MSB MS 55AT Hydraulic Breaker

MSB MS 55AT is a power station with high impact energy, produced for 50-75 ton class excavators.

Massive Power: Breaks the hardest rocks with a 180 mm tool diameter and 5.5 ton weight.
Automatic Protection: Oil Flow Control (OFC) Valve and Super Anti Blank Firing (SABF) System help prevent operator-related errors.
Fully Equipped: Underwater Application (UA) and Manual Autogrease System I (Powercell) are standard; Autogrease System II (Side Mounted Refiller) is optional.

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Product Features and Advantages

MSB MS 55AT is designed for primary breaking in quarries and large infrastructure projects. Its high breaking power offers an environmentally friendly and economical alternative to blasting. With its reinforced body and wear-resistant plates, it stands up to the most demanding site conditions.

✅ OFC (Flow Control Valve): Protects the breaker against changes in hydraulic flow and stabilizes performance.
✅ Super Anti Blank Firing (SABF) System: Stops the impact when the tool loses contact, protecting internal components.
✅ All-in-One Type of Upper Bushing & Thrust Ring: One-piece design providing easy maintenance and extra durability.

✅ Original Cylinder Design: A cylinder with a round upper section and square lower section improves operating stability.
✅ 180° Rotating Housing: The housing can be rotated to prevent one-sided wear.
✅ Underwater Application (UA) & Autogrease System II (Side Mounted Refiller): Includes all required infrastructure (UA) for demanding conditions.

Technical Specifications (MS 55AT)

Feature	Unit	Values
Operating Weight	kg	5500
Tool Diameter	mm	180
Operating Pressure	bar	130 - 150
Oil Flow	l/min	250 - 305
Impact Rate	bpm	300 - 400
Line Relief Pressure	bar	180 - 200
Accumulator Pressure	bar	40
Hose (Inlet / Return)	mm	32 / 38
Suitable Carrier (Excavator)	ton	50 - 75

HYDRAULIC BREAKER SET CONTENT / INCLUDED IN THE SET

Hydraulic Breaker Machine
Mounting Bracket
Breaker Tools (1 Chisel, 1 Moil Point)

Hydraulic Connection Hoses
Carrier Connection Pins
Tool Box

MS 55AT Superior Features

Feature	Status
Oil Flow Control (OFC) Valve	✔ Available (Standard)
Super Anti Blank Firing (SABF) System	🟠 Optional
Underwater Application (UA)	✔ Available (Standard)
All-in-One Type of Upper Bushing & Thrust Ring	✔ Available (Standard)
Accumulator System	✔ Available (Standard)
180° Rotating Housing	✔ Available (Standard)
Soundproof Housing Application (SHA)	✔ Available (Standard)
Manual Autogrease System I (Powercell)	✔ Available (Standard)
Autogrease System II (Side Mounted Refiller)	🟠 Optional
Dust Protector (Wiper Seal)	🟠 Optional
Replaceable Inner Bushing Sleeve (RIBS)	🟠 Optional
Easy Pass Valve (Oil Traffic Control)	✔ Available (Standard)

MSB Large Breakers - Technical Specifications

Technical Specifications	Unit	MS 30AT	MS 35AT	MS 45AT	MS 55AT	MS 75AT
Operating Weight	kg	2440	2950	3750	5500	7500
Tool Diameter	mm	150	165	175	180	205
Operating Pressure	bar	130-150	130-150	130-150	130-150	140-160
Oil Flow	l/min	170-200	190-220	210-240	250-305	300-400
Impact Rate	bpm	350-450	300-450	300-400	300-400	300-400
Line Relief Pressure	bar	180-200	180-200	180-200	180-200	190-210
Accumulator Pressure	bar	40	40	40	40	50
Hose (Inlet)	mm	25	25	25	32	38
Hose (Outlet)	mm	32	32	32	38	51
Carrier Weight	ton	28-33	30-45	40-55	50-75	70-100

Weight (Kg) 5500

Warranty 🛡️ 1-Year Warranty Assurance This product is covered by a 1-year warranty against material and assembly defects. Note: Consumables and wear parts that require regular replacement during operational use are not included in the warranty coverage. For any questions and detailed information about the warranty procedure, you can contact our expert team at info@hkm.com.tr.

Delivery Information Delivery time is 7 business days. You can contact info@hkm.com.tr for detailed information.