Hydraulic breaker chisel for HM-390
Also written HM390, HM 390
- Breaker brand
- Brand to confirm [placeholder: breaker brand for HM-390]
- Fits carriers
- Ask us
3 chisels for HM-390
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Moil · ASI 42CrMo4 Recommended
Part code 86CHI1011
WhatsApp for price- Diameter
- 79 mm
- Length
- Ask us
- Working length
- Ask us
- Weight
- Ask us
Stock: ask us
-
Wedge · ASI 42CrMo4 Recommended
Part code 86CHI1012
WhatsApp for price- Diameter
- 79 mm
- Length
- Ask us
- Working length
- Ask us
- Weight
- Ask us
Stock: ask us
-
Blunt · ASI 42CrMo4 Recommended
Part code 86CHI1010
WhatsApp for price- Diameter
- 79 mm
- Length
- Ask us
- Working length
- Ask us
- Weight
- Ask us
Stock: ask us
| Chisel | Part code | Diameter | Length | Working length | Weight | Stock | Action |
|---|---|---|---|---|---|---|---|
| Moil · ASI 42CrMo4 Recommended | 86CHI1011 | 79 mm | Ask us | Ask us | Ask us | Ask us | |
| Wedge · ASI 42CrMo4 Recommended | 86CHI1012 | 79 mm | Ask us | Ask us | Ask us | Ask us | |
| Blunt · ASI 42CrMo4 Recommended | 86CHI1010 | 79 mm | Ask us | Ask us | Ask us | Ask us |
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Diameters are from our part codes. Length, working length and weight: ask us until we publish them. [placeholder: length, working length and weight for each HM-390 chisel]
We make HM-390 chisels in ASI 42CrMo4 only. ASI 40Cr is made in 135 and 140 mm sizes.
Minimum order, packing and dispatch: ask us.
With every chisel
- Dot-pin serial and model numberMarked on every chisel
- Heat numberTraces the steel back to its mill certificate
- That heat's molybdenum %[placeholder: confirm we can share the heat Mo % from the mill certificate]
We have our own hardness-testing machines in the plant. ASI 40Cr: serial and heat number.
- Headabout 45 HRCTakes the piston blow without cracking
- Middleabout 50 HRCTough body that resists bending
- Tipabout 55 HRCHard working end that resists wear
Which grade for HM-390?
| ASI 42CrMo4 Recommended | ASI 40CrEconomy | |
|---|---|---|
| Steel | SteelCr-Mo alloy steel to 42CrMo4 | SteelCr alloy steel, 40Cr |
| Heat treatment | Heat treatmentHardened, tempered and zone tempered: tip about 55, middle about 50, head about 45 HRC | Heat treatmentHardened and tempered. Zone tempering to be confirmed |
| Traceability | TraceabilityDot-pin serial and heat number | TraceabilitySerial and heat number |
| 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.
The rest of the HM-390 kit
Part codes and sizes as written in our records. Ask us if you are not sure which one fits.
-
Chisel lock
Part code: ask us
-
Upper bush
Part code 52RBU1030 · 80 X 110 X 360
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Through bolts
Part code: ask us
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Piston
Part code: ask us
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Stop pins and support bolts
Part code: ask us