INDUSTRY COMPONENT

Support Bearing / Bushing

Support bearing/bushing for agitator head assembly providing radial support and reducing friction between rotating shaft and stationary housing.

Component Specifications

Definition
A precision mechanical component designed to support the rotating shaft within an agitator head assembly, maintaining proper alignment while minimizing friction and wear. It consists of either rolling-element bearings (ball or roller) or plain bushings (sleeve bearings) that interface between the shaft and housing, handling radial loads and ensuring smooth rotational motion in mixing applications.
Working Principle
Operates on the principle of reducing friction through either rolling contact (bearings with balls/rollers) or hydrodynamic lubrication (bushings). In agitator applications, it supports the shaft against radial forces generated by mixing action, maintaining concentricity while allowing free rotation with minimal energy loss.
Materials
Bearings: Chrome steel (AISI 52100), stainless steel (AISI 440C), ceramic hybrids. Bushings: Bronze (SAE 660), PTFE composites, oil-impregnated sintered metals, engineered polymers (PEEK, UHMW-PE).
Technical Parameters
ParameterTypical rangeNotes & selection driver
SealingDouble-lip contact seals or labyrinth seals
ClearanceC3 standard clearance (0.008-0.020 mm)
LubricationGrease-packed or oil-bath systems
Speed RatingUp to 3000 rpm
Load CapacityDynamic: 5-50 kN, Static: 8-80 kN
Temperature Range-40°C to +150°C

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

Standards
ISO 15, ISO 104, DIN 625, DIN 5412

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Bearing seizure due to lubrication failure
  • Contamination from process media
  • Corrosion in chemical environments
  • Fatigue failure from cyclic loading
  • Misalignment causing premature wear
FMEA Triads
Trigger: Inadequate lubrication or wrong lubricant type
Failure: Increased friction, overheating, seizure
Mitigation: Implement automatic lubrication systems, use compatible food-grade or chemical-resistant greases, establish maintenance schedules
Trigger: Process media ingress past seals
Failure: Contamination, corrosion, abrasive wear
Mitigation: Upgrade to double-lip seals or labyrinth seals, install protective covers, use corrosion-resistant materials
Trigger: Shaft misalignment during installation
Failure: Uneven load distribution, vibration, premature fatigue
Mitigation: Use laser alignment tools during installation, implement regular alignment checks, install flexible couplings

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
ISO 492 Class Normal for bearings, h7/H7 fit for bushings
Test Method
Vibration analysis per ISO 10816, temperature monitoring, lubricant analysis, dimensional verification per ISO 1132

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Support Bearing / Bushing

Manufacturer profiles associated with Support Bearing / Bushing.

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Frequently Asked Questions

What is the difference between support bearings and bushings in agitator applications?

Bearings use rolling elements (balls/rollers) for lower friction at higher speeds, while bushings provide larger contact areas for better shock absorption and are often self-lubricating. Bearings offer higher precision, bushings handle more contamination.

How often should agitator support bearings be replaced?

Typical service life is 10,000-20,000 operating hours depending on load, speed, and environment. Regular vibration analysis and temperature monitoring can predict failure before catastrophic breakdown occurs.

Can support bearings handle both radial and axial loads in agitators?

Standard support bearings primarily handle radial loads. For combined loads, angular contact bearings or tapered roller bearings are recommended. Most agitator designs separate radial and axial load handling.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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