Kent Hydraulic Breaker – Kubota K7870 Quick Attach Excavator Mount

Description

Inside cramped city utility trenches on rainy mornings, shattering stubborn bedrock requires fast attachment coupling without manual pin driving. The Kent Hydraulic Breaker Kubota K7870 connects directly to factory Kubota quick-attach excavator couplers to fracture reinforced concrete footings. Excavator operators transition from trenching buckets to heavy hydraulic breaking in seconds. Operating this breaker requires verified auxiliary hydraulic flow to prevent cavitation inside excavator control blocks.

Hydraulic Flow Bench Impact Benchmarks

Flow-bench testing verifies hammer cycling reliability across auxiliary flows from 6.0 to 11.5 GPM at operating relief pressures of 2100 PSI. The internal piston delivers three hundred fifty foot-pounds of impact energy at eleven hundred blows per minute into hard river gravel concrete. Return line back-pressure testing proves internal seals withstand continuous back-pressures up to 220 PSI before cycle damping occurs. Nitrogen gas head chamber pressure requires maintaining two hundred eighty PSI at seventy degrees Fahrenheit to preserve full stroke impact velocity.

High-tensile forged chromium-molybdenum alloy steel forms the monoblock hammer body, eliminating exterior side bolts that stretch under high lateral breaking torque. The upper mounting bracket integrates precision-machined pin ears configured specifically for the Kubota K7870 quick-coupler wedge mechanism. Sized for three-to-four-ton mini excavators, the attachment weighs 485 lbs with a working tool chisel diameter of 2.1 inches, matching boom lift capacities across standard compact machinery.

Key Features of Kent K7870

Utility excavation contractors buy Kent Hydraulic Breaker Kubota K7870 units to break concrete curbs and shatter trench rock without manual coupling labor. Compare commercial excavator hydraulic breaker pricing to upgrade your compact utility equipment attachments.

• Kubota K7870 quick-attach profile hooks and locks securely without requiring manual grease-covered pin hammering.
• Monoblock breaker housing eliminates external side bolts to minimize jobsite fastener loosening and fatigue fractures.
• Pressurized nitrogen gas energy chamber intensifies downward piston blows while dampening hydraulic recoil peaks.
• High-grade alloy moil point fractures dense asphalt, cured foundation concrete, and frozen limestone cleanly.
• Field-replaceable lower bushing supports working tool alignment, protecting internal cylinder bore walls from scuffing.

Trench Demolition Negative Selection Filter

The quick-attach ears latch positive engagement with the excavator cab lever, letting operators work without ground personnel assistance. Do not buy this medium breaker for micro excavators under two tons, high-volume quarry production mining, or continuous underwater demolition work. Routine maintenance mandates pumping high-molybdenum chisel paste into front grease fittings every two hours of breaking, inspecting coupler wedges for wear, and verifying excavator hydraulic return oil cooler temperatures.

Factory Warranty Crate Inclusions

Kent backs this hydraulic breaker with a 1-Year manufacturer warranty against casting flaws, piston cracking, and cylinder failure. The factory crate includes one hydraulic breaker with dedicated K7870 mounting cap, two hydraulic connector hoses with flat-face couplers, moil point chisel, toolbox, and operator guide.