Ball Mills

Our combined experience in ball mill design and process equipment development totals more than 60 years and allows us to put a unique spin on steel and lined mills.

Particle size reduction of materials in a ball mill with the presence of metallic balls or other media dates back to the late 1800’s. The basic construction of a ball mill is a cylindrical container with journals at its axis. The cylinder is filled with grinding media (ceramic or metallic balls or rods), the product to be ground is added and the cylinder is put into rotation via an external drive causing the media to roll, slide and cascade. Lifting baffles are supplied to prevent the outer layer of media to simply roll around the cylinder.

At Orbis Machinery we offer a variety of drive options to suit your needs:

  • Standard shaft mount reducer and belt drive
  • Gearwheel and pinion
  • Direct drive via in-line reducer
  • “Keyless” shafts

Mill cylinders are typically supplied with a cooling jacket on their cylindrical portion for temperature control, especially when processing temperature-sensitive materials. For extreme temperatures, the ends of the cylinder can also be furnished with cooling apparatus.

View a Reverse Engineered Patterson Ball Mill Cylinder

Sizes range from laboratory mills to 12′ in diameter.

Discharge Features

For discharge of the product on wet grinding processes we offer our standard media retention grate along with an adequate size discharge valve.

For discharge of the product on dry grinding processes we offer our dry media retention grate and housing.

BALL MILL LOADING GUIDE

Left: Standard 2 X 2 X 6 Tapered Tongue and groove cylinder alumina brick lining.
Right: One piece ceramic cover with silicone O Ring allows for leakproof operation.


Models

Steel Ball Mills

Model #Total Capacity
(Cu.Ft)
Cylinder
Diameter (in)
Cylinder
Length (in)
Cylinder speed
(60% critical)
HP (Wet)
(Stl media)
HP (Dry)
(Stl media)
SBM-1618-221618401/23/4
SBM-1723-331723393/41 1/2
SBM-2028-552028361 1/22
SBM-2431-8824313325
SBM-2535-101025353235
SBM-3037-151530372957 1/2
SBM-3340-20203340287 1/210
SBM-3846-30303846261015
SBM-4446-40404446241525
SBM-4652-50504652242030
SBM-4858-60604858232540
SBM-5558-80805558223050
SBM-6061-1001006061214075
SBM-6367-1201206367204075
SBM-6671-14014066712060100
SBM-7072-16016070721975125
SBM-7285-200200728519100150
SBM-7887-240240788718125200
SBM-78102-2802807810218125200

Other Popular Industry Standard Sizes

Model #Total Capacity
(Cu.Ft)
Cylinder
Diameter (in)
Cylinder
Length (in)
Cylinder speed
(60% critical)
HP (Wet)
(Stl media)
HP (Dry)
(Stl media)
SBM4848-50504848232030
SBM4860-63634860232540
SBM6060-98986060214075
SBM6072-11811860722150100
SBM7260-14114172601960100
SBM7272-17017072721975125

Lined Ball Mills

Model #Total Capacity
(Cu.Ft)
Cylinder
Diameter (Stl, in)
Cylinder
Length (Stl, in)
Cylinder speed
(60% critical)
HP (Wet)
(Alum media)
HP (Dry)
(Alum media)
Lining Thickness
(90% Alumina) (in)
LBM-1820-221820401/41/21
LBM-1925-331925391/23/41
LBM-2230-552230363/411
LBM-2633-8826333311-1/21
LBM-2737-10102737321-1/221
LBM-3239-1515323929251
LBM-3744-2020374428352
LBM-4250-30304250265102
LBM-4850-40404850247-1/2102
LBM-5056-505050562410152
LBM-5262-606052622310202
LBM-5962-808059622215252
LBM-6465-10010064652120302
LBM-6771-12012067712025402
LBM-7075-14014070752025402
LBM-7476-16016074761930502
LBM-7689-20020076891940602
LBM-8291-24024082911850752
LBM-82103-2802808210618601002

Other Popular Industry Standard Sizes

Model #Total Capacity
(Cu.Ft)
Cylinder
Diameter (Stl, in)
Cylinder
Length (Stl, in)
Cylinder speed
(60% critical)
HP (Wet)
(Alum media)
HP (Dry)
(Alum media)
Lining Thickness
(90% Alumina) (in)
LBM4848-393948482410152
LBM4860-494948602410152
LBM6060-808060602115252
LBM6072-979760722120302
LBM7260-11811872601925402
LBM7272-14314372721930502

ORBIS MACHINERY CAN MANUFACTURE ANY SIZE AND BRAND REPLACEMENT MILL CYLINDER BODY TO FIT ON YOUR CURRENT SUPPORT STANDS