Hydraulic Breakers

Box Silenced Hydraulic Breaker

Silenced box-type hydraulic breaker for 1–36 t excavators and backhoes. Damped housing lowers noise; ideal for urban demolition. CE certified.

Carrier range: 1 – 36 t
Chisel diameter: 45 – 155 mm
Operating weight: 150 – 2,950 kg
Working pressure: 90 – 200 bar

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✓ MOQ 1 set · OEM colour & logo available
✓ Bracket made to your pin size / coupler
✓ 12-month warranty · test report & inspection video
✓ Ships from Shanghai / Qingdao — FOB, CIF, DAP

Overview

Quick answerSilenced box-type hydraulic breaker for 1–36 t excavators and backhoes. Damped housing lowers noise; ideal for urban demolition. CE certified.

The box (silenced) breaker encloses the power cell in a closed steel housing lined with polyurethane dampers. Noise and vibration are reduced, the cell is protected from rock impact and the housing can be replaced as a wear part. It is our recommended choice for city work, night shifts and noise-restricted sites.

Typical applications

Urban demolition
Road and utility work
Tunnelling
Night and noise-restricted sites

Scope of supply

Breaker body, mounting bracket for your carrier, 2 hoses, 2 chisels (moil/flat/blunt to choice), nitrogen bottle and charging kit, tool box, operation manual.

Technical specifications

Box Silenced Hydraulic Breaker specifications
Carrier range	1 – 36 t
Chisel diameter	45 – 155 mm
Operating weight	150 – 2,950 kg
Working pressure	90 – 200 bar
Oil flow	20 – 230 L/min
Impact rate	300 – 1,000 bpm
Housing	Closed box, PU dampers, replaceable wear plates
Material	20CrMo + 42CrMo
Certification	CE, ISO 9001
Warranty	12 months

Values are typical; final data is confirmed with the drawing for your carrier.

Key features

Lower noise

Closed housing with isolating dampers reduces sound pressure compared with an open hammer.

Protected power cell

Housing absorbs rock impact and abrasion, extending main body life.

Vibration isolation

Upper and lower dampers reduce shock to the boom and operator.

Replaceable wear plates

Front and side wear plates bolt on for fast refurbishment.

Model range

Model	Carrier (t)	Chisel Ø (mm)	Oil flow (L/min)	Pressure (bar)	Impact rate (bpm)	Hose
SB20	1.2–3	45	20–40	90–120	400–800	1/2"
SB30	2.5–4.5	53	25–50	90–120	500–1000	1/2"
SB40	3–7	68	36–60	110–140	500–900	1/2"
SB43	6–9	75	50–90	120–170	400–800	3/4"
SB50	10–15	100	80–110	150–170	350–700	3/4"
SB70	18–25	135	130–170	160–185	400–650	1"
SB81	20–30	140	150–190	165–185	350–500	1"
SB121	27–36	155	150–230	170–200	300–400	1"

Frequently asked questions

How much quieter is a box breaker?

Noise reduction depends on the model and site, but the enclosed housing is noticeably quieter than open designs and is the usual specification for urban tenders.

Does it weigh more?

Yes, the housing adds weight – check your carrier’s lifting capacity; we size the model accordingly.

How do I choose the right hydraulic breaker size?

Match three numbers: your excavator operating weight, the auxiliary hydraulic flow (L/min) and the relief pressure (bar). The breaker’s recommended carrier range and flow window must cover your machine. Send us the carrier model and we will confirm the model and mounting bracket.

What is the difference between side, top and box type?

Side type is the most compact and economical; top type mounts in line with the dipper arm for straight-down breaking; box (silenced) type wraps the power cell in a damped housing for lower noise and better protection in urban work.

Start your order

Tell us your machine. We’ll match the attachment.

Send the carrier model, auxiliary oil flow and what you need to break, grab, cut or drill. You’ll get a matched model, drawing and price within one working day.