Description
CAT 166-9050 SEAT
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The CAT 166-9050 is a Caterpillar original mechanical suspension high-back operator seat assembly, suitable for the cabs of small and medium-sized excavators, loaders, and other equipment. The following are raw specifications and do not include information on replacement parts (Cat® Parts).
Core Technical Parameters (Raw Data)
Item Details
Basic Attributes
Model: 166-9050; Type: Mechanical Suspension High-Back Seat; Material: Seat cushion/backrest is high-density cold-foamed polyurethane; Fabric: Wear-resistant nylon canvas (gray and black, with Cat logo); Frame: Q235 carbon steel; Weight: 12.8 kg; Suitable for engineering work environments with frequent vibration and impact; Operating temperature: -30℃ to +80℃; Protection rating: IP43; Compatible voltage: 12/24V (optional heating function)
Key Dimensions (Metric):
Total height: 1080 mm (tolerance ±10 mm); Seat width: 500 mm (tolerance ±5 mm); Seat depth: 480 mm (tolerance ±5 mm); Backrest height: 650 mm (tolerance ±8 mm); Forward/backward adjustment travel: 200 mm (tolerance ±3 mm); Vertical suspension travel: 80 mm (tolerance ±2 mm); Mounting hole spacing: 450×300 mm (tolerance ±2 mm) Seat cushion thickness 60 mm (tolerance ±3 mm), backrest thickness 50 mm (tolerance ±3 mm)
Performance Parameters: Load capacity range 60-120 kg, suspension system spring stiffness 18-22 N/mm, damping coefficient 0.35-0.45, fore-and-aft adjustment force ≤50 N, backrest adjustment angle 90° – 115° (tolerance ±2°), armrest folding angle 0° – 90°, heating power 20 W (optional), safety belt specification 2-inch telescopic type, tensile strength ≥25 kN
Structural and Performance Advantages: Mechanical suspension system: Dual spring + damping shock absorption structure, effectively filtering high-frequency vibrations during equipment operation, vertical suspension travel 80 mm, suitable for operators of different weights (60-120 kg), improving comfort during long-term operation.
Durable and Abrasion-Resistant Design: The nylon canvas fabric is tear-resistant and oil-resistant; the high-density polyurethane foam seat/backrest cushions offer excellent resilience and are not prone to sagging even after prolonged use; the carbon steel frame undergoes electrophoretic anti-corrosion treatment, making it suitable for harsh working conditions.
Multi-Dimensional Adjustment: 200 mm fore-aft adjustment, 90° – 115° adjustable backrest angle, and foldable armrests cater to different operator habits and enhance operational convenience.
Safety Features: Standard 2-inch telescopic seatbelt with a tensile strength ≥25 kN, meeting CAT original safety standards to ensure operator safety.
Installation and Maintenance Points (Original Data)
Installation: Clean the cab mounting surface. Secure the seat to the mounting holes using M12×40 bolts (torque 45-50 N・m). Check that the fore-aft adjustment and suspension functions are normal. After installation, the seat level should be ≤1°, with no looseness or abnormal noise.
Maintenance: Inspect the suspension spring, damper, and adjustment mechanism every 500 hours. If spring deformation, damping failure, or adjustment sticking is found, replace the parts promptly. Use a neutral detergent to clean the fabric, avoiding scratches from sharp objects. For the heating function (if present), check the insulation of the wiring every 1000 hours to ensure there is no damage.
Troubleshooting: Common faults include suspension failure and difficulty in adjustment, often caused by spring fatigue, damping oil leakage, or wear of the adjustment mechanism. Replace the corresponding parts and check the tightness of the installation.
