Vibratory Feed Bowl for Pharmaceutical Tablet Counting

Product Specifications

Technical details and manufacturing context for Vibratory Feed Bowl

Definition

A vibratory feed bowl is a critical component within pharmaceutical tablet counting and bottling machines. It uses controlled vibrations to move tablets from a bulk hopper, orient them correctly (e.g., with the logo facing up), and singulate them into a single-file stream for accurate counting and subsequent transfer into bottles or blister packs. Its design is crucial for preventing tablet damage, ensuring consistent feed rates, and maintaining high counting accuracy in pharmaceutical packaging lines. The bowl is typically fabricated from stainless steel (AISI 304/316L) with a smooth surface finish (Ra 0.4–0.8 µm) to meet pharmaceutical hygiene requirements. Key parameters include bowl diameter (300–800 mm), feed rate (100–1000 pcs/min), tablet diameter range (5–25 mm), orientation accuracy (±0.1 mm), operating voltage (220 ±10% V AC), power consumption (50–200 W), vibration frequency (50–60 Hz), amplitude (0.5–2.0 mm), operating temperature (0–40 °C), relative humidity (30–85%), weight (15–50 kg), and IP rating (IP54–IP65). These values are reference ranges; actual specifications must be confirmed with the manufacturer for the specific model and application. The bowl's design and tooling are tailored to the tablet's size, shape, and orientation requirements. Proper selection involves considering the tablet's physical properties, desired throughput, and integration with downstream counting and filling equipment. Verification questions should address material certifications, surface finish compliance, and performance testing under production conditions. Maintenance signals include abnormal vibration, reduced feed rate, or tablet jams, indicating wear or misalignment. Failure boundaries include operation outside specified temperature or humidity ranges, which may affect tablet flow and component longevity.

Working Principle

The bowl is mounted on a base containing an electromagnetic drive unit. When energized, this unit creates controlled, rapid vibrations. These vibrations, combined with the bowl's helical track or specially designed tooling (like grooves or pockets), cause tablets to climb the track. The motion separates and aligns the tablets, moving them in a single direction toward the discharge chute for counting. The vibration frequency and amplitude are adjustable to optimize feed rate and gentle handling.

Common Materials

Stainless Steel (AISI 304/316)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Bowl Diameter	300–800 mm	Determines capacity and footprint; larger bowls for higher throughput.
Feed Rate	100–1000 pcs/min	Depends on tablet size and track design; critical for line speed.
Tablet Diameter Range	5–25 mm	Standard pharmaceutical tablet sizes; custom tooling for other sizes.
Orientation Accuracy	±0.1 mm	Ensures consistent tablet position for counting and filling.
Operating Voltage	220 ±10% V AC	Standard single-phase supply; other voltages on request.
Power Consumption	50–200 W	Depends on bowl size and vibration amplitude.
Vibration Frequency	50–60 Hz	Mains frequency; adjustable via controller.
Amplitude	0.5–2.0 mm	Adjustable; affects feed rate and gentle handling.
Operating Temperature	0–40 °C	Typical cleanroom conditions; avoid condensation.
Relative Humidity	30–85 %	Non-condensing; higher humidity may affect tablet flow.
Material	304/316L	Stainless steel for pharmaceutical compliance; 316L for corrosive environments.ASTM A240
Surface Finish	Ra 0.4–0.8 µm	Smooth finish to prevent tablet sticking and ease cleaning.ISO 4287
Weight	15–50 kg	Depends on bowl size and material thickness.
IP Rating	IP54–IP65	IP65 for washdown; IP54 for dry areas.IEC 60529

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Bowl Part
The main container with an internal helical track that holds and guides tablets.

Material: Stainless Steel
Base with Drive Unit
Houses the electromagnetic drive that generates controlled vibrations to move the bowl.

Material: Cast Aluminum or Steel
Spring System Part
Leaf or coil springs that connect the bowl to the base, allowing and directing the vibratory motion.

Material: Spring Steel
Vibration Controller
Sets vibration frequency and amplitude, which is how feed rate and tablet handling are tuned.
Discharge Chute
Takes the single-file tablets off the bowl track and into the counting stage.

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Frequently Asked Questions

What materials are used for the vibratory feed bowl?

The bowl is typically made of stainless steel, specifically AISI 304 or 316L, as listed in the reference data. The material grade should be confirmed with the manufacturer for compliance with your specific pharmaceutical requirements.

What is the typical feed rate range?

The reference feed rate range is 100 to 1000 pieces per minute, depending on tablet size and track design. The actual achievable rate depends on the specific model and application, so it must be verified with the manufacturer.

How is orientation accuracy ensured?

Orientation accuracy is specified as ±0.1 mm, achieved through the bowl's tooling design and vibration parameters. This ensures consistent tablet position for counting and filling. Verification should be done through performance testing.

What are the operating environment limits?

The reference operating temperature is 0–40 °C and relative humidity 30–85% (non-condensing). Operating outside these ranges may affect tablet flow and component performance. Always confirm with the manufacturer for your specific conditions.

Data Basis

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Preliminary Technical Classification

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pressure:	Atmospheric (no pressure rating required)
feed rate:	Up to 5000 tablets/minute depending on configuration
temperature:	0°C to +40°C
tablet size range:	3-25 mm diameter
vibration frequency:	50-100 Hz typical

Vibratory Feed Bowl

Product Specifications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards