Certified Business
With over 100,000 orders
With over 100,000 orders
Alpha Ultracut APR Series Flush Cutting Blades
Fast Shipping
Easy Returns
Secure Checkout
At a Glance
Quick Decision Guide
Blade Diameter
4-1/2"
Blade Thickness
1.7mm
Maximum RPM
13,200
Arbor
20mm Quad Drive
Primary Application
Flush Cutting
Tool Compatibility
Angle Grinders with Quad Drive Adapter
Material Compatibility
Metal, Wood, Plastic, Composites, Masonry & Concrete
Common Uses
Anchor Bolts, Rebar, Pipe & Protruding Materials
Why Choose This Product
Key Benefits
Flush Cutting Design
Cuts protruding materials close to floors, walls and surrounding surfaces
Quad Drive System
Accepts Alpha's exclusive adapter for angle grinder flush cutting
No Conventional Lock Nut
Quad Drive mounting eliminates the standard blade lock nut
Multi-Material Cutting
Cuts metal, wood, plastic, composites, masonry and concrete
Jobsite Versatility
Removes anchor bolts, rebar, pipe and other protruding materials
Multiple Blade Sizes
Available in 4-1/2", 5" and 7" diameters
Product Information
Product Details
Specifications
Brand
Alpha®
Part Number
APR45QA
UPC
749173610035
Product Type
Flush Cutting Blade
Series
Ultracut APR
Blade Diameter
4-1/2"
Blade Thickness
1.7mm
Maximum RPM
13,200
Arbor
20mm Quad Drive
Primary Application
Flush Cutting
Tool Compatibility
Angle Grinders with Alpha Quad Drive Adapter
Mounting System
Quad Drive Adapter
Lock Nut Requirement
Conventional Lock Nut Not Required with Quad Drive Adapter
Common Cutting Applications
Anchor Bolts, Rebar, Pipe & Protruding Materials
Metal Compatibility
Angle Iron, Pipe, Electrical Conduit, Rebar, Metal Studs, Structural Metal, Sheet Metal, Grid & Stainless Steel
Additional Materials
Wood, Plastics, Composite Materials, Masonry & Concrete
Application Environment
Manufacturing Facility & Jobsite
About This Product
Flush Cutting Blade for Metal, Masonry and Concrete
The Alpha® Ultracut APR Series combines high-performance cutting with a specialized design for flush cutting applications. Designed for use with the Alpha® Quad Drive Adapter, the blade can be mounted on compatible angle grinders without the conventional lock nut, allowing the blade to cut closer to floors, walls, and other surfaces.
Remove Anchor Bolts, Rebar and Pipe at the Surface
The APR Series provides a practical solution for cutting anchor bolts, concrete rebar, pipe, and other protruding materials flush with surrounding surfaces. Its design supports accurate, controlled flush cutting for fabrication work, construction, renovation, demolition, and jobsite applications.
Multi-Material Cutting for Construction and Fabrication
The blade cuts a broad range of materials including angle iron, pipe, electrical conduit, rebar, metal studs, structural metal, sheet metal, grid, stainless steel, wood, plastics, composite materials, masonry, and concrete. This multi-material capability allows one blade series to handle varied cutting requirements in manufacturing facilities and on jobsites.
Quad Drive Adapter for Angle Grinder Mounting
Each APR Series blade features a 20mm Quad Drive arbor and accepts the Alpha® exclusive Quad Drive Adapter for flush cutting with an angle grinder. The adapter uses a threaded arbor for grinder mounting and eliminates the lock nut normally required to secure the blade. The APR Series is available in 4-1/2", 5", and 7" diameters.
Product Resources
Documentation & Downloads
Common Questions
Frequently Asked Questions
What is the Alpha Ultracut APR Series designed for?
The APR Series is designed for flush cutting applications where material needs to be cut close to a floor, wall, or surrounding surface. Common applications include removing anchor bolts, rebar, and pipe.
What materials can the Ultracut APR Series cut?
The blades can cut angle iron, pipe, electrical conduit, rebar, metal studs, structural metal, sheet metal, grid, stainless steel, wood, plastics, composite materials, masonry, and concrete.
What is the Alpha Quad Drive system?
The APR Series uses a 20mm Quad Drive arbor that accepts Alpha's exclusive Quad Drive Adapter. The adapter has a threaded arbor for mounting the blade on compatible angle grinders for flush cutting applications.
Does the Ultracut APR blade require a standard lock nut?
When mounted using the Alpha Quad Drive Adapter, the system eliminates the conventional lock nut normally used to secure an angle grinder blade.
What sizes are available in the Ultracut APR Series?
The series is available in 4-1/2", 5", and 7" blade diameters.
What is the maximum RPM for each blade size?
The 4-1/2" APR45QA is rated for a maximum of 13,200 RPM, the 5" APR05QA for 12,200 RPM, and the 7" APR07QA for 8,400 RPM.