Built for controlled routing and preparation of cracks in concrete, the Benchmark Abrasives 4" Crack Chaser Diamond Blade is designed to open damaged areas so they can be properly cleaned and prepared for repair. Its specialized crack-routing profile helps create a more consistent repair channel than trying to follow irregular cracks with a conventional thin cutting blade.
The 0.090" blade thickness and 10 mm segmented rim provide a durable cutting profile for concrete crack preparation while helping clear debris from the routed area. Rated for wet or dry cutting and up to 13,580 RPM, this compact 4" blade gives contractors, repair crews, and concrete professionals a purpose-built solution for crack chasing and repair preparation.
Product Specifications
Specification
Details
Diameter
4"
Blade Type
Crack Chaser Diamond Blade
Thickness
0.090"
Segment Height
10 mm
Arbor
5/8"
Maximum RPM
13,580 RPM
Cutting Method
Wet or Dry
Quantity
1 Blade
Features
Purpose-built design for concrete crack preparation
0.090" blade thickness for controlled crack routing
10 mm segmented diamond rim
Helps open irregular cracks into a more workable repair channel
Segmented design helps clear debris during routing
Designed for repair and restoration applications
5/8" arbor configuration
Wet or dry cutting capability for greater application flexibility
Rated up to 13,580 RPM
Applications & Performance
Designed specifically for preparing concrete cracks before filling, sealing, or other repair work.
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
Segmented rim helps evacuate debris from the routed area
Compact 4" diameter provides control when following damaged concrete
Materials
Concrete
Machine Compatibility
For use with 4-1/2" angle grinders.
Compatible examples include:
Makita® GA4030K 4" Angle Grinder — 11,000 RPM; dry crack preparation with 5/8" blade mounting and a crack-chasing guard that clears the full blade profile.
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 13,580 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 5/8" arbor and flange system to the machine before installation.
Never enlarge the arbor opening or use improvised mounting hardware.
Only cut dry when both the blade and machine permit dry operation.
When dry cutting, follow the blade and machine manufacturer’s required cooling intervals.
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 controlled routing and preparation of cracks in concrete, the Benchmark Abrasives 4" Crack Chaser Diamond Blade is designed to open damaged areas so they can be properly cleaned and prepared for repair. Its specialized crack-routing profile helps create a more consistent repair channel than trying to follow irregular cracks with a conventional thin cutting blade.
The 0.090" blade thickness and 10 mm segmented rim provide a durable cutting profile for concrete crack preparation while helping clear debris from the routed area. Rated for wet or dry cutting and up to 13,580 RPM, this compact 4" blade gives contractors, repair crews, and concrete professionals a purpose-built solution for crack chasing and repair preparation.
Product Specifications
Specification
Details
Diameter
4"
Blade Type
Crack Chaser Diamond Blade
Thickness
0.090"
Segment Height
10 mm
Arbor
5/8"
Maximum RPM
13,580 RPM
Cutting Method
Wet or Dry
Quantity
1 Blade
Features
Purpose-built design for concrete crack preparation
0.090" blade thickness for controlled crack routing
10 mm segmented diamond rim
Helps open irregular cracks into a more workable repair channel
Segmented design helps clear debris during routing
Designed for repair and restoration applications
5/8" arbor configuration
Wet or dry cutting capability for greater application flexibility
Rated up to 13,580 RPM
Applications & Performance
Designed specifically for preparing concrete cracks before filling, sealing, or other repair work.
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
Segmented rim helps evacuate debris from the routed area
Compact 4" diameter provides control when following damaged concrete
Materials
Concrete
Machine Compatibility
For use with 4-1/2" angle grinders.
Compatible examples include:
Makita® GA4030K 4" Angle Grinder — 11,000 RPM; dry crack preparation with 5/8" blade mounting and a crack-chasing guard that clears the full blade profile.
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 13,580 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 5/8" arbor and flange system to the machine before installation.
Never enlarge the arbor opening or use improvised mounting hardware.
Only cut dry when both the blade and machine permit dry operation.
When dry cutting, follow the blade and machine manufacturer’s required cooling intervals.
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.
A crack chaser is purpose-built for following and opening irregular cracks, helping create a more consistent repair channel than a conventional thin cutting blade.
The blade is 0.090" thick.
The blade has a 10 mm segmented diamond rim.
Yes. The blade is intended for wet or dry cutting, but the machine must also permit the selected operating method.
The blade uses a 5/8" arbor. Always verify the exact mounting and flange arrangement required by the machine.
The maximum blade rating is 13,580 RPM. The blade rating must meet or exceed the machine’s required accessory speed.
Compatible examples include Makita® GA4030K 4" Angle Grinder: 11,000 RPM; dry crack preparation with 5/8" blade mounting and a crack-chasing guard that clears the full blade profile. 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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