Specifications: 

High quality long use Excavator track roller assembly 
Good quality 
Can produce to customers' request size 
Competitive price 

Products description: 

1. Wheel body:Forged by 40mn2 round steel whose hardenability is good, and use technology of hardening &tempering +heating treatment of medium frequency surface hardening, surface hardness HRC52-60,hardened case depth is 8-20mm, so they are strong and wear resistant. 

2.Bearing: Forgedby 50mn round steel, and use technology of hardening &tempering +heating treatment of medium frequency surface hardening, surface hardness HRC52-60,hardened case depth is 3-6mm, so it has excellent comprehensive performance. 

3. Floating seal: Forged by high chrome molybdenum alloy whose wear resistance is good, hardness HRC65-72, face roughness 0.1-0.2um. 

4.O-ring:Forged by chemigum which is made of butadiene and acrylonitrile, having betteroil reistanceand high-tempreture resistance. 

MODELS WE CAN SUPPLY FOR MINI-EXCAVATOR: 



KOMATSU PC20-6/7
PC40-5/6/7 PC60-5 PC60-6/7 
PC25R8,35R-8
PC45
PC60-SC7 
PC30-1/6
PC50UU
PC70-6/7 
PC28UC,38UU


PC75UU,US 




PC78US,78US-5 
CAT MM25,25T MM35 MM45 307 307C 
MM35T MM35B MM40CR 307SSR 308CCR 
MM30,30B MM40SR MM40T,45T 308B
MM30SR,40SR
MM57SR 308BCR
MM30CR
MM55CR 307BSR
HITACHI EX25,30,33 EX35-1/2 EX40,45
EX60-1/3 
EX30UR EX40UR EX55UR
EX60-5 

EX30MU EX58MU
EX75UR 

EX30U ZX55UR

KOBELCO SK025,030 SK032 SK045
SK60-2/3 
SK30UR SK035 SK40SR
SK60SV 
SK25SR,30SR
SK45SR
SK60SR