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2026
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03
SK40S Rock Breaker Power Cell : Stock Secured, U.S. Shipment Underway
Leading hydraulic attachment supplier Yantai Rocka is pleased to announce that a new batch of core units for the SK40S Hydraulic Rock Breaker is now fully stocked and currently being prepared for shipment to the United States.
Engineered for precision and durability, the SK40S is specifically designed to pair with 4 to 7-ton class excavators, making it an ideal solution for urban construction, road maintenance, and small-scale quarrying applications where maneuverability and power are essential.
The core unit—commonly referred to as the breaker’s “heart”—is the central power cell responsible for delivering consistent impact force. Each SK40S core unit is built to meet rigorous performance standards, featuring an impact rate ranging from 500 to 900 beats per minute (bpm) , allowing operators to match striking power to material density for maximum efficiency and reduced wear.
With a tool (chisel) diameter of 2.7 inches, the SK40S delivers concentrated breaking force while maintaining structural integrity under high-cycle workloads. This combination of impact variability and robust tooling ensures reliable performance in applications such as foundation excavation, trenching, and concrete demolition.
The current stock buildup supports increased demand from North American distributors and rental fleets, ensuring shorter lead times and consistent availability for end users across the United States. Shipments are scheduled to depart in the coming weeks, with additional inventory planned to support ongoing market growth.
About Yantai Rocka
About Yantai Rocka is a trusted supplier of hydraulic attachments and components, specializing in rock breakers, quick couplers, and wear parts for compact and mid-size excavators. With a focus on quality control and supply chain reliability, the company serves dealers and contractors across America Australia, Canada, and Mexico etc. for many years.
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Yantai Rocka Machinery Co., Ltd
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Yantai, Shandong, China 265500
www.rockahammer.com
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