Klingspor 310900 A 30 M 5″ x 1/4″ x 7/8″ Depressed Center Grinding Disc

The Klingspor 310900 Kronenflex A 30 M Special grinding disc is a 5 inch x 1/4 inch x 7/8 inch Type 27 depressed center grinding wheel designed for stainless steel and steel processing. It uses aluminum oxide grain, runs at up to 12,250 RPM, and is built for strong stock removal, steady grinding performance, and reliable service life in fabrication, maintenance, and metalworking applications.

The Klingspor 310900 is a Kronenflex A 30 M Special grinding disc built for general grinding work on stainless steel and steel. In Klingspor’s lineup, the A 30 M Special is positioned as a high performance wheel for stainless steel processing and related fabrication work, with aluminum oxide grain and a depressed center profile for use on compatible angle grinders.

This 5 inch disc measures 1/4 inch thick with a 7/8 inch bore and a maximum speed of 12,250 RPM at 80 m/s. Klingspor describes the wheel as a 2 + 1 high performance grinding disc, and the product family is promoted for high aggressiveness, a balanced relationship between grinding performance and service life, and compliance with oSa guidance and EN 12413 safety standards. Your pasted application list was broader than the current A 30 M Special product page; the official family page specifically highlights stainless steel and steel processing for this model family.

Klingspor Kronenflex 5″ x 1/4″ x 7/8″ Depressed Center Grinding Disc At a Glance

• Built for Stainless Steel and Steel: Designed for grinding work in stainless steel processing and steel fabrication.
• 5 Inch Type 27 Wheel: Fits common angle grinders that use 5 inch depressed center grinding discs with a 7/8 inch arbor.
• Aluminum Oxide Grain: Uses a proven abrasive grain for steady grinding action on ferrous metals.
• High Stock Removal: Klingspor positions this wheel for aggressive grinding and productive material removal.
• 12,250 RPM Maximum: Rated for high-speed grinder operation when used within the stated limits.
• 1/4 Inch Thick Disc: Good fit for grinding, edge work, beveling, and burr removal.
• Special Performance Class: A 30 M Special is part of Klingspor’s Special class for demanding applications.
• Safety Standard Compliance: Manufactured to meet EN 12413 and tested to oSa guidelines.

Quick Specs

• Brand: Klingspor
• Manufacturer Part Number: 310900
• UPC: 04014855161515
• Main Size: 5″ x 1/4″ x 7/8″
• Speed: 12,250 RPM max / 80 m/s
• Primary Operating Modes: Surface grinding, edge beveling, burr removal

Markets

• Metal Fabrication: Useful for grinding welds, cleaning edges, and preparing stainless and steel components.
• Railing Construction: Klingspor specifically lists railing construction as an application area for the A 30 M Special family.
• Stainless Steel Processing Shops: Built for routine grinding work on stainless steel parts and assemblies.
• Maintenance Departments: A practical choice for repair grinding on steel fixtures, brackets, and frames.
• Commercial Welding Shops: Fits day-to-day grinding work where consistent removal rate matters.
• Industrial Manufacturing: Suitable for production and maintenance environments using Type 27 grinding wheels.

For buyers who need a dependable 5 inch grinding disc for stainless steel and steel, the Klingspor 310900 offers a straightforward specification and a well-established abrasive line. The 1/4 inch wheel thickness supports common grinding tasks such as smoothing welds, beveling edges, and removing burrs, while the depressed center design fits standard grinder setups used in fabrication and maintenance shops.

Klingspor positions the A 30 M Special for aggressive grinding with a practical balance between removal rate and service life. That makes it a good fit for professional users who want a grinding wheel that cuts efficiently without stepping into a more specialized or niche abrasive. It is also a sensible option for purchasing teams that need a recognizable industrial brand, standard 7/8 inch arbor sizing, and application coverage focused on stainless steel and steel processing.

Klingspor 310900 A 30 M 5″ x 1/4″ x 7/8″ Depressed Center Grinding Disc Features

• A 30 M Special Performance Class: Built for demanding grinding work on stainless steel and steel.
• Kronenflex Product Line: Part of Klingspor’s bonded abrasive range for professional grinding applications.
• Aluminum Oxide Abrasive Grain: Supports consistent grinding performance on ferrous metals.
• Depressed Center Form: Type 27 profile helps provide working angle clearance during grinding.
• 80 m/s Operating Speed: Rated for high-speed operation within the stated limits.
• High Aggressiveness: Designed for strong attack and solid stock removal.
• Balanced Service Life: Klingspor promotes an optimized relationship between cutting performance and disc life.
• Safety Compliance: Tested to oSa guidelines and compliant with EN 12413.

Compatible Accessories / Works Well With

• Compatible 5 inch angle grinders that accept 7/8 inch arbor Type 27 depressed center grinding discs
• Guard and mounting hardware

Klingspor 310900 A 30 M 5″ x 1/4″ x 7/8″ Depressed Center Grinding Disc Includes

• (1) Klingspor 310900 Kronenflex A 30 M Special 5″ x 1/4″ x 7/8″ depressed center grinding disc

Klingspor 310900 A 30 M 5″ x 1/4″ x 7/8″ Depressed Center Grinding Disc Specifications

• Brand: Klingspor
• Manufacturer Part Number: 310900
• UPC: 04014855161515
• Product Type: Grinding disc
• Product Line or Series: Kronenflex A 30 M Special
• Wheel Type: Type 27 depressed center
• Diameter: 5 in.
• Thickness: 1/4 in.
• Bore / Arbor: 7/8 in.
• Abrasive Grain: Aluminum oxide
• Bonding Agent: Synthetic resin, fibre-reinforced
• Quality Class: Special
• Maximum Operating Speed: 80 m/s
• Maximum RPM: 12,250
• Weight: 0.417 lb
• Primary Materials: Stainless steel, steel
• Primary Applications: Stainless steel processing, railing construction
• Sales Unit: Each
• Box Quantity: 10 pieces

Why Customers Choose the Klingspor A 30 M 5″ x 1/4″ x 7/8″ Depressed Center Grinding Disc

Buyers usually choose this kind of Klingspor grinding disc because it covers a common need without unnecessary complexity. The 5 inch size, 1/4 inch thickness, and 7/8 inch arbor fit a standard angle grinder setup, which makes it easy to stock for fabrication, maintenance, and welding work. For teams working with stainless steel and steel, the A 30 M Special gives them a known abrasive line with a clear application focus and a speed rating that matches everyday shop use.

It also appeals to users looking for a practical grinding wheel that can handle weld cleanup, edge work, and burr removal while maintaining a solid balance between aggressiveness and disc life. That combination matters to shops trying to control consumable costs without stepping down in performance.