CDM521J is a tri-drum static roller with maximum operating weight of 21 ton. This machine is featured in big linear load per unit and can be used for compacting the road surface composed of detritus, gravel, cinder, asphalt concrete and so on. It is widely used in road construction, municipal project, road embankment filling, etc.

1.Powerful Yuchai water cooled engine YC6108G
2.Rear drum drive, transmission with synchronizer, flexible shaft control
3.Articulated frames provide good maneuverability and eliminate the transverse shearing force
4.Hand brake and foot brake are available for better safety
5.Wide-view cab with front and rear lighting for night operation
6.Power-operated watering system with imported watering pump and big water tank
7.Parted engine hood with air-spring-aided opening for easy maintenance
8.Air conditioning and heating system provide good environment for operator

Specifications 

Operating weight （kg）    18000（without load）/21000（with load）
Transportation dimension
Length×width×height  （mm） 5990×2335×3490（with A/C）
                             5990×2335×3300（without A/C）
Weight burden on front drum（kg）          7500
Weight burden on rear wheel（kg）          10500
Drive static linear pressure （N/cm）        860（without load）/980（with load）
Front drum static linear pressure （N/cm）    460（without load）/565（ with load ）
Compacting thickness  （mm）             2322
Min. turning radius （mm）                 7000
Grade ability（%）                         20
Travel speed  
Ⅰ                                       2.2（km/h）
Ⅱ                                       4.5（km/h）
Ⅲ                                        9 （km/h）

Engine specifications
Model                                        YC6108G
Type                      In-line, water-cooled, four stroke, direct injection
Rated power（kw）/ RPM （r/min）                85/2000
Max. torque（N•m）/RPM （r/min）          450/1400~1600
Min. fuel consumption （g/kw•h）              235
Total displacement （L）                     6.871
Starter motor power （kw）                  6.6
Starter motor voltage （V）                  24
Injection pump                             6AD95
Fuel tank capacity （L）                    230

Axle
Final drive type              Spiral bevel gear one stage deceleration
Speed reduction ratio                        6.1667：1
Wheel hub reduction
Type..                              spur gear planet drive
Speed reducing ratio                     4.4：1

Brake system
Service brake               Air-over-oil disc brake on rear axle
Parking brake.           Manual operated brake on transmission

steering system
Type                      Full hydraulic steering system

System operating pressure                            14Mpa
A/C System
Model                                           TY40A
Refrigerating capacity                               4600W

Note: The specification is subject to change for the modification without notice.