LIS® Hydraulic Breakers for Excavators (40.0 – 75.0 t)

LIS® Hydraulic Breakers for Heavy Excavators (40–75 t)

This category includes hydraulic breakers for excavators from 40 to 75 tons, designed for heavy-duty demolition and rock breaking applications. In this performance class, impact energy, durability and operational reliability are critical.

Typical applications include primary demolition of reinforced concrete structures, quarry operations, and large-scale demolition and infrastructure projects.

(For smaller machines, you'll find our hydraulic hammers for mini excavators up to 7 tons here.)

(For smaller excavators, you'll find our hydraulic hammers for excavators from 8 to 35 tons here.)

Impact Performance & System Design

Hydraulic breakers in this class operate with high impact energy and are designed for continuous operation under load. The key factor is the correct combination of carrier machine hydraulics and the breaker’s internal impact system.

• ABH System (Anti-Blank Hammering): Prevents blank firing and reduces stress on piston and cylinder.
• Nitrogen Assistance: Increases impact energy and ensures consistent performance in hard materials.
• Box-Type Housing: Fully enclosed design to reduce noise and vibration.

Carrier Machine & Hydraulic Requirements

In the 40 to 75 ton class, proper matching between breaker and carrier machine is essential. Oil flow, operating pressure and return line setup must meet the technical specifications of the breaker.

Before operation or retrofit, the following must be checked:

• ✔ sufficient hydraulic pressure and oil flow
• ✔ proper return line (low back pressure)
• ✔ carrier machine suitability for continuous heavy-duty operation

Compatibility & Mounting Options

Breakers in this class can be installed via direct pin-on mounting or quick coupler systems. Compatible systems include:

• Lehnhoff: MS21, MS25
• Verachtert: CW40, CW45
• OilQuick: OQ70/55, OQ80, OQ90
• Direct Mount: Pin-on mounting for maximum stability

For converting existing attachments, suitable adapter frames and weld-on frames are available in our range.

Tool Selection for Heavy Applications

Choosing the correct tool is critical for performance and wear:

• Moil Point: For concentrated impact on concrete and rock
• Chisel Tool: For cutting and controlled demolition
• Blunt Tool: For breaking oversized material

Matching tools and spare parts are available in our hydraulic breaker accessories category.

Consulting & System Matching

For hydraulic breakers in this performance class, correct matching between breaker, hydraulic system and carrier machine is essential for service life and efficiency. Our team supports you in selecting the right configuration.

Note: Brand names are used solely to identify compatibility. These are not original parts from the respective manufacturers.