Cylinder Group 354-6071/364-2422/363-9317/590-8058

Excavator Caterpillar 390F L

Bucket Cylinder Bore 200,00 Stroke 1.451,00 Hydraulic Cylinder

3546071/3642422/3639317/5908058

880 kg

Compatible Brand: Caterpillar

Part Number: 590-8058 (5908058)

Superseded / Interchange Numbers: 354-6071 (3546071), 364-2422 (3642422), 363-9317 (3639317)

Part Name: Heavy Mining Excavator Bucket Hydraulic Cylinder Group / Assembly

Technical Specifications: Bore: 200.00 mm / Stroke: 1,451.00 mm / Weight: ~880 kg / Hydraulic Cylinder

Compatible Machinery: Caterpillar Heavy Mining Hydraulic Excavators (390F L series)

What It Does:

Serves as the primary bucket hydraulic cylinder actuator operating on the stick and heavy-duty bucket linkage assembly of Caterpillar 390F L series mining excavators. Powered by high-pressure hydraulic fluid, it extends and retracts to control bucket curl (closing) and dump (opening) kinematics, providing the immense force required to penetrate blasted rock, break out dense material, retain payloads, and discharge into mining haul trucks.

Importance:

Critical for defining bucket breakout force, rapid cycle times, and overall digging productivity in demanding open-pit mining, quarrying, and heavy overburden removal. Built with a massive 880 kg heavy-walled barrel and high-strength forged rod structure, it effectively absorbs extreme dynamic shock loads, rock face impacts, and severe torsional stresses transmitted through the bucket linkage, while advanced heavy-duty seals prevent fluid bypass under continuous high-pressure operation.

As Seçkin Makine, we manufacture this product as an aftermarket item fully equivalent to the original specifications in terms of raw materials, technical dimensions, and performance characteristics. This product comes with a 1-year warranty from the invoice date.