Used Mills for Sale
Used mills are industrial size reduction systems designed to grind, crush, or refine materials into smaller particle sizes for further processing. These systems are widely used in chemical processing, food production, pharmaceuticals, minerals, and plastics industries where particle size control is critical to product performance and consistency. Mills support processes such as grinding, pulverizing, dispersion, and homogenization across a wide range of materials. Aaron Equipment offers used mills for sale in various configurations to meet specific size reduction requirements, capacities, and material characteristics. Browse available inventory below or explore mill types to find equipment aligned with your application.
Stock No.:
48417002Used Sturtevant Sample Grinder – Model 2-10, 100-400 lbs/hr Capacity, Carbon Steel
Used- Sturtevant Sample Grinder, Model 2-10, Carbon Steel. Approximate capacity 100 to 400 pounds per hour, product size 20 to 100 mesh. (1) 10" diameter grinding disc, driven by a 3 hp, 3/60/208-230/460 volt, 1750 rpm motor. Hinged door with (1) 10" diameter stationary grinding disc. Approximate top inlet 6-1/4" x 2-1/4", bottom outlet 6-3/4" x 4-3/8". Mounted on a carbon steel frame. Serial #1170.
MFR: Sturtevant
Stock No.:
52710004Pre-Owned Paul O Abbe Jar Rolling Mill – 3” x 60” Rolls, 86-258 RPM
Used- Paul O Abbe Single Tier Jar Rolling Mill Enclosure, Model JRM. 3" Diameter x 60" wide rolls. Roll speed: 86 to 258 rpm, set rolls at 169 rpm. Approximate 3/4hp, 3/60/230/460 volt, motor. Sound attenuated enclosure. Mounted on fork-liftable base. Serial# A35796. Capable of being two-tier. ***THIS MACHINE IS OFFERED FOR RENTAL. ASK AN AARON EQUIPMENT PROFESSIONAL FOR MORE INFORMATION***
MFR: Paul O Abbe
Stock No.:
11059397Used ROSS HSM-430SC Inline High Shear Mixer with SLIM Powder Injection System – 30 HP Explosion Proof Mixing Platform
Used ROSS HSM-430SC Inline High Shear Mixer with SLIM Powder Injection System 30 HP Explosion Proof Mixing Platform. Solids (powder) / Liquid Injection Manifold (SLIM). Equipped with 3" Liquid inlet, 2.5" Powder Inlet and 3" Liquid outlet. Driven by 30 HP, 208-230/460 volt, 1760 rpm Explosion Proof (XP) Motors. Powder / Liquid Dispersing / Mixing System. The Liquid stream enters the mixer and immediately encounters the powder (solids) at the high shear zone (rotor and stator assembly). The resulting dispersion is expelled centrifugally through the stator opening at high velocity.
MFR: Ross Industries
Stock No.:
50388107Used IKA Works Dispax Reactor – High Shear Inline Disperser, Model DR 2000/10, 30 HP
Used- IKA Works Dispax Reactor High Shear Inline Disperser, Model DR 2000/10, Stainless Steel. Nominal flow rate 35 gallons per minute (8,000 l/h), nominal tip speed 4500 feet per minute. Driven by a 30hp, 3/60/230/460 volt, 3525 rpm motor. 2" Inlet & outlet. Unit mounted on a base. Part# P015742. Serial # 2599-12.
MFR: IKA Works
Stock No.:
54687116Used SPX Waukesha model CMP stainless steel horizontal colloid mill. Serial number 1000002960246. It has a conical grooved rotor and stator. The inlet and outlet are 2" sanitary threaded. This unit i...
Used-SPX Waukesha model CMP stainless steel horizontal colloid mill. Serial number 1000002960246. It has a conical grooved rotor and stator. The inlet and outlet are 2" sanitary threaded. This unit is all mounted on a stainless steel base. The mill is driven by a 25 hp electric motor. 575 vac 3 ph power required.
MFR: SPX
Stock No.:
54698001Used Quadro Comil Model 198 Stainless Steel Conical Mill – 30 HP
Used Quadro Comil Model 198 Stainless Steel Conical Screen Mill With 30 HP Drive, Built 2024. High-capacity industrial milling and particle size reduction system designed for controlled grinding, deagglomeration, delumping and sizing of compatible dry powders, granules and bulk solid materials. Rated for processing capacities up to 16,000 lbs per hour, depending on product characteristics, screen configuration and application. Features 304 stainless steel construction with 316 stainless steel impeller and screens for product processing. Operates at speeds ranging from approximately 200 to 900 RPM, providing flexibility for different material processing requirements and particle size specifications. Driven by a 30 HP WEG motor operating on 230/460 volts, 3-phase, 60 Hz electrical service. Serial #1980262. Manufactured in 2024. Possible applications include dry powder milling, granule sizing, deagglomeration, particle size reduction and processing of compatible pharmaceutical powders, nutraceutical ingredients, food powders, sugar, salt, starch, powdered chemicals, mineral powders, pigments, polymer additives and other suitable dry bulk solids.
MFR: Quadro
Stock No.:
83818Industrial Three Roll Mill - Keith Machinery 4” x 8” Cored Rolls
Used- Keith Machinery Horizontal Three Roll Mill, Model 4X8. (3) 4" Diameter x 8" wide cored rolls. Adjustable end guides, knife scraper with discharge pan. Driven by an approximate 1 hp motor. Serial # 95021B.
MFR: Keith Machinery
Stock No.:
54444001Unused Paul O. Abbe BM-223 Ball Mill – Stainless Steel Industrial Grinding Mill
Unused Paul O. Abbe Model BM-223 all-stainless-steel ball mill with a 2-degree tapered cylinder for full discharge and split, hinged clamshell dry discharge housing. Mill cylinder measures 40" diameter x 44" long inside the shell with 5/8" shell thickness, 304 stainless steel product-contact construction, and 32 RA internal finish with 180 grit polish. Welded lifter bars terminate 1.5" from the ends, with welds ground to a minimum 1/4" radius and finished pit-free. Total mill volume is 32 cubic feet / 234 gallons with an 8 cubic foot dry working volume, equal to 25% of total volume. Unit includes a 13.25" x 14.75" rectangular cover hatch, contoured stainless steel grinding cover, and stainless steel dry discharge cover with 0.25" slots. The dry discharge housing fully encloses the cylinder and incorporates the patented 2-degree taper for full discharge, stainless steel counterweights, nominal 60-degree chute/hopper, 12" square bottom discharge opening, 48" discharge height, and sliding UHMW top cover. Driven by an SEW hollow-bore 20 HP TEFC motor rated for 230/460V, 3-phase, 60 Hz operation with nominal cylinder speed of 24 RPM. Unit is supported by two welded carbon steel A-frame stands with height extensions and Sherwin-Williams Tile Clad epoxy coating. Overall dimensions are approximately 138" high x 105" long x 64" deep. Possible applications and suitable products include dry batch grinding, milling, blending, and size reduction of compatible powders, pigments, ceramics, chemicals, minerals, and other dry solid materials.
MFR: Paul O Abbe
Stock No.:
54687021Used Charlotte SD-40 40 HP 316 Stainless Steel Colloid Mill
Used Chemicolloid Industries Charlotte Model SD-40 type 316 stainless steel horizontal inline colloid mill designed for processing pumpable slurry products. Unit is mounted on a common stainless steel base and driven by a 40 hp, 230/460 VAC, 3-phase, 60 Hz, 3,565 rpm motor. Rated for production rates up to approximately 1,200 gallons per hour depending on the product being processed. Equipped with an adjustable-gap rotor for controlled high-shear particle size reduction and capable of partial reduction down to approximately 3-5 microns depending on the material, application and machine configuration. Process connections are 3" OD / 2" ID threaded fittings. Last used in the food industry. Includes motor starter. Serial #4211. Possible applications include emulsification, homogenization, dispersion and particle size reduction of compatible sauces, dressings, mayonnaise, syrups, purees, creams, lotions, suspensions, slurries and other pumpable food, cosmetic, pharmaceutical and chemical products.
Stock No.:
40426004Unused Sonic Colloid Roto-Mill RM4 | 4" High-Shear Sanitary Colloid Mill (316L SS)
Unused Sonic Colloid Roto-Mill, Model RM4. 4" size. 316L stainless contact surfaces. 10-50 GPH gravity flow rate, 150-600 GPH pressure feed rate. Driven by a 5 HP, 3600 RPM, 3ph/230/460V motor. With controls. Mounted on cart with casters. Built 2024.
MFR: Sonic
Stock No.:
40426005Sonic RM4 Sanitary Colloid Mill | Unused 4" High-Shear Roto-Mill
Sonic RM4 Sanitary Colloid Mill | Unused 4" High-Shear Roto-Mill. 316L stainless contact surfaces. 10-50 GPH gravity flow rate, 150-600 GPH pressure feed rate. Driven by a 5 HP, 3600 RPM, 3ph/230/460V motor. With controls. Mounted on cart with casters. Built 2024.
MFR: Sonic
Stock No.:
40426006Unused Sonic RM4 Colloid Roto-Mill | High-Shear Inline Processing System
Unused Sonic RM4 Colloid Roto-Mill | High-Shear Inline Processing System. 4" size. 316L stainless contact surfaces. 10-50 GPH gravity flow rate, 150-600 GPH pressure feed rate. Driven by a 5 HP, 3600 RPM, 3ph/230/460V motor. With controls. Mounted on cart with casters. Built 2024.
MFR: Sonic
Types of Used Mills Available
Aaron Equipment offers a range of used mills designed to support size reduction, grinding, and material processing applications:
Hammer Mills – High-speed impact mills used to crush and grind materials into smaller particles through repeated hammering action.
Ball Mills – Rotating mills that use grinding media to reduce material size through impact and attrition.
Roller Mills – Compression mills that reduce material size by passing it between rotating rollers for controlled particle sizing.
Colloid Mills – High-shear mills designed for emulsifying, dispersing, and fine grinding of liquids and semi-solids.
Pin Mills – Fine grinding mills that use intermeshing pins to achieve uniform particle size reduction.
Sand & Media Mills – Wet grinding mills that use media agitation for fine dispersion and particle size reduction in slurries.
Mill Applications & Industry Uses
Used mills are essential across industries where particle size reduction and material conditioning are required. Common applications include:
Chemical Processing: Grinding powders, pigments, and intermediates
Food & Beverage: Milling grains, spices, and ingredients
Pharmaceutical Manufacturing: Fine particle size reduction for formulations
Minerals & Mining: Crushing and grinding ores and aggregates
Plastics & Polymers: Size reduction of pellets and regrind materials
These systems improve material consistency, increase surface area, and enhance downstream processing efficiency.
Used Mill Buying Considerations
When selecting a used mill, it is important to evaluate both process requirements and equipment condition:
Material Characteristics: Hardness, moisture content, and abrasiveness
Particle Size Requirements: Desired output size and uniformity
Grinding Method: Impact, compression, or attrition depending on application
Throughput Capacity: Match system output with production needs
Wear Components: Evaluate liners, hammers, or grinding media condition
Condition & Maintenance History: Review prior usage and service records
Why Buy Used Mills
Buying used mills provides a cost-effective solution for implementing size reduction systems without the long lead times of new equipment. Used mills offer proven performance and are often available for immediate shipment, helping facilities maintain production schedules and reduce capital investment.
Aaron Equipment sources high-quality mills from leading manufacturers, providing reliable solutions for demanding industrial grinding and processing applications.
Sell Your Used Mills
Aaron Equipment actively purchases surplus mills and size reduction equipment across all configurations. Whether upgrading equipment or liquidating assets, our team can help maximize value.
An industrial mill is a machine used to reduce the size of materials through grinding, crushing, or pulverizing. Mills are used to process solids into smaller particles for further manufacturing or processing.
Common types include hammer mills, ball mills, roller mills, colloid mills, pin mills, and media mills. Each type is designed for specific materials and size reduction methods.
Choosing the right mill depends on material properties, desired particle size, throughput requirements, and the appropriate grinding method for your process.
Yes. Used mills are built for long service life and can remain highly reliable when properly maintained, inspected, and refurbished if necessary.
Mills are used in chemical processing, food production, pharmaceuticals, mining, and plastics industries where size reduction is essential.