| Parameter | Specification |
|---|---|
| COGENG Part Number | 141-63-05050 |
| OEM Reference | Komatsu 141-63-05050 |
| Roller Type | Track roller / Track carrier roller |
| Roller Diameter | 150mm (5.91 inches) |
| Overall Width | 110mm (4.33 inches) |
| Shaft Diameter | 45mm (1.77 inches) |
| Bearing Type | Tapered roller bearings (2 pcs) |
| Seal Type | Floating ring seals (metal face) |
| Material | High-carbon steel (through-hardened) |
| Surface Hardness | 52-58 HRC |
| Case Depth | 8-12mm (hardened layer) |
| Core Hardness | 28-35 HRC |
| Lubrication | Oil bath (EP90 gear oil, 80-120ml) |
| Weight | 12.8 kg ±5% (28.2 lbs) |
| Load Capacity | Up to 8,500 kg per roller |
| Service Life | 3,000-5,000 hours (typical) |
| Component | COGENG Specification | Material | Special Features |
|---|---|---|---|
| Roller Body | Precision forged/cast | High-carbon steel | Through-hardened, wear-resistant |
| Shaft / Axle | Induction hardened | Alloy steel | Precision ground surface |
| Tapered Bearings | Premium grade (Class 3) | Chrome steel (52100) | Factory pre-set clearance |
| Floating Ring Seals | Metal face design | Cast iron + steel | Self-lubricating |
| Mounting Bolts | M12 x 1.75 (4 pcs) | Grade 10.9 steel | Corrosion-resistant coating |
| O-Ring Set | NBR/FKM composite | Rubber compound | Temp: -40°C to +120°C |
| Grease Fitting | Standard 1/8" NPT | Steel | Replaceable design |
| Model | Series | Application Position | Compatibility |
|---|---|---|---|
| PC120-3 | Complete series | Track roller | Full compatibility |
| PC120-5 | Complete series | Track roller | Full compatibility |
| PC120-6 | Complete series | Track roller | Full compatibility |
| PC130-5 | Complete series | Track roller | Full compatibility |
| PC130-6 | Complete series | Track roller | Full compatibility |
| PC130-7 | Complete series | Track roller | Full compatibility |
| PC150-5 | Complete series | Track roller | Verified fitment |
| PC150-6 | Complete series | Track roller | Verified fitment |
| PC120-1 | Early models | Track roller | Cross-reference verified |
| PC120-2 | Mid-production | Track roller | Cross-reference verified |
| Parameter | Specification |
|---|---|
| COGENG Part Number | 141-63-05050 |
| OEM Reference | Komatsu 141-63-05050 |
| Application | Blade lift/tilt cylinder seal kit (D31/D37/D39 series dozers) |
| Maximum Operating Pressure | 32 MPa (4,641 PSI) |
| Temperature Range | -40°C to +120°C (-40°F to +248°F) |
| Primary Seal Material | HNBR / Polyurethane (PU) |
| Dynamic Seal Hardness | 88 ± 3 Shore A |
| Static Seal Hardness | 75 ± 5 Shore A (FKM O-rings) |
| Fluid Compatibility | AW32, AW46, AW68 hydraulic oils, synthetic fluids |
| Compression Set | ≤ 12% (70 hours @ 110°C) |
| Pressure Cycle Rating | 300,000 cycles at 25 MPa |
| Service Life | 3,500-5,000 hours in typical dozer service |
| Component | COGENG Part Number | Material | Hardness | Quantity |
|---|---|---|---|---|
| Piston Seal | CG-PS-05050-01 | HNBR w/ reinforcement | 88 ± 3 Shore A | 2 |
| Rod Seal (Primary) | CG-RS-05050-01 | Polyurethane (PU) | 90 ± 3 Shore A | 2 |
| Rod Seal (Secondary) | CG-RS-05050-02 | FKM/HNBR composite | 85 ± 3 Shore A | 1 |
| Heavy-Duty Wiper | CG-HDW-05050-01 | Dual-density PU | 94/82 Shore A | 1 |
| Wear Band Set | CG-WBS-05050-01 | Bronze-PTFE composite | 60 ± 5 Shore D | 4 |
| Backup Rings | CG-BKR-05050-01 | Glass-filled PTFE | N/A | 6 |
| Static O-Rings | CG-OR-05050-01 | FKM (Grade 75) | 75 ± 5 Shore A | 10 |
| Gland Seal Kit | CG-GSK-05050-01 | HNBR composite | 85 ± 3 Shore A | 1 |
| Model | Series | Cylinder Application | Compatibility |
|---|---|---|---|
| D31EX-21 | Complete series | Blade lift/tilt cylinders | Full compatibility |
| D31PX-21 | Complete series | Blade lift/tilt cylinders | Full compatibility |
| D31P-21 | Complete series | Blade lift/tilt cylinders | Full compatibility |
| D37EX-21 | Complete series | Blade lift/tilt cylinders | Full compatibility |
| D37PX-21 | Complete series | Blade lift/tilt cylinders | Full compatibility |
| D39EX-21 | Complete series | Blade lift/tilt cylinders | Full compatibility |
| D39PX-21 | Complete series | Blade lift/tilt cylinders | Full compatibility |
| D31E-21 | Complete series | Blade lift/tilt cylinders | Verified fitment |
| D31Q-21 | Complete series | Blade lift/tilt cylinders | Verified fitment |
⚠️ TRACK ROLLER SPECIFIC:
ALWAYS relieve track tension before removing any undercarriage components
MANDATORY: Fill roller with EP90 gear oil before installation
REQUIRED: Use thread locker on all mounting bolts
CHECK: Rotate roller after installation to verify smooth operation
⚠️ SEAL KIT SPECIFIC:
ALWAYS depressurize hydraulic system before service
NEVER reuse old seals or damaged components
ALWAYS use proper installation tools
VERIFY all clearances before final assembly
