Depressed Center Wheels

Depressed center wheels are abrasive wheels used in commercial maintenance, fabrication, metalworking, and shop environments for grinding, cutting, shaping, material removal, beveling, and weld removal. The available Type 27 wheels include options for ferrous metals, metals and non-ferrous materials, carbon steel, stainless steel, and general-purpose grinding work.

Product Display:
Helpful Buying Guide

Choose a Depressed Center Wheel for the Work at Hand

Start by matching the Type 27 wheel profile, wheel diameter, opening or connection style, abrasive material, and intended task to the requirements of your compatible equipment and job. This category includes grinding wheels as well as a thin cut-off wheel.

Visual Guide

Popular examples in this category

Type 27 Aluminum Oxide Depressed Center Grinding Wheel, 4-1/2 in. x 1/4 in. x 7/8 in., 24 GritType 27 Aluminum Oxide Depressed Center Grinding Wheel, 4-1/2 in. x 1/4 in. x 7/8 in., 24 GritWBB22338137-Inch Type 27 Aluminum Oxide Depressed Center Grinding Wheel7-Inch Type 27 Aluminum Oxide Depressed Center Grinding WheelWBB2139594Type 27 Aluminum Oxide Depressed Center Grinding Wheel, 6 in. x 7/8 in.Type 27 Aluminum Oxide Depressed Center Grinding Wheel, 6 in. x 7/8 in.WBB21397565 in. Type 27 Aluminum Oxide Depressed Center Grinding Wheel5 in. Type 27 Aluminum Oxide Depressed Center Grinding WheelWBB2139592
Use Cases

Grinding, cutting, and material removal

Choose from wheels represented for general-purpose grinding, cutting and grinding on ferrous metals, aggressive grinding on metals and non-ferrous materials, and heavy grinding, beveling, and weld removal.

How to Choose

Match size, fit, and abrasive

Compare wheel diameter, listed arbor opening or threaded connection, abrasive type, grit where stated, and whether the job calls for a grinding wheel or a thin cut-off wheel.

Applications

Support shop and metalworking work

Available options are suited to maintenance, fabrication, shop, and metalworking tasks, including work on ferrous metals, carbon steel, stainless steel, and non-ferrous materials where specified.

Additional Info

Look at wheel construction details

Product details may include fiberglass reinforcement, resin bond construction, high grain concentration, a thin profile, or features intended to reduce vibration and chatter.

Type 27Wheel profile

All represented products use a Type 27 depressed-center configuration.

4 to 9 in.Wheel diameters

The represented grinding wheel sizes span 4 through 9 inches.

24 or 36Listed grit options

Grit ratings stated in the summaries include 24 grit and 36 grit.

.045 in.Thin cut-off profile

The represented thin cut-off wheel has a .045-inch profile.

Comparison Guide

Compare the represented wheel types

Use this overview to distinguish the principal abrasive and application options described in the product summaries.

Wheel typeRepresented detailsStated applications
Aluminum oxide Type 27 grinding wheels4 to 7 inch options; selected 24-grit, resin-bonded, fiberglass-reinforced, and threaded optionsGeneral-purpose grinding; ferrous metals; metals and non-ferrous materials where specified
Ceramic Type 27 wheels9-inch 36-grit grinding wheel; 4-1/2-inch .045-inch ceramic aluminum oxide cut-off wheelHeavy grinding, beveling, and weld removal on carbon steel and stainless steel; cutting applications
Zirconia alumina Type 27 wheel4-1/2-inch diameter with 7/8-inch openingMaterial removal, finishing, and grinding work
Planning Guide

Plan the right fit before choosing

Plan for equipment compatibility

Confirm the Type 27 configuration and stated fit details

Each product represented uses a Type 27 depressed-center profile, but dimensions and connection details vary. Match the wheel to the size and mounting requirements specified for your equipment.

  • Wheel diameters represented include 4, 4-1/2, 5, 6, 7, and 9 inches.
  • Listed openings include 5/8 inch and 7/8 inch on applicable wheels.
  • One 4-1/2-inch grinding wheel has a 5/8-11 threaded connection.
  • A 4-1/2-inch thin cut-off wheel is listed with a .045-inch profile and 7/8-inch arbor opening.
Select the abrasive for the task

Compare aluminum oxide, ceramic, and zirconia alumina options

Aluminum oxide wheels are represented for general-purpose grinding and for ferrous-metal work. Ceramic options include a 9-inch, 36-grit wheel for heavy grinding, beveling, and weld removal on carbon steel and stainless steel, plus a thin ceramic aluminum oxide cut-off wheel. A zirconia alumina option is represented for material-removal and finishing and grinding work.

  • 24-grit aluminum oxide options support general-purpose or aggressive grinding where stated.
  • The 36-grit ceramic wheel is identified for heavy grinding work.
  • Ceramic aluminum oxide grain is used in the thin cut-off wheel.
  • The zirconia alumina wheel is listed with reduced vibration and chatter and up to 35% faster material removal than traditional abrasive wheels.
Consider the workpiece and work style

Use the stated application guidance to narrow the selection

For ferrous metals, several aluminum oxide Type 27 wheels are specifically identified for cutting and grinding. For carbon steel and stainless steel, the 9-inch ceramic wheel is the listed option. A 7-inch, 24-grit metal grinding wheel is identified for metals and non-ferrous materials.

  • Fiberglass reinforcement is listed on multiple grinding and cut-off wheel options.
  • Premium resin bond is listed on selected aluminum oxide wheels for ferrous-metal work.
  • A high grain concentration is listed on one 7-inch, 24-grit metal grinding wheel for consistent, smooth-running grinding action.
  • Single-wheel packages are represented on selected 4-, 5-, and 7-inch aluminum oxide wheels.
FAQ

Common questions before buying

What profile do these wheels use?

The represented products use a Type 27 depressed-center wheel profile.

What wheel sizes are represented?

Represented wheel diameters include 4, 4-1/2, 5, 6, 7, and 9 inches.

Are there options for ferrous metals?

Yes. Several aluminum oxide Type 27 wheels are identified for cutting and grinding work on ferrous metals.

Is there a cut-off wheel in this category?

Yes. The summaries include a 4-1/2-inch Type 27 ceramic aluminum oxide thin cut-off wheel with a .045-inch profile and 7/8-inch arbor opening.

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