Caterpillar 777D Differential

Description

OEM-Quality Caterpillar 777D Differential Assembly

Ensure smooth, balanced rear-wheel power distribution and maximum driveline durability on your 100-ton mining haulers with a heavy-duty Caterpillar 777D Differential Assembly. Engineered specifically for Caterpillar’s 777D (91-tonne nominal payload) off-highway mining trucks, this center axle differential carrier receives output torque from the main driveshaft and transfers rotational force across the rear axle shafts into the planetary final drives.

Featuring high-grade alloy spiral bevel gears, this unit withstands continuous dynamic torque spikes, sharp cornering differential speeds, and high-impact mining haul route gradients.

Key Features & Benefits

• Precision Spiral Bevel Gear Set: Crown wheel and pinion gears are precision-matched and heat-treated to ensure quiet operation, high tooth contact area, and minimal backlash under severe torque loads.

• High-Strength Cast Iron/Steel Carrier: Rigid housing resists structural deflection under heavy payload acceleration, keeping internal shaft bearings and gears in precise mesh alignment.

• Forced-Oil & Splash Lubrication Passages: Engineered internal oil channels provide continuous lubrication and heat dissipation across pinion bearings and spider gear cross-shafts.

• Tapered Roller Bearing Pre-Load Setup: Oversized inner and outer pinion bearings absorb heavy axial thrust loads generated by the driveshaft and bevel gear engagement.

• Direct OEM Rear Axle Bolt-On: Precision-machined flange face aligns directly with standard Caterpillar 777D rear axle housing cradles for fast, turn-key swap-outs during major overhauls.

Verified Technical Specifications