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21Tons Middle Excavator


As a Chinese innovative heavy-equipment manufacturer, World Group has been specialized in producing wheel loaders and crawler diggers for more than 20 years, including excavating machine ranging from 15 to 24tons. This W2215-8 crawler digger is designed with 0.9m3 bucket and an operating weight of 21.02tons. The width of the track for this crawler digger is as wide as 600mm. Its 0.9m3 bucket can load materials up to 21.4tons. 
This excavating machine is equipped with an original ISUZU engine, Kawasaki hydraulic pump, Parker main valve, osan travel motor and Sungbo swing motor. The ISUZU engine has a power of 113.2kw, and this engine can work perfectly with the hydraulic pump, ensuring the smooth operation and efficient performance of this middle crawler excavator. 

Features of Crawler Digger:

1.Isuzu AA-6BG1TRP engine provides high reliability and strong power of 113.2kw. 
2.Multi-functional monitor is utilized to monitor the engine, coolant temperature, engine oil pressure, oil level, charging status, preheating indication and more. 
3.Isuzu original oil/water separator and secondary-grade oil filter to guarantee the high quality of the fuel and to extend the service life of the engine. 
4.Efficient and energy-saving Kawasaki inverted flux hydraulic system provides high performance, reliability and serviceability. 
5.Reinforced arm, boom and frame of our crawler digger delivers extended service life.
6.The combined monitor is equipped with different function switches to provide easy operation.
7.Combined monitor panel with Chinese display shows various monitoring and alarm messages to remind the operator of maintenance and repair timely. That’s very ergonomic. 
8.This 21tons excavating machine features low oil consumption, low emission, low noise level, and ease of maintenance. 

Crawler Digger Parts and Features:


The Japanese ISUZU engine features bigger power, low noise, low oil consumption and powerful driving force. 

2. Cab: 


The spacious cab is equipped with an air conditioner, shock absorbing seat and radio. The durability of the cab is improved by the model and structural design of large cross section. And the hydraulic system can be locked by the safety locking bar to avoid misoperation. The seat can be adjusted into 6 different directions.

3. Hydraulic parts (pump, valve):

The holding valves on the main valve can protect the boom and arm from falling down because of its self-weight. So the safety and reliability of the crawler digger is increased. 

4.Structural parts(bucket, chassis):



The boom, digging arm and bucket are all reinforced to meet the requirements of long-time and high-intensity use in construction and mining industries. 

5. Track:

The track of this 21tons excavating machine is famous Tuishan brand, and this track features outstanding performance. This track allows this excavator to work under various conditions

Specifications of Crawler Digger:

Items Models
Engine System
Brand & Origin ISUZU
Model AA-6BG1TRP-03
Rated Power (kW/rpm) 113.2/2100
Max. Torque (N.m) 629/1600rpm
Idle Speed (rpm) 950
Engine Displacement (L) 6.494
Engine Oil Capacity (L) 25-28
Fuel Tank Capacity (L) 437
Fuel Consumption Rate (g/kw.h) ≦237
Hydraulic System
Main Pump Brand & Origin Kawasaki
Rated Pressure (MPa) 31.4/34.3
Nominal Displacement (L/min) 220 ×2
Multiple Unit Valve Brand & Origin Parker
Rated Pressure (MPa) 31.4/34.3
Hydraulic Motor Travel Motor Brand & Origin Doosan
Traveling Speed (H/L km/h) 5.2/3.2
Swing Motor Brand & Origin Sungbo
Swing Speed (r/min) 11.5
Hydraulic Oil Tank Capacity (L) 180
Working Specifications
Weight (kg) 21020
Bucket Capacity (m3) 0.9
Bucket (mm) 1287.2
Bucket Digging Force (KN) 139
Arm Digging Force (KN) 99
Ground Pressure (KPa) 51
Grade ability 35°
Max. Digging Depth (mm) 6486
Max. Digging (mm) 10095
Max. Digging Radius (mm) 9813
Max. Discharging (mm) 7196
Min. Ground Clearance (mm) 460
Min. Swing Radius (mm) 2708
Overall Dimensions L× W× H (mm) 9400×2800×3010

All crawler excavators can be equipped with assistive devices like breaking hammer: