Shata - OEM Foundry for Blow Bars
Shata Machinery is a professional casting foundry focusing on OEM custom blow bars for impact crushers, with two mainstream product lines: high manganese steel blow bars and high chrome cast iron blow bars.
We provide full drawing & sample-based customized service. Equipped with complete in-house casting production lines and a standardized ISO 9001 Complete Quality Management System, we offer transparent factory-direct pricing and full one-stop technical support for global crusher manufacturers.
Our advantages:
✅Full drawing / sample customization production
✅Full-process quality testing
✅Cost-effective OEM factory supply
✅One-stop technical after-sales support.
About Our Impact Crusher Blow Bars
Blow bars, also known as impact hammers, are core wear-resistant spare parts mounted on the crusher rotor, acting as striking blades to crush raw stone materials.
Our blow bars:
✅Long Wear Service Life
✅Strong Shock & Fracture Resistance
✅Optional Wear Materials - High Chrome & High Manganese
✅No Casting Defect
✅Superior Material
✅ISO 9001 Certified
Technical Specifications
| Item | Customizable Specifications |
| Product Name | Blow bar, impact hammer |
| Optional Materials | High Chrome Cast Iron; High Manganese Steel; Custom composite wear-resistant alloys |
| Applicable Crusher Series | PF, PFW, NP impact crusher, all world brand impact crusher rotor models per drawing/sample |
| Single Piece Weight | 5kg – 1000+kg, based on drawings |
| Wear Layer Thickness | As drawings to extend service life |
| Working Hardness | HRC 58–65 for High Chrome; High Manganese: HB 220–260 before work hardening, HB300-800 after work hardening |
| Impact Toughness | Customized for heavy impact or high abrasion working conditions |
| Mounting Method | Bolt fixing, wedge locking, custom mounting hole layout, clamp structure per rotor design |
| Surface Treatment | Anti-rust primer coating; red, yellow, blue, grey, black and specified colors available |
| MOQ | 200Kg |
| Production Tolerance | ±0.5–1mm for casting dimensions; Strict tolerance control for precision installation |
Working Principle
Blow bars are securely fixed to the rotor and rotate at high speed. They violently strike incoming stone and hurl materials against the impact liners inside the crusher chamber. Rebounded rocks collide with blow bars repeatedly, undergoing continuous impact fragmentation to form qualified sand and gravel aggregates.
Customizable in Various Shapes
- Rectangle long straight bar: Simple structure, easy to cast; Single-sided wear.
- Curved: Arc outline outside, and straight line inner side, fan-shapped; arc working surface has bigger contacting area, uniform wear, and high crushing efficiency. It is more used on european PFW, NP series crushers
- T-shape: Wider wear-resistant surface, excellent impact resistance, both sides are workable. T-shape blow bars are suitable for large, hard rock, heavy-duty impact crushers.
- H-shape: wider at two ends, and thinner at the middle, light weight with enough strength. H-shape blow bars are designed for high-speed, concrete recycling, soft or medium hard material impact crushers.
- Axe-shape: Blow bar looks like an axe, wide and thick on the top. Axe-shape blow bar has a strong feeding capacity, and high impact toughness, is ideal for impact crushers that handling large size, hard rocks.
Materials: High Chrome Vs High Manganese
Raw Material Options
- High Chrome Cast Iron (standard Cr26/Cr28 wear-resistant alloy or others as required)
- High Manganese Steel (Mn13, Mn18... high impact alloy)
- Custom composite alloy blow bars per project requirements
| Item | High Chrome | High Manganese |
| Typical material grades | Cr26, Cr28 | Mn13, Mn18Cr2 |
| Key features |
High hardness Extremely strong wear resistance Long service life Weaker impact resistance |
The greater the impact, the harder it becomes Ultra high toughness, not easy to break High impact resistance Weaker wear resistance with soft and light-wear conditions |
| Hardness | HRC58-65 |
HB180~220 without impact Over HRC50 after impact because of surface layer cold work hardening |
| Applicable blow bar shape | Rectangle long straight bar, Curved | T-shape, Axe-shape |
| Applicable processing material | Limestone, bluestone, dolomite, shale, coal gangue, construction waste, concrete crushing (soft material, medium soft material, recycled aggregate) | Granite, basalt, river pebbles, hard ores, large raw stones and hard rocks |
| Casting Process | EPC(Evaporative pattern casting or lost foam casting), sand casting | EPC(Evaporative pattern casting or lost foam casting), sand casting |
| Heat Treatment | Quenching & Tempering | Water toughening (Solution + water cooling_ |
FAQ
Q: Are your high chrome & manganese blow bars reliable for heavy crushing work?
A: We adopt a fully standardized inspection process and have complete test reports to ensure production quality and eliminate potential safety hazards caused by substandard castings.
Q: What crusher models can your blow bars be compatible with?
A: We do fully customized production strictly based on your drawings. No matter standard mainstream PF, PFW and NP series crushers, or non-universal special crusher models, we can tailor-make matching blow bars to perfectly fit your rotor mounting structure.
Q: What's the service life difference between high chrome and high manganese blow bars?
A: Depends on raw material hardness and feeding lump size
Q: How to prevent blow bar fracture and abnormal vibration during crushing?
A: Production: control matched alloy material, adequate wear layer thickness and precise dimensional tolerance Regularly maintaining: inspect blow bars and rotor fasteners on site, replace severely worn parts timely, avoid oversized hard feed to stop vibration and fracture.
Q: Do you supply stable long-term bulk supply for quarry spare parts distributors?
A: We own complete casting and heat treatment production lines with stable monthly output, support long-term framework orders and tiered bulk discount prices to guarantee continuous spare parts supply for dealers.
Q: Can your blow bars work for concrete construction waste recycling?
A: Our high chrome blow bars are specially suitable for concrete recycling with strong anti-abrasion performance.
Q: Is customized brand logo printable on blow bar surface?
A: No problem. We can also cast brand logo on surface, ensuring not drop off after abrasion
Our Blow Bar Marketing Manager
Marina Zhang
marina@shatamachinery.com
+86 183 3210 9035
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