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Linear Guide Rails/Bearings Component – Machinery and Equipment Manufacturing

Component Specifications

Definition

Linear guide rails and bearings are mechanical systems consisting of a hardened steel rail and a carriage with recirculating ball or roller bearings. They enable precise linear movement with minimal friction, high rigidity, and accurate positioning in automation equipment, CNC machines, and robotic systems.

Working Principle

The system operates by using recirculating ball or roller bearings within a carriage that moves along a precision-ground rail. The bearings reduce friction through rolling contact, while the rail provides a rigid guide path. Preload adjustment ensures proper clearance and stiffness for accurate motion control.

Materials

Rails: Hardened carbon steel (e.g., S55C, SUJ2) or stainless steel (e.g., SUS440C). Carriages: Carbon steel or aluminum alloy. Balls/Rollers: Chrome steel (G10) or ceramic. Seals: Synthetic rubber or polyurethane.

Technical Parameters

Preload Zero, Light, Medium, Heavy
Lubrication Grease or oil, interval: 100-1000 km
Travel Life 10,000-100,000 km
Load Capacity Dynamic: 5-50 kN, Static: 10-100 kN
Accuracy Grade Normal (C), High (H), Precision (P), Super Precision (SP)
Operating Temperature -20°C to +80°C

Standards

ISO 10285, ISO 14728, DIN 645, JIS B 1192

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Linear Guide Rails/Bearings.

Parent Products

This component is used in the following industrial products

Insertion Actuator

A precision mechanical component that provides controlled linear motion to insert vibration motors into assemblies.

View Product Details

Engineering Analysis

Risks & Mitigation

Contamination leading to premature wear
Improper installation causing misalignment
Insufficient lubrication resulting in increased friction
Overload beyond rated capacity

FMEA Triads

Trigger: Dust or debris ingress
Failure: Increased friction, scoring of rail surface, reduced accuracy
Mitigation: Install protective covers, use sealed carriages, implement regular cleaning protocols

Trigger: Incorrect preload adjustment
Failure: Excessive play or binding, reduced positioning accuracy, accelerated wear
Mitigation: Follow manufacturer torque specifications, use calibrated tools, verify alignment after installation

Trigger: Corrosion in humid environments
Failure: Pitting of rail surface, increased friction, seizure of carriage
Mitigation: Select stainless steel or coated rails, apply corrosion inhibitors, maintain proper environmental controls

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

Rail straightness: ≤5 μm/300 mm, Height variation: ≤10 μm, Parallelism: ≤15 μm

Test Method

Coordinate measuring machine (CMM) verification, laser interferometer for straightness, load testing per ISO 14728

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the difference between ball and roller type linear guides?

Ball guides offer lower friction and higher speed, while roller guides provide higher load capacity and rigidity. Ball types are ideal for precision positioning, roller types for heavy-duty applications.

How often should linear guides be lubricated?

Lubrication intervals depend on operating conditions: typically every 100-1000 km of travel or 3-6 months. Use manufacturer-recommended grease or oil to prevent wear and corrosion.

Can linear guides be used in dirty or wet environments?

Yes, with appropriate seals and protective covers. Choose models with IP65 or higher ratings for dust and water resistance, and use stainless steel or coated rails for corrosion protection.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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.

Linear Guide Rails/Bearings