The High Chrome Blow Bar is a critical wear part used in impact crushers. It is installed on the rotor and crushes materials through high-speed impact force generated during rotation. Its performance directly affects crushing efficiency, final product shape, and service life of the crusher.
Our High Chrome Blow Bar is manufactured from Cr26 high-chromium alloy through integral precision casting. Combined with an optimized structural design and advanced heat treatment process, it delivers excellent impact resistance, anti-chipping performance, uniform wear behavior, and superior aggregate shape. It is an ideal replacement part for PF series and other mainstream impact crushers worldwide.
Key Features
Applications
Parameter
FAQ
Key Purchasing Benefits for Overseas Customers
Improved aggregate quality
Produces well-shaped cubic particles with low flakiness content (≤10%), fully meeting European and North American construction aggregate standards.
Higher crushing efficiency
Optimized geometry and impact angle improve crushing efficiency by more than 15% compared to conventional blow bars.
Reduced maintenance cost
Extended service life and longer replacement intervals significantly reduce labor cost and downtime losses.
Perfect OEM compatibility
Manufactured strictly according to original drawings, ensuring 1:1 interchangeability with OEM parts without any modification to the equipment.
Stable supply capability
Factory-based production with annual capacity exceeding 5,000 tons, ensuring reliable bulk supply for long-term projects.
OEM / ODM Customization Services
Structural optimization
Blow bar length, thickness, and striking face geometry can be customized based on material characteristics and crushing requirements.
Surface treatment options
Shot blasting, painting, or anti-corrosion coatings are available to improve appearance and corrosion resistance.
Solutions to Common Customer Problems
Problem: Chipping or breakage of blow bars causing poor product quality
Solution: High-grade high-chromium alloy combined with advanced heat treatment significantly improves impact toughness and bending strength, effectively eliminating chipping and fracture issues.
Problem: Uneven wear and localized excessive abrasion
Solution: Optimized equal-strength design ensures uniform wear distribution and extended service life.
Problem: Poor particle shape with high flakiness content
Solution: Improved impact angle and crushing chamber interaction ensure full material fragmentation and better final shape.
Problem: Installation mismatch with rotor system
Solution: Strict dimensional control with 1:1 reproduction of OEM specifications ensures precise fit and easy installation.
Problem: High cost and long lead time of imported parts
Solution: Cost reduced to approximately 1/3–1/2 of imported brands, with standard models in stock and customized parts delivered within 10 days.
Highway aggregate production (low flakiness crushed stone)
Ready-mix concrete plants (aggregate production for concrete)
Construction waste recycling (concrete, bricks, slabs recycling)
Cement clinker crushing
Limestone quarry crushing and grading
| Material Grade: | High chromium alloy with Mo, Ni, Cu alloying elements |
| Surface Hardness: | HRC 60–65, uniform from surface to core |
| Impact Toughness: | ≥10 J/cm², suitable for high-impact conditions |
| Bending Strength: | ≥600 MPa, resistant to deformation and fracture |
| Service Life: | 4–6 times that of standard high-manganese steel blow bars (based on limestone conditions) |
| Dimensional Tolerance: | Length ±1 mm, width ±0.5 mm, thickness ±0.5 mm |
| Casting Process: | Lost foam precision casting with smooth surface and no burrs |
| Heat Treatment: | 980°C quenching + 250°C tempering for optimized hardness and toughness balance |
Q1: What materials can High Chrome Blow Bars crush?
A: Suitable for materials with compressive strength up to 350 MPa, including limestone, dolomite, coal gangue, and concrete blocks. For extremely hard materials such as basalt or granite, bimetal composite blow bars are recommended.
Q2: What is the service life of a set of blow bars?
A: Under standard limestone crushing conditions, service life is typically 1–2 months. Actual lifespan depends on plant capacity and material hardness.
Q3: When should blow bars be replaced?
A: When wear reaches approximately one-third of the original thickness, they can be reversed for continued use. Replacement is required when both sides are worn to one-third to avoid rotor damage.
Q4: What should be considered during replacement?
A: Ensure all blow bars on the rotor are weight-balanced to prevent vibration. All fixing bolts must be tightened and regularly inspected.
Q5: Are your blow bars interchangeable with OEM parts?
A: Yes. They are manufactured strictly according to original drawings with identical dimensions and mounting interfaces, allowing direct replacement.
Zhejiang Linchuan Machinery Manufacturing Co., Ltd.
Factory Scenery