Cylinder Group 170-9836/334-9998

Excavator Caterpillar 312C, 312C L

Boom Cylinder Bore 170,00 Stroke 1.015,00 Hydraulic Cylinder

1709836/3349998

Compatible Brand: Caterpillar

Part Number: 334-9998 (3349998)

Superseded / Interchange Numbers: 170-9836 (1709836)

Part Name: Excavator Boom Hydraulic Cylinder Group

Technical Specifications: Bore: 170.00 mm / Stroke: 1,015.00 mm / Weight: Not Specified (Heavy-Duty) / Hydraulic Cylinder

Compatible Machinery: Caterpillar Hydraulic Excavators (312C, 312C L series)

What It Does:

Serves as the primary boom hydraulic actuator raising and lowering the main boom assembly on Caterpillar 312C and 312C L series hydraulic excavators. Powered by high-pressure hydraulic fluid, it extends and retracts to drive the vertical lifting and lowering cycles of the main boom, stick, and bucket assembly under full payload conditions.

Importance:

Critical for defining total lifting capacity, digging stability, and safe load handling during excavation, trenching, and heavy material handling operations. Built with a heavy-walled barrel and high-strength forged rod structure, it effectively resists severe bending stress, vertical shock loads, and dynamic fatigue, 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.