Wet Grinding Equipment
Basket Bead Mill
SBM-500 and SBM-750 basket bead mills with 22 kW / 37 kW dispersing motors, 0–1300 / 0–1000 rpm, an 18 L cooled grinding basket and hydraulic lifting, supplied with 500 L or 750 L stainless steel vessels.
Request Specifications & Quote
Prepared from quotation BM2407-12 dated 2024-07-12 (Qinhuangdao Pengyi Intelligent Technology). Prices and commercial terms are intentionally not published. Explosion-protection class, grinding-media specification and vessel options require project confirmation.
Product Overview
How a basket bead mill works
The 18 L grinding basket is filled with beads and lowered into the product. A shaft drives the basket and its dispersing elements, creating a strong circulation that pulls material through the bead bed inside the basket and returns it to the batch. Because the beads stay in the basket, the machine needs no separate bead mill, feed pump or circulation pipework. When the batch reaches the target fineness, the hydraulic lift raises the basket and it drains.
Standard configurations
- BM-500/22 — 22 kW dispersing motor, 1.1 kW hydraulic lift, 0–1300 rpm, 1000 mm stroke, matched to a 500 L SS304 vessel (Ø900 × H850 mm).
- BM-750/37 — 37 kW dispersing motor, 1.5 kW hydraulic lift, 0–1000 rpm, 1200 mm stroke, matched to a 750 L SS304 vessel (Ø1000 × H1000 mm).
Both models use the same 18 L basket with a 0.4 mm gap and top cooling, NSK bearings, and a bowl clamp with position sensor. Explosion-proof motors are quoted; the exact class and certification scope must be confirmed for the installation.
Where the basket mill fits
Basket mills are used where a plant runs many formulations in modest batches and wants fast changeover with a contained cleaning scope: coatings and inks, pigment and dye dispersions, agrochemical suspensions, cosmetic pastes and fine-chemical dispersions. Compared with a horizontal bead mill in a circulation loop, the basket mill gives up some continuous throughput in exchange for flexibility and simpler cleaning.
What to provide for selection
Provide the formulation and solvent system, viscosity and rheology, batch size, vessel dimensions, initial and target particle size, permitted grinding-media material, temperature limits, explosion-protection classification, cleaning method and available floor space. These determine the model, media, vessel and lifting arrangement.
Related equipment
For small-scale formulation work, review the laboratory bead mill. For powder wetting before dispersion, review the high-speed disperser. For continuous fine grinding in a circulation loop, review the disc high-flow bead mill. To discuss a configuration, send your process requirements.
Equipment configuration
Core Features
- Two standard models: BM-500/22 with a 22 kW dispersing motor and BM-750/37 with a 37 kW motor.
- Shaft speed 0–1300 rpm (BM-500/22) or 0–1000 rpm (BM-750/37), matched to the basket and batch.
- 18 L grinding basket with a 0.4 mm basket gap and cooling at the top.
- Hydraulic lifting with a single-acting cylinder: 1000 mm stroke on BM-500/22, 1200 mm on BM-750/37.
- Bowl clamping device with position sensor for safe location of the vessel under the basket.
- NSK bearings and explosion-proof motors; supplied with a 500 L or 750 L SS304 vessel.
Configuration guide
Technical Specifications
| Models | BM-500/22 (SBM-500); BM-750/37 (SBM-750) |
|---|---|
| Installation | Floor-mounted |
| Dispersing motor | 22 kW (BM-500/22) / 37 kW (BM-750/37), Wannan, 380 V 50 Hz 3-phase, explosion-proof |
| Hydraulic lifting motor | 1.1 kW (BM-500/22) / 1.5 kW (BM-750/37), explosion-proof |
| Shaft speed | 0–1300 rpm (BM-500/22); 0–1000 rpm (BM-750/37) |
| Grinding basket | 18 L, 0.4 mm basket gap, cooling at the top |
| Lifting | Hydraulic, single-acting cylinder; 1000 mm (BM-500/22) / 1200 mm (BM-750/37) stroke |
| Bearing | NSK |
| Vessel | 500 L or 750 L, SS304, 5 mm shell + 4 mm jacket |
| Vessel clamping | Bowl clamping device with position sensor |
| Explosion protection | Explosion-proof motors; class and certification scope to be confirmed |
Reference specifications require material testing and engineering review. Final configuration is defined in the project technical agreement.
| Model | Dispersing motor | Lifting motor | Shaft speed | Basket volume | Basket gap | Lifting stroke |
|---|---|---|---|---|---|---|
| BM-500/22 | 22 kW, Wannan, 380 V 50 Hz 3-phase, explosion-proof | 1.1 kW, explosion-proof | 0–1300 rpm | 18 L | 0.4 mm | 1000 mm |
| BM-750/37 | 37 kW, Wannan, 380 V 50 Hz 3-phase, explosion-proof | 1.5 kW, explosion-proof | 0–1000 rpm | 18 L | 0.4 mm | 1200 mm |
| Vessel | Volume | Inner dimensions | Material |
|---|---|---|---|
| SBM-500 vessel | 500 L | Ø900 × H850 mm | SS304, 5 mm shell + 4 mm jacket |
| SBM-750 vessel | 750 L | Ø1000 × H1000 mm | SS304, 5 mm shell + 4 mm jacket |
Where it works
Application Industries
- Coatings
- Printing Inks
- Pigments and Dyes
- Agrochemicals
- Cosmetics and Personal Care
- Fine Chemicals
Technical questions
Frequently Asked Questions
What models are available?
Two standard configurations are quoted: BM-500/22 with a 22 kW dispersing motor and a 500 L vessel, and BM-750/37 with a 37 kW motor and a 750 L vessel. Both use the same 18 L grinding basket and hydraulic lifting principle.
What is a basket bead mill?
It is a wet grinding machine in which the grinding beads are held in a basket that is lowered into the product. The basket both retains the media and generates circulation, so grinding and dispersion happen in the same vessel without a separate mill, pump and piping loop.
How is it different from a horizontal bead mill?
A horizontal bead mill is normally part of a continuous circulation loop and is chosen for throughput and repeatable fine grinding. A basket mill is chosen for flexibility: it works batch by batch in the customer's vessel and is easier to clean between formulations.
What batch size does the BM-500/22 and BM-750/37 handle?
The quoted configurations pair the mills with 500 L and 750 L SS304 vessels respectively. Other batch sizes are project-specific; provide the required batch and vessel dimensions for a recommendation.
What are the shaft speed and basket data?
BM-500/22 runs at 0–1300 rpm and BM-750/37 at 0–1000 rpm. Both use an 18 L basket with a 0.4 mm gap and cooling at the top, with NSK bearings.
Which grinding media are used?
Media material and diameter depend on the product, target fineness and contamination limits, for example zirconia or glass beads in a suitable size range. The final choice must be confirmed by a material trial.
Is it suitable for high-viscosity products?
It can be evaluated for paste-like products, but viscosity affects circulation through the bead bed and the achievable fineness. Provide the viscosity and rheology so the basket, dispersing element and drive can be checked.
How is it cleaned?
The basket is raised and drained, then cleaned with solvent or cleaning agent; the media can be removed for inspection. Because there is no external mill loop, the cleaning scope is limited to the basket, shaft and vessel.
Can explosion protection be provided?
The quoted motors are explosion-proof. The exact class, certification scope and marking must be confirmed for the solvent system and site classification; do not treat the quotation wording as a certification for every atmosphere.
Engineering consultation
Discuss Your Process Requirements
Tell our engineers about your material, target particle size, viscosity, capacity, and production goals.