Resin Bond Diamond 1A1R Cutoff Wheels

Braemar USA Resin Bond Diamond 1A1R Cutoff Wheels are engineered for precision cutting, slicing, slotting, and sectioning of hard, brittle, and nonferrous materials. Combining a thin, straight-sided 1A1R profile with a free-cutting resin bond, these diamond cutoff wheels deliver fast cutting action, reduced heat generation, clean edges, and excellent surface finishes.
The 1A1R wheel design produces a narrow, controlled kerf that minimizes material loss while maintaining accurate cut widths. In addition, the resin bond provides a more forgiving cutting action than rigid metal-bond systems. As a result, these wheels help reduce cutting forces, vibration, edge chipping, and damage to delicate components.

Free-Cutting Resin Bond Technology

The resin-bond system is designed to release worn diamond particles at a controlled rate, continuously exposing fresh, sharp cutting points. This self-sharpening action helps maintain consistent cutting performance and prevents excessive glazing or loading during production.
Because resin bond cuts with lower resistance, it can reduce heat at the cutting zone and place less mechanical stress on the workpiece. Therefore, Resin Bond Diamond 1A1R Cutoff Wheels are especially effective for thin sections, fragile parts, delicate materials, and applications requiring a high-quality cut surface.

Precision 1A1R Wheel Geometry

The 1A1R configuration is a straight cutoff wheel with diamond abrasive distributed around the outer rim. Its thin profile is ideal for producing narrow slots and accurate cuts while conserving expensive workpiece material.
Properly specified 1A1R diamond wheels can provide:
• Fast, free-cutting performance
• Narrow and consistent kerf widths
• Reduced cutting forces
• Minimal material loss
• Lower heat generation
• Reduced edge chipping and breakout
• Smooth cut surfaces
• Accurate slot widths and cutting depths
• Less stress on delicate components
• Consistent performance throughout the wheel’s service life

Materials Commonly Cut

Resin Bond Diamond 1A1R Cutoff Wheels are recommended for cutting a wide range of hard, brittle, and nonferrous materials, including:
• Tungsten carbide
• Advanced and technical ceramics
• Alumina
• Aluminum nitride
• Boron carbide
• Ferrite
• Glass and optical glass
• Graphite
• MACOR® machinable glass ceramic
• Piezoelectric ceramics
• Quartz and fused quartz
• Sapphire
• Silicon
• Silicon carbide
• Silicon nitride
• Semiconductor substrates
• Composite materials
• Other engineered ceramics and nonferrous materials
Diamond wheels are generally not recommended for cutting steels and other ferrous metals because diamond can react with iron at high cutting temperatures. For hardened steel, tool steel, superalloys, and similar ferrous materials, a CBN cutoff wheel is typically the preferred solution.

Common Cutting Applications

Braemar USA Resin Bond Diamond 1A1R Cutoff Wheels are used in precision manufacturing, research, and production environments for applications such as:
• Cutting and sectioning carbide components
• Slicing advanced ceramic parts
• Cutting glass, quartz, and sapphire
• Slotting technical ceramics
• Separating electronic components
• Cutting semiconductor substrates
• Producing narrow grooves and channels
• Sectioning laboratory samples
• Cutting optical components
• Trimming composite materials
• Fabricating sensors and electronic assemblies
• Producing aerospace, medical, and defense components

Advantages of Resin Bond Diamond Cutoff Wheels

Resin bond is an excellent choice when the application requires a balance of cutting speed, edge quality, and controlled wheel wear. Unlike harder bond systems, the resin matrix provides a smoother cutting action and exposes new diamond abrasive as the wheel wears.
Key benefits include:
• Faster cutting with lower spindle loads
• Cooler operation and reduced risk of thermal damage
• Improved surface finishes on cut faces
• Reduced chipping on fragile materials
• Lower cutting pressure
• Excellent performance on carbide and ceramics
• Controlled self-sharpening action
• Reduced glazing and loading
• Consistent cutting performance
• Reliable results in wet or dry applications, depending on the wheel specification

Diamond Grit Selection

Diamond grit size directly affects cutting speed, edge quality, surface finish, and wheel life. Coarser diamond grit provides more aggressive cutting action and faster material removal. However, it may also produce a rougher cut surface or greater edge chipping on delicate materials.
Finer diamond grit produces smoother finishes, narrower edge damage, and improved cut quality. Therefore, fine-grit wheels are often selected for fragile components and applications with strict surface-finish requirements. Braemar USA can recommend the appropriate diamond grit based on the material, part geometry, cutting depth, machine, and desired finish.

Custom Wheel Specifications

Braemar USA offers standard and custom Resin Bond Diamond 1A1R Cutoff Wheels to meet specific production requirements. Each wheel can be engineered around the workpiece material, machine conditions, coolant system, target kerf width, surface finish, and required production rate.
Custom options include:
• Wheel diameter
• Wheel thickness
• Arbor-hole size
• Diamond grit size
• Diamond concentration
• Resin-bond hardness
• Abrasive rim depth
• Side clearance
• Core material
• Cutting-edge geometry
• Precision tolerances
• Special mounting requirements
Bond hardness can also be adjusted to optimize cutting performance. A softer bond exposes fresh diamond more quickly for free cutting, while a harder bond can improve wheel life and form retention under stable operating conditions.

Operating Recommendations

For the best performance, wheel speed, feed rate, cutting depth, coolant flow, and workpiece support should be matched to the application. Excessive feed pressure can cause wheel deflection, increase edge chipping, and reduce cutting accuracy. Meanwhile, insufficient feed pressure may allow the wheel to rub instead of cut, leading to heat buildup or glazing.
Adequate coolant is recommended whenever the machine and application permit. Coolant helps control temperature, remove cutting debris, prevent loading, and improve both cut quality and wheel life. Accurate spindle alignment, minimal runout, rigid workholding, and properly dressed mounting flanges are also essential for precision cutoff operations.

Made in the USA

Made in the USA, Braemar USA Resin Bond Diamond 1A1R Cutoff Wheels provide the fast cutting action, cool operation, and precision required for demanding industrial applications. Available in standard and custom specifications, these wheels deliver clean cuts, reduced chipping, consistent kerf widths, and excellent surface finishes on carbide, ceramics, glass, quartz, sapphire, silicon, and other hard, nonferrous materials.

Call (480) 966-9311 or Add to Quote for pricing.