Cylinder Group 4I3849/121-1518

Cylinder Group 4I3849/121-1518 

 Excavator    Caterpillar    365B, 365C, 385B, 385C, 385C FS, 5080, 5090B

Bucket Cylinder    Bore    160,00    Stroke    275,00    Hydraulic Cylinder

4I-3849/1211518  

170 kg

Compatible Brand: Caterpillar

Part Number: 121-1518 (1211518)

Superseded / Interchange Numbers: 4I-3849 (4I3849)

Part Name: Excavator Bucket Hydraulic Cylinder Group / Assembly

Technical Specifications: Bore: 160.00 mm / Stroke: 275.00 mm / Weight: ~170 kg / Hydraulic Cylinder

Compatible Machinery: Caterpillar Heavy Hydraulic Excavators and Mining Shovels (365B, 365C, 385B, 385C, 385C FS, 5080, 5090B series)

What It Does:

Serves as the heavy-duty bucket hydraulic cylinder actuator controlling bucket curl, dump, and positioning functions on Caterpillar 365, 385, 5080, and 5090B series heavy mining excavators and front shovels. Powered by high-pressure hydraulic fluid, it extends and retracts to deliver massive mechanical force directly to the bucket linkage for heavy digging, loading, and dumping cycles.

Importance:

Essential for delivering maximum bucket breakout force and maintaining fast cycle speeds during heavy mining, quarrying, and bulk earthmoving operations. Built with a robust 170 kg heavy-walled barrel and high-strength forged rod structure, it effectively withstands extreme shock loads, severe rock impacts, and dynamic bending stresses, 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.