Products
HKM Grey Series
A broad model range from mini to heavy class (G10-G280).
Grey Series / Gas-Hybrid
Grey Line breakers offer the simplest breaking operation with a hybrid working principle. Each Grey Line breaker is engineered to operate within a wide oil flow range, which lets us run them on different carriers and under different excavator pump performances.
Breaker settings can be optimized based on the rock type, higher impact energy at lower frequency, or lower impact energy at higher frequency. HKM offers the simplest solution with Grey Line.
From the Field
At Work in the Field
From quarry to demolition site, see how our breakers perform in real-world conditions.
0.7 - 12 ton
Mini Class
Compact Design.Urban Precision.
Grey Line Mini breakers are engineered for effective and easy use in urban areas, asphalt breaking, demolition and trench works.
The hybrid power unit makes a wide range of operating oil pressure and oil flow possible, which simplifies your work.
The slim design allows easy access in the trench. A simplified power unit with fewer components ensures trouble-free operation, and ergonomic details are included to save time on the jobsite.
Grey Line Mini breakers are the fast and affordable answer for landscaping and urban demolition works.
HKM G10
- Operating Weight
- 110 kg
- Carrier Class
- 0,7-3 t
- Tool Diameter
- Ø40 mm
HKM G12
- Operating Weight
- 120 kg
- Carrier Class
- 1,2-3 t
- Tool Diameter
- Ø45 mm
HKM G15
- Operating Weight
- 155 kg
- Carrier Class
- 1,5-5 t
- Tool Diameter
- Ø53 mm
HKM G20
- Operating Weight
- 220 kg
- Carrier Class
- 2-5 t
- Tool Diameter
- Ø60 mm
HKM G30
- Operating Weight
- 320 kg
- Carrier Class
- 3-9 t
- Tool Diameter
- Ø68 mm
HKM G30BL
- Operating Weight
- 320 kg
- Carrier Class
- 3-9 t
- Tool Diameter
- Ø68 mm
HKM G40
- Operating Weight
- 400 kg
- Carrier Class
- 6-12 t
- Tool Diameter
- Ø75 mm
HKM G40BL
- Operating Weight
- 400 kg
- Carrier Class
- 6-12 t
- Tool Diameter
- Ø75 mm
Technical Specifications, Mini Class
 |  |  |  |  |  |  |  | |
| Model | G10 | G12 | G15 | G20 | G30 | G30BL | G40 | G40BL |
|---|---|---|---|---|---|---|---|---|
| Carrier Weight (ton) | 0,7-3 | 1,2-3 | 1,5-5 | 2-5 | 3-9 | 3-9 | 6-12 | 6-12 |
| Operating Weight (kg) | 110 | 120 | 155 | 220 | 320 | 320 | 400 | 400 |
| Tool Diameter (mm) | 40 | 45 | 53 | 60 | 68 | 68 | 75 | 75 |
| Input Power (kW) | 3.2 | 5.3 | 6.6 | 6.6 | 11.5 | 11.5 | 15.8 | 15.8 |
| Operating Pressure (bar) | 75-95 | 90-120 | 90-120 | 90-120 | 110-140 | 110-140 | 120-150 | 120-150 |
| Oil Flow (l/min) | 15-30 | 20-40 | 25-50 | 30-45 | 40-70 | 40-70 | 50-90 | 50-90 |
| Impact Rate (bpm) | 900-1400 | 700-1200 | 600-1100 | 550-800 | 500-900 | 500-900 | 400-800 | 400-800 |
7 - 26 ton
Medium Class
Lightweight Build.Heavy Performance.
HKM Grey Line medium breakers are engineered to generate the simplest solutions and high performance.
The power unit, a combination of gas and hydraulic working principles, can be used across a wide range of operating oil pressure. Thus, Grey Line breakers attach to various excavators and save fuel with adjustable pressure settings.
Despite its light weight, the Grey Line medium breaker makes a difference with high performance.
Maximum damping of sound and vibration, with long abrasion plates surrounding the breaker, minimizes spare part consumption.
HKM G60
- Operating Weight
- 600 kg
- Carrier Class
- 7-14 t
- Tool Diameter
- Ø85 mm
HKM G90
- Operating Weight
- 955 kg
- Carrier Class
- 12-20 t
- Tool Diameter
- Ø100 mm
HKM G120
- Operating Weight
- 1240 kg
- Carrier Class
- 14-22 t
- Tool Diameter
- Ø120 mm
HKM G130
- Operating Weight
- 1313 kg
- Carrier Class
- 15-18 t
- Tool Diameter
- Ø125 mm
HKM G160
- Operating Weight
- 1610 kg
- Carrier Class
- 16-21 t
- Tool Diameter
- Ø135 mm
HKM G170
- Operating Weight
- 1720 kg
- Carrier Class
- 18-26 t
- Tool Diameter
- Ø135 mm
HKM G190
- Operating Weight
- 1830 kg
- Carrier Class
- 18-26 t
- Tool Diameter
- Ø140 mm
Technical Specifications, Medium Class
 |  |  |  |  |  |  | |
| Model | G60 | G90 | G120 | G130 | G160 | G170 | G190 |
|---|---|---|---|---|---|---|---|
| Carrier Weight (ton) | 7-14 | 12-20 | 14-22 | 15-18 | 16-21 | 18-26 | 18-26 |
| Operating Weight (kg) | 600 | 955 | 1240 | 1313 | 1610 | 1720 | 1830 |
| Tool Diameter (mm) | 85 | 100 | 120 | 125 | 135 | 135 | 140 |
| Input Power (kW) | 19.3 | 25.3 | 28 | 28 | 35 | 34.4 | 42.5 |
| Operating Pressure (bar) | 130-160 | 150-170 | 150-170 | 150-170 | 160-180 | 140-160 | 160-180 |
| Oil Flow (l/min) | 60-100 | 80-110 | 90-120 | 90-120 | 100-150 | 125-150 | 120-180 |
| Impact Rate (bpm) | 400-800 | 350-750 | 400-750 | 350-650 | 350-600 | 400-700 | 350-500 |
25 - 55 ton
Heavy Class
Maximum Impact.Built for Demolition.
Grey Line heavy breakers are developed for maximum impact in large-scale demolition and quarry operations. Engineered with a high-capacity power unit, they deliver consistent performance even under the toughest conditions.
The gas-hydraulic hybrid system allows wide operating pressure ranges, making the breaker compatible with multiple heavy-class excavators.
Advanced damping systems reduce vibration and protect both the carrier and the breaker components, extending service life and minimizing downtime. Wear-resistant housing and oversized impact components ensure long-term durability in mining and heavy-duty applications.
Grey Line heavy breakers offer the perfect balance of raw power, efficiency and durability for your most demanding jobs.
Technical Specifications, Heavy Class
 |  |  |  | |
| Model | G210 | G230 | G270 | G280 |
|---|---|---|---|---|
| Carrier Weight (ton) | 25-30 | 25-35 | 28-35 | 34-55 |
| Operating Weight (kg) | 2110 | 2330 | 2630 | 2850 |
| Tool Diameter (mm) | 150 | 150 | 155 | 160 |
| Input Power (kW) | 51 | 48.2 | 59.5 | 62.7 |
| Operating Pressure (bar) | 160-180 | 160-180 | 160-180 | 165-185 |
| Oil Flow (l/min) | 150-210 | 150-190 | 180-240 | 180-250 |
| Impact Rate (bpm) | 300-450 | 350-650 | 300-450 | 275-450 |
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