Impact Crusher Blow Bars Durable OEM & Customized Impactor Blow Bars
| Customization: | Available |
|---|---|
| Warranty: | 1 Year |
| Certification: | ISO 9001:2000 |
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Basic Info.
- Model NO.
- blow bars
- Surface Treatment
- Oxidation,Polishing,Galvanized,as Required
- Manufacturing Process
- Forging,Casting,as Required
- Material
- Alloy Steel,Cast Steel,Cast Iron,as Required
- Name
- Blow Bars
- Model
- Blow Bars 0509
- Transport Package
- in Container
- Specification
- as required
- Trademark
- citichl
- Origin
- China
- HS Code
- 8474209000
- Production Capacity
- 5000 Sets Per Year
Product Description
Blow bars are critical wear-resistant components in impact crushers, designed to crush materials such as limestone, concrete, asphalt, and recycled construction debris. Positioned on the rotor of an impact crusher, they strike incoming materials at high velocity, breaking them into smaller, uniform sizes. These components are engineered to withstand extreme abrasion, impact, and heat generated during crushing operations.
Key Features:
- Material Composition: Manufactured from high-chromium steel, martensitic steel, or ceramic composites to balance hardness and toughness.
- Design Flexibility: Available in multiple profiles (e.g., monolithic, hybrid, or segmented) to optimize crushing efficiency for specific applications.
- Application-Specific Customization: Tailored for primary, secondary, or tertiary crushing stages based on feed size, material hardness, and desired output.
Blow bars are widely used in mining, quarrying, recycling, and construction industries, ensuring reliable performance in harsh operating conditions.
| Parameter Category | Parameter Item | Technical Specifications/Range | Application Scenarios & Features | Notes/Data Sources |
|---|---|---|---|---|
| Material Composition | High Chrome Steel (Cr23-Cr27) | Chromium content 23%-27%, hardness 58-62 HRC | High-wear materials (e.g., granite, quartzite) for primary/secondary crushing; asphalt/concrete recycling. | High wear resistance but low toughness; avoid metal impurities. |
| Martensitic Steel | Hardness 44-57 HRC, impact strength 100-300 J/cm² | Mixed materials (e.g., concrete with rebar); balances impact resistance and wear resistance for medium-wear scenarios. | Optimizes hardness-toughness balance; avoid extreme impact loads. | |
| Ceramic Composite Material | Ceramic layer hardness ≥60 HRC, steel substrate for toughness | Extreme wear environments (e.g., high-silica materials, hard rock); lifespan 3-5× longer than martensitic steel. | Combines ceramic wear resistance with steel impact resistance. | |
| Dimensions & Weight | Length | 300-2,000 mm (customizable) | Compatible with crusher rotors (e.g., NP series, Kleemann MR series). | Adjust based on crusher model and feed size. |
| Weight | 10-500 kg | Varies by material density (High Chrome > Martensitic > Ceramic Composite). | Affects rotor balance; requires symmetrical installation. | |
| Hardness & Toughness | Initial Hardness (HRC) | High Chrome: 58-62; Martensitic: 44-57; Manganese Steel: 20 (hardens up to 50) | Hardness determines wear resistance; toughness determines impact resistance; balance based on material properties. | Manganese steel achieves surface hardness via work hardening; ideal for large blocks. |
| Compatibility | Supported Brands | Kleemann, Hazemag, Terex, Eagle, and custom designs | Provide rotor drawings or OEM part numbers for precise fit. | Hybrid designs available (e.g., ceramic-edged + steel body). |
| Lifespan | Operational Hours | 100-1,000 hours (varies with material hardness, feed size, and crushing stage). | Shorter lifespan in primary crushing (high impact); longer lifespan in secondary crushing (steady wear). | Ceramic composite blow bars can exceed 3,000 hours. |
| Certifications & Testing | Quality Certifications | ISO 9001:2015, CE, ASTM, MSHA | Ensures standardized production and material/mechanical compliance. | Third-party lab tests for hardness, microstructure, and impact strength. |
| Maintenance & Replacement | Wear Limit | Minimum height ≥15-18 mm (measured from the back) | Below this limit risks rotor damage or efficiency loss. | Rotate blow bars symmetrically to avoid uneven wear. |
| Rotor Balance Requirements | Mass difference ≤2% between symmetrical blow bars | Imbalance causes bearing damage or structural vibration. | Pre-installation weighing and torque wrench tightening (200-400 N·m). |
Our blow bars meet stringent international quality and safety standards:
- ISO 9001:2015: Certified for consistent manufacturing processes and quality control.
Third-party lab testing ensures hardness, impact resistance, and microstructure integrity.
1. Packaging
- Standard: Wooden crates with anti-rust coatings and foam inserts to prevent damage during transit.
- Custom: Vacuum-sealed wrapping or steel straps for oversized blow bars.
2. Shipping Options
- Sea Freight: Cost-effective for bulk orders; delivery within 15-45 days.
- Air Freight: Expedited delivery (3-7 days) for urgent requirements.
- Land Transport: Available for regional distribution via certified logistics partners.
All shipments include waterproof documentation (invoice, material certificates, and installation guide).
Step 1: Pre-Installation Checks
- Inspect blow bars for cracks, deformities, or shipping damage.
- Verify compatibility with crusher model and rotor assembly.
Step 2: Rotor Preparation
- Clean rotor grooves to remove debris or old adhesive residues.
- Apply anti-seize lubricant to bolt threads for easier future removal.
Step 3: Mounting Blow Bars
- Align blow bars precisely within rotor grooves.
- Tighten bolts evenly to the manufacturer-specified torque (typically 200-400 Nm).
- Use a torque wrench to avoid under- or over-tightening.
Step 4: Post-Installation Testing
- Run the crusher empty for 5-10 minutes to check for vibrations or misalignment.
- Gradually feed materials to monitor performance and adjust settings if needed.
Safety Note: Always shut off power and lock out the crusher during installation.
1. Superior Quality
- Advanced heat treatment processes (quenching and tempering) enhance wear resistance.
- Proprietary alloy blends extend service life by 20-30% compared to industry averages.
2. Customization Expertise
- Offer CAD-based design services to match unique rotor specifications.
- Provide hybrid blow bars (e.g., ceramic tips for edges, steel base for impact zones).
3. Rapid Production & Delivery
- Maintain large inventories of standard sizes for quick shipments.
- 15-30 day lead time for customized orders.
4. Global Support Network
- Technical advisors available 24/7 to troubleshoot installation or operational issues.
5. Cost Efficiency
- Competitive pricing with volume discounts for bulk purchases.
- Reduced downtime due to extended wear life and reliable performance.
1. Warranty
- 12-month warranty against manufacturing defects (excludes wear under normal operation).
2. Technical Support
- On-site installation guidance and crusher optimization services.
- Remote diagnostics via video calls or data sharing.
3. Training
- Free webinars and manuals for safe installation and maintenance practices.
Q1: How do I choose the right blow bar material? A: Match material hardness to your application:
- High chromium steel for abrasive materials (e.g., granite).
- Martensitic steel for mixed debris (e.g., concrete with rebar).
Q2: Can blow bars be reconditioned? A: Yes, lightly worn bars can be rebuilt via hardfacing or welding. We offer refurbishment services.
Q3: How often should blow bars be replaced? A: Monitor thickness and weight loss. Replace when wear exceeds 30% of the original dimensions.
Q4: Do you provide CAD drawings for custom orders? A: Yes, we share 3D models for client approval before production.
Q5: What causes premature blow bar failure? A: Common causes include improper installation, mismatched material grade, or feeding oversized/uncrushable objects (e.g., metal).
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