380906174 XCMG GR2605 motor grader connector

380906174 XCMG GR2605 motor grader connector

380906174 is an original high-strength flange-type connecting plate for the transmission/travel system of XCMG GR series graders (such as GR215, GR2605, GR3005). It is used for rigid shaft-to-shaft and shaft-to-flange connections, transmitting heavy-duty torque, resisting impact and torsional fatigue. The original hole positions/stops/keyways are precise, allowing for direct assembly without the need for hole modification.

Core Definitions and Structure

Connecting Disc (Connecting Disc/Flange): A core component of engineering machinery transmission, mostly integrally forged and heat-treated, unlike flexible couplings, it primarily provides rigid transmission and is commonly used in the front axle, gearbox output, and drive axle input.

Original Factory Structure: Made of medium carbon alloy structural steel (such as 42CrMo), integrally forged, heat-treated, precision machined and bored, with locating stops, bolt holes, and keyways (designed according to the vehicle’s transmission), and a rust-proof coating (powder coating/blackening/galvanizing).

Rigid Connection: Without cushioning rubber parts, suitable for heavy-duty, low-impact flat-ground operations; strictly prohibited for applications requiring high-frequency cushioning to avoid torsional cracking.

Key Technical Parameters (Original Equipment Manufacturer Standard)

Part Number: 380906174
Type: Rigid Flange Connector (Transmission Use, Non-Flexible Coupling)
Compatible Models: XCMG GR215 and other main graders, and GR2605 and GR3005 graders on the same platform
Material: 42CrMo medium carbon alloy structural steel (standard material for heavy-duty engineering)
Process: Forging → Quenching and tempering heat treatment (HRC 28-32, balancing strength and toughness) → Precision machining → Precision boring → Non-destructive testing (magnetic particle/ultrasonic) → Rust-proof coating
Installation: Original bolt specifications, torque, anti-loosening measures (such as anti-loosening washers/thread binder), stop positioning, keyway fit, over-torque tightening is strictly prohibited
Core Function: Transmits power from gearbox/transfer case to drive axle/ Front axle torque ensures coaxiality of the transmission system.

Applicable Scenarios and Core Advantages

Applicable Working Conditions: Mining, infrastructure, sand and gravel pits, and unpaved flat ground operations; long-term heavy loads and stable torque output.

Core Advantages: Forged and heat-treated carcass for high strength, resistance to torsion and impact; original factory precision control ensures minimal coaxiality error, preventing transmission vibration and uneven wear; rust-proof coating adapts to humid and dusty construction environments.

Not Applicable: High-frequency start-stop, severe vibration extreme conditions (recommended for use with flexible couplings); long-term high-speed operation (oil temperature rises, affecting bolt loosening prevention).

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1 800361901 Tire (L3/TT)
2 800361874 Rim (with inner tube)
3 380901054 Rim nut
4 380906174 Connecting disc
5 380902714 Front rim bolt
6 803400210 Lip seal
7 800554952 Tapered roller bearing
8 800554251 Bearing
9 380900935 Adjusting shim
10 380906173 End cap
11 805338263 Washer 16
12 805139895 Screw M16×40

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