3349463 XCMG GR2605 motor grader sprocket

Technical Parameters

• Model: 3349463
• Type: Single-row roller chain sprocket (Standard three-arc & straight tooth profile, GB/T 1243)
• Material: 45# Carbon Steel / 40Cr Alloy Steel (Forged)
• Surface Treatment: Induction Hardened & Tempered, Tooth Hardness HRC 52–58, Core HRC 28–32
• Matching Chain Pitch: 19.05 mm (3/4″, 12A / 60 series)
• Number of Teeth: 19 Teeth
• Pitch Diameter:≈ 115.74 mm
• Outside Diameter (OD):≈ 124.45 mm
• Bore Diameter: 45 mm (with 14×3.8 mm keyway)
• Hub Diameter: 75 mm
• Total Thickness: 42 mm
• Tooth Width: 28 mm (fits 12A chain)
• Mounting: Keyway + 2×M8 set screws
• Max Speed: ≤ 300 r/min (Low-speed, heavy-duty)
• Operating Temp: -30℃～+120℃
• Features: High load capacity, wear-resistant, shockproof, anti-jump, long service life

Application Scenarios

• Undercarriage: Final drive output shaft, travel motor hub
• Transmission: Gearbox, transfer case, tensioner assembly
• Working Equipment: Swing drive, dozer lift, track adjuster

  Ideal for mining, construction, muddy, heavy-duty continuous operation.

Common Faults & Troubleshooting

• Tooth Wear, Pitting, Chipping: Heavy load, elongated chain, poor lubrication → noise, jumping, drifting. Replace 3349463 sprocket & chain; lubricate with EP lithium grease.
• Root Cracks / Fracture: Shock overload, material defect, misalignment → sudden seizure. Install genuine sprocket; align shafts; reduce shock loads.
• Bore/Keyway Wear, Looseness: Poor fit, damaged keyway, loose set screws → slipping, power loss. Repair shaft/keyway or replace sprocket; retighten set screws.
• Chain Derailment / Jamming: Sprocket wobble, deformed teeth, pitch mismatch, debris. Align sprocket; clean debris; replace worn sprocket/chain.
• Noise / Vibration: Worn teeth, poor meshing, bearing failure, loose mounts. Inspect sprocket, chain, bearings, and fasteners; replace worn parts.