Rammer Hydraulic Hammer Piston 777 161693

Premium Aftermarket  range.Engineered for heavy-duty performance, this high-precision replacement piston is designed as a direct-fit solution for the Rammer 777 hydraulic hammer series. Manufactured to exact OEM dimensional tolerances, this piston restores your breaker to full operational capacity with zero compromise on power, reliability, or service life.
Material & Manufacturing Excellence
Crafted from SAE 4340 alloy steel — the gold standard in high-impact industrial applications. SAE 4340 is a nickel-chromium-molybdenum steel renowned for its exceptional tensile strength, superior toughness, and outstanding fatigue resistance under cyclic high-load conditions. This is the same grade used in aerospace components, military-grade driveshafts, and critical mining equipment — because failure is simply not an option.
Each piston undergoes CNC precision machining to micron-level tolerances, followed by induction hardening and precision grinding on all critical wear surfaces. The result is a surface hardness that dramatically reduces internal wear while the tough alloy core absorbs thousands of impacts without cracking or deforming.
Technical Specifications
Part Number: 161693
Compatible Model: Rammer 777 Hydraulic Hammer
Material: SAE 4340 Alloy Steel
Diameter: 84 mm
Length: 473 mm
Weight: 14 kg
Warranty: 12 Months
Why Choose This Piston?
Direct OEM fitment — no modifications required, bolt-in replacement
SAE 4340 steel — superior strength-to-weight ratio vs. standard carbon steel
Precision ground surfaces — minimizes seal wear and extends service intervals
Induction hardened — maximum surface durability under extreme impact loads
12-month warranty — confidence-backed quality guarantee
Fast global shipping — minimizing your machine downtime
Compatibility
Designed exclusively for the Rammer 777 series hydraulic hammer, compatible with excavators and carriers in the 2.6 to 9.5 tonne operating range.