Bulldozer D5b Track Roller Df Double Flange Steel Rollers 118-1612, Excavator Bottom Lower ...

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The bottom roller is used to support the weight of excavators and 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.

Bullozer bottom roller 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.

The lower rollers 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:

KOMATSU	PC30	PC40	PC45	PC60	PC75	PC100	PC120	PC150	PC200
	PC220	PC300	PC350	PC400	PC450	PC650
CATERPILLAR	E70B	E110	E120B	E215	E235	E307	E311	E312	E322
	E180	E240	E200B	E320	E300	E300B	E330	E325	E450
DAEWOO	DH55	DH200	DH220	DH280	DH300	DH320
HITACHI	EX30	EX40	EX60	EX100	EX120	EX200	EX220	EX270	EX300
	EX400	EX600	UH043	UH052	UH053	UH07	UH081	UH082	UH083
	UH10	UH103
FIAT-HITACHI	FH120	FH130	FH150	FH200	FH220	FH270	FH300	FH330	FH400
	FH450
HYUNDAI	R55	R60	R70	R80	R110	R130	R150	R200	R210
	R250	R290	R320
KATO	HD140	HD250	HD400	HD450	HD550	HD700	HD820	HD850	HD880
	HD900	HD1220	HD1250	HD1880
KOBELCO	SK40	SK60	SK100	SK120	SK200	SK220	SK04-2	SK04N2	SK07
	SK07N2	SK09	SK12	SK14	SK300	SK310	SK400	K904	K907
	K907
MITSUBISHI	MS110	MS120	MS180	MS230	MS280	MS300	MS350
SAMSUNG H.I.	MX8	SE200	SE210	SE280	MX292	SE350
SUMITOMO	SH70	SH100	SH120	SH160	SH200	SH260	SH265	SH280	SH300
	SH340	LS2650	LS2800	LS3400	LS4300	LS5800
BULLDOZER	D20	D3C	D30	D31	D37	D40	D41	D45	D50
	D53	D57	D58	D60	D63	D65	D68	D75	D80
	D85	D95	D135	D150	D155	D355	D3	D3L	D3D
	D4	D4C	D4D	D4H	D5	D6	D6C	D6D	D6H
	D7	D7G	D8K	D8N	D9G

We strictly control product quality, making our Bulldozer D5b Track Roller Df Double Flange Steel Rollers 118-1612, Excavator Bottom Lower ... sell well abroad. Strict good quality management, fantastic service, affordable cost in Jeddah is our stand around the premise of competitors. The company has always been adhering to the service concept of 'customer demand as the center', and business tenet of 'quality first, integrity-based'.

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