JCB HM380Hard Rock Chisel Tool
Part code: 218033915
NPK GH2 Hard Rock Chisel Tool
- Breaker: NPK GH2
- Tool type: Hard rock chisel tool
- Diameter: 66 mm
- Length: 740 mm
- Weight: 21 kg
- Material: OEM quality, heat-treated alloy steel
- Delivery: fast delivery from stock or made in 5 working days
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*Representative image. May vary depending on brand and model.
Hard rock chisel tool for the NPK GH2 hydraulic breaker: Ø66 mm diameter, 740 mm length, 21 kg. OEM quality, made from heat-treated alloy steel; fast delivery from stock or made in 5 working days.
Technical Data
| Breaker Brand / Model | NPK GH2 |
|---|---|
| Tool Type | Chisel Tool |
| Option | Hard Rock |
| Diameter | 66 mm |
| Overall Length | 740 mm |
| Weight | 21 kg |
| Material | High-nickel alloy steel, special hardening |
| Product Code | 280032915 |
| Delivery | Fast delivery from stock or made in 5 working days |
Where Is a Chisel Tool Used?
Chisel tools are versatile, general-purpose tools that combine cutting action with controlled fracturing in medium-hard and veined materials. The sharpened edge penetrates reinforced concrete and hard rock easily.
- Primary demolition
- Secondary demolition
- Trenching
- Recycling
- Scaling
- Primary breaking
- Boom mounted applications
According to the material table in our manual, it is recommended for reinforced concrete slabs, walls, columns and foundations, heavily fractured rock, asphalt and frozen ground.
The hard rock version is made from a high-nickel alloy and goes through a special hardening process. It withstands extreme impact forces and abrasive rock, and is the preferred choice for heavy quarrying and mining.
Correct Use: Three Rules
- Work perpendicular. Keep the breaker at a right angle to the surface and avoid side loads. Angled pushing wears the bushings and moves the piston off the tool axis.
- Do not pry. Rocking the tool like a lever before it is fully seated, or rotating the breaker while the tool is embedded, is the most common cause of tool breakage.
- Do not twist the chisel. A chisel tends to rotate along its path. This twisting wears the retaining pin slots and makes the tool break at the slot.
Breakage caused by ignoring these rules is not covered by the warranty. See our tool selection guide, the tool use section and the Tool User Manual and Warranty Terms.
Other Tool Types for NPK GH2
| Tool Type and Size | Options |
|---|---|
| Moil Point ToolØ66 x 740 mm | Standard · Dust Grooved · Hard Rock · Dust Grooved + Hard Rock |
| Chisel ToolØ66 x 740 mm | Standard · Dust Grooved · Hard Rock (this page) · Dust Grooved + Hard Rock |
| Pyramid ToolØ66 x 740 mm | Standard · Dust Grooved · Hard Rock · Dust Grooved + Hard Rock |
| Blunt ToolØ66 x 740 mm | Standard · Hard Rock |
Wide chisel, tarmac cutter and driving tools are made to order; if you need one of these for your NPK GH2, write to sales@hkm.com.tr.
NPK GH2 Spare Parts
Check the bushings when you change the tool: worn lower and upper bushings can break both the tool and the piston.
For other NPK models see NPK tools and spare parts.
Manufacturing, Delivery and Warranty
HKM manufactures this tool to OEM quality from heat-treated alloy steel. Tools in stock ship quickly; if not in stock, the tool is made in 5 working days. Transport time is added depending on the method (road, air, sea).
Tools are warranted against manufacturing defects only; breakage caused by improper use is not covered.
Frequently Asked Questions
Q: What are the dimensions of the NPK GH2 hard rock chisel tool?
A: The NPK GH2 hard rock chisel tool is made for the NPK GH2 hydraulic breaker: diameter 66 mm, overall length 740 mm, weight 21 kg. Just state your breaker brand and model when you order.
Q: Will another tool with the same diameter and length fit my NPK GH2?
A: Not always. The position and shape of the retaining pin slot change with brand and model; a tool with the same diameter and length may not fit. This tool is made to the slot dimensions of the NPK GH2.
Q: What is the NPK GH2 hard rock chisel tool used for?
A: The NPK GH2 hard rock chisel tool is mainly used for: primary demolition, secondary demolition, trenching, recycling, scaling, primary breaking, boom mounted applications. According to the material table in our manual, it is recommended for reinforced concrete slabs, walls, columns and foundations, heavily fractured rock, asphalt and frozen ground.
Q: When should I choose a hard rock chisel tool for the NPK GH2?
A: The hard rock version is made from a high-nickel alloy and goes through a special hardening process. It withstands extreme impact forces and abrasive rock, and is the preferred choice for heavy quarrying and mining. For general demolition and construction the standard tool is enough.
Q: Which other tool types are available for the NPK GH2?
A: We make 14 different tools for the NPK GH2: moil point tools, chisel tools, pyramid tools, blunt tools, with dust grooved and hard rock options. You can reach all of them from the Other Tool Types table on this page.
Q: How long is the delivery time for the NPK GH2 hard rock chisel tool?
A: If the NPK GH2 hard rock chisel tool is in stock, it ships quickly. If not, it is made in 5 working days; transport time is added depending on the shipping method.
Q: Is the NPK GH2 hard rock chisel tool covered by warranty?
A: Like all HKM breaker tools, the NPK GH2 hard rock chisel tool is warranted against manufacturing defects only. The fracture surface is examined; if the fracture started from a flaw inside the material, the tool is covered. Breakage from prying, blank firing, rotating the embedded tool or working with worn bushings is not covered.
Q: What shortens the life of the NPK GH2 hard rock chisel tool the most?
A: Prying before the tool is fully seated, blank firing, striking one spot for too long, insufficient or wrong grease, and working with worn bushings. On a chisel, twisting also wears the retaining pin slots.
Q: What else should I check when I change the tool on my NPK GH2?
A: Compare the inner diameters of the lower and upper bushings and the thrust bushing surface with the tolerances in your breaker's service manual. Worn bushings move the tool and piston off axis.
Q: What other names is the NPK GH2 hard rock chisel tool known by?
A: It is also called “wedge”, “wedge tool”, “flat chisel”. NPK documents use “crosscut chisel”, “in-line chisel”, “hammer tool”. Breaker tools in general are also known as breaker chisels, working tools or hammer tools.
Product Information
- Weight (kg)
- 21
- Dimensions
- 66x740x66 cm
- Warranty
- Please review the Tool User Manual and Warranty Terms document on this page. HKM breaker tools are warranted against manufacturing defects only. If a tool breaks, the fracture surface is examined; if the fracture started from a flaw inside the material, the tool is covered by the warranty. Damage caused by improper use is not covered: prying before the tool is fully seated, blank firing, rotating or side-loading the breaker while the tool is embedded, striking the surface with the tool using the boom, and working with worn bushings.
- Delivery Information
- Delivery time is 7 business days for orders within Turkiye. For orders outside Turkiye, the transport time will be added. But for the products that we have in stock, the delivery time will be shortened significantly. For more information; contact sales@hkm.com.tr
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