Through-Hardened Cutting Rules
Through-hardened rules have the same hardness in body and edge. A specific tempering and decarburization process achieves a specific rule structure with a soft deep decarburization zone, which results in excellent bending properties. In general, Bohler, Viking, and Helmold cutting edges and bevels have a shaved finish for highest accuracy.
Bohler Top
Body: 45 HRC
Edge: 45 HRC
Thicknesses: 1.5 / 2 / 3 / 4
Heights (Based on Thickness): .865 – 3.937
Description
Top cutting rule offers good bendability, and the body-edge hardness is well balanced for cutting abrasive materials, e.g. solid boxboard, corrugated board, labels, postcards, …
- Through Hardened – Medium Hard
- Low – Medium volume runs
- Cost effective all-purpose rule
- Ideal for paperboard, boxboard, and corrugated
- Similar rules include; Viking MM44 and Helmold H65
Viking MM
Body: 34 / 40 / 44 / 47 / 52HRC
Edge: 34 / 40 / 44 / 47 / 52HRC
Thicknesses: 1.5 / 2 / 3 / 4 / 6
Heights (Based on Thickness): .315 (8mm), .375 (9.5mm), .394 (10mm), .473 – 3.937
Description
MM cutting rule is an all-purpose, through-hardened cutting rule used primarily for folding carton and corrugated materials. The 40 and 44 hardness are the most common and most readily available.
- The same body and cutting edge hardness
- Good bendability due to soft and ductile surface layer
- Small to medium size runs
- Good bending properties
- All-purpose rule (carton, corrugated)
- Similar rules include; Bohler Top and Helmold H65
Helmold 65 Ultraflex
Body: 45 HRC
Edge: 45 HRC
Thicknesses: 1.5 / 2 / 3 / 4
Heights: .375 – 2.000
Description
Helmold 65 is an all-purpose rule that offers good life when cutting a variety of substrates, e.g. solid boxboard, corrugated board, labels, postcards, …
- Through Hardened – Medium Hard
- Low – Medium volume runs
- Cost-effective all-purpose rule.
- Ideal for paperboard, boxboard, and corrugated
- Similar rules include; Bohler Top and Viking MM
Bohler H 75
Body: 51 HRC
Edge: 51 HRC
Thicknesses: 2 / 3 / 4
Heights (Based on Thickness): .865 – 3.937
Description
H 75 is a very hard cutting rule which is still bendable to 85° and offers high stability in die cutting operations. The rule life is good when die cutting difficult materials, e.g. gaskets, rubber, cork, felts, beer mats, …
- Through Hardened – Very Hard
- Low – Medium volume runs
- High stability and performance during difficult cutting operations.
- Ideal for gaskets, rubber, cork, felt, and abrasive materials.
- Similar rules include; Helmold 70
Helmold 70
Body: 50 HRC
Edge: 50 HRC
Thicknesses: 2 / 3 / 4
Heights (Based on Thickness): .250 – 1.250
Description
Helmold 70 is a through-hardened cutting rule that offers increased body strength, yielding improved cutting life for the packaging industry. This product would be classified as a hard rule resulting in longer durability for more abrasive cutting situations, e.g. gaskets, rubber, cork, felts, beer mats, …
- Through Hardened – Hard
- Low – Medium volume runs
- High stability and performance during difficult cutting operations.
- Ideal for gaskets, rubber, cork, felt, and abrasive materials.
- Similar rules include; Bohler H 75
Helmold 80 / 85
Body: 54 / 58 HRC
Edge: 54 / 58 HRC
Thickness: 2
Heights: .500 – .937
Description
Both Helmold 80 and 85 are through-hardened cutting rules that are recommended for extreme applications that require a very hard body and edge. Both of these rules are for straight work only.
