Cylinder Group 7Y5150/118-3921/177-2465/247-8853/612-8257

Excavator Caterpillar 322C, 325C, 330C, 330C L, 385B, 385C L

Bucket Cylinder Bore 150,00 Stroke 1.156,00 Hydraulic Cylinder

7Y-5150/1183921/1772465/2478853/6128257

265 kg

Compatible Brand: Caterpillar

Part Number: 612-8257 (6128257)

Superseded / Interchange Numbers: 7Y-5150 (7Y5150), 118-3921 (1183921), 177-2465 (1772465), 247-8853 (2478853)

Part Name: Bucket Hydraulic Cylinder Group

Technical Specifications: Bore: 150.00 mm / Stroke: 1,156.00 mm / Weight: ~265 kg / Hydraulic Cylinder

Compatible Machinery: Caterpillar Hydraulic Excavators (322C, 325C, 330C, 330C L, 385B, 385C L series)

What It Does:

Serves as the bucket hydraulic actuator controlling bucket curl and dump functions on Caterpillar 322C, 325C, 330C, and 385 series hydraulic excavators. Powered by high-pressure hydraulic fluid, it extends and retracts to drive bucket digging, material loading, and dumping cycles.

Importance:

Essential for generating optimal bucket breakout force and maintaining smooth operational cycle speeds during heavy excavation, quarrying, and earthmoving tasks. Featuring a robust 265 kg heavy-walled barrel and high-strength forged rod, it effectively absorbs dynamic shock loads and severe torsional stress, while advanced internal seals prevent fluid bypass under continuous 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.