Steel Media Specifications

BALLS
elipse shapeEclipse
Round balls with slight flattening at the poles*. Available in sizes from 3/32″ – 3/16″.
*Precise roundness is not required for the majority of steel media finishing applications. Thus, two small flat spots at opposite poles are not objectionable. Pole-flattened balls are less expensive to manufacture and customers benefit from these economies through lower prices.
** All decimal dimensions are approximately ± .010, with the exception that length of pins and diagonals are ± .020.
abcoAbco
Round balls without flats for more critical finishing requirements.
CONES
Center flange and tapered crowns provide contact angles and on curved surfaces. Small sizes are ideal for ornamental designs.
conesOrder
Size
Dimensions
AB
ball bearings
3/16″
5/16″
1/2″
.155″
.265″
.470″
.200″
.315″
.535″

PINS
Tapering to pointed ends, pins reach into recesses and grooves, deflash through-holes and clean threaded areas.
pinpin
Slim (S)
(inches)

3/64″ x 1/2″
1/16″ x 9/32″
1/16″ x 1/2″
Taper (T)
(inches)
3/32″ x 3/8″
1/8″ x 3/8″
1/8″ x 1/2″
5/32″ x 1/2

OVALBALLS
This shape introduces an oscillating motion to the finishing mass and provides more surface-to-surface contact than balls.
oval ballsOrder
Size
Dimensions
AB
ball bearings
1/8″
5/32″
3/16″
5/16″
.245″
.320″
.380″
.535″
.125″
.156″
.187″
.312″

BALLCONES
This design combines the burnishing abilities of balls and cones into one scientifically proportioned shape.
ConesOrder
Size
Dimensions
AB
ball bearings
1/8″
5/32″
3/16″
1/4″
5/16″
.125″
.215″
.270″
.320″
.375″
.170″
.270″
.300″
.400″
.465″


ABCUT™
Patented abrasive surface puts teeth into finishing for fast, heavy deburring, burnishing and material removal. Available in three standard sizes.
ABCUT™Dimensions
LengthDiameter
ball bearings
1/8″ x1/2″
5/32″x7/8″
7/32″x7/8″
.130 -.136″
.167 -.173″
.228 -.239″

DIAGONALS
Beveled edges of diagonally-cut ends provide effective finishing action in corners. Cylindrical body offers wide area contacts.
diagonalsOrder
Size
Dimensions
ABC
ball bearings
1/8″
5/32″
3/16″
7/32″
1/4″
5/16″
3/8″
.125″
.156″
.187″
.218″
.250″
.312″
.375″
.125″
.156″
.187″
.218″
.250″
.312″
.375″
.225″
.275″
.325″
.380″
.445″
.545″
.655″
Stainless Steel Available
Where complete freedom from rust is essential, we recommend 300 Series stainless steels. Most of these shapes are available in this corrosion-resistant material.

Let our lab determine the proper media for your parts
* Precise roundness is not required for the majority of steel media finishing applications. Thus, two small flat spots at opposite poles are not objectionable. Pole-flattened balls are less expensive to manufacture and customers benefit from these economies through lower prices.
** All decimal dimensions are approximately ± .010, with the exception that length of pins and diagonals are ± .020.