Linear Guideway Carriage (Block)

Product Specifications

Technical details and manufacturing context for Linear Guideway Carriage (Block)

Definition

The linear guideway carriage, commonly referred to as a block or slider, is the moving element of a linear guideway system. It houses the recirculating ball bearings and is mounted to the machine's moving platform. Its primary function is to convert the rolling motion of the balls into precise linear travel along the rail, carrying the applied load with high rigidity and accuracy. It is a critical sub-component within the broader 'Linear Guideways & Ball Screws' assembly, enabling the precise positioning required in automated machinery. The carriage is manufactured from materials such as carbon chrome steel (e.g., SUJ2) or stainless steel, depending on the application's environmental and load requirements. Key parameters include rail width (15–65 mm), carriage height (24–90 mm), dynamic load rating (8–200 kN per ISO 14728-1), static load rating (15–300 kN per ISO 14728-1), accuracy grade (C1–C5 per ISO 14728-2), repeatability (±0.001–±0.005 mm), maximum speed (2–5 m/s), operating temperature (-20–80 °C), lubrication type (grease), seal type (standard, with options for low-friction or heavy-duty), and mass (0.2–10 kg). These values are reference ranges; actual specifications must be confirmed with the manufacturer for the specific model. The carriage is designed to support radial, reverse radial, and lateral loads while maintaining smooth motion. It is essential for applications requiring high precision, such as CNC machines, semiconductor equipment, and automated assembly lines. Proper selection involves considering load, speed, accuracy, and environmental factors. Verification of standards and performance data should always be done with the legal manufacturer or supplier.

Working Principle

The carriage contains a load-bearing structure with raceways that align with those on the rail. Recirculating ball bearings roll within these raceways, minimizing friction. As force is applied, the balls circulate through a return path inside the carriage, allowing the block to slide smoothly along the fixed rail while supporting radial, reverse radial, and lateral loads. The recirculation mechanism ensures continuous motion and high load capacity. The carriage's rigidity and accuracy depend on the precision of the raceways and the quality of the balls. Proper lubrication and sealing are critical to maintain performance and prevent contamination.

Common Materials

Carbon Chrome Steel (e.g., SUJ2), Stainless Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rail Width	15–65 mm	Determines load capacity and stiffness
Carriage Height	24–90 mm	Affects mounting space and rigidity
Dynamic Load Rating	8–200 kN	Higher value for longer life under loadISO 14728-1
Static Load Rating	15–300 kN	Maximum load without permanent deformationISO 14728-1
Accuracy Grade	C1–C5	C1 highest precision, C5 standardISO 14728-2
Repeatability	±0.001–±0.005 mm	Critical for positioning applications
Maximum Speed	2–5 m/s	Limited by lubrication and seal design
Operating Temperature	-20–80 °C	Outside range may require special seals
Lubrication Type	Grease	Grease or oil; affects maintenance
Seal Type	Standard	Options: standard, low-friction, heavy-duty
Mass	0.2–10 kg	Affects inertia and mounting

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

End Seal / Wiper Part
Prevents contaminants like dust and chips from entering the ball recirculation path and retains lubrication.

Material: Synthetic Rubber
Ball Retainer / Cage Part
Maintains even spacing between the recirculating balls to prevent contact and reduce noise/heat.

Material: Synthetic Resin or Steel
Lubrication Port / Grease Fitting Part
Allows for the introduction of lubricant (grease or oil) into the ball raceways.

Material: Steel
Recirculating Ball Bearings
The rolling elements circulating through the raceways and return path.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Linear Guideway Carriage (Block).

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Linear Guideways & Ball Screws

View system integration details

Manufacturers of Linear Guideway Carriage (Block)

Manufacturer profiles associated with Linear Guideway Carriage (Block).

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Frequently Asked Questions

What is the function of a linear guideway carriage?

The carriage is the moving part of a linear guideway system. It houses recirculating ball bearings and moves along the rail, providing smooth, low-friction linear motion while supporting loads.

What materials are commonly used for the carriage?

Common materials include carbon chrome steel (e.g., SUJ2) and stainless steel. The choice depends on load, corrosion resistance, and environmental conditions.

How do I select the right carriage for my application?

Consider load capacity (dynamic and static), accuracy grade, repeatability, speed, operating temperature, and environmental factors. Always verify the specific model's parameters with the manufacturer.

What maintenance is required for the carriage?

Regular lubrication with grease is essential. Inspect seals for wear and contamination. Follow the manufacturer's maintenance schedule to ensure long life and performance.

Data Basis

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

Preliminary Technical Classification

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pressure:	Max 10 MPa (100 bar) static load capacity, varies by size/type
other spec:	Max velocity: 5 m/s, acceleration: 50 m/s², preload classes: P0 (no preload) to P2 (high preload)
temperature:	-20°C to +80°C (standard), up to +120°C with special seals/lubrication

Product Specifications

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