High Chrome Impact Crusher Blow Bars – HRC 60–65

Product Overview

Qirun supplies high chrome blow bars for horizontal shaft impact (HSI) crushers used in mining, quarrying, and aggregate production.

Available in Cr26, Cr27, and Cr27Mo2 high chromium alloys, these wear-resistant castings feature a published hardness range of HRC 60–65.

Designed for crushing applications where abrasive wear is a major concern, our blow bars help protect rotor striking surfaces during repeated rock impact. Qirun supports OEM replacement manufacturing with custom blow bar profiles, mounting dimensions, and material specifications based on customer drawings and crusher requirements.

Technical Specifications

The hardness range is based on the published product description. Actual hardness, alloy chemistry, dimensions, and equipment compatibility must be confirmed for each material grade and approved technical specification.

Key Features of High Chrome Blow Bars

1. HRC 60–65 High Hardness

Qirun's high chrome blow bars have a published hardness range of HRC 60–65.

High chromium cast alloys contain hard chromium carbide phases within their metallic structure. These carbides contribute to abrasion resistance during repeated contact with crushed rock and mineral particles.

The final hardness depends on alloy composition, heat treatment, and casting requirements.

2. High Abrasion Resistance

High chrome blow bars are suitable for selected crushing conditions where abrasive material contact is a major source of wear.

Their hard working surfaces help resist material loss from repeated contact with abrasive rock particles.

Compared with tougher steel alternatives, high chromium alloys emphasize abrasion resistance rather than tolerance of severe impact.

3. Cr26, Cr27 and Cr27Mo2 Material Options

Qirun lists three high chromium material grades for this product.

Each grade can be evaluated according to the required alloy composition, hardness, and crushing conditions.

Final material specifications should follow the agreed purchase requirements and manufacturing drawings.

4. Custom Blow Bar Profiles

Impact crusher blow bars must match the rotor's installation and locking configuration.

Qirun supports manufacturing according to customer drawings and dimensional specifications.

Customization requirements may include:

• Overall length, width, and height

• Working face geometry

• Rotor contact and locking surfaces

• Casting weight and dimensions

• Material grade and heat treatment

• Machining of specified installation surfaces

5. OEM Replacement Blow Bars

Qirun supports customized replacement manufacturing for worn impact crusher blow bars.

Customers can provide their crusher model, original part number, technical drawing, or existing component dimensions for manufacturing review.

Correct dimensional specifications are essential for safe installation and replacement compatibility.

High Chromium Blow Bar Material Options

Cr26, Cr27, and Cr27Mo2 are high chromium alloy specifications used for wear-resistant casting requirements.

The material composition and heat treatment influence the final hardness, carbide structure, toughness, and abrasion resistance.

These grades should not be considered interchangeable without reviewing the required material specification and crusher operating conditions.

High Chrome vs. Martensitic Blow Bars

Different impact crusher blow bar materials offer different performance characteristics.

High chrome blow bars are not suitable for every crushing application.

Where feed materials contain large uncrushable objects, frequent rebar, or severe impact loads, tougher materials may be required.

OEM High Chrome Blow Bar Manufacturing

Qirun provides custom casting and replacement manufacturing support for high chromium impact crusher blow bars.

Our services can include:

• Cr26 / Cr27 / Cr27Mo2 material specifications

• Custom blow bar dimensions

• Rotor profile and locking feature requirements

• Manufacturing based on technical drawings

• Machining of specified contact surfaces

• Heat treatment according to alloy requirements

• Inspection according to agreed specifications

Information Required for a Quotation

Please provide:

1. Impact crusher manufacturer and model

2. Original blow bar part number

3. Technical drawing or component dimensions

4. Required material grade

5. Specified hardness, if applicable

6. Feed material and operating conditions

7. Required order quantity

This information helps Qirun review manufacturing feasibility and replacement requirements.