SD7 BULLDOZER

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Main specifications

Operatingweight(not including ripper)--------------------------------------------------------------------------------23800㎏

Ripperweight---------------------------------------------------------------------------------------------------------------3900㎏

Groundpressure(without ripper)----------------------------------------------------------------------------------------71.9kPa

Trackcenter distance ----------------------------------------------------------------------------------------------------1980mm

Gradeability ---------------------------------------------------------------------------------Latitude30 ° Transverse 25°

Groundclearance ----------------------------------------------------------------------------------------------------------404mm

Overalldimensions(L×W×H) ： -------------------------------------5677×3500×3402(with straighttilting blade)

Diesel engine specifications

Model A-----------------------------------------------------------------------------------------------NT855-C280(Cummins)

Ratedspeed------------------------------------------------------------------------------------------------------------2100RPM

Flywheelpower(speed at 2100 rpm) ----------------------------------------------------------------------------------169kW

Min.Fuel Consumption ---------------------------------------------------------------------------------------≤235(g/Kw.h)

Model B-----------------------------------------------------------------------------------------------C6121ZLG10(Shanghai )

Ratedspeed------------------------------------------------------------------------------------------------------------2100RPM

Flywheelpower(speed at 2100rpm) ---------------------------------------------------------------------------------169kW

Min.Fuel Consumption ----------------------------------------------------------------------------------------≤222(g/Kw.h)

Theorytravel speed (km/h)

1stgear forward0-3.9 1st gear backward 0-4.8

2ndgear forward0-6.5 2nd gear backward 0-8.2

3rdgear forward0-10.9 3rd gear backward 0-13.2

Dozingoperation rate(moving distance 40m) 350m³/h

Torqueconverter

Torqueconverter used in SD7 bulldozer is power separating hydraulic-mechanic type.

Transmissionassembly

Itintegrates center drive, transmission and speed changing control valve into onecomponent. It can be assembled or disassembled as a assembly or as a part. Itis very convenient to service. Transmission is multi-stage planetary gear driveto realize modular assembling and disassembling. The shift can be changed among1st gear, 2nd gear, 3rd gear forward or reverse rapidly, throughmulti-functional control valve.

Steeringand braking clutch

Steeringclutch and braking clutch are adjustment free, oil-type , multi-disc clutch.The braking clutch is pressed by spring, separated hydraulicly, constant meshedtype. Steering clutch is hydraulic pressed, non-constant engaged clutch. Theaction of steering and braking is combined, operation manually to realizesteering slowly, sharply and braking. The braking of entire machine can berealized through the pedal. Parking braking rod is designed to keep theundercarriage system in braking condition when starting the engine andguarantee the machine not to slip on slope when starting the engine.

Finaldrive

Finaldrive is two-stage planetary reduction gear mechanism. It is mounted at outsideof steering and braking clutch. Combined sprocket segment is very convenientfor assembling, disassembling and service.

Hydraulicsystem of the machine

Itis composed of oil pump, transmission control valve, steering and braking controlvalve, sequence valve, relief valve at torque convertor outlet, filter andlines.

Mainpump-------------------------------------------------------------------------------------------------------------Gearpump

Oilflow----------------------------------------------------------------------------------------------------------------160　L/min

Workingpressure ------------------------------------------------------------------------------------------------------3.1　MPa

Rops with air conditioner cab

Thecab is hexagonal thin wall box-type structure. Glass is mounted at sixsides with wide viewing area. Pulling and pushing glass is installed at backside. Air conditioner is top-mounted with functions of cooling and heating. Thestructure of Rop is rigid. It can protect the driver efficiently when thebulldozer is in special condition.

Implementhydraulic system

Implementhydraulic system can control lifting, lowing and tilting of the blade. It alsocan control lifting, lowing of the ripper. It mainly consists of oil pump,cylinder, inlet valve group diverter valve group, oil tank line and controllingparts.

Mainpump ------------------------------------------------------------------------------------------High pressure gear pump

Oilflow --------------------------------------------------------------------------------------------------------------194　L/min

Systemworking pressure-------------------------------------------------------------------------------------------18.6　MPa

Leftand right undercarriage system

Thetrack is triangle shape. The sprocket is elevated. There are two idlers infront and at rear of the frame and seven track roller. Recoil spring andcylinder adjuster is mounted at the undercarriage. The rear end ofundercarriage frame is supported on the pivot. The front end is articulatedwith the equalizer bar. Choosing different undercarriage system according todifferent implement. The customer is required can guarantee center gravity ofthe machine to be at best efficient position. Choosing different width of trackshoe can ensure the bulldozer developing its optimum traction efficiency.

Maintenancefilling capacity

Fueltank --------------------------------------------------------------------------------------------------------------------- 450L

Watertank of cooling system ---------------------------------------------------------------------------------------------118L

Camshaftbox of the engine-------------------------------------------------------------------------------------------------20L

Bevelgear case--------------------------------------------------------------------------------------------------------------150L

Implementoil tank---------------------------------------------------------------------------------------------------------100L

Pivotlubricating tank-------------------------------------------------------------------------------------------------------15L

Finaldrive ------------------------------------------------------------------------------------------------------------------15L

Optional implement and components (*ordinary)

1)cab

A、Rops with air conditioner cab 　＊

B、Rops cab

C、Rops canopy

2)Frontmounted implement

A、straight tilting blade　　　　　　＊

B、Angle blade

C、U-type blade

3)Rearmounted implement

A、single shank ripper　　　＊

B、three shanks ripper

C、back drawing mechanism

4)Trackshoe of undercarriage

Optionaltrack shoe width

A、510mm B、560mm 　　　　＊

C、660mm D、914mm

5)winchdozer used in forest, desert dozer, LGP dozer ,HW dozer can be chosen accordingto special requirements of customer.

Q:Komatsu D60P bulldozer shaft broken _ how?: Two, how to avoid the accident caused by broken shaft?Both the Mcpherson suspension and the double wishbone suspension have two opposing vulnerabilities:1. steering rod: the front of the wheel is introduced, the role of the steering rod is to transfer the lateral pulling force of the steering machine, the structure is slim, so it is easy to bend when the larger pressure or impact force is encountered;2., the joint of the lower arm and the knuckle. Because the position should swing (steering), and up and down movement (over rough roads), based on the flexibility needs, this position parts are compact, so it is easy to be damaged by the art, as the joint. When the position is broken, it may be either the knuckle fracture or the broken arm of the bottom arm.

Q:What pancakes be considered crepe's If I ran it over with a bulldozer?: It would depend on what was between the 'tracks.' 8~)

Q:It is level bottom land with about 7 stumps per acre and some low spots that are wet. I want the land cleared and leveled to drain for pasture. I need to know how many hours per acre a dozer will take to do this.: it all depends on how big the stumps are how far you have to push them and how much dirt you need to move to fill in low spots my suggestion is that if it's going to be pasture is to take a trackhoe and dig the stump then take another bucket or two of dirt out of the hole turn the stump upside down and cover with the dirt this is much faster than pushing stumps out with a dozer also instead of hiring by the hour get bids for the job then it doesn't matter about the size of the equipment how long it takes or the skill of the operator unless you are doing yard work the bigger the dozer the cheaper it is it will cost more per hour but you will get more work per hour the cost per hour on a D6RXL is $125 per hour 8 hour min. 345B trackhoe is $125 per hour 8 hour min. both of these machines weigh about 45000LBs each

Q:This quad core clocked two times higher than the 6 core, two cache and three cache is higher than the 6 core, but less than the core, please expert advice, thank you!: FX-4100 can only be considered dual core, and in most cases, performance is not very different from dual coreThe bulldozer is modular design, two core shared a floating point unit, which lead to low floating-point power, CPU is more since the floating-point calculation was in most of the time, the results are wonderful AMD designed as the two core with a floating point, lead to single core performance than the previous generation CPU, regressive type development1055T is standard, each core is equipped with a floating point unit, the 6 core is a total of 6 floating point units, 4100 only 2, playing games, the difference is very large

Q:What is going on with the Samoan Bulldozer?: he had an injury and so he is out for a while but it shouldn't be too long hell he could be atop smakcdown if they use him right!!

Q:what is the worst movie you have ever seen?: Open Water, Catwoman, Napoleon Dynamite, Howard the Duck, The Incredible Hulk, High Tension: not a bad movie, but a terrible, awful, dumb ending, which ruined it! They are in no particular order, they all sucked equally, although some more than others.

Q:i recently just bought a new gaming computer from ibuypower. it isnt supposed to come untill january, and as i was looking over the order sheet, i realized i bought an amd fx 8150 CPU 3.60 GHz. after looking online and doing some research, i found that ALOT of people are saying that the amd bulldozer is an epic fail. BUT i do have a high end graphics card. (amd radeon hd 6970) will i be able to run games at a good fps with this CPU/ GPU combination? please no intel or amd fanboy comments, im only looking for facts, not opinions. thanks in advance.: Sadly, yes. The bulldozer series was a pretty big flop. However, they overclock VERY well(overclocked mine a whole 1 Ghz with multipliers alone, and it runs very cooly), so that should definitely help with performance. You do have a pretty good GPU, so that should definitely make up the difference. The only reason people say that they are terrible though is because of the price to value ratio. The fx-4100, which is what I have, performs really well, especially for its price. It's just not the best on the market. PLus, if you look at the benchmarks, it falls behind intel by just a bit, but its low price makes up for it. So overall, you could have gotten a better CPU for the price, but since it has an AM3+ socket, you probably got a motherboard that supports that, and that type of socket is more future proof.

Q:FX4130 and II X4 bulldozer AMD phenom 955 which is better?: Because the FX4130 itself is not as good as the K10 core architecture, so run the game can not beat X4 955, if X4 955 overclocking, that is greater performance gap.

Q:the Palestinians too?under the tracks like Dogs or sub-humans!!!: Probably. They've even run over Americans. See: Rachel Corrie By the way, there is a D11 that is bigger than the D10.

Q:Recently purchased a used Komatsu D21P dozer from a friend who was the second owner and only had one key to the machine. I would like to get an additional key, but don't know if all komatsu's are keyed alike (the same way Caterpillar is) or if each machine has a unique key (like an automobile)?: most heavy equipment is keyed alike,email their techline and ask.man i could use that machine around here today,snow from knee to hip deep,and the tractor wont start.case tractor with a single old battery.geez even if itll turn fast enough,the fuel is prolly gelled lol.

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