Why plants choose Blow Bar Kit
Wrong alloy on demolition feed is a short week. The kit includes alloy choice notes and rotor balance cues.
- Alloy lanes for recycle vs quarry
- Fitment notes for the next shift
| Alloy | Martensitic / Mn options |
|---|---|
| Mass | Balanced set |
| Rotor | Balance cues |
| Circuit | HSI / tertiary |
Which crushers need blow bars
Blow bars do the real work in horizontal shaft impactors (HSI), found everywhere from contract quarries to urban demolition yards. These bars take the full hit from incoming feed, whether that means recycled concrete with tangled rebar, roadwork spoil laced with tar, or abrasive Highveld quartzite. In the tertiary circuit, bars see a steady diet of smaller aggregate, but even there, fines and tramp iron test their mettle. Recycle plants, especially, demand attention to rotor balance and alloy, given the unpredictable feed.
- HSI crushers in aggregate and recycle yards
- Tertiary impact circuits
- Feed with rebar or tramp steel
What’s in a Blow Bar Kit
Ordering a Blow Bar Kit from us means getting a set matched by alloy and mass for your machine’s rotor. We’ll confirm your feed material and circuit, then select the best alloy for your conditions: martensitic steel for recycled material with steel contamination, manganese for primary abrasion, or chrome iron if sharp edge retention is vital. Each kit ships with balance cues and OEM profile notes, so you can check fitment before installation. Lead time is usually straight from local stock for common sizes, otherwise we’ll organise a cast window and keep you posted on timing.
- Alloy matched to your duty
- Mass-matched set for rotor balance
- Profile confirmation on order
Conditions that affect wear in SA
South African conditions challenge every blow bar. Abrasive granite and quartzite on the Highveld will test the work hardening depth of manganese. Near the coast, salt spray accelerates corrosion on exposed faces and mounting bolts, especially where maintenance is less frequent. Recycled feed brings rebar and tramp iron, so martensitic or chrome options are needed to avoid cracking. Dust and fines hammer the bar’s trailing edge, especially when feed is dry and under-choked, so it pays to profile your wear after every campaign. It is all about matching the alloy, mass, and shape to your exact duty.
- Highveld abrasion: quartzite, granite
- Coastal corrosion and salt
- Recycle rebar and tramp metal
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