D7G is a very classic but relatively old model within the D7 series, produced from 1974 to 1983. Therefore, its technical features are significantly different from those of the modern D7T or the hydrostatic transmission D7. Nowadays, D7G is mainly circulated as second-hand machinery on the market.
The following are the typical technical parameters of D7G:
Key Parameters of D7G
Parameter Categories Detailed Description Engine 3306 Naturally Aspirated Diesel Engine
- Type: Inline six-cylinder, four-stroke, direct injection
- Displacement: 10.5 liters (637 cubic inches)
- Flywheel Power: Approximately 175 horsepower (130 kW) (This is the most distinctive power value for this model)
- Starting Method: Electric start, transmission system, power shift gearbox (Powershift Transmission)
- Gears: 3 forward gears + 3 reverse gears
- Features: At that time, it was advanced technology, allowing gear shifting without cutting off power, high productivity. Operating weight is approximately 20.5 tons (about 45,200 pounds)
- This weight may vary depending on whether a sanitation cab (ROPS) is equipped and different bucket configurations. chasiss system - Number of track plates (each side): Usually 27 pieces (basic configuration)
- Track plate width: Commonly 510mm (20 inches) or 560mm (22 inches).
- Ground pressure ratio: Approximately 55 kPa (about 0.55 kg/cm² or 7.8 psi), suitable for medium-hard ground. Bucket (standard) - Type: Mainly equipped with 7S straight bucket or 7U universal bucket (U-shaped bucket).
- 7U bucket capacity: Approximately 3.6 m³ (4.7 yd³)
- 7S bucket capacity: Approximately 4.0 m³ (5.2 yd³) Main Features 1. Robust structure: D7G is renowned for its durability and reliability, and many machines are still in service today.
2. Mechanical Control: The working device (bucket's lift/tilt/side shift) uses traditional mechanical linkage levers instead of modern pilot hydraulic control, making operation more laborious.
3. Simple Cab: The cab of that time had a relatively low standard, was noisy, and had much less comfort than modern models. An ROPS (Roll Over Protection Structure) cab can be optionally equipped.
Important points to consider when purchasing a second-hand D7G
Since D7G is a second-hand device, apart from knowing its parameters, the following points are even more important:
"Vehicle condition" is far more important than "parameters": For a piece of equipment that may be 40 years old, the current state (whether the engine has undergone major repairs, the wear condition of the chassis components, the presence of structural cracks, etc.) is much more crucial than the factory parameters.
Pivot component wear: Check the wear degree of the track plate, chain rail, support wheel and support chain wheel. Replacing the pivot components is the biggest expense for second-hand bulldozers.
Engine status: Check for any issues such as excessive exhaust emissions (bluish smoke), insufficient power, or difficulty in starting.
Transmission and steering clutch: During the test run, check whether each gear shifts smoothly, whether the steering is flexible and powerful, and whether there are any abnormal noises.
Hydraulic system: Check if the hydraulic cylinder is leaking oil and whether the action of the shovel is smooth and powerful.
Summary
The C A T D7G is a highly accomplished medium-sized bulldozer, renowned for its 175-horsepower reliable power and sturdy body, making it a classic of its era. Its technology represents the industrial standards of the 1970s and 1980s.
What we offer:
1) Good quality control
2) Highly competitive prices
3) state-of-art technology products
4)Our well drilling rig sales in China first, China's largest well drilling rig manufacturer
5) Smooth communication
WHY CHOOSE SPEEDMADE INDUSTRIES Co.,Ltd?
1.Our propose is to supply the most suitable borehole drilling machine to users.
You can get a full range of product selection advice and product customization without paying any fees.
2.We have two special groups of design teams. One team of after-sales engineers with more than 30 years of construction experience at home and abroad, other team of designers who graduated from well-known universities and have rich work experience. We will combine a wealth of practical construction experience and the most advanced professional theoretical knowledge to meet your various demands.
3.We are not only familiar with borehole drilling rig, but also familiar with the human environment, construction environment and strata in the construction field at home and abroad. Provide you with the greatest technical support, save costs and create the greatest value with you. Yes, choosing us is your best decision.
4. Support overseas train and maintain. We do ten days overseas train for free,after you buy our machine.
5. One year Warranty. Speedmade knows the various needs of the water well service companies and operators worldwide.
Customers who buy rigs from us can benefit from great saving thus boost their bottom line.
FACTORY SHOW
-APPLICATION RANGE-
Apply to:Water Well Drilling/civil engineering and infrastructure/for rock core drilling/geological coring exploration/Soil Testing and sampling /geophysical survey/mineral exploration and other industries.
-PAYMENT-
DIY customization: please provide your rock formation information or detailed size drawings.
Free samples: some samples can be provided free of charge.
Trading:EXW, FOB, CFR, CIF, DDU such as.
Payment:T/T L/C,D/A,D/P,Western Union,MoneyGram.
Delivery time: normally 7-12 days
-DELIVERY-
Delivery: there are four main delivery channels including air, sea, express and road transportation, which can be selected according to customers' different requirements.
Air freight logistics:DHL/UPS/EMS/TNT/ FEDEX,etc.
-PACKAGING STYLE-
-EDLIVERY-
-AFTER-SALES SERVICE-
Dear User:
Welcome you to choose and use our products correctly!
The geological drill bit produced by our company has a 6-month warranty period.In case of abnormal scrap such as sheet falling, steel body cracking, lamination of composite sheet, etc., the company may make compensation if the situation is confirmed by the quality department of the company.
If it is one of the phenomena listed in the following table, it shall be deemed as normal scrapping, and the company shall not compensate for it:
1.Drop: Wear no more than 10%, send back for replacement, wear no more than 50%, depending on the situation, steel body cracking: wear no more than 30%, send back for replacement; Wear more than 50%, such as artificial improper crack, do not change.
2.Wrong size or thread: New back for new.
3.Weak solder joints, broken wing pieces, etc. : wear not more than 20%, send back for a new; Wear more than 50%, such as artificial improper operation, do not change.
4.The problem of lamination of composite slices: It depends.
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