SB81 Straight Hydraulic Breaker 140mm Chisel 20-25 Ton Excavator Heavy Duty Rock Breaker

Product Features

• Straight integrated cylinder design, compact structure, easy daily maintenance
• 140mm 42CrMo forged chisel, high hardness, for hard rock breaking
• Nitrogen energy storage system, boosts instantaneous impact force
• Imported sealing kits, high temperature resistant, prevent oil leakage
• Standard mounting bracket, fits most 18-26 ton excavator brands
• Stable impact frequency, low failure rate, long continuous working
• Complete set delivery, includes chisel, pins and full accessories

Working Principle

Excavator supplies high-pressure hydraulic oil to the breaker. Hydraulic oil pushes the piston up to compress nitrogen in the accumulator. Nitrogen releases energy to drive the piston down rapidly, striking the chisel to generate impact force. The chisel transfers energy to rock/concrete to finish breaking. Hydraulic-nitrogen cycle repeats for continuous striking.

Product Advantages

✅ Straight Compact Structure: Small footprint, flexible for narrow space construction

✅ Powerful Impact: Nitrogen-hydraulic system, high rock breaking efficiency

✅ Zero Leakage: Imported multi-layer seals, reduce oil leakage failure

✅ Easy Maintenance: Simple internal structure, convenient inspection and parts replacement

✅ Wide Compatibility: Standard interface, fits most 18-26 ton excavator brands

✅ Cost-Effective: Factory direct supply, competitive wholesale price

Company Service

We are a professional manufacturer and exporter of excavator hydraulic breakers. We supply SB81 straight breaker, full SB series breakers, chisels and related spare parts. Products meet industry standards with sufficient stock for fast global shipping. We support sample orders, small batch trials and bulk wholesale. Provide pre-sales model matching, installation guidance and long-term after-sales warranty.

FAQ

Q1: What excavator tonnage fits SB81 140mm straight breaker?

A1: It fits most 20-25 ton crawler excavators. Confirm excavator flow and pressure before purchase.

Q2: What's the difference between straight type and triangular breaker?

A2: Straight type has compact size, better for narrow space work; triangular type has higher rigidity for heavy impact primary breaking.

Q3: Does this breaker set include the 140mm chisel?

A3: Yes, complete set includes standard 140mm 42CrMo chisel, mounting pins and necessary wearing parts.

Q4: Can it break hard granite and basalt?

A4: Yes, with strong impact energy and 42CrMo chisel, it is suitable for medium-hard rock breaking.

Q5: Do you support bulk wholesale for mining fleets?

A5: Yes, we support bulk orders for mining companies and repair shops, with favorable price and reliable after-sales support.