Replacement OEM Quality Undercarriage Bottom Roller Excavator Track Roller For Shantui SD22 SD32 SD42 SD52

Track roller, also known as bottom roller, manufactured with high-strength alloy steel. Perfect fit for excavator, bulldozer and crawler undercarriage parts. Wear-resistant, waterproof, heavy load and long service life.

Made of premium 40Mn2, 45# steel and ZG35CrMnSi cast steel, the roller body adopts medium frequency quenching treatment for high surface hardness and outstanding wear resistance. The shaft is made of 42CrMo alloy steel with quenched and tempered process, featuring anti-bending and anti-fatigue performance. Equipped with bimetallic alloy bushing and multi-lip NBR oil seal, our track roller realizes excellent waterproof, dustproof and mudproof performance, avoiding oil leakage and sand ingress.

We supply standard and OEM track rollers with strict quality control, stable performance, low maintenance cost and long working lifespan. One-stop solution for your undercarriage replacement and wholesale demand.

How to select a suitable track roller for your excavator/bulldozer/loader ?

Provide us the track roller part number or excavator model if you know it. If you don't know it, how to select a right track roller?

Tonnage matching:

1-3 ton micro excavator: need 4-6 pcs of track roller, single wheel weight ≤ 15kg;

5-8 ton small excavator: need 6-8 pcs of track roller, single wheel weight 20-35kg;

15-25 ton medium excavator: need 8-10 pcs of track roller, single wheel weight 40-70kg;

30 ton and above large excavator: 10-12 pcs of track roller, single wheel weight ≥ 80kg

Track pitch matching: The track pitch and tread width of the supporting wheels must be consistent with the track plate pitch and width - incorrect track pitch can easily cause derailment, narrow tread can easily fracture the track plate, and wide tread can increase frictional resistance

Chassis structure: Match the installation hole positions, axle diameters, and center distances of X-shaped and H-shaped chassis to avoid installation failure