Komatsu JMHB 470V-1 Piston – Built for Maximum Impact
The Komatsu JMHB 470V-1 Piston is the core moving part of your hydraulic breaker. It delivers every blow to the tool, so its strength and precision decide how much power reaches the rock.
Our replacement piston is manufactured from 4340 alloy steel and machined to match the original dimensions. It restores full impact energy and protects the rest of your breaker from premature wear.
Technical Specifications
| Specification | Value |
|---|---|
| Part name | Komatsu JMHB 470V-1 Piston |
| Material | 4340 alloy steel |
| Length | 33.74 in |
| Diameter | 7.28 in |
| Weight | 259.2 lb |
| Compatible breaker | Komatsu JMHB 470V-1 |
| Brand | Merit |
Key Features
- 4340 alloy steel: High toughness and fatigue strength under constant impact.
- Heat-treated surface: Hard, wear-resistant finish that protects seals and the cylinder.
- Precision grinding: Tight tolerances for a smooth, leak-free fit.
- Dimension checked: Every piston is measured and weighed before shipping.
- Ready to install: Direct replacement with no modification needed.
Compatibility
This piston fits the Komatsu JMHB 470V-1 hydraulic breaker. This breaker weighs about 7,560 lb and is used on carriers in the 38–55 US ton class. Please confirm your breaker model and serial number before ordering.
Frequently Asked Questions
What are the dimensions of the Komatsu JMHB 470V-1 Piston? It is 33.74 in long, 7.28 in in diameter and weighs 259.2 lb.
What material is the piston made of? It is made from heat-treated 4340 alloy steel.
Do you ship to the USA? Yes. We ship worldwide, and every piston is securely crated for transport.
How do I order? Add the product to your cart or contact us with your breaker serial number for a quote.
Order Your Komatsu JMHB 470V-1 Piston Today
Keep your breaker running at full power with a durable Merit replacement piston. Browse more breaker parts at Merit Automotive, or explore hydraulic breakers and accessories at Rock Breaker Store.
