Built for larger-scale concrete crack routing and repair preparation, the Benchmark Abrasives 7" Crack Chaser Diamond Blade is designed to open and follow damaged concrete so the area can be cleaned and prepared for filling, sealing, or restoration. Its larger 7" diameter provides additional reach for deeper or more extensive repair work while maintaining the purpose-built crack-chasing function contractors need.
Designed specifically for concrete crack preparation, this blade helps turn irregular cracks into a more workable repair channel instead of relying on a conventional thin cutting blade. With a 7/8" / 5/8" arbor configuration and a maximum operating speed of 8,700 RPM, it is built for compatible larger-format crack-chasing and concrete repair equipment.
Product Specifications
Specification
Details
Diameter
7"
Blade Type
Crack Chaser Diamond Blade
Arbor
7/8" / 5/8"
Maximum RPM
8,700 RPM
Quantity
1 Blade
Features
Purpose-built design for concrete crack preparation
7" diameter provides additional reach for larger repair applications
Helps open irregular cracks into a more workable repair channel
Designed for crack routing rather than conventional straight-through cutting
Built for concrete repair and restoration applications
7/8" / 5/8" arbor configuration
Rated up to 8,700 RPM
Applications & Performance
Designed specifically for routing and preparing cracks in concrete before repair materials are applied.
Concrete crack chasing
Crack routing and opening
Concrete repair preparation
Creating a more consistent repair channel
Removing loose or deteriorated material along cracks
Preparing cracks for compatible repair compounds or sealants
Larger 7" diameter provides additional cutting reach for deeper or more extensive repair work
Purpose-built profile helps follow irregular concrete cracks more effectively than a conventional thin cutting blade
Materials
Concrete
Machine Compatibility
For use with 7" angle grinders.
Compatible examples include:
Makita® GA7021 7" Angle Grinder — 6,600 RPM; dry crack preparation with 7/8" mounting and a crack-chasing guard that clears the full blade profile, when the blade permits dry use.
Other models may also fit. Match the mounting, speed rating and required guard to your tool.
Safety Tips
Make controlled straight passes and reposition the tool as needed; do not twist the blade in the cut.
Never exceed the blade’s maximum rated speed of 8,700 RPM.
Inspect the blade, arbor opening, and mounting flanges before each use. Do not use a damaged or distorted blade.
Use the cutting or crack-chasing guard required by the machine manufacturer.
Match the 7/8" / 5/8" arbor configuration and flange system to the machine before installation.
Never enlarge the arbor opening or use improvised or loose mounting hardware.
Verify the permitted cutting method from the current blade marking and machine instructions before use.
Do not side-load or grind with the sides of the blade unless the exact accessory is specifically approved for that operation.
Use appropriate eye, hearing, respiratory, and other required personal protective equipment.
Concrete routing can generate respirable silica dust. Use task-appropriate water-delivery or dust-extraction controls for the application.
Built for larger-scale concrete crack routing and repair preparation, the Benchmark Abrasives 7" Crack Chaser Diamond Blade is designed to open and follow damaged concrete so the area can be cleaned and prepared for filling, sealing, or restoration. Its larger 7" diameter provides additional reach for deeper or more extensive repair work while maintaining the purpose-built crack-chasing function contractors need.
Designed specifically for concrete crack preparation, this blade helps turn irregular cracks into a more workable repair channel instead of relying on a conventional thin cutting blade. With a 7/8" / 5/8" arbor configuration and a maximum operating speed of 8,700 RPM, it is built for compatible larger-format crack-chasing and concrete repair equipment.
Product Specifications
Specification
Details
Diameter
7"
Blade Type
Crack Chaser Diamond Blade
Arbor
7/8" / 5/8"
Maximum RPM
8,700 RPM
Quantity
1 Blade
Features
Purpose-built design for concrete crack preparation
7" diameter provides additional reach for larger repair applications
Helps open irregular cracks into a more workable repair channel
Designed for crack routing rather than conventional straight-through cutting
Built for concrete repair and restoration applications
7/8" / 5/8" arbor configuration
Rated up to 8,700 RPM
Applications & Performance
Designed specifically for routing and preparing cracks in concrete before repair materials are applied.
Concrete crack chasing
Crack routing and opening
Concrete repair preparation
Creating a more consistent repair channel
Removing loose or deteriorated material along cracks
Preparing cracks for compatible repair compounds or sealants
Larger 7" diameter provides additional cutting reach for deeper or more extensive repair work
Purpose-built profile helps follow irregular concrete cracks more effectively than a conventional thin cutting blade
Materials
Concrete
Machine Compatibility
For use with 7" angle grinders.
Compatible examples include:
Makita® GA7021 7" Angle Grinder — 6,600 RPM; dry crack preparation with 7/8" mounting and a crack-chasing guard that clears the full blade profile, when the blade permits dry use.
Other models may also fit. Match the mounting, speed rating and required guard to your tool.
Safety Tips
Make controlled straight passes and reposition the tool as needed; do not twist the blade in the cut.
Never exceed the blade’s maximum rated speed of 8,700 RPM.
Inspect the blade, arbor opening, and mounting flanges before each use. Do not use a damaged or distorted blade.
Use the cutting or crack-chasing guard required by the machine manufacturer.
Match the 7/8" / 5/8" arbor configuration and flange system to the machine before installation.
Never enlarge the arbor opening or use improvised or loose mounting hardware.
Verify the permitted cutting method from the current blade marking and machine instructions before use.
Do not side-load or grind with the sides of the blade unless the exact accessory is specifically approved for that operation.
Use appropriate eye, hearing, respiratory, and other required personal protective equipment.
Concrete routing can generate respirable silica dust. Use task-appropriate water-delivery or dust-extraction controls for the application.
Frequently Asked Questions
It is designed for routing and opening cracks in concrete before filling, sealing, or other repair work.
The larger diameter provides additional reach for deeper or more extensive concrete repair applications compared with smaller crack-chaser blades.
The blade uses a 7/8" / 5/8" arbor configuration. Always verify the exact mounting and flange arrangement required by the machine.
The maximum blade rating is 8,700 RPM. The blade rating must meet or exceed the machine’s required accessory speed.
The current product record does not establish a confirmed blade thickness for this SKU.
The current product record does not establish a confirmed segment height for this SKU.
Follow the operating method marked on the blade and permitted by the machine. Contact Benchmark Abrasives before use if the wet/dry marking is unclear.
Compatible examples include Makita® GA7021 7" Angle Grinder: 6,600 RPM; dry crack preparation with 7/8" mounting and a crack-chasing guard that clears the full blade profile, when the blade permits dry use. Other models may also fit; match the mounting, speed rating and guard to your tool.
No. Crack chaser blades are designed specifically for routing and preparing concrete cracks. Tuck point blades are primarily intended for removing mortar and other material from masonry joints.
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