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    AI Overview
    crawler crane Kobelco7055 track bottom roller aftermarket ...
    The OK403 track roller assembly is a heavy-duty undercarriage component (approx. 32.3 kg/72.9 lbs) designed for excavators, often used as a single flange bottom roller. It supports the machine's weight and maintains track alignment. High-quality replacements feature hardened steel shells to prevent deformation and provide durable, sealed lubrication. 
    Key Features and Specifications: 
    • Part Number: OK403 (Berco OEM).
    • Weight: Approximately 32.3 kg to 72.93 lbs.
    • Compatibility: Known to fit certain Komatsu models, often cross-referenced as 207-30-07403.
    • Construction: Single-flange design, typically with a hardened surface (
      HCR52cap H cap C cap R 52
      𝐻𝐶𝑅52
      -
      HCR58cap H cap C cap R 58
      𝐻𝐶𝑅58
      ) for enhanced durability.
    • Function: Bottom/lower roller designed to reduce friction and support the chain.
    • Replacement: Often necessary when seals fail and cause, or when wear causes excessive play. 
    For specialized options, one can explore the Valuepart OK403 EXCAVATOR ROLLER from Tracks N Teeth or standard parts from Bestundercarriageparts. 
    Components and Maintenance: 
    • Seals & Lubrication: The assembly uses specialized seals and usually 85W140 gear oil to reduce friction.
    • Lifespan: Heat-treated and forged steel enhances wear resistance.
    • Replacement Info: When worn, the entire assembly is typically replaced rather than individual components. 
    For specific sourcing, Eamon Long & Co. offers Berco brand OK403 track rollers. 
    • Track Roller - OK403 Berco - Eamon Long & Co.
      Track Roller - OK403 Berco - Eamon Long & Co. Home / Undercarriage / Track Roller / Track Roller – OK403 Berco. Track Roller – OK4...
      Eamon Long & Co.
    • How to Replace a Track Roller on a Mini Excavator
      Oct 9, 2024 — and it's clearly coming from a track roller. so I need to replace. it. this is actually much easier to do than replacing the idler...
      3m
      YouTube·Achieving Self Reliance
    • Komatsu TRACK ROLLER ASSY GC (207-30-07403)
      Komatsu TRACK ROLLER ASSY GC (207-30-07403). Komatsu Spare Part: TRACK ROLLER ASSY GC Item Number 207-30-07403 (2073007403) Legacy...
      kuhn.at
    • Track Roller Single Flange
      Track Roller Single Flange. Material:50MN Hardness:HCR52-HCR58 Guarantee:3months. Send Inquiry. Product Introduction. Track Roller...
      www.bestundercarriageparts.com
    • Differences Between Excavator Track Rollers and Carrier Roller - gfm parts
      Feb 17, 2025 — What is a carrier roller? The carrier roller is mainly located in the middle of the excavator chassis, usually below or on the sid...
      gfm parts
    • TRACK ROLLER - HCE PARTS
      Oct 15, 2019 — Track Roller operates perfectly under all working conditions and have high rail wear resistance. Their superior quality is the res...
      www.hceparts.com
    • Valuepart OK403 EXCAVATOR ROLLER | Tracks N Teeth
      SKU: OK403. Weight: 72.93 LBS. Categories: Top Rollers, Bottom Rollers. Description: OK403 EXCAVATOR ROLLER. Compatible with. 09-0...
      www.tracksnteeth.com
    • Track Roller - OK403 Berco - Eamon Long & Co.
      Track Roller - OK403 Berco - Eamon Long & Co. Home / Undercarriage / Track Roller / Track Roller – OK403 Berco. Track Roller – OK4...
      Eamon Long & Co.
    • How to Replace a Track Roller on a Mini Excavator
      Oct 9, 2024 — and it's clearly coming from a track roller. so I need to replace. it. this is actually much easier to do than replacing the idler...
      3m
      YouTube·Achieving Self Reliance
    • Komatsu TRACK ROLLER ASSY GC (207-30-07403)
      Komatsu TRACK ROLLER ASSY GC (207-30-07403). Komatsu Spare Part: TRACK ROLLER ASSY GC Item Number 207-30-07403 (2073007403) Legacy...
      kuhn.at
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    Web results

    Valuepart OK403 EXCAVATOR ROLLER | Tracks N Teeth


    TracksNTeeth.com
    https://www.tracksnteeth.com › ok403-excavator-roller
    TracksNTeeth.com
    https://www.tracksnteeth.com › ok403-excavator-roller
    SKU: OK403 ; Weight: 72.93 LBS ; Applied makes: Fiat-Allis, New Holland ; Applied equipment types: Bulldozer, Excavator ; Manufacturers: American Crane & Tractor ...Read more
    Missing: assy ‎| Show results with: assy

    Custom OK403 Track Roller Assy,Wholesale OK403 Track Roller ...


    rhundercarriage.com
    https://www.rhundercarriage.com › ok403-track-roller-as...
    rhundercarriage.com
    https://www.rhundercarriage.com › ok403-track-roller-as...
    We support customizing the best OK403 track roller assy for wholesale. If you are interested in our OK403 track roller assy,please consult immediately!

    Track Roller - OK403 Berco


    Eamon Long & Co.
    https://eamonlong.com › Undercarriage › Track Roller
    Eamon Long & Co.
    https://eamonlong.com › Undercarriage › Track Roller
    Description. Track Roller – OK403 Weight 32.3KG OEM Part No. OK403 Make Berco. Additional information. Weight, 32.3 kg. OEM Part No. OK403. Make. Berco ...Read more
    OK403 track roller assy from eamonlong.com
    Missing: assy ‎| Show results with: assy

    OK403 construction undercarriage part track roller


    Quanzhou Red Hill Engineering and Machinery Co., Ltd.
    https://www.rhundercarriage.com › ok403-construction-...
    Quanzhou Red Hill Engineering and Machinery Co., Ltd.
    https://www.rhundercarriage.com › ok403-construction-...
    OK403 undercarriage part track roller. We can make three kind of track rollers. 1.Big roller body track roller, the measurement is the same as OEM.Read more
    OK403 track roller assy from www.rhundercarriage.com

    Track Roller Single Flange


    bestundercarriageparts.com
    https://www.bestundercarriageparts.com › track-roller-si...
    bestundercarriageparts.com
    https://www.bestundercarriageparts.com › track-roller-si...
    It is also used to keep track link to prevent it from lateral slippage. When the excavator steers, track roller force the track assy to skip on the ground.Read more

    Track Roller


    Linser Industrie Service GmbH
    https://www.linser.eu › Home › Undercarriage
    Linser Industrie Service GmbH
    https://www.linser.eu › Home › Undercarriage
    OK403. €152.20. €181.12. 1 Stück, 2 Stück, 3 Stück, 4 Stück, 5 Stück, 6 Stück ... Rubber tracks assembly guide · Rubber pads assembly instruction · Rubber pads ...Read more
    OK403 track roller assy from www.linser.eu

    Komatsu TRACK ROLLER ASSY GC (207-30-07403)


    kuhn.at
    https://shop.kuhn.at › Home › Roller
    kuhn.at
    https://shop.kuhn.at › Home › Roller
    Komatsu TRACK ROLLER ASSY GC (207-30-07403) · Description · Additional information. Weight, 47,33 kg. Placeholder Komatsu PIN (203-32-51151) ...Read more
    OK403 track roller assy from shop.kuhn.at
    Missing: OK403 ‎| Show results with: OK403

    OK403 excavator bottom roller


    Quanzhou Red Hill Engineering and Machinery Co., Ltd.
    https://www.rhundercarriage.com › ok403-excavator-bot...
    Quanzhou Red Hill Engineering and Machinery Co., Ltd.
    https://www.rhundercarriage.com › ok403-excavator-bot...
    We support customizing the best OK403 excavator bottom roller for wholesale. If you are interested in our OK403 excavator bottom roller,please consult ...
    OK403 track roller assy from www.rhundercarriage.com

    TRACK ROLLER - HCE PARTS


    hceparts.com
    https://www.hceparts.com › blog › track-roller
    hceparts.com
    https://www.hceparts.com › blog › track-roller
    Oct 15, 2019 — Track Roller operates perfectly under all working conditions and have high rail wear resistance. Their superior quality is the result of a decade of experience ...Read more
    People also ask
    What are the two types of track rollers?
    There are two main types of track rollers commonly used in excavators, bulldozers, and other tracked machinery: Single Flange Rollers and Double Flange Rollers.May 12, 2025

    What are the two types of track rollers? - XMGT


    XMGT
    https://www.xmgt.net › what-are-the-two-types-of-track-...
    XMGT
    https://www.xmgt.net › what-are-the-two-types-of-track-...
    What do you call the rollers in tracked equipment?
    Carrier rollers and track rollers are both important components of a crawler excavator, bulldozer, or any tracked machinery.Mar 3, 2023

    Carrier Roller vs Track Roller - Juli Machinery


    Juli Machinery
    https://www.julimachinery.com › carrier-roller-vs-track-r...
    Juli Machinery
    https://www.julimachinery.com › carrier-roller-vs-track-r...
    What are the two types of track roller design?
    Track rollers are commonly divided into support rollers (yoke-type track rollers) and cam followers (stud-type track rollers). Support rollers are ready-to-fit cylindrical or needle roller bearings that can be mounted on all types of tracks.

    Track rollers - RKB Bearing Industries


    RKB Bearing Industries
    https://www.rkbbearings.com › additional-products › tra...
    RKB Bearing Industries
    https://www.rkbbearings.com › additional-products › tra...
    What do the bottom track rollers mount to?
    Also called track rollers or lower rollers, bottom rollers have a similar design to top rollers. They are cylindrical-shaped, steel components that feature bearings. Unlike top rollers, which are mounted to the top of the undercarriage, bottom rollers are mounted to the bottom of the undercarriage.Nov 27, 2023

    How Undercarriage Rollers Dictate the Performance of Your Equipment


    EquipmentShare Parts Store
    https://shop.equipmentshare.com › blogs › parts-in-depth
    EquipmentShare Parts Store
    https://shop.equipmentshare.com › blogs › parts-in-depth

    Web results

    Untitled


    numeralkod.com
    https://www.numeralkod.com › cross › berco
    numeralkod.com
    https://www.numeralkod.com › cross › berco
    ... ASSY W.SPLIT M.LINKS, 12,323.84, 73132013, FD40 ... TRACK ROLLER COMPLETE, 308.93, 71483187, CARRO10, 53.00. LH697, ROLLER SHELL, 163.26, 71400942, CARRO10, 30.70.Read more
    People also search for
    Ok403 track roller assy replacement
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