NPK GH9 Piston

Aftermarket replacement piston for NPK GH9 hydraulic breakers. Precision-ground, heat-treated alloy steel; OEM-compatible fit and high impact durability.

NPK GH9 Hydraulic Breaker Piston

The GH9 piston is a high-quality aftermarket spare part, fully compatible with the original hydraulic breaker design. Manufactured from premium alloy steel and precision-ground to tight tolerances, it transfers impact energy efficiently while maintaining proper guidance and sealing inside the cylinder. Optimized geometry and surface finish help reduce friction, wear, and heat generation, ensuring reliable performance and long service life.

See All NPK GH9 Spare Parts → See All Piston Models → All Spare Parts →

🛡️ Warranty & Delivery: When operated at the correct pressure and flow values, HKM pistons are covered by a 1-Year operational warranty against breakages caused by metal fatigue, excluding scratches resulting from the breakage of tie rods. Shipping costs are not included in our prices.

FEATURES

Premium alloy steel with controlled heat treatment for high impact strength and fatigue resistance.
Precision-ground OD and sealing lands for stable guidance and leak-free operation.
Optimized mass and geometry to maintain impact energy transfer and reduce vibration.
Machined lubrication channels/reliefs per OEM-equivalent specifications for consistent oil film.
Dimensional accuracy ensures proper alignment with cylinder and bushings.

TECHNICAL SPECIFICATIONS

Compatible Brand	NPK
Compatible Model	GH9
Material	Heat-Treated Premium Alloy Steel

COMPATIBILITY & MANUFACTURING STANDARDS

This piston is designed as a direct replacement, fully compatible with the original hydraulic breaker specifications of the related brand and model. All pistons are produced under strict quality control, focusing on raw material certification, heat treatment, grinding/honing, and surface finishing. Dimensional inspection and surface integrity checks help ensure durability and OEM-level compatibility.
Piston is sometimes referred to as ram, striker, or impact piston by different manufacturers.

WHAT IS INCLUDED IN A PISTON ASSY?

Depending on the hydraulic breaker brand and model, a piston assembly may include:

Piston
Piston Seal Set (e.g., O-rings, backup rings / chevron-type seals)
Wear / Guide Rings
Retaining Ring / Snap Ring
Spacer / Sleeve / Bushing (if applicable)

This is general information. The product you are currently viewing may or may not include all of these parts.

Frequently Asked Questions (FAQ)

Q: Is this piston compatible with GH9?
A: Yes, this product is specifically manufactured according to GH9 hydraulic breaker specifications for a 100% fit.

Q: Does the piston come with a warranty?
A: Yes, our pistons have a 1-year warranty against breakage due to metal fatigue under correct operating conditions.

Q: Are shipping costs included in the price?
A: No, shipping is not included in our prices. Please contact our sales team to get a quote for the best delivery options to your location.

🤔 Not Sure Which Piston Fits?

If you are unsure whether this piston is the right match for your breaker, we are here to help.

Simply send us your breaker's brand and model details. Our expert team will identify the perfect match for you and share a personalized offer.

Warranty When operated at the correct pressure and flow values, pistons produced by HKM are covered by a 1-Year operational warranty against breakages caused by metal fatigue, excluding scratches resulting from the breakage of tie rods.

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