INDUSTRY COMPONENT

High-Precision Bearing

High-precision bearing for ultra-accurate rotational motion control in industrial actuators.

Component Specifications

Definition
A specialized rolling-element bearing engineered for minimal radial/axial runout, low friction, and exceptional dimensional stability under varying loads and speeds, enabling precise angular positioning in theta (rotation) actuators.
Working Principle
Utilizes precisely ground balls or rollers between inner and outer rings to reduce friction and maintain consistent rotational accuracy through controlled preload and optimized raceway geometry.
Materials
Bearing rings: AISI 52100 chrome steel or ceramic (Si3N4); Rolling elements: steel or ceramic; Cage: machined brass, polyamide, or stainless steel.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Width9-23 mm
Max Speed10,000-30,000 rpm
Axial Runout< 3 μm
Radial Runout< 2 μm
Inner Diameter10-50 mm
Outer Diameter30-90 mm
Precision GradeABEC 7/9 or P4/P2
Static Load Rating3-15 kN
Dynamic Load Rating5-25 kN
Operating Temperature-30°C to +120°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 492, DIN 620

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Contamination from dust/lubricant degradation
  • Improper preload causing premature wear
  • Thermal expansion affecting clearance
  • Misalignment during installation
FMEA Triads
Trigger: Contaminant ingress (dust, moisture)
Failure: Increased friction, pitting, noise, reduced accuracy
Mitigation: Use sealed/shielded bearings; maintain clean environment; regular lubrication checks
Trigger: Excessive preload or misalignment
Failure: Overheating, brinelling, shortened bearing life
Mitigation: Follow manufacturer torque specs; use alignment tools; monitor temperature

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
Radial runout tolerance ≤ 2 μm per ISO 492 P4 standards
Test Method
Laser interferometry for runout measurement; vibration analysis for noise; accelerated life testing under load

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 High-Precision Bearing

5 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

BY Bearings (Luoyang Boying Bearing Co., Ltd.)
Henan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “High Precision Bearings”
View source page ↗ bybearings.com · checked 2026-09-01
Decent Machinery Co., Ltd.
Wuhan, Hubei, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “6310 high precision bearing”
View source page ↗ decentmachinery.com · checked 2026-09-10
LKPB Bearing
Luoyang, Henan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “high-precision bearings”
View source page ↗ lkpbearing.com · checked 2026-09-17
VXO
Suzhou, Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Types of High Precision Bearings”
View source page ↗ vxolinearmotion.com · checked 2026-09-08
XCC Group
Shaoxing, Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “High Precision Bearings”
View source page ↗ xccbearing.com · checked 2026-09-04

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Share this page

Related Components

Chrome Plating
Hard chrome plating is an electroplating process that deposits a layer of chromium onto metal surfaces to enhance wear resistance, corrosion protection, and reduce friction for hydraulic cylinder piston rods.
Upper Tool (Punch)
Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.
Main Frame
The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.
Shaft Bearing
Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.

Frequently Asked Questions

What distinguishes a high-precision bearing from a standard bearing?

High-precision bearings have tighter tolerances (e.g., ABEC 7/9 grades), superior surface finish, controlled preload, and minimal radial/axial runout (<5 μm) for exact rotational accuracy.

How does bearing preload affect theta actuator performance?

Proper preload eliminates internal clearance, reduces vibration, and enhances stiffness, critical for maintaining positional accuracy and repeatability in rotational movements.

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.

Request Manufacturing Insight for High-Precision Bearing

Thank you. Your request has been sent. We'll respond within 1–3 business days.
Sorry, we couldn't send your message. Please try again, or email us at [email protected].
Yoke Bracket
Get QuotesChat