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In the demanding world of construction, a Bar Cutter Blade is more than just a piece of metal; it’s the heart of your cutting efficiency. Using inferior blades leads to frequent downtime and increased costs per cut.
| NO. | Product Name | Specification Dimensions (length x width x height/thickness) ） | Material | Remarks |
| 1 | blade size | 78*78*17 mm | 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*30mm | |||
| 4 | 83*83*16 mm | |||
| 5 | 83*83*26 mm | |||
| 6 | 83*83*26 mm | |||
| 7 | 90*90*20mm | |||
| 8 | 90*90*26 mm | |||
| 9 | 100*100*20mm | |||
| 10 | 100*100*30 mm | |||
| 11 | 110*110*20 mm | |||
| 12 | 100*30*75 mm | |||
| 13 | 85x65x30 mm | |||
I will provide you with usage suggestions based on material selection, equipment matching, cutting material, and manufacturing process. Below is a detailed and easy-to-understand guide for bar cutter blades, including related cutting tool knowledge, tool steel options, and practical usage tips.
The blade material directly determines its hardness, toughness, and service life. Choose the right material based on your actual cutting needs—this ensures a clean cut and longer blade service life.
C: 0.32–0.45%Cr: 4.75–5.50%Mo: 1.10–1.75%Si: 0.80–1.20%Mn: 0.20–0.60%V: 0.80–1.20%P, S ≤ 0.030%Balance Fe
Medium C: Balances strength and high toughness to avoid chipping.
Cr + Mo + V: Greatly improves heat resistance, hot cracking resistance and impact strength.
Si: Improves high-temperature strength and temper stability.
Hardness: HRC 50–55
Excellent toughness, impact resistance and chipping resistance,outstanding heat resistance and thermal fatigue resistance.
Application: Hot shear blades, thick blades, and high-impact rebar cutting conditions.
H13 is a hot work steel and currently the mainstream high-quality blade material on the market. It has both extremely high wear resistance and toughness, with excellent resistance to thermal cycling (suitable for high heat environments). Even during long-term, high-intensity continuous cutting, it won’t easily deform or chip. This material is ideal for large-scale processing of high-strength rebar, and it’s also suitable for hot work tooling scenarios that require durability.
Cr12MoV is a high-hardness, high-wear-resistance tool steel (containing chromium molybdenum for enhanced performance). Its hardness is much higher than that of ordinary alloy blades, so it can handle the cutting needs of high-hardness cold-rolled rebar. Note that its toughness is relatively weak—avoid using it in high-impact, large-gap cutting conditions to prevent chipping.
9CrSi is an economical and practical tool steel choice. It has good hardenability and machinability, making it suitable for cutting ordinary medium- and low-strength rebar. It’s widely used in small and medium-sized construction projects, as it meets basic cutting needs while keeping costs low.
Choosing a blade that matches your cutting equipment is key to stable performance—this applies to all cutting tool types, including bolt cutters, rebar cutters, and angle grinders (for auxiliary cutting).
Common blade shapes are square (four sides usable) and rectangular:
- Square blades: You can rotate the four cutting edges, which greatly extends their service life. They are suitable for large-scale processing scenarios.
- Rectangular blades: Most are single-sided or double-sided, suitable for small-tonnage cutting machines (not for heavy-duty cutting).
Different tonnage cutting machines (such as GQ40, GQ50, GQ60) have specific standards for cutting blade thickness, length, width, and bolt hole spacing. You must strictly follow the equipment’s instruction manual when selecting a blade—incorrect size matching will affect cutting effect and even damage the machine.
Different types of rebar have very different physical properties, so you need to choose the blade according to the material characteristics. For other cutting needs (such as cutting metal with a cutting torch), similar material-matching principles apply.
Ordinary Round Steel: Low hardness and low cutting resistance. 9CrSi or Cr12MoV materials are enough—they meet basic cutting needs and help control costs.
High-Strength Ribbed Rebar: High hardness, and the ribbed surface is easy to wear the blade. It’s 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 (a heavy duty cutting scenario).
When choosing a tool to cut rebar (or any metal), the blade’s manufacturing process is crucial.
These blades have uniform hardness distribution, good edge retention, and are not easy to chip or dull during cutting—ensuring a clean cut every time.
Our custom bar cutter blades solve a common industry problem: brittle fracture when cutting high-strength rebar. We optimize the blade’s hardening depth and toughness, making it more durable and reliable for heavy duty cutting scenarios. Whether you need a blade for standard or special cutting needs, our custom options can meet your requirements.
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 |
Core Principles: 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.
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.
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.
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.
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.
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.
Based on different working conditions and budget requirements, we offer three general industrial-grade alloy steel materials:
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