Boom rock breaker JMHB-V

hydraulicfor excavators

Overview
High productivity with low cost per ton. The JMHB-V hydraulic breaker fully modulates impact force and frequency to match application requirements, minimizing wasted energy and increasing operating efficiency. An innovative energy-recovery valve further improves overall efficiency.

Key highlights

• 100% hydraulic operation
• Fully automatic variable speed
• High production ratio across applications
• Energy-recovery valve to recuperate energy and prevent overflow

Features and benefits

• Designed for long life — Mounted automatic lubrication protects against dust and debris, extending breaker life (standard on many models).
• Equipped for dependability — Inspection kit included to support routine maintenance (standard on all models).
• Less vibration — Rubber/poly suspensions on JMHB-H and JMHB-V models, or shock-dampening box bracket on other models, reduce vibrations transmitted through the boom.
• Noise reduction — Fully enclosed sound-dampening housings lower noise compared with open-style breakers.
• Standard features — Automatic greasing, advanced blank-firing protection, swivel hose couplings and heavy-duty housing.
• Highly adaptable — Suitable for demolition, mass excavation and secondary breaking.
• High operating efficiency — Fully modulates impact force and frequency with up to 16 working positions to match conditions and minimize wasted energy.
• Innovative energy-saving valve — Recuperates energy and prevents overflow to improve efficiency.

Resources

• Download brochure (EN-VH Series brochure PDF available in product resources)
• Press release on the expanded hydraulic breaker range

Carriers & compatibility

• Komatsu carriers: PC210 - PC490
• Machine class (st): 19.8 - 55.1
• Machine class (t): 18 - 50
• Operating weight (kg): 1 450.0 - 3 430.0
• Operating weight (lbs): 3,197 - 7,561.9

Technical specifications

• Product family / series: JMHB (JMHB-V variant)
• Power type: 100% hydraulic
• Automatic variable speed: Fully automatic, variable-speed operation
• Working positions: Up to 16 working positions
• Energy recovery: Innovative energy-recovery valve (recuperates energy and prevents overflow)
• Standard protection/features: Automatic greasing, blank-firing protection, swivel hose couplings, heavy-duty housing
• Vibration reduction: Rubber/poly suspensions (JMHB-H and -V) or shock-dampening bracket (other models)
• Applications: Demolition, mass excavation, secondary breaking