The Ultimate Guide to RC-20 & RC-25 Rebar Cutter Replacement Blades
Introduction
Portable hydraulic rebar cutter blades and electro-hydraulic rebar shear knives are core wear parts for on-site construction. Tools like RC-20, RC-25, RC-22, HBC-19N and HBC-22 handheld cutters are widely used for rebar cutting jobs across the industry. Most operators underestimate how important premium RC-20 rebar cutter blades and RC-25 replacement blades really are. Cheap, non-standard aftermarket blades not only wear out rapidly, but also create heavy internal stress inside your equipment. This will severely damage hydraulic pumps, sealing parts and other key components of your heavy duty handheld rebar cutter tooling. Investing in precision-made replacement blades is the most practical way to protect your machines, maintain stable cutting performance and avoid costly work delays on site.
Issues Caused by Loose Blades and Blade Play
All handheld portable hydraulic rebar cutters work with fast, high-pressure hydraulic strokes inside a compact frame. Even minor deviations on thickness or bolt hole position of rebar shear knives will trigger blade play — the unwanted wobble during operation. When cutting tough ribbed rebar, this movement leads to uneven force distribution. Instead of clean cuts, your RC-20 rebar cutter or RC-25 rebar cutter will vibrate violently and produce rough, jagged edges. The hydraulic piston has to work under extra load, which accelerates seal leakage and shortens the whole tool’s lifespan. Only blades manufactured to strict OEM standards can eliminate blade play and deliver reliable cutting results. Our products also work perfectly as Ogura rebar cutter replacement blades and BN Products rebar cutter knives for cross-brand use.
Blade Material Options & Real-World Performance
Blade material directly decides the hardness, toughness, wear resistance and service life of every rebar cutter blade. You need to pick the right material according to your rebar types and daily working intensity.
H13 Hot Work Die Steel
Chemical Composition
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%, Remainder: Iron
Key Properties
A moderate carbon level balances strength and toughness, effectively preventing chipping on electro-hydraulic rebar shear knives. Chromium, molybdenum and vanadium combine to enhance heat resistance, hot crack resistance and impact resistance. Silicon improves high-temperature strength and thermal stability after heat treatment.
Mechanical Ratings
Hardness: HRC 50–55
This material features outstanding toughness, impact resistance and anti-chipping performance. It also stands out in heat resistance and thermal fatigue resistance.
Best Uses
H13 is the top-grade material for professional portable hydraulic rebar cutter blades. It performs excellently under heavy impact and long-hour continuous cutting. The blade resists deformation and edge chipping, making it the ideal choice for processing thick rebar and high-strength ribbed rebar with heavy duty handheld rebar cutter tooling.
Cr12MoV Cold Work Die Steel
Chemical Composition
C: 1.45–1.70%, Cr: 11.00–12.50%, Mo: 0.40–0.60%, V: 0.15–0.30%, Si ≤ 0.40%, Mn ≤ 0.40%, P & S ≤ 0.030%, Remainder: Iron
Key Properties
High carbon and chromium content form dense hard carbides, bringing superior wear resistance to rebar cutter blades. Molybdenum refines metal grains, reduces brittleness and upgrades toughness and fatigue resistance. Vanadium optimizes internal structure to extend edge retention.
Mechanical Ratings
Hardness: HRC 55–62
It delivers strong compression strength and bending strength, with much longer service life than regular blades.
Best Uses
This high-hardness steel is ideal for repetitive cutting of hard cold-rolled rebar. Its cutting edge lasts 2 to 3 times longer than economy-grade materials. Note that its toughness is relatively lower, so do not apply it to high-impact cutting tasks for your RC-20 rebar cutter blades or RC-25 replacement blades.
9CrSi Steel
Chemical Composition
C: 0.85–0.95%, Si: 1.20–1.60%, Cr: 0.95–1.25%, Mn: 0.30–0.60%, P & S ≤ 0.030%, Remainder: Iron
Key Properties
Carbon boosts hardness and wear resistance to keep rebar shear knives sharp for longer. Silicon maintains red hardness and avoids softening during continuous shearing. Chromium guarantees uniform hardness across the whole blade. Manganese improves toughness and lowers quenching crack risks.
Mechanical Ratings
Hardness: HRC 55–62
It has solid compression strength, good wear resistance and balanced toughness for general cutting work.
Best Uses
As a cost-effective option, 9CrSi blades are easy to machine and heat treat. They are widely used for cutting standard medium and low-strength rebar on small and medium job sites, serving as budget-friendly RC-20 rebar cutter blades and RC-25 replacement blades.
Select Blades by Rebar Type
Ordinary round steel: Low hardness and cutting resistance. 9CrSi or Cr12MoV rebar cutter blades are fully capable for daily work, helping you control procurement costs.
High-strength ribbed rebar: Hard texture and abrasive surface wear down blades quickly. We strongly recommend H13 portable hydraulic rebar cutter blades. Its excellent toughness and wear resistance stop chipping, even during non-stop high-intensity cutting.
Size & Shape Matching for Heavy Duty Handheld Rebar Cutter Tooling
Blade Shapes
Two mainstream designs are available for all kinds of electro-hydraulic rebar shear knives:
Square blades: Four usable cutting edges. You can rotate the blade after one edge gets dull, which greatly extends the total service life. This design is perfect for large-volume rebar processing.
Rectangular blades: Single or double cutting edges, mostly matched with small-tonnage portable rebar cutters.
Exact Size Standards
Each cutter model has fixed specifications on blade length, width, thickness and bolt hole spacing. Always follow the official manual when choosing rebar cutter replacement blades. Standard dimensions for mainstream models:
All our blades strictly follow OEM dimensions. They achieve 1:1 perfect fit for RC series, HBC-19N, HBC-22, Ogura rebar cutter replacement blades and BN Products rebar cutter knives, realizing full cross-brand compatibility.
Professional Production Process
All our RC-20 rebar cutter blades and RC-25 replacement blades adopt full precision grinding and vacuum heat treatment. This mature craft ensures even hardness distribution, stable edge performance and strong resistance against chipping and dulling. We also optimize hardening depth and overall toughness, solving the common problem of brittle fracture when cutting high-strength rebar.
Conclusion & Call to Action
Low-quality aftermarket rebar shear knives will hold back your construction progress and damage your valuable heavy duty handheld rebar cutter tooling. Nanjing Alas International Co., LTD supplies factory-direct RC-20 rebar cutter blades, RC-25 replacement blades, as well as compatible blades for HBC, Ogura, BN Products and other well-known brands. We carry out strict dimensional inspection and provide customized OEM solutions for all portable hydraulic rebar cutter blades and electro-hydraulic rebar shear knives.
Send your machine models, blade dimensions or technical drawings to our team via mt@alasmachinery.com. Get a fast and competitive bulk quote right now, and eliminate unexpected downtime caused by faulty rebar cutter blades.
Portable Electric RC-20 and RC-25 Rebar Cutters Blades size
Mould | Blade dimensions (length × width × thickness) mm |
HBC-19N / HBC-19R | 26×20×10 |
HBC-22 | 30×24×11 |
HBC-25N / HBC-225 | 36×28×13 |
HBC-232 | 44×36×16 |
RC-16 | 22×17×8.5；26×20×9；26×20×9.5；26×20×10 |
| RC-20/22 | 30×24×11mm |
RC-25 | 36×28×14mm；36×28×15mm；31.8×27×12mm |
RC-32 | 40×30×15 |
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 |
|
Installation position of the blade on a portable rebar shear machine
Below are our portable rebar cutting machine models that are compatible with our blades. Customization based on drawings is also available.