5 SERIES MINI EXCAVATORS
SR-5 Series
Note: This catalog may contain attachments and optional equipment that are not available in your area. And it may contain photographs of machines with specifications that differ from those of machines sold in your areas. Please consult your nearest KOBELCO distributor for those items you require. Due to our policy of continuous product improvements all designs and specifications are subject to change without advance notice. Copyright by No part of this catalog maybe reproduced in any manner without notice.
Inquiries To: 17-1, Higashigotanda 2-chome, Shinagawa-ku, Tokyo 141-8626 JAPAN Tel: +81 (0) 3-5789-2146 Fax: +81 (0) 3-5789-2135 www.kobelco-kenki.co.jp/english_index.html
is the corporate mark used by Kobe Steel on a variety of products and in the names of a number of Kobe Steel Group companies.
Bulletin No. SR-5 SERIES MINI-106
2010082000 Printed in Japan
An Evolutio nary Leap: The Ultra-Compact Ye t Tough SR-5 Series
Mini excavators are the machine of choice for small jobs where space is limited, like garden construction and pipe laying. In addition to their minimized tail swing radius, minis have also developed excellent performance characteristics and maneuverability that have broadened their usefulness for many different types of jobs. Now KOBELCO has taken the next evolutionary step by packing even more digging power and practical performance features into the new SR-5 Series while maintaining zero tail swing. No matter what the operation—digging, swinging, loading or dozing—these machines deliver unprecedented performance that will be profitable for owners while fully satisfying the most demanding operator. The SR-5 Series offers further refinement of the reliable mechanisms that have earned KOBELCO a reputation for excellence around the world. But that's not all. Our engineers have also kept the environment in mind when developing their designs, ensuring that the SR-5 machines clear all of the latest exhaust-gas regulations. Thanks to KOBELCO, mini excavators have just taken an evolutionary leap forward, with more powerful performance packed into less space than ever before. 1
1 Ample Performance: Capacity, Power and Speed Operability, ability to work well in small spaces, excellent side-ditch digging performance
2 Profitable Operation Zero swing radius means safe operation to the rear, minimizing repair costs and allowing the operator to concentrate efficiently on the job at hand
3 Highly Reliable Construction Construction that supports high-level performance
4 Easy Maintenance Quick and easy daily machine care
5 Comfortable Work Environment Long hours of operation without fatigue
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PERFORMANCE
Fast, Full-Powered Digging and Leveling Powerful Digging Performance Integrated-Flow Pump System (Three Pumps)
Smooth, Precise Lever Control
The instant the machine begins to dig, extra output from the third pump (which otherwise powers the swing and dozer circuit) is directed to the arm circuit for added power. This ensures fast and smooth arm operation even under heavy loads.
The control valves are carefully adjusted to precisely regulate hydraulic flow when the attachment and other systems begin moving, providing the operator with smooth, pinpoint control. Attachment lever touch
Large-Capacity Engine
Speed (amount of hydraulic flow)
The SR-5 mini excavators are built for hard work. Thanks to IFPS (IntegratedFlow Pump System) and a largecapacity engine, the hydraulic flow is more efficient than ever before, with a sensitive responsiveness that reduces cycle times. This combination of tough power and speed greatly increases hourly digging capacity.
Powerful and Efficient Dozer Performance
The large-capacity engine meets Tier III requirements and packs plenty power for outstanding hydraulic performance.
New Dozer-Blade Shape Previous machine New machine
KOBELCO’s unique blade design solves this problem by forming the earth into an arc that always falls forward. Because this prevents earth from falling behind the blade, only “one pass” is needed. (Patent pending)
The distance between the bucket and dozer blade has been minimized to make surface sweeping more convenient.
Maximum Approach Angle of 38° The dozer blade can be raised much higher than before. With a maximum approach angle 38°, it’s easy to ride the machine up over mounds of earth, or to load the machine onto a truck for transport.
Lever angle
38°
Hydraulic Pilot-Controlled Dozer Operation Lever The dozer lever features hydraulic pilot control for precise handling.
Zero tail Swing and Excellent Side-Ditch Digging
More Travel Power Larger-capacity travel motors provide more travel torque (an increase of 25% in the SK30SR), resulting in powerful travel.
Optimized Bucket/Blade Positioning
Dozer operations are an indispensable part of pipe laying, ditch digging, and other jobs that require leveling, compacting and refilling. To meet this need, the SR-5 mini excavators combine a powerful travel system with a highly efficient dozer blade that moves earth with less waste. The result: more work completed in less time.
Optional Steel Shoes/Rubberpadded Shoes
Automatic Two-Speed Travel
The steel shoes have holes that hold specially designed rubber pads to protect the road surface.
An automatic shift function ensures smoother, more efficient travel on the worksite. The large capacity travel torque enables the machine to perform spin turn in low mode even when the dozer is pushing a heavy load.
Steel shoes
Rubber-padded shoes
Stability Further Improved SK55SR is the SK50SR with additional ‘add-on’ counterweight. Increased stability bolsters working performance. (Specifications vary with region)
Excellent Safety and Operating Efficiency The zero tail swing means that the operator doesn’t have to worry about the rear of the machine when swinging. He can concentrate instead on the job in front of him, which increases performance efficiency.
Tail overhang:
Boom Offset Function
Small Operating Footprint
The boom offset function makes it possible to do parallel digging without moving the undercarriage, resulting in precise and safe ditch digging and pipe laying operations.
The combination of the side-ditch digging function and zero tail radius makes it easy to dig next to walls, with a compact operating footprint that makes digging, swinging and dumping possible in very limited spaces.
0 mm*
Excellent Stability
The travel lever is fitted with a button for easy switching to Hi-Mode travel.
The front crawler idlers have been adjusted to increase the area of contact between the crawler shoes and the ground. This reduces vibration when traveling. On the SK30SR and SK40SR, stability is enhanced even more by longer crawlers equivalent to what would be used on machines the upper class. Reduced vibration when traveling
Crawler Length: 3
SK30SR + 150 mm SK40SR + 150 mm
* Except SK20SR, SK55SR
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DURABILITY
MAINTENANCE
Exceptional Endurance
Easy Maintenance
Highly Reliable Construction
Easy Daily Maintenance
The boom, arm and swing bracket all have large cross-section areas that provide added strength to the attachment. This mechanical strength is complemented by a high-strength power line and enhanced cooling function for even more solid power.
Start-up checks are essential for safe and reliable machine operation. With the SR-5 machines, all start-up checks can be performed at ground level, with an easy-to-understand layout and cover design that simplify access and reduce check times.
•Stronger Boom and Arm
1. Forged boom top 2. Self-locking pins firmly lock the boom and arm to prevent the boom top from opening laterally. 3. Stronger box-section boom 4. Reinforced arm handles diverse applications.
8 2
4 7
1
5
9 6
Routine Maintenance Ground-level start-up checks 1 Hour meter can be checked from the ground.
•Bucket
3
2
1. Cast idler links provide greater strength. 2. The bucket’s hydraulic piping passes through the arm bracket for added protection.
•Dozer
1. Increased torsional strength in dozer arms 2. Dozer’s hydraulic piping is easily replaced 3. Dozer cylinder cover
• Fuel tank can be filled from the ground.
•Swing Bracket
1. Large, thick cast-iron swing bracket 2. Plate-type pin prevents unwanted rotation
•
Reinforced Lower Structure
3. Plate pins prevent idler-pin rotation.
• Resin fuel tank resists rust and is removable for easy cleaning.
Easy Cleaning
3 Right cover has a small window that makes N&B selection easily.
6 Radiator is easy to clean.
A compartment cover under the seat provides easy access to electrical components.
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9 Oil pan for engine oil filter.
The plate engages with the idler boss to prevent the pin rotating. Pin with plate
Outstanding Cooling Performance 4. Newly shaped bucket New bucket
Previous bucket
The sharp edge penetrates more easily.
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The high-performance, high-capacity radiator and oil cooler, coupled with larger engine-oil capacity, deliver a heat balance that’s comparable to a fullsize machine.
Highly Reliable Power Plant The size of many of the engine components has been increased for improved reliability, including: a large battery, large-capacity radiator, largecapacity oil cooler, and increased starter-motor and alternator capacities.
Large-Size Components 1. Breather prevents malfunctions in hydraulic components. 2. Large battery and large-capacity radiator 3. Large-capacity oil cooler 4. Increased starter-motor capacity 5. Increased alternator capacity
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• Two-piece floor mats for easy washing. • The floor plate has no projections, making it easy to wash down and wipe dry.
• Quick drain for engine oil provided as standard.
Exclusive Super-Fine Filter This exclusive super-fine filter is environmentally friendly, lasts 1,000 hours, and is easy to replace. (X 250)
Wider opening cover provides easy access to valves. 5
(X 250)
No tools needed for fuel-tank drain cock. 8
Cleaning Conventional filter
Super fine filter
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COMFORT
Comfortable Work Environment
SAFETY
Operator Safety
Newly Developed ROPS Cab
Spacious Work Environment
Deformed pipe is used in the cab frame to increase rigidity, resulting in a 50% increase in durability and service life.
Broader floor space and a greater sliding range for the seat give operators plenty of foot room. Wide operational space is provided with more room between the left and right control consoles.
Exclusive, Newly Designed TOPS/FOPS Canopy The newly designed three-support TOPS/FOPS canopy ensures easy access, and provides an open view of digging operations when swinging.
Note: Specifications for the cab and canopy differ depending on the region.
Amenities Levers, instruments, and accoutrements have been laid out with a priority placed on ease of use, straightforward access, ergonomic positioning, and clear visibility. Front window features gas damper cylinders for smooth and easy opening.
Monitor display panel set at an easy-to-read angle Storage compartment for personal items Room light, coat hook and safety hammer
Photo includes optional wrist rests.
Easy Access
The Most Foot Room in Its Class
Work Lights
A wide-opening door and a left-hand control box with safety lever that rises higher than before, make it much easier for operators to enter and exit the cab.
The seat has ample space for sliding forward and back.
Work lights have been added on both sides to provide a clear view during nighttime operations.
Wide Cab Entryway
Wider front window ensures an open, panoramic view.
1. Wider door opening 2. Front-window link does not obstruct cab entryway 3. Large, sturdy door handle
Easy-access, easy-turn ignition with rubber boots for protection against moisture and freezing
Visibility
Retractable seat belt
Cup holder
Optional wrist rest
door handle
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Easy-access grease-gun holder
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WORKING RANGES & DIMENSIONS
DOZER BLADE Width x Height Working Ranges (Height/Depth) SWING SYSTEM Swing Motor Swing Brake Parking Brake Swing Speed Tail Swing Radius Min. Front Swing Radius
Over The Front
30.0 {0.31} 28.0 {0.29}
28.0 {0.29} 27.0 {0.28}
33.0 {0.34} 32.0 {0.33}
25.0 {0.26} 24.0 {0.25}
mm mm
1,400 x 300 425/290
1,500 x 300 445/335
1,550 x 345 560/410
1,700 x 345 540/440
505/325
At Full Boom Swing SIDE DIGGING MECHANISM Type To The Left Offset Angle To The Right
300
750 2,060 1,830 1,780 1,570
775 2,280 1,920 2,100 1,590
60 55
60 55
70 60
980 2,290 2,100 2,010 1,740
70 60
° 60 55 °
2,500 520
300
1,510
250
1,440 1,590 1,980 2,410
1,250 1,500
Figures in [ ] are for Canopy.
(Unit: mm)
185
400 27.0 {0.28} 26.0 {0.27}
4,930 4,780
30.0 {0.31} 28.4 {0.29}
1,960 x 345 495/375
8.8 {8.8} 980
1,080 2,340 2,150 2,130 1,770
2,280 [1,920]
85
70 60
R775
4,470 1,840 1,380 775
1,550
2,110
1,620
300
Boom swing degree degree
90
1,500 610 555 445
1,990
42 (63)
27.0 {0.28} 26.0 {0.27}
8.7 {8.7} 740/700: Canopy 2,030 1,800 1,750 1,560
1,720 1,360 750
4.6 2.8
Axial piston motor Hydraulic brake Oil disk brake 8.9 {8.9} 850 2,340 2,040 2,170 1,690
4,130
1,400
2 x 57.1
mm kPa {kgf/cm2} kPa {kgf/cm2}
min-1 {rpm} mm Cab mm Canopy mm Cab mm Canopy mm
250
45
2,570
Ground Pressure
4.1 2.3
2 x Axial piston motor Hydraulic motor per motor Oil disk brake per motor 4.5 2.5
2,060 [1,830]
R750
570
Cab Canopy
20 (25)
Two variable displacement pumps 2 x 38.4 23 {235} 38 (48)
2 x 26.4
km/h
YANMAR 4TNV88 Water-cooled, 4 cycle, 4 cylinder, direct injection, diesel 29.3/2,400 {41.3/2,400} 131.3/1,440 2.189 53
4,640 4,510
° 60 ° 70
L/min MPa {kgf/cm2} L
1.56 35.3 {3,600} 26.3 {2,680}
(Unit: mm)
170
345
•
SK55SR SK55SR-5 5,260 4,980 0.21 750
1,550 660 660 50
kW/min-1 {PS/rpm} N m/min-1 L L
YANMAR 3TNV82A YANMAR 3TNV88 Water-cooled, 4 cycle, 3 cylinder, direct injection, diesel 15.9/2,200 {21.6/2,200} 21.2/2,400 {28.8/2,400} 79/1,320 98.0/1,440 1.33 1.642 28 38
SK50SR SK50SR-5 4,770 4,630 0.16 650
560
Power Output Max. Torque Displacement Fuel Tank HYDRAULIC SYSTEM Pumps Max. Flow Relief Valve Setting Hydraulic Oil Tank (System) TRAVEL SYSTEM Travel Motor Travel Brake Parking Brake Travel Speed (High Low) CRAWLER Shoe Width
SK40SR SK40SR-5 4,340 4,200 0.14 600 1.43 35.3 {3,600} 22.0 {2,250}
410
Type
SK35SR SK35SR-5 3,720 3,580 0.11 600 1.32 27.4 {2,790} 18.7 {1,910}
4,260 [4,470] 3,200 [3,310] 2,970 [3,170] 1,140 [1,250]
Bucket Capacity Bucket Width (With Side Cutter) Arm Length Bucket Digging Force Arm Crowding Force ENGINE Model
SK30SR SK30SR-5 3,140 3,000 0.09 500 1.18 27.4 {2,790} 17.2 {1,760}
2,540 2,320 2,010
kg kg m3 mm m kN {kgf} kN {kgf}
SK27SR SK27SR-5 2,630 2,490 0.08 500 1.12 22 {2,240} 14.8 {1,510}
4,430 [4,770] 3,400 [3,580] 3,050 [3,360] 1,220 [1,380]
Cab Canopy
Machine Mass
SK20SR SK20SR-5 2,240 2,100 0.066 450 0.98 19.3 {1,970} 13.7 {1,400}
2,810 2,310 2,160
GENERAL MODEL Type
335
SPECIFICATIONS
1,550 1,700 2,150 2,630 Figures in [ ] are for Canopy.
1,250 1,550
70 60
WORKING RANGES & DIMENSIONS (Unit: mm)
(Unit: mm)
5,240 5,110
250
1,150 1,400
Figures in [ ] are for Canopy.
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3,290 [3,580] 1,270 [1,410]
60 ° ° 70
1,700 660 660
R850
4,710 1,910 1,460 850
1,670
345
2,370
570 2,570
540
1,550
440
4,660 [4,980] 3,620 [3,780] 480 2,460
1,350 1,490 1,870 2,260
60
3,080 2,600 2,390
3,820 1,710 [1,670] 1,350 [1,310] 740 [700]
300
1,470
290
1,620
2,340 [2,040]
R740 [R
425
1,400
700]
° 60 55 °
45
3,660 [3,960] 2,850 [3,000] 2,470 [2,720] 975 [1,130] 2,300 1,790 1,720
1,400 610 555 90
4,190 4,060 2,030 [1,800]
160
50
170
300 1,400 1,700
1,600 1,700 2,150 2,680
Figures in [ ] are for Canopy.
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WORKING RANGES & DIMENSIONS LIFTING CAPACITIES
(Unit: mm)
115
5,660 5,510
60 °
1,960 750 725 70
2,290 [2,100]
A: Reach from swing centerline to bucket hook B: Bucket hook height above/below ground C: Lifting capacities in kilograms Shoe: Rubber shoe Dozer blade: Up Relief valve setting: 23.0 MPa
R980
° 70
Rating over front
400
B 2.0 m 1.0 m G. L. -1.0 m
635 2,600
345
3,740 [3,910]
SK20SR
505 325
1,770
2,630
2,960
2,140 1,570 980
A
2,540 3,390
5,000
1,940
1,440 [1,530]
4,080 [4,170]
5,310 [5,490]
Rating over side or 360 degrees 0
1,630 1,970 2,480 2,860
1,560 1,960
kg kg kg kg
Standard arm: 0.98 m Shoe: 250 mm 1.0 m 2.0 m
*1,040 *1,770
SK30SR A
*1,040 *1,770
820 780 780
570 530 540
SK27SR 3.0 m
*440 420 400
A B 3.0 m 2.0 m 1.0 m G. L. -1.0 m -2.0 m
330 300 290
Standard arm: 1.18 m Shoe: 300 mm 1.0m
kg kg kg kg kg kg
Standard arm: 1.12 m Shoe: 250 mm 1.0m 2.0 m
*1,620
*1,620
2.0 m
*1,090 1,040 1,050 *550
3.0 m
*410 *470 560 530 530
770 730 740 *550
4.0 m
*410 450 420 390 390
3.0 m
350
260
4.0 m
Figures in [ ] are for Canopy. B 2.0 m 1.0 m G. L. -1.0 m -2.0 m
(Unit: mm)
5,890 5,750
140
kg kg kg kg kg
*1,170 *1,810
1,080 1,040 1,050 1,100
*1,170 *1,810
880 840 850 900
570 540 530
370 350 340
480 450 440
310 300 280
60 ° ° 70
SK35SR
R980
A B 3.0 m 2.0 m 1.0 m G. L. -1.0 m -2.0 m
5,230 2,140 1,570 980
495
1,940
kg kg kg kg kg kg
400
635 2,600
345
1,780
375
SK40SR
2,810
3,160
725
1,960
3,910 [4,090] 1,430 [1,510]
5,480 [5,670]
4,200 [4,290]
25
2,760 3,590
750 70
2,340 [2,150]
A B 3.0 m 2.0 m 1.0 m G. L. -1.0 m -2.0 m
1,690 1,970 2,480 2,910
1,560 1,960
Figures in [ ] are for Canopy.
kg kg kg kg kg kg
SK50SR A B 4.0 m 3.0 m 2.0 m 1.0 m G. L. -1.0 m -2.0 m
(Unit: mm)
190
5,890 5,750
60 ° ° 70
A B 4.0 m 3.0 m 2.0 m 1.0 m G. L. -1.0 m -2.0 m
2,600 400
635
345 1,560 1,960
kg kg kg kg kg kg kg
SK55SR
2,240 1,670 1,080
495 1,780
375
2,810
3,160
R1,080
5,230
1,940
2,760 3,590
70
75
3,910 [4,090] 1,430 [1,510]
5,480 [5,670]
4,200 [4,290]
1,960 750 725
2,340 [2,150]
1,690 1,970 2,480 2,910
kg kg kg kg kg kg kg
Standard arm: 1.32 m Shoe: 300 mm 1.0m
*1,820 *2,590
2.0 m
*1,360 1,540 1,550 *1,430
*1,820 *2,590
Standard arm: 1.43 m Shoe: 400 mm 1.0m
*1,540 *2,110 *3,050
*1,540 *2,110 *3,050
Standard arm: 1.56 m Shoe: 400 mm 1.0m
*2,410 *3,430
*2,410 *3,430
2,420 3,780
2,420 3,780
1,640 2,980 3,030
1,300 1,270 1,280 1,320
1,870
1,750 1,880 1,940
1,550 1,570 1,630
2.0 m
11
1,060 960 900 900 930
*1,420 1,300 1,240 1,230 1,260
2.0 m
1,560 1,480 1,430 1,420 1,460
490 480 450 430
4.0 m
670 640 600 570 570
930 830 780 780 810
590 560 530 500 490
4.0 m
1,090 980 930 920 940
910 910 870 820 790 780
3.0 m
1,640 2,320 2,380
*550 550 520 500
710 670 660
3.0 m
1,810 1,830 1,890
4.0 m
3.0 m
*1,980
Notes: 1. Do not attempt to lift or hold any load that is greater than these rated values at their specified load radius and height. Weight of all accessories must be deducted from the above lifting capacities. 2. Lifting capacities are based on machine standing on level, firm, and uniform ground. User must make allowance for job conditions such as soft or uneven ground out of level conditions, sudden stopping of loads, hazardous conditions, experience of personnel, etc. 3. Ratings at bucket lift hook.
Figures in [ ] are for Canopy.
820 780 780
2.0 m
*2,000 2,630 2,690
Standard arm: 1.56 m Shoe: 400 mm 1.0m
3.0 m
5.0 m
720 710 670 630 600 590
580 570
4.0 m
1,320 1,230 1,180 1,180 1,210
1,010 1,000 980 940 910 910
450 430
5.0 m
850 860 830 790 770 760
670 650
560 550
4. The above rated loads are in compliance with SAE Hydraulic Excavator Lift Capacity Rating Standard J 1097. They do not exceed 87% of hydraulic lifting capacity or 75% of tipping load. Rated loads marked with asterisk (*) are limited by hydraulic capacity rather than tipping load. 5. Operator should be fully acquainted with the Operator's and Maintenance Instructions before operating this machine and rules for safe operation of equipment should be adhered to at all times. 6. Capacities apply to only machine as originally manufactured and normally equipped by KOBELCO CONSTRUCTION MACHINERY CO., LTD.
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