Through bolts
- Before ASI
- 300–400 h
- With ASI
- 2,000+ h
Working hours, as reported by a customer
Hydraulic breaker chisels, heat-treated in our own plant
ASI 42CrMo4 and ASI 40Cr chisels for breakers on 5 to 60-tonne carrier excavators. Every chisel is serial-numbered. Every ASI 42CrMo4 chisel comes with its hardness report.
[placeholder: photo, packed ASI chisels ready to dispatch, in our Ambala plant]
- In-house heat treatmentCarburising, induction hardening, tempering and segment tempering
- Zone hardness 55 / 50 / 45 HRCTip, middle, head on ASI 42CrMo4
- Serial and heat numberMarked on every chisel
- Making parts in AmbalaSince 2012
Chisels
Popular chisel models
- SB-43 Brand to confirm Diameter 74 mm Moil, Wedge, Blunt See 3 chisels
- HM-360 Brand to confirm Diameter 69.4 mm Moil, Wedge, Blunt See 3 chisels
- SB81 Soosan Diameter 138.7 mm Moil, Wedge, Blunt See 6 chisels
- HM-380 Brand to confirm Diameter 74.4 mm Moil, Wedge, Blunt See 3 chisels
- SB-40 Brand to confirm Diameter 68 mm Moil, Wedge, Blunt See 3 chisels
- Demo 210 Brand to confirm Diameter 133.6 mm Moil, Wedge, Blunt See 6 chisels
- Saga 225 Brand to confirm Diameter 73.5 mm Moil, Wedge, Blunt See 3 chisels
- HM-390 Brand to confirm Diameter 79 mm Moil, Wedge, Blunt See 3 chisels
Grades
Which grade for your breaker?
| ASI 42CrMo4 Recommended | ASI 40CrEconomy | |
|---|---|---|
| Traceability | TraceabilitySerial and heat number, plus hardness report by segment | TraceabilitySerial and heat number. Hardness report to be confirmed |
| Best for | Best forHard rock, quarries, long shifts | Best forSofter rock, occasional use, tight budgets |
| Sizes | SizesFull range, for breakers on 5 to 60-tonne carrier excavators | Sizes135 and 140 mm only |
Cost per working hour = price ÷ hours of useful life
If an ASI 42CrMo4 chisel lasts longer than the price difference, it costs less per working hour. Ask us to work it out for your breaker.
Results
Hours before and after ASI
What customers report for our breaker and excavator parts. We started making chisels to our current standard in October 2026, so chisel hours will follow.
Breaker bushes
- Before ASI
- 500 h
- With ASI
- 1,800+ h
Working hours, as reported by a customer
Excavator pins
- Before ASI
- 5–6 months
- With ASI
- 18–22 months
Service life, as reported by a customer
Customer names shown only with their permission. [placeholder: permission to name Navdeep Hydraulics, Shivam Engineering and Shiv Shakti Engineering Workshop]
All parts
Other parts we make
MSME ZED Silver · Exhibited at EXCON (2019, 2023, 2025), Earthcon Hyderabad (2022, 2025), bauma CONEXPO India 2024, National Heavy Equipment Show Canada 2024 and Big 5 Dubai 2025 · See the proof