Rebar blade specifications and dimensions
| NO. | Product Name | Specification Dimensions (length x width x height/thickness) ） | Material | Remarks |
| 1 | rebar blade size | 78*78*17 mm | 9crsi，SKD-11，H13 | Customization services are available; we can manufacture according to your drawings, with a minimum order quantity of 2 piece. |
| 2 | 80*80*17 mm |
| 3 | 80*80*30 mm |
| 4 | 83*83*16 mm |
| 5 | 83*83*26 mm |
| 6 | 83*83*26 mm |
| 7 | 90*90*20mm |
| 8 | 90*90*26mm |
| 9 | 100*100*20mm |
| 10 | 100*100*30mm |
| 11 | 110*110*20 mm |
| 12 | 100*30*75 mm |
| 13 | 85x65x30 mm |
| 14 | Handheld rebar cutting machine blade | 26×20×10 mm |
| 15 | 30×24×11 mm |
| 16 | 36×28×14 mm |
| 17 | 40×30×15 mm |
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I will provide you with usage suggestions based on material selection, equipment matching, cutting material, and manufacturing process:
rebar blade Material Selection
The blade material directly determines its hardness, toughness, and service life. Choose the material according to your cutting needs:
H13 Material
Currently the mainstream high-quality blade material on the market, possessing both extremely high wear resistance and toughness, with outstanding resistance to thermal cycling. Even during long-term, high-intensity continuous cutting, it is not prone to deformation or chipping, making it suitable for large-scale processing of high-strength rebar.
Cr12MoV Material
High-hardness, high-wear-resistance tool steel. Its hardness far exceeds that of ordinary alloy blades, and it can handle the cutting needs of high-hardness cold-rolled rebar. Note that its toughness is relatively weaker; it is recommended to avoid using it in high-impact, large-gap cutting conditions.
9CrSi Material
An economical and practical choice. It has good hardenability and machinability, suitable for cutting ordinary medium- and low-strength rebar, and is widely used in small and medium-sized projects.
Matching Mechanical Specifications (Customized by Size)
Shape Matching: Common blade shapes are square (four sides usable) and rectangular. Square blades allow for the rotation of four cutting edges, significantly extending their service life, suitable for large-scale processing scenarios; rectangular blades are mostly single-sided or double-sided, suitable for small-tonnage cutting machines.
Size Matching: Different tonnage cutting machines (such as GQ40, GQ50, GQ60) have specific standards for blade thickness, length, width, and bolt hole spacing. Selection must strictly follow the equipment's instruction manual.
Different types of rebar have significantly different physical properties, so blade selection needs to be based on the material characteristics:
Ordinary Round Steel: Low hardness and low cutting resistance. 9CrSi or Cr12MoV materials are sufficient, meeting basic cutting needs while controlling costs.
High-Strength Ribbed Rebar : High hardness, and the ribbed surface structure easily wears down the blade. It is recommended to use H13 material. Its excellent wear resistance and toughness can effectively reduce the risk of chipping, making it suitable for high-strength continuous cutting.
Manufacturing Process
Blades processed through full grinding and vacuum heat treatment are preferred. These blades have a uniform hardness distribution, good edge retention, and are less prone to chipping or dulling during cutting.
Custom rebar blades
Our blades, through optimized hardening depth and toughness, address the common industry problem of brittle fracture when cutting high-strength rebar
Blade Metal Materials Grade Correspondence Table
Base Grade | Steel Category | Chinese Standard GB/T 1299 | American Standard ASTM | German Standard DIN (W-Nr.) | Japanese Standard JIS |
H13 | Hot Work Die Steel | 4Cr5MoSiV1 | H13 | 1.2344 | SKD61 |
Cr12MoV | Cold Work Die Steel | Cr12MoV |
| 1.2601 | SKD11 |
9CrSi | Alloy Tool Steel (Cutting Tool Steel) | 9CrSi |
| 1.2108 |
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H13 blade material is really good at resisting wear and has great toughness. Even when used for long periods of high-intensity cutting, it stays stable—no deformation, no chipping at all. It’s the top pick for international trade because it doesn’t need to be replaced as often, which cuts down a lot on transportation costs and customs duties compared to other materials.
rebar blades drawing
Installation location of the rebar cutting blade
Long-life rebar blades 2026
Rebar Cutting Machine Quick Blade Replacement: 5 Safety Steps
Power off and stop completely → Confirm no pressure → Standard disassembly and assembly → Precise adjustment → Test run verification. Avoid pressurized and live electrical operation throughout the process to prevent blade pinching injuries and accidental equipment startup risks.
Step 1: Power off and lock out, completely stop the machine
Turn off the main power supply of the cutting machine, unplug the power cord/switch off the circuit breaker; manually rotate the equipment flywheel to confirm that the blade holder has no inertial movement and is completely stationary, preventing accidental equipment startup.
Step 2: Release pressure, disassemble protection
Loosen the unloading valve of the equipment's hydraulic system (for hydraulic models), completely release the hydraulic pressure inside the blade holder to prevent the blade holder from suddenly rebounding; remove the safety guard and fixing clips at the blade, and clean up rebar scraps and debris between the blade holder and the blade to ensure unobstructed disassembly and assembly space.
Step 3: Standard disassembly, gentle handling
Use a special wrench to loosen the blade fixing bolts (disassemble in a diagonal sequence to prevent deformation of the blade holder), strictly avoid directly striking the blade/bolts with a hammer; during disassembly, steadily support the blade with your hand and place the old blade properly in a non-slip, non-impact area.
Step 4: Precise installation, leveling and gap adjustment
Smoothly fit the new blade to the positioning surface of the blade holder, confirm that the blade installation direction (cutting edge facing the shearing side) is correct, and gradually tighten the fixing bolts in a diagonal sequence (even torque to prevent blade misalignment); adjust the gap between the moving and stationary blades, the conventional rebar cutting gap is controlled at 0.1~0.3mm, a gap that is too large is prone to material jamming, and a gap that is too small is prone to blade wear.
Step 5: Reset protection, no-load test run
Reset and lock the safety guard; after switching on the power, jog the equipment 2-3 times without load, check that the blade holder runs smoothly and the blade is free from jamming/abnormal noise, and after confirming that the shearing action is normal, then perform a rebar test cut. If the test cut is successful, it can be used normally.
FAQ
Question 1: What are the main material options for our rebar blade?
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.