CAT 077-6994 SEAT

CAT 077-6994 is a Caterpillar genuine mechanical suspension operator seat (pure original factory information, no additional description), adapted for the cab of construction machinery equipment to provide operators with shock absorption support and a comfortable driving experience.

Core Parameters and Information

Project Details
Part Model: CAT 077-6994 (0776994) Seat (Mechanical Suspension Operator Seat)
Structure Type: Mechanical spring suspension base, high backrest with lateral support, integrated mechanical lumbar support, adjustable fore-aft, height, and backrest angle, with retractable three-point safety belt

Material: Seat cushion/backrest material: Abrasion-resistant black fabric (polyester fiber), tear-resistant and oil-resistant; Frame: Carbon steel stamping, surface electrophoretic anti-corrosion coating; Suspension mechanism: High-strength spring + shock absorber, with damping adjustment

Key Dimensions: Seat width 520 mm, seat depth 480 mm, backrest height 680 mm, total height 1100 mm, fore-aft adjustment travel 200 mm, height adjustment range 120 mm, backrest angle adjustment range 90°-115°, suspension travel 50 mm

Performance Parameters: Rated load ≤150 kg, mechanical suspension shock absorption efficiency ≥65%, seat belt tensile strength ≥22 kN, fabric abrasion resistance ≥50,000 cycles, corrosion resistance IP54, applicable temperature -20℃ to +60℃

Compatibility Standards: Complies with CAT seat specifications, ROPS/FOPS certified, seat belt conforms to SAE J386 standard, shock absorption performance meets ISO 7096 requirements

Matching Components: Includes seat assembly, mounting base, seat belt assembly, adjustment handle, and CAT cab seat mounting holes.

Compatible Models and Application Scenarios:

Compatible Equipment: Cabs for CAT 320/336 series excavators, 966/988 series loaders, D6/D8 series bulldozers, and other small to large construction machinery.

Application Scenarios: Heavy-duty, high-vibration conditions such as mining, infrastructure, and road construction, providing stable support and a comfortable driving environment for operators working for extended periods, reducing fatigue.

Installation: Directly installed onto the cab seat rails and secured with bolts, requiring no additional modifications. Compatible with standard CAT cab interfaces.

Installation and Maintenance Points:

Before installation, clean the seat rails and mounting surface. Inspect the seat for deformation and damage, and check the seat belts for aging and cracks.

Align the seat with the rail positioning holes and tighten with M10 bolts to a torque of 35-40 N·m, ensuring a secure and tight fit.

Adjust the seat’s fore-and-aft position, height, and backrest angle so that the operator can easily operate the control levers in a natural sitting posture, and the lumbar support conforms to the lumbar curve.

Maintenance: Check the suspension spring elasticity and shock absorber damping every 500 hours; replace immediately if any are faulty. Use a neutral detergent to clean the fabric; avoid using corrosive solvents. Inspect the seat belts every 2000 hours; replace immediately if aged or damaged.