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4x Bottom Roller
Fitment Guide:
For KX057-4, KX161-3, KX161-3S, KX161-3ST, U45S, U45ST, U55 and U55-4
It does not fit KX057-5 or KX161-2
Specifications:
Package Dimensions: 5.51"X5.51"X8.26"Color: Black
Material: 50 MnB Steel
Surface Hardness: HRC52-58, Deepth:5mm-8mm
Locking pin, 65Mn or 45 carbon steel, hardened HRC25-28.
Bolt, grade 12.9, HRC45-52. 6.
Seal: Nitrile rubber. Operating temperature range -20℃ to 110℃.
Finish:Smooth
Technique: Forging and Casting
Note: Please confirm the item if it matches your need before you purchase.
Description:
This bottom roller is a durable undercarriage replacement part for your excavator. Our rollers utilize special high strength-hardened steel and quality seal groups that provide excellent lubricating oil retention. Sealed bearings stop dirt, mud, and grime from penetrating inner components.Made of durable material which is totally corrosion and dust resistant, each item has been factory tested and meets or exceeds OEM specifications.
It was designed and manufactured to exact OEM specifications using a high-quality, high-strength steel. It will provide long-lasting and dependable performance even if you operate in the most extreme conditions.
PLS NOTE:
Please make sure it will fit your machine before purchasing.
If product is defective or damage upon arrival, or wrong product shipped, please contact us immediately.
Returns are accepted within 30 days.
All items must be brand new, unused, in original packaging without any signs of use or install for a return/refund to be given.
Customer is responsible for return shipping cost when you buy wrong product or you just don't need it.
Seller is responsible for return shipping cost when we ship wrong product or the product could not work.
Please contact us firstly if you want to return. So we could help you solve the problem well.



About us:
We have been manufacturing automotive cooling components for over 20 years. We offer a wide range of all aluminum cooling solutions for trucks, classics, motorcyles, forklifts, powersports and more. We pride ourselves with quality products and excellent customer service. All products are TIG welded using aircraft grade aluminum, and tested rigorously before manufacturing. We trust our products. That is why we have the best warranty available on eBay at this price point.