Crawler lower bottom roller for Komatsu D65EX-12 D50 dozer track undercarriage replacement

Komatsu tractor heavy equipment D65EX-12 D50 undercarriage parts lower track roller for excavator track repair and after market replacement

Excavator Track roller has different names Excavator bottom roller and Tractor lower roller.

Dozer track roller has two kinds.one is track roller single flange,the other type is track roller double flange,

It can be used for crawler heavy machine and crane undercarriage, such as Caterpillar,Komatsu, Hitachi,Doosan, Volvo,Kobelco,Daewoo,JCB, John Deere,Kubota,Hyundai,Sumitomo,Kato,Fiat-Hitachi,Samsung,Liebherr,Yanmar, and so on.

Track Roller Main Features:
1.Forged from deep hardening steel and heart treated for internal strength to resist bell mounting and to increase rebuilding ability.
  two pieces roller shell rim. Heat treated shells for body strength and longer wear life.
  Heat treated for a deep uniform hardened depth that provides wear life equal to link wear life.
2.Roller shaft
  shaft and bearing designed to carry and turn with heavy track weight forged and heat treated for strength.
  Bearing surfaces are hardened and polished to reduce friction and wear
  Center flange absorbs side thrust from roller shell.
3.Cast Iron bushing
 Supports the bronze sleeve bearing.
 Cast from iron to absorb loads without permanent deformation.
 Large lubricant reservoir to reduce heat build up
4.Bronzed sleeve bearing
 Sleeve design provides a large surface area for better load distribution.
  Inner diameter surface is polished to a smooth finish.
 Soft bronze coating in the bearing absorbs any small foreign particles before they can damage the shaft and seals.

Excavator and Dozer Lower Roller Functions:
1.Support the track as its most between the sprocket and idler.
2.Guide the track between the sprocket and idler
3.Strength to resist failure before tread wear life is utilized.
4.Treads wear life matched to track links.
5.Treads and flanges rebuild able on forged shells.
6.Thru-hardened flanges to resist bending and improve rebuild ability.

Komatsu Excavator and bulldozer undercarriage parts lower track roller part number and Berco number list

FAQ
1.What Xiamen Fortune Industrial Co.,Limited supply?
  We mainly supply crawler excavator and dozer undercarriage parts, such as Track roller, Carrier roller, Sprocket, Idler,Recoil spring assy, Track chain, Track shoe, Track bolt&nut,Track chain guard, Excavator bucket,Bucket teeth&adaptor, Bucket Link,Cutting Edge and End Bits, Hydraulic Cylinder, Bucket pin&bush,Slewing Bearing, Long reach boom and arm, etc.

2.How to confirm the spare parts will fit our crawler excavator and dozer?
  Please send us your excavator and dozer model name, part number, Berco number, or technical drawings and dimensions

3.How about the construction machinery excavator and dozer undercarriage parts Quality Control?
  We have an excellent QC system, will inspect every production process,quality and specification, to be sure best quality and correct size, untill packages finished and loaded into container.

4.What is payment term?
 TT, L/C, Paypal, Western Union, other payment term also can be negotiated.

Choose genuine quality lower track roller for construction machinery parts, 

Fortunepart will be your best undercarriage parts supplier in China.