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  • Bottom Rollers Sk40 Sf - China

    price: contact company for price

    Composition: Collar, Shaft, Copper Sleeve, Shell, Floating Seal

    Material: 23MnB, or 26MnB (carbon amount determines the degree of hardness)

    Process: the overall quenching

    Core hardness & Surface hardness: 42-52HRC

    1, Collar

    Material: Q7450-10

    Quenched and tempered:

    Ultra-audio (standard process) 2-4mm surface depth of hardness (medium frequency process 3-8mm)


    High-frequency processing (ultra-audio) shallow 0.5-1mm

    2, Shaft

    Material: 45 # or 42CrMo (standard)

    Process: surface quenching

    Surface hardness: 54-58 HRC

    3, Copper Layer

    Material: CuPb, copper and iron

    Copper layer thickness: about 0.35mm

    Inside and outside: 6-6

    4, Floating Seal

    Material: Powder Metallurgy (low cost, high oil leak filter)

    High chromium cast iron

    Surface hardness: 62-70HRC

    Rubber seal: Nitrile Rubber

    Surface hardness: 65-70 HRC

    Filling gear oil

    5, Shell

    Material: 50Mn

    Treatment: surface depth treatment medium frequency processing 3-8mm

    Welding and then machining

    Size & Heat Treatment

    Lines of the four screw holes (mounting dimensions)

    Center pitch

    Diameter (18, 20, 22 mm)

    The diameter of the rail surface

    Series 100: Φ140 (Φ130)

    Series 200: Φ160 (Φ150)

    Series 300: Φ180 (Φ170)

    Series 400: Φ200

    Surface heating temperature: 865 ° C (± 5 °)

    Water cooling

    Drilling in the round body

    Filling hole

    Pressure test: 0.5-0 .6 mPa. (First pressure test and fuel) testing for leaks in the water

    Program: installed - try (pressure) - and (oil) - to run, 80-90Pa gear oil

    Welding: Friction welding

    Port: Xiamen

    Minimum Order Quantity: 2 Piece/Pieces

    Supply Ability: 10000 Piece/Pieces per Month can improve

    Payment Terms: T/T

    Packaging Detail: wooden case/pallet

    Delivery Detail: 3-10 days after the payment

    Certificate: ISO9002

    Warranty time: 6 months

    Service: OEM and after-sale service

    Company Contact:

    • Phone: 8613960308920

    • Address: Quanzhou Licheng Xintang , Quanzhou , China

    • Email: Email

    Published date: March 8, 2013 -

    • Business Description: Quanzhou Licheng Xintang Automobile Parts Co., Ltd., XTP Parts was

      founded in 1984 we are leading manufacturer & exporter

      specialized in excavator undercarriage and bulldozer parts such as

      bottom rollers, top rollers, idler, sprocket, track link, track shoes,

      filter, bushing, pin, CAT engine parts, and models of Hitachi, Komatsu,

      Caterpillar, Kato, Kobelco, Sumitomo, Hyundai, Samsung, Daewoo, Yanmar,

      Kubota, Mitsubishi, Sany and more.

      XTP Parts suply to China Sany and Xiagong industry to operate in coordination in long term. We export to Russia, USA, Turkey, Australia, Singapore, India, Ghana, Fiji, Tanzania, Vietnam, Laos, Brazil, etc, .

      Under the guidance of a strong multidisciplinary management team, the company has established a fully equipped machinery shop with highly advanced computerized numeric control machines. It has specialized in tailor made casting and forging components as per the requirement of its buyers, matched to OEM standards.

      Having been in the industry for the past 30 years, we can offer expert technical advice and repairs for all your excavator & bulldozer undercarriage needs. Our vast experience and knowledge will provide our customers with the highest quality and most efficient service available.

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