Excavator and bulldozer undercarriage parts of idler and idler group assembly

Short Description:

Some komatsu dozer idler has rear and front idler such as D6H,D6T,D6R, D8N,D8T,D9N,D9T and so on.We have idlers of wheel rim casting steel and welding type, wheel rim grinding ring welding type and wheel hody casting type. The wheel body is made by high precision alloy steel and use proper heat treament to make sure the hardness on the surface and proper hardness layer.This makes the idler can work in various bad condition. High quality shaft, bushing floating sealing system and oil increase lubricant effect and reduce friction.Sliding-type leg design reduce contact pressure and wear & tear ,and prevent impact.

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Product Description

The idler (guide wheel) is used to guide the track to rotate correctly and prevent deviation and derailment. The idler (guide wheel) of some hydraulic excavators also functions as a roller, which can increase the contact area between the crawler and the ground and reduce the specific ground pressure. Most of the wheel surfaces of the idler are smooth, with a shoulder ring in the middle as the guide, and the ring surfaces on both sides can support the chain and the roller. The shoulder ring in the middle of the idler (guide wheel) should have sufficient height and the slope on both sides should be small. The smaller the distance between the guide wheel and the nearest roller, the better the guiding performance.

1-oil plug 2 support cover 3 adjusting shim 4 left carriage 5 guide axle 6 O-ring 7 floating oil seal 8 guide wheel 9 sliding bearing 11 right carriage 12 guide wheel bracket 13 stop pin 14 support spring assembly 15 spring pressing plate 16 seat plate 17 guide plate

An adjusting shim 3 is provided between the support cover 2 and the bracket to ensure that the gap between the support cover 2 and the side of the gantry does not exceed 1mm. The purpose of installing the support cover 2 is to prevent the guide wheel from tilting sideways, thereby preventing the rail from falling off. The space between the idler and the shaft 5 is filled with lubricating oil for lubrication, and the two floating oil seals 7 and the O-ring seals 6 and 10 are used to maintain the seal. The idler shaft 5 is axially positioned by a stopper pin 13.

The excavator guide wheel adopts the box structure cast by resin sand process. The appearance quality of the wheel body has reasonable mechanical structure performance. The matrix is normalized to obtain good impact resistance, and the medium frequency induction quenching heat treatment of the track surface. Surface hardness To hrc48-54, the depth is not less than 6mm, with wear resistance in harsh conditions

Material	35SiMn/40Mn
Finish	Smooth
Technique	Casting/Forging
Surface Hardness	HRC52-56 , Depth6-10mm
Colors	Black or Yellow
Warranty Time	1440 Working Hours
Certification	IS09001-9001
MOQ	2 Pieces
FOB Price	FOB Xiamen US$ 25-100/Piece
Delivery Time	Within 30 days after contract established
Payment Term	T/T,L/C
OEM/ODM	Acceptable
type	bulldozer undercarriage parts
Moving Type:	Crawler bulldozer
After-sales Service Provided:	Video technical support, Online support