Enclosed housing
The closed bracket shields the main hammer body from direct contact with broken rock.
← All hydraulic breaker typesJY-B series · Excavator attachment
Box-type hydraulic breaker
A hydraulic breaker with an enclosed housing for rock and concrete breaking. The box-style enclosure protects the breaker body; review local noise requirements and the required machine configuration.
- Housing / bracket
- Enclosed box housing
- Primary work
- Concrete breaking and site demolition
- Model range
- 21 configurations
Product & applications
About the box-type hydraulic breaker
A hydraulic breaker with an enclosed housing for rock and concrete breaking. The box-style enclosure protects the breaker body; review local noise requirements and the required machine configuration.
Features & benefits
Internal impact damping
A damper between the body and bracket supports the hammer and reduces transmitted impact and operating noise.
Changeable top mounting
The described replaceable top head allows the bracket connection to be matched to the selected excavator.
Typical applications
- Rock and quarry workBreak accessible rock and weathered stone within the hammer and carrier limits.
- Road and bridge removalBreak suitable concrete and pavement during road or bridge dismantling.
- Building demolitionUse the enclosed hammer for concrete breaking where body protection and noise reduction are useful.
Match the breaker to your excavator.
Compare machine weight, hydraulic flow and pressure together. Hammer weight differs between side, top and box configurations.
Pressure unit: kgf/cm². This table retains its original numerical values. Pressure is not shown in bar.
| Model | Chisel diametermm | Excavator operating weightt | Hammer weightkg | Operating pressurekgf/cm² | Hydraulic oil flowL/min | Blow frequencybpm | Hose diameterinch |
|---|---|---|---|---|---|---|---|
| JY-B05 | 35 | 0.5-1 | 117 | 90-120 | 15-25 | 800-1450 | 1/2 |
| JY-B10 | 40 | 0.8-2.5 | 128 | 90-120 | 15-25 | 800-1450 | 1/2 |
| JY-B20 | 45 | 1.2-3.0 | 146 | 90-120 | 20-30 | 700-1200 | 1/2 |
| JY-B30 | 53 | 2.5-4.5 | 214 | 90-120 | 25-50 | 600-1100 | 1/2 |
| JY-B35 | 60 | 3–5.5 | 270 | 90-120 | 25-50 | 600-1100 | 1/2 |
| JY-B40 | 68 | 4–7 | 324 | 110-140 | 40-70 | 500-900 | 1/2 |
| JY-B43 | 75 | 6–9 | 412 | 120-150 | 50-90 | 400-800 | 1/2 |
| JY-B45 | 85 | 7–14 | 766 | 120-150 | 50-90 | 400-800 | 3/4 |
| JY-B50 | 100 | 11–16 | 1,015 | 150-170 | 80-110 | 350-700 | 3/4 |
| JY-B60 | 125 | 15-18 | 1,780 | 150-170 | 80-110 | 350-700 | 3/4 |
| JY-B70 | 135 | 16-21 | 1,910 | 160-180 | 130-150 | 400-800 | 1 |
| JY-B81 | 140 | 18-26 | 2,100 | 160-180 | 120-180 | 350-500 | 1 |
| JY-B81A | 140 | 18-26 | 2,197 | 160-210 | 120-180 | 400-550 | 1 |
| JY-B100 | 150 | 26-30 | 2,265 | 160-180 | 150-210 | 350-450 | 1 |
| JY-B121 | 155 | 28-32 | 2,781 | 160-180 | 180-240 | 300-450 | 1¼ |
| JY-B131 | 165 | 30-35 | 2,996 | 160-180 | 200-260 | 250-400 | 1¼ |
| JY-B140 | 165 | 32-38 | 3,314 | 160-180 | 210-270 | 250-380 | 1¼ |
| JY-B151 | 175 | 37-45 | 4,108 | 160-190 | 210-290 | 200-350 | 1¼ |
| JY-B185 | 185 | 45-50 | 6,352 | 205-245 | 220-300 | 180-200 | 1¼ |
| JY-B195 | 190 | 48-55 | 7,125 | 225-265 | 270-330 | 180-200 | 1¼ |
| JY-B210 | 210 | 60-75 | 7,836 | 245-285 | 290-350 | 150-180 | 1¼ |
On smaller screens, swipe the table sideways to see every specification.
Installation requirements
Confirm the attachment fits your excavator
Before ordering, send the machine identification and the connection, power and working information relevant to this product.
- D1 / D2
- Both pin diameters
- C
- Pin centre distance
- W
- Clear mounting width
Excavator weight class
Excavator model, operating weight and mounting connection.
Oil supply
Available flow, pressure, return pressure and relief settings.
Working tool
Tool diameter and point or chisel suitable for the material.
Operating conditions
Material, access, duty cycle and lubrication requirements.
Product questions
Box-type hydraulic breaker questions
Is excavator weight enough to select a breaker?
No. Compare oil flow, pressure, return requirements, mounting and attachment mass with the selected model.
What should I compare when choosing a box-type breaker?
Compare the bracket or housing dimensions, mounting connection and available working clearance for the intended breaking task.
How is the working tool selected?
Choose the specified point or chisel for the material and work. Rock breaking and concrete demolition can require different working tools.
Does it need a dedicated hydraulic check?
Yes. Confirm the hammer circuit, pressure, flow and return arrangement against the installation instructions. Do not infer suitability from pin fit alone.
Compare Related Products
Hydraulic Breakers
Side-type hydraulic breaker
An open-frame hydraulic breaker with a side-mounted bracket for breaking rock and concrete. Check the mounting geometry and hydraulic requirements for your excavator.
Hydraulic Breakers
Top-type hydraulic breaker
An open-frame hydraulic breaker with an upper mounting bracket for rock breaking, concrete removal and vertical work. Match the breaker to the carrier and hydraulic circuit.