CAT 312D Excavator - Overview & Specifications

The CAT 312D is a mid-size hydraulic excavator in the 12-ton class, offering excellent versatility, performance, and efficiency for a wide variety of construction, demolition, and mining applications. The 312D is part of Caterpillar’s D Series, designed to be durable, fuel-efficient, and easy to maintain.

CAT 312D - Key Specifications

Engine:

• Model: Caterpillar 3054C DIT
• Type: Turbocharged, intercooled, diesel engine
• Power Output: 81 kW (108 HP)
• Displacement: 4.4 liters
• Fuel Capacity: 210 liters

Performance:

• Operating Weight: 12,200 – 12,700 kg (12.2 to 12.7 tons)
• Bucket Capacity: 0.3 – 1.0 m³ (depending on configuration)
• Maximum Digging Depth: 6,380 mm
• Maximum Reach: 9,760 mm
• Maximum Dumping Height: 7,020 mm
• Hydraulic System Flow: 227 L/min
• Hydraulic System Pressure: 34.3 MPa

Undercarriage & Dimensions:

• Track Type: Steel or rubber tracks (depending on application)
• Track Width: 600 mm
• Overall Width: 2,590 mm
• Overall Height: 2,870 mm
• Overall Length: 7,520 mm
• Tail Swing Radius: 2,480 mm (Reduced tail swing for better maneuverability)

Travel & Speed:

• Max Travel Speed: 5.3 km/h
• Gradeability: 35% (20 degrees)
• Tractive Force: 91.3 kN

Features & Benefits

✅ Powerful and Fuel-Efficient Engine:

• The Caterpillar 3054C DIT engine is designed for excellent fuel efficiency without compromising on power. This helps in reducing operating costs in the long term.

✅ High Performance and Productivity:

• The 312D offers smooth hydraulic operation and precise controls, making it ideal for tough digging tasks such as trenching, foundation work, and material handling.
• Load-sensing hydraulic system provides responsive power and reduces energy waste, enhancing productivity.

✅ Comfortable and Safe Operator’s Cab:

• Spacious and ergonomic cab with high visibility, easy-to-use controls, and air-conditioning for operator comfort.
• Low vibration and noise levels reduce operator fatigue during long work hours.

✅ Maneuverability and Durability:

• The reduced tail swing design makes it easy to work in tight spaces or on confined job sites.
• Reinforced structure for long-term durability in demanding working conditions.

✅ Ease of Maintenance:

• Designed with easy access to maintenance points, making it easier and faster to perform daily inspections and maintenance tasks.
• Extended service intervals contribute to lower maintenance costs over time.

Applications of CAT 312D:

• Construction: Excavating foundations, digging trenches, and backfilling.
• Road Building: Moving materials, compacting, and roadbed preparation.
• Demolition: Heavy lifting, breaking, and clearing debris.
• Mining: Excavating overburden, digging and handling material in quarries.
• Landscaping: Excavating for ponds, retaining walls, or drainage.

Why Choose the CAT 312D?

• Fuel-efficient: It’s designed to reduce fuel consumption, saving on operating costs.
• Versatile: With a wide range of attachments and configurations, the 312D can tackle many tasks on construction sites.
• Reliable: Built with durable components for maximum uptime and performance in tough environments.
• Easy to maintain: Features like extended service intervals and accessible maintenance points make this machine cost-effective in the long run.

We would like to personally thank you for allowing Jiangchun Trading Co., Ltd. to present our introduction, Shanghai Sunight Machinery Co., Ltd. is one of the bigger supplier and buyer of used machine in Shanghai,China.

We have a range of used construction equipment available. Everything from excavators, bulldozers, motor graders, Soil Compactors, wheel loaders and dumper trucks.

We are also have great demand on used Excavator, bulldozer, loader, grader from all over the world.

The excavator is one of the most versatile pieces of construction equipment. The different uses for the excavator include: digging, demolition, dredging, lifting and moving. Each year hundreds of used excavators are shipped to all regions of the world, especially Africa, South East Asia and the Middle East.

As for excavator, the most popular model range from Cat E70B,E120B,E200B, 320B, 320C, 320D, 336D, Komatsu PC35MR, 55MR, 60-7,78US, 120-6, 128US, PC200-6, PC220-6, PC220-7, PC300-7; Hitachi EX60, EX100, EX120, EX200, EX200-3, ZX200-6. Kobelco SK03, SK07, SK200-6, SK200-8;

As for the bulldozer, the popular model includes Cat D5C,D5G, D5K, D6D, D6G, D7G,D7H,D8K; Komatsu D65, D85-18, D155; Shantui SD13, SD16, SD22, SD32

As for the roller, the popular model includes Dynapac CA25D, 30D; Bomag BW202AD-2, BW219D-2, BW217D-2, Ingersoll rand SD100D, SD175D.

As for the grader, the popular model includes Cat 12G, 140G, 140H, 140K; Komatsu GD511A, GD611A-1

We also purchase and sell the wheel loader as below model, Cat 950C,966D, 966G, 966H; Komatsu WA320-1, 320-5, 380-3, 470-3.