Quanzhou Sanqi Engineering Machinery Co.Ltd

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Caterpillar Bulldozer Spare Parts, Bulldozer D4 Track Roller

Caterpillar Bulldozer Spare Parts, Bulldozer D4 Track Roller

Material:50MN
Color:yellow
machine type:crawler tracked bulldozer

Product Introduction

We vigorously expand the domestic and foreign markets, strive to climb the peak of the Mini Track Roller EX30, Track Roller PC130-7, carrier roller pc100-3 pc120-3 pc100-5 pc120-5 industry, and develop towards modularization, groupization and internationalization. With the improvement of people's living standards, in order to meet the needs of the demand groups, our management reform has rapidly won the recognition of numerous well-known enterprises and consumers. Our company is customer-oriented, striving to create value for customers with the best personalized service.

Track Roller D4

The track roller d4 is used to support the weight of bulldozers, so that the track moves along the wheel. Its main structure includes axle, wheel body, end cover, axle sleeve and sealing components. The axle consists of the wheel body installation section located in the middle and the end cover installation section located on both sides of the wheel body installation section. The wheel body is set on the wheel body installation section, and the axle sleeve is set between the wheel body and the wheel body installation section. The cover sleeve is arranged on the end cover installation section. Usually one end of the axle is connected with the oil supply source, and the other end is opened on the oil circuit outside the wheel body installation section. When working, the lubricant from the oil supply source is transferred to the axle sleeve through the oil circuit to lubricate the axle sleeve.

bottom roller

bottom roller d4 can be divided into rigidly connected bottom roller and elastically suspended bottom roller. The structure and characteristics of single-flanged and double-flanged track rollers and their arrangement sequence in bulldozer undercarriage are introduced respectively. Rigid connection supporting wheels have the characteristics of simple connection mode and are suitable for small and medium power bulldozers. The elastic suspension lower rollers are divided into K-type suspension and X-type suspension. Both kinds of elastic suspended supporting wheels can give full play to the role of all supporting wheels to improve traction and adhesion performance of bulldozers and ride comfort of drivers. K-type suspension has better adaptability to uneven ground than X-type suspension.

track roller assy

lower roller d4 are filled with lubricating oil in order to meet their normal working needs and ensure their service life. This requires that the supporting wheels have good sealing performance, and oil leakage can not occur. Therefore, floating oil seals are usually installed on the supporting wheels, but when the internal cleanliness of the supporting wheels decreases and the internal lubricants are mixed with impurities, it will not only aggravate the relative wear of internal components, but also directly or indirectly lead to the damage of floating oil seals, and then develop into the ultimate failure of the supporting wheels due to oil leakage.



Models for below machine of bottom rollers:

MODELS   FOR TRACK ROLLERS AVAILABLE FROM US.
KOMATSUPC05/PC07PC12R/PC15RPC10-7PC20/30PC20/30(Rubber   Tracks)

PC50MR-2PC56PC75-3PC75UU/PC78PC60-6(Rubber   Tracks)

PC60-6PC60-7   MF/IFPC60-5PC200-7PC220/240-7(Large)

PC300-8PC400-3/5PC400-6PC400-7PC650-5

PC20R-8PC30MR-1PC40/45PC40MR

PC100-/3/5PC120-3PC200-5PC200-3

PC300-3PC300-5PC300-6PC300-7

PC1000-1



HITACHIEX08EX12/15EX30-1EX30-2EX55/ZX55/ZAX60

EX60-2/3EX300-5/EX350EX70/75EX90-1ZAX330-3(electronic   injection)

EX220-/1EX270-1/EX300-1EX400-1EX400-3/5EX100M-1/EX150-1

EX40-1EX40-2EX50EX60-1

EX100-2/5EX200-1EX200-2EX200-5

EX100-1EX60-5VOLVO360

HYUNDAIR55-7R60-5R60-7R130R250/R290/R320

R225-7R290LC-7R360LC-7R450

R200/R200LR80R200-3R210LC-7
CATERPILLARE303E120B/E110/E120E312E55/E305.5E70B/(Bilateral)

E240E300BE300E322E325

E200B/E320E200BE323E324

E330E450


KOBELCOSK020SRSK024/SK025SK035SRSK045SRSK330-6.8

SK100/120SK060/SK75SK120-WSK07-1SK400-3/SK450/SK460

SK200-/3/5SK045(10tons)SK200-6SK200-8ZAX330-3(electronic   injection)

SK260/SK250-8




SK030SK042-1SK042-2SK045

SK07-2SK07N2SK300SK300-5

SK220-3SK220-5SK310SK320
SUMITOMOSH30SH55/SH65SH60(D)SH60(S)SH100/SH120(S)

SH220(D)SH300-1(S)SH300-1(D)
SH100/SH120(D)

SH350SH280SH340(S)SH340(D)SH430(S)

LS2800FJ2LS3400FJ2LS5800FJ2


SH120-A3SH200(S)SH200(D)SH220(S)

SH300-3(S)SH300-3(D)SH300-2(S)SH300-2(D)

SH430(D)SH580(S)SH580(D)LS2600FJ2
DAEWOODH55DH60DH80DH150DH180/200/220

DH450DH360/370/400/420



DH280-3DH258DH300

KATOHD140HD250HD308HD400-1HD400-2

HD820HD1250HD1250-7HD1430HD1880

HD770HD450HD550HD700/770

HE280



YUCHAIYC18YC35YC60YC85YC135






KUBOTAU15-3U30-2U40-2U50U85






YANMARVIO30-2VIO40-2/B50VIO50/55K030H45






MITSUBISHIMS110-5MS110-5MS230







VOLVOEC55EC210EC290EC360EC460






IHISCEIHI30IS35IHI45JIHI50JMM45T

龙工60SWE50SWE70


SY55SY215(375)SY215(370)LG922
FIATFH150FH200-3FH220-3FH300FH330






SAMSUNGSE130SE210-3








CRANEHD408SD082100601   LS120LS108

LS108SMTL7055GLT240IHI400

KH125KH125310KH180-1KH180-3

KH150ED4000GLT118EDSC6

IHI200IHI500KH100DKH100-3
KOMATSU/CAT/Bulldozers   Series


BD2G S/FBD2G   D/FD20   S/FD20   D/FD31   D/F-15/16D31   S/F-17/18/20
D4 S/FD4   D/FD4D   S/FD4D   D/FD50   S/FD50   D/F
D60 S/FD60   D/FD6H   S/FD6H   D/FD7   S/FD7   D/F
D85-18 S/FD85-18   D/FD155-1   S/FD155-1   D/FD155-5   S/FD155-5   D/F
D60/D65-8 S/FD60/D65-8   D/FD275A-5   S/FD275A-5   D/F

D3C S/FD3C   D/FD41A-6   S/FD41A-6   D/F

D5 D/FD5   S/FD6D   S/FD6D   D/F

D7G S/FD7G   D/FD80-12   S/FD80-12   D/F

D355 S/FD355   D/FD65EX-12   S/FD65EX-12   D/F


Our company adheres to the development and innovation, keeps improving, and its production and sales increase year by year, and has become an advanced enterprise in the Caterpillar Bulldozer Spare Parts, Bulldozer D4 Track Roller industry. In the future, we will continue to uphold the value of 'customer first, win-win cooperation', provide cost-effective products, application solutions and technical support for global users, and strive for success together. Through years of continuous efforts, our company has accumulated rich experience in the research, development and manufacturing process, and has a number of professional engineering and technical personnel.

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