Danuser CB40

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The Danuser Hammer CB40 has a 40” drop hammer design that breaks up to 9” thick reinforced concrete.
This low maintenance concrete breaker achieves a full stroke with every cycle, delivering 82,000 lbs of impact force. An innovative anti-dry fire feature improves the durability of the machine. This is a great product for the industrial or commercial jobsite. Ideal for the demolition of parking lots, foundations, flooring, sidewalks, curbs, and more!

Proven Design

40" Drop Hammer Design

Breaks up to 9" thick reinforced concrete.

Anti-Dry Fire

An innovative anti-dry fire feature prevents unnecessary firing which improves the durability of the machine.

Free Fall Design

Creates smooth operation with less shock back to the vehicle.

CB40 Breaker Kit

Available to convert any Hammer post driver into a concrete breaker.


Part ID: 21017 - Hammer CB40

Overall Length (inches)

Overall Width (inches)

Overall Height (inches)

Machine Weight
1,080 lbs.

Hammer Weight
500 lbs.

Length of Stroke (inches)

Maximum Strokes per Minute

Hydraulic Requirements
1,500 - 3,000 PSI

*12-30 GPM

Impact Force
82,000 lbs.

Impact Energy
1,709 ft.-lbs.

* Hammer will still operate on machines with less than 12 GPM with fewer strokes per minute.

Skid-Steer Quick Attach Mount is standard. Backhoe & excavator custom mounts are available by submitting the form below the Gallery section.