Pharmaceutical Tablet Press Compression Roller Bearing

Product Specifications

Technical details and manufacturing context for Pharmaceutical Tablet Press Compression Roller Bearing

Definition

This precision rolling-element bearing is engineered to support the compression rollers inside pharmaceutical tablet press machines. It enables smooth, low-friction rotation of the rollers during tablet compaction while maintaining precise alignment under significant axial and radial loads. The bearing is critical for consistent tablet weight, thickness, and hardness by providing stable rotational motion. Its design prioritizes cleanability, corrosion resistance, and durability in pharmaceutical manufacturing environments.

Typical specifications include a bore diameter of 25–60 mm, outside diameter of 52–110 mm, and width of 15–28 mm, per ISO 15. Dynamic load rating (C) ranges from 14–75 kN (ISO 76), and limiting speed with grease lubrication is 4000–9000 rpm (ISO 15312). Radial clearance is C3 (ISO 5753-1), vibration grade V2 (ISO 15242), and operating temperature range is -40 to 120°C (above 120°C requires special grease). Material grades on file include stainless steel (316L/440C) and ceramic (silicon nitride), with a high-carbon chromium steel grade GCr15 (GB/T 18254) listed. Sealing type is contact seal (RS) to prevent powder ingress, and lubrication is factory pre-greased with a relubrication interval of 500 hours. Weight ranges from 0.2–1.5 kg.

These values are reference ranges for directory purposes; actual model-specific values must be verified with the legal manufacturer or supplier. Standards listed are procurement references and do not imply certification or compliance of any specific product. Always confirm suitability for your application, including load, speed, and environmental conditions.

Working Principle

The bearing uses an inner and outer race with rolling elements (balls or rollers) to convert sliding friction into rolling friction. This allows the compression roller shaft to rotate smoothly while supporting mechanical loads from the tablet compaction process. The rolling elements are separated by a cage to prevent metal-to-metal contact and reduce wear. The bearing's internal geometry and clearance (C3) accommodate thermal expansion and misalignment. Seals (RS) protect against powder ingress, and pre-greasing ensures initial lubrication. The design maintains precise alignment under axial and radial loads, contributing to consistent tablet quality.

Common Materials

Stainless Steel (316L/440C), Ceramic (Silicon Nitride)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Bore DiameterRequired	25–60 mm	Precision inner diameter for shaft fitISO 15
Outside DiameterRequired	52–110 mm	Overall bearing outer diameterISO 15
WidthRequired	15–28 mm	Axial bearing widthISO 15
Dynamic Load Rating (C)Required	14–75 kN	Radial load capacity for 1 million revolutionsISO 76
Limiting SpeedRequired	4000–9000 rpm	Maximum rotational speed with grease lubricationISO 15312
Radial Clearance	C3 μm	Internal radial play (C2/CN/C3)ISO 5753-1
Operating Temperature	-40–120 °C	Above 120°C requires special grease
Vibration Grade	V2	Low vibration for smooth tablet pressingISO 15242
Material Grade	GCr15	High-carbon chromium steel for wear resistanceGB/T 18254
Sealing Type	RS	Contact seal prevents powder ingress
Lubrication	Grease	Factory pre-greased; relubrication interval 500 h
Weight	0.2–1.5 kg	Affects handling and dynamic balance

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

Inner Race Part
Mounts on roller shaft, provides rolling surface

Material: Stainless Steel
Outer Race Part
Houses bearing in housing, provides outer rolling surface

Material: Stainless Steel
Rolling Elements Part
Balls or rollers that reduce friction between races

Material: Stainless Steel or Ceramic
Cage/Retainer Part
Separates and guides rolling elements

Material: Stainless Steel or Polymer
Seal/Shield Optional Part
Protects internal components from contamination

Material: FKM or PTFE

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Pharmaceutical Tablet Press Compression Roller Bearing.

Manufacturers of Pharmaceutical Tablet Press Compression Roller Bearing

Manufacturer profiles associated with Pharmaceutical Tablet Press Compression Roller Bearing.

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Frequently Asked Questions

What is the typical bore diameter range for this bearing?

The bore diameter typically ranges from 25 to 60 mm, per ISO 15. However, the exact value depends on the specific model and application. Always verify with the manufacturer or supplier.

What materials are available for this bearing?

Materials on file include stainless steel (316L/440C) and ceramic (silicon nitride). A high-carbon chromium steel grade GCr15 (GB/T 18254) is also listed. Material selection affects corrosion resistance and wear performance.

What is the limiting speed with grease lubrication?

The limiting speed ranges from 4000 to 9000 rpm, per ISO 15312. This is a reference range; actual speed capability depends on load, lubrication, and operating conditions. Confirm with the manufacturer.

How often should the bearing be relubricated?

The bearing is factory pre-greased, and the relubrication interval is typically 500 hours. However, this can vary based on operating conditions. Follow the manufacturer's maintenance recommendations.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 50 MPa dynamic, 100 MPa static
other spec:	Speed: Up to 500 RPM, Lubrication: Food-grade grease required, Cleanliness: ISO 4406 Class 14/12/9 or better
temperature:	-20°C to 120°C