Cylinder Group 155-9071/204-4918/259-0871/353-9625/365-3312/315-3375/363-1685/524-7190/570-1981

Excavator Caterpillar 390F L

Stick Cylinder Bore 220,00 Stroke 2.262,00 Hydraulic Cylinder

1559071/2044918/2590871/3539625/3653312/3153375/3631685/5247190/5701981

1076 kg

Compatible Brand: Caterpillar

Part Number: 570-1981 (5701981)

Superseded / Interchange Numbers: 155-9071 (1559071), 204-4918 (2044918), 259-0871 (2590871), 315-3375 (3153375), 353-9625 (3539625), 363-1685 (3631685), 365-3312 (3653312), 524-7190 (5247190)

Part Name: Excavator Stick / Arm Hydraulic Cylinder Group

Technical Specifications: Bore: 220.00 mm / Stroke: 2,262.00 mm / Weight: ~1076 kg / Hydraulic Cylinder

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

What It Does:

Serves as the stick (arm) hydraulic actuator mounted between the main boom and bucket linkage on Caterpillar 390F L large mining hydraulic excavators. Powered by high-pressure hydraulic fluid, it extends and retracts the stick assembly to control reach, digging depth, heavy crowding, and material penetration functions.

Importance:

Essential for delivering maximum crowding force, extended reach, and high operational cycle efficiency on 90-ton class mining excavators during severe rock excavation and overburden removal. Featuring a massive 1076 kg heavy-walled barrel and forged steel rod, it effectively absorbs dynamic impact loads and severe bending stress, while advanced internal 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.