Built for controlled routing and preparation of cracks in concrete, the Benchmark Abrasives 4-1/2" 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 turn irregular cracks into a more consistent repair channel, making filling, sealing, and restoration work easier to manage.
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 up to 13,580 RPM, the larger 4-1/2" diameter provides additional reach while maintaining the control needed for professional concrete repair and restoration work.
Product Specifications
Specification
Details
Diameter
4-1/2"
Blade Type
Crack Chaser Diamond Blade
Thickness
0.090"
Segment Height
10 mm
Arbor
5/8"
Maximum RPM
13,580 RPM
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
Larger 4-1/2" diameter provides additional reach over the 4" version
Designed for concrete repair and restoration applications
5/8" arbor configuration
Rated up to 13,580 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 concrete along cracks
Preparing cracks for compatible repair compounds or sealants
Segmented rim helps evacuate debris from the routed area
4-1/2" diameter provides additional cutting reach for larger repair work
Materials
Concrete
Machine Compatibility
For use with 4-1/2" angle grinders.
Compatible examples include:
Makita® GA4530 4-1/2" Angle Grinder — 11,000 RPM; conditional on manufacturer-approved flanges for this blade’s plain 5/8" bore and a guard that clears its crack-chasing profile. Use only if the blade permits dry cutting.
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.
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 controlled routing and preparation of cracks in concrete, the Benchmark Abrasives 4-1/2" 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 turn irregular cracks into a more consistent repair channel, making filling, sealing, and restoration work easier to manage.
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 up to 13,580 RPM, the larger 4-1/2" diameter provides additional reach while maintaining the control needed for professional concrete repair and restoration work.
Product Specifications
Specification
Details
Diameter
4-1/2"
Blade Type
Crack Chaser Diamond Blade
Thickness
0.090"
Segment Height
10 mm
Arbor
5/8"
Maximum RPM
13,580 RPM
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
Larger 4-1/2" diameter provides additional reach over the 4" version
Designed for concrete repair and restoration applications
5/8" arbor configuration
Rated up to 13,580 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 concrete along cracks
Preparing cracks for compatible repair compounds or sealants
Segmented rim helps evacuate debris from the routed area
4-1/2" diameter provides additional cutting reach for larger repair work
Materials
Concrete
Machine Compatibility
For use with 4-1/2" angle grinders.
Compatible examples include:
Makita® GA4530 4-1/2" Angle Grinder — 11,000 RPM; conditional on manufacturer-approved flanges for this blade’s plain 5/8" bore and a guard that clears its crack-chasing profile. Use only if the blade permits dry cutting.
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.
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.
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.
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.
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® GA4530 4-1/2" Angle Grinder: 11,000 RPM; conditional on manufacturer-approved flanges for this blade’s plain 5/8" bore and a guard that clears its crack-chasing profile. Use only if the blade permits dry cutting. 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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