Rebar Cutter Replacement Blades / Rebar Cutting Knives

On busy reinforced concrete construction sites, rebar cutters are key tools. A good cutter needs more than a strong hydraulic motor—it needs high-quality replacement blades. Dull or low-quality blades slow down work, damage expensive equipment, cause more downtime, and put workers at risk. Using top-quality replacement blades keeps work steady, cuts maintenance costs, and keeps your project on track. Below is a simple guide to rebar cutter replacement blades.

Blade material decides how hard, tough, and long-lasting the blade is. Pick a material based on what you need to cut:

Blades must fit your rebar cutter’s size and shape to work well and avoid damage. Here’s what to check:

Different rebar types have different properties—choose blades that match:

Choose blades made with full grinding and vacuum heat treatment. These blades have even hardness, stay sharp longer, and don’t chip or dull easily—so they work well for longer.

Worn blades can damage your cutter’s hydraulic piston or motor. Replace blades if you see these signs:

Don’t let a cheap blade break an expensive machine. Stock high-quality rebar cutter replacement blades and follow this guide to keep your team working and your equipment in good shape. We make blades that fit brands like Makita, Hitman, BN Products, and many CNC stationary shears, and we can customize them for your project.

Question 1: What are the main material options for our rebar cutter blades?

Based on different working conditions and budget requirements, we offer three general industrial-grade alloy steel materials:

9CrSi (Alloy Tool Steel): An economical choice. It has good hardenability and machinability, suitable for cutting ordinary medium-to-low strength rebar, and is widely used in small and medium-sized projects.

Cr12MoV (Cold Work Die Steel): High-end wear-resistant type. High carbon and high chromium content, after heat treatment, it has excellent wear resistance, making it an ideal choice for continuous cutting of high-strength rebar. Its service life is much longer than 9CrSi.

H13 (Hot Work Die Steel/Red Hard Steel): High toughness and high wear resistance. It exhibits excellent resistance to chipping and thermal stability in rebar cutting applications, especially suitable for high-speed production lines or online cutting of hot-rolled rebar, and cutting of ultra-thick rebar and composite materials of scrap rebar.

Question 2: Why do my blades often chip? Is it a material problem?

Chipping is usually caused by the following factors:

Insufficient toughness: Using ultra-hard but low-toughness materials to cut large-diameter or ultra-hard rebar can easily lead to brittle fracture. In this case, we recommend switching to H13 material, as its excellent toughness can effectively absorb impact forces.

Improper clearance: Too large or too small a gap between the upper and lower blades will lead to uneven stress, resulting in chipping.

Insufficient heat treatment: Internal stress is not completely eliminated. All our blades use vacuum heat treatment technology to ensure uniform hardness from the inside out, greatly reducing the chipping rate.

Question 3: What is the biggest performance difference between 9CrSi and Cr12MoV?

Wear resistance: Cr12MoV has significantly better wear resistance than 9CrSi. Under the same working conditions, the number of cuts for Cr12MoV is usually 2-3 times that of 9CrSi.

Cost: 9CrSi is more cost-effective, suitable for projects sensitive to initial purchase costs; although the unit price of Cr12MoV is slightly higher, its lower replacement frequency results in a lower overall cutting cost per ton of rebar.

Question 4: Which material is recommended for high-strength deformed rebar (e.g., HRB500E) or thick rebar?

For high-strength or ribbed rebar, we strongly recommend H13:

If you are facing extremely high operating intensity and are concerned about downtime due to blade chipping, choose H13. Its impact fatigue resistance is top-notch in the rebar processing industry.

Question 5: Can you customize non-standard size blades according to drawings?

Yes. We understand that blade specifications vary among different equipment brands (e.g., from Italy, Germany, or China). We are equipped with a full set of CNC machining equipment, and you only need to provide the following information:

Detailed drawings (including length, width, thickness, and hole dimensions).

Material requirements (9CrSi, Cr12MoV, or H13).

Specifications of the workpiece to be processed (rebar diameter and strength grade).

We can provide a 1:1 precise customized solution.

Question 6: How to maintain the blades to extend their service life?

Regular rotation: Our blades are usually designed with 4 or 8 cutting edges. Please rotate the blade promptly when one cutting edge becomes dull.

Tighten bolts: Ensure the blades are securely installed. Any slight looseness will cause destructive impact during the cutting process.

Control the gap: Adjust a reasonable blade gap according to the rebar diameter, usually about 10% of the rebar diameter.