Carriage Block (Slider): Travel Speed Up to 5 m/s

Component Specifications

Definition

The carriage block, also known as a slider or runner block, is a critical component of linear guide systems used in industrial automation and machinery. It houses recirculating ball or roller elements that interface with precision-ground rails, enabling controlled linear movement with minimal friction and high rigidity. Designed to support loads in multiple directions (radial, reverse radial, and lateral), it ensures accurate positioning and repeatability in applications requiring precise motion control.

Working Principle

The carriage block operates on the principle of recirculating rolling elements (balls or rollers) that circulate within a closed loop between the block and the rail. As the block moves along the rail, these elements reduce friction through rolling contact, distributing loads evenly and maintaining smooth motion. Preload adjustments and sealing mechanisms enhance performance by minimizing play and protecting against contaminants.

Materials

Typically made from high-carbon chromium bearing steel (e.g., SUJ2/SAE 52100) or stainless steel (e.g., AISI 440C) for durability and corrosion resistance. Components may include hardened steel races, plastic or metal seals, and aluminum or steel housings.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Lubrication	Grease or oil, with intervals of 1,000-10,000 km
Travel Speed	Up to 5 m/s
Load Capacity	Dynamic: 10-50 kN, Static: 15-75 kN
Precision Grade	Normal (C), High (H), Precision (P), Ultra-Precision (UP)
Mounting Hole Pattern	Standardized (e.g., 4-8 holes per block)
Operating Temperature	-10°C to 80°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 14728, DIN 645

Parent Products

This component is used in the following industrial products

Linear Guide System

A precision mechanical system that provides smooth, accurate linear motion for machine tool components.

View Product Details

Engineering Analysis

Risks & Mitigation

Overloading leading to premature wear
Contamination causing seizing or noise
Misalignment reducing accuracy and lifespan
Inadequate lubrication increasing friction

FMEA Triads

Trigger: Contamination from dust or debris
Failure: Increased friction, seizing, or scoring of rails
Mitigation: Use sealed carriage blocks, implement regular cleaning, and operate in controlled environments.

Trigger: Excessive preload or misalignment during installation
Failure: Reduced travel life, overheating, or binding
Mitigation: Follow precise mounting procedures, use alignment tools, and verify preload settings per specifications.

Trigger: Insufficient or improper lubrication
Failure: Wear, corrosion, or increased operational noise
Mitigation: Adhere to lubrication schedules, use recommended greases or oils, and monitor condition periodically.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Dimensional tolerances per ISO 286, with precision grades (e.g., ±0.005 mm for high-grade blocks)

Test Method

Performance testing per ISO 14728, including load capacity, friction force, and durability under simulated operating conditions.

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 Carriage Block (Slider)

Manufacturer profiles associated with Carriage Block (Slider).

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Shaft Bearing

Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.

Seal Groove

Precision-machined groove in aluminum bearing housings designed to accommodate sealing elements for fluid containment and contamination prevention.

Frequently Asked Questions

What is the difference between a carriage block and a linear bearing?

A carriage block is a complete assembly that includes the housing, rolling elements, and seals, designed to mount directly onto machinery. A linear bearing typically refers to the internal rolling element component alone, often used in simpler applications.

How do I select the right carriage block for my application?

Consider load capacity (dynamic and static), precision grade, speed requirements, environmental conditions (e.g., dust, moisture), and compatibility with existing rail systems. Refer to manufacturer catalogs and standards like ISO 14728 for guidance.

What maintenance is required for carriage blocks?

Regular lubrication based on operating conditions, inspection for wear or contamination, and cleaning of seals. Follow manufacturer recommendations, typically every 1,000-10,000 km of travel.

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.

Carriage Block (Slider)