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Komatsu-parts-561-22-72961 Bearing | HD785-7 Mining Dump Truck | Rear Axle Final Drive Rotating Support

Komatsu-parts-561-22-72961 Bearing | HD785-7 Mining Dump Truck | Rear Axle Final Drive Rotating Support

⚙️ Parts for Komatsu® Equipment

🌏 Worldwide Supplier

🔧 Genuine & OEM Parts Available

For product inquiries, please contact our dedicated account manager.

WhatsApp: +86 156 6041 5828

Komatsu-parts-561-22-72961 Bearing | HD785-7 Mining Dump Truck | Rear Axle Final Drive Rotating Support

⚙️ Parts for Komatsu® Equipment

🌏 Worldwide Supplier

🔧 Genuine & OEM Parts Available

For product inquiries, please contact our dedicated account manager.

WhatsApp: +86 156 6041 5828

Komatsu-parts-561-22-72961 Bearing | HD785-7 Mining Dump Truck | Rear Axle Final Drive Rotating Support

1.Product Overview

561-22-72961 is a heavy-load roller bearing exclusively matched for Komatsu HD785-7 rigid mining dump trucks, serving as the core rotating support component inside rear axle final drive assembly. This bearing endures long-term continuous heavy compression, frequent impact load and high-speed rotational friction during full-load ore transportation, quarry haulage and mountain construction material delivery. We supply two complete product lines for this part: genuine original Komatsu bearings imported directly from Japan factory, and interchangeable aftermarket OEM bearings manufactured strictly per original Komatsu drawing standards. At present, part number 561-22-72961 is fully stocked in our overseas transit warehouse and domestic storage center, all confirmed orders with deposit settled can be packed and shipped within 3 to 7 working days without extra waiting period.

We maintain full stock of matched undercarriage, axle and engine spare parts for Komatsu heavy mining machines, including high-traffic Google hot search part numbers: 17M-30-57131,702-16-02341,6212-41-4540,721-32-10631,6210-32-3440,600-813-9341,6151-21-4150,6711-21-3170,6211-31-2050,6211-32-2130. These serial parts cover track frame guides, control levers, engine gasket kits and axle bearings for D275A bulldozers and HD785 series haul trucks, perfectly supporting one-stop spare parts procurement for global mining fleet operators. Many bulk buyers combine 561-22-72961 with 6212-41-4540 engine seals during regular equipment overhaul, effectively cutting down repeated shipping cost and machine downtime. The OEM version of 561-22-72961 we provide adopts identical inner diameter, outer diameter and thickness as genuine bearings, which allows direct replacement without any mechanical modification on HD785-7 rear axle housing.

2.Applicable Equipment Models

This bearing 561-22-72961 fits all serial number batches of Komatsu HD785-7 dump truck series recorded in official Komatsu spare parts catalog:

HD785-7 S/N 7001-8172
HD785-7 S/N A10001-UP
HD785-7 S/N J330001-UP
HD785-7 S/N Y700001-UP
HD785-7 S/N 8832-UP (KAL Spec.)

Each serial number segment corresponds to different rear axle configurations, including standard rear axle, rear axle with auto-greasing system, rear axle equipped with ASR auto spin regulator, and rear axle without ABS anti-skid brake system. No matter which production batch your HD785-7 haul truck belongs to, 561-22-72961 can perfectly match left-hand and right-hand final drive half assemblies of rear axle.

3.Exact Installation Position

561-22-72961 is installed inside the rear axle final drive housing of Komatsu HD785-7 mining dump truck, sandwiched between axle carrier housing and planetary gear set of final drive unit. One piece bearing is assembled on left final drive half body, another piece is mounted on right final drive half body, supporting high-speed rotation of output shaft and bearing all vertical load transferred from rear tire during driving. During disassembly and maintenance, technicians only need to remove rear wheel hub, take down final drive cover plate, then take out old bearing for replacement; the reserved operation space around installation position greatly shortens overhaul time on construction site, avoiding complicated whole axle disassembly operation. This bearing closely contacts rear axle oil seal and drive gear, acting as isolation buffer to reduce direct metal friction between gear and axle housing.

4.Material & Production Craft

For genuine Komatsu 561-22-72961 bearing: Raw material is high chromium alloy bearing steel imported from Japan Nippon Steel. The whole production flow includes precision forging, CNC internal & external circle grinding, heat quenching and tempering, surface anti-corrosion phosphating treatment and clean room assembly. Its stable working temperature range covers -30℃ to +120℃, adapting to ultra-low temperature winter mining in Russia and high-temperature continuous operation in Middle East desert mines.

For OEM aftermarket 561-22-72961 bearing: We select domestic top-grade GCr15 bearing steel with same carbon content as original steel blank. The production process retains full quenching layer of inner and outer ring, adds secondary surface hardening procedure to improve anti-impact performance. All dimensional tolerance strictly follows Komatsu original blueprint, and finished products pass roundness, hardness and load-bearing pressure inspection before warehousing. This OEM bearing also maintains working temperature adaptability from -30℃ to +120℃, meeting harsh operation demands of Russia, Middle East, Africa and Southeast Asia construction projects.

5.Performance Advantages

Excellent anti-leakage matching performance: The precise grinding surface of inner and outer ring forms tight fit with rear axle oil seal, effectively preventing gear lubricating oil leakage from final drive assembly. It solves common site failure that low-quality bearings cause oil seal deformation and continuous gear oil loss, which further leads to gear abrasion and axle damage.
Stable rotational sensitivity under heavy load: Even under full 90-ton load of HD785-7 dump truck, the roller structure inside 561-22-72961 keeps smooth rotation without jamming or extra vibration, reducing power loss of transmission system and lowering fuel consumption of mining truck.
Outstanding wear resistance to extend service life: The thick hardened layer of bearing surface resists abrasive dust invasion from mine mud and gravel. Compared with generic low-cost bearings on market, our genuine and OEM 561-22-72961 can extend average service cycle by over 45%, cutting frequent replacement frequency and maintenance cost for mining enterprises.

6.Suitable Working Condition

Open-pit mining site: Heavy ore transportation, long-distance uphill and downhill haulage with full load, facing large impact load and rock dust erosion.
Quarry construction site: Gravel and stone material delivery, uneven rugged road surface bringing continuous vibration pressure to rear axle assembly.
Infrastructure engineering project: Large-scale highway, hydropower station and port earthmoving works, long-hour non-stop equipment operation.
River dredging and reclamation project: Muddy, humid working environment with high humidity and silt corrosion risk to axle spare parts.

This bearing adapts multi-regional extreme climate conditions: frigid minus 30 degrees environment of Russian Siberian mines, high-temperature desert working scene of Saudi Arabia and UAE in Middle East, dusty tropical open mines of Africa Ghana and Zambia, muddy rainy construction zones of Indonesia and Philippines in Southeast Asia.

7.Source & Quality Assurance

Our genuine 561-22-72961 bearings are directly purchased from official Komatsu Japan factory authorized channel, complete with original factory packaging and production batch inspection certificate, 100% original matching without counterfeit refurbished parts. All OEM bearings are produced in our self-owned professional heavy machinery bearing factory, each batch carries independent quality inspection report covering hardness, pressure resistance and dimensional accuracy test items.

We maintain sufficient stock of 561-22-72961 and matched HD785-7 spare parts in our warehouse, supporting global shipping by sea, air and land transport. Our logistics network covers Middle East, Russia, Southeast Asia, Africa and South America major industrial countries, with professional freight forwarder cooperation to provide door-to-door delivery service for bulk order clients. All products enjoy after-sales quality guarantee, defective parts caused by production craft can be replaced free of charge within warranty period after providing working condition photos.

If you need matched rear axle oil seal accessory for HD785-7 haul truck, check our detail page: Komatsu-parts-6211-32-2130

If you search complete final drive gear set for HD785-7 mining dump truck, visit our supporting chassis component page: Komatsu-parts-17M-30-57131

You can check our production video on our official Youtube channel.

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Komatsu-parts-561-22-72961 Bearing | HD785-7 Mining Dump Truck | Rear Axle Final Drive Rotating Support

Komatsu-parts-561-22-72961 Bearing | HD785-7 Mining Dump Truck | Rear Axle Final Drive Rotating Support

Komatsu-parts-561-22-72961 Bearing | HD785-7 Mining Dump Truck | Rear Axle Final Drive Rotating Support

Komatsu-parts-561-22-72961 Bearing | HD785-7 Mining Dump Truck | Rear Axle Final Drive Rotating Support

1.Product Overview

2.Applicable Equipment Models

3.Exact Installation Position

4.Material & Production Craft

5.Performance Advantages

6.Suitable Working Condition

7.Source & Quality Assurance

Описание

маркер

Komatsu-parts-561-22-72961 Bearing | HD785-7 Mining Dump Truck | Rear Axle Final Drive Rotating Support

связаться с нами

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