Linear Guideway Rail

Product Specifications

Technical details and manufacturing context for Linear Guideway Rail

Definition

The Linear Guideway Rail is the stationary track component in linear guide systems, designed to support and guide moving carriages or sliders with high precision and load capacity. It serves as the foundational element that ensures straight, smooth, and accurate linear movement in machinery and automation equipment. The rail is manufactured from carbon steel, stainless steel, or alloy steel, and is typically induction hardened to a surface hardness of 58–62 HRC (per ISO 683-17). Available rail widths range from 15 to 65 mm, heights from 15 to 90 mm, and lengths from 1000 to 6000 mm, with custom lengths available. Accuracy grades per ISO 12085 range from C1 (highest precision) to C5 (general purpose), with running parallelism over 1000 mm length between 0.003 and 0.023 mm. Dynamic load ratings (for 100 km travel life) are 8–120 kN, and static load ratings are 15–250 kN, both per ISO 14728-1. The rail operates in temperatures from -20°C to 80°C, with maximum speeds of 5–10 m/s depending on lubrication and accuracy. Recommended lubrication is grease, typically lithium soap grease. Mounting hole pitch ranges from 60 to 120 mm, and weight per meter varies from 1.5 to 15 kg. These values are directory reference ranges; actual specifications must be confirmed with the legal manufacturer or supplier for the specific model and application. The rail's precision-ground running surface minimizes friction and wear, ensuring reliable positioning in CNC machines, robotics, and other automation equipment.

Working Principle

The rail provides a hardened, precision-ground running surface along which ball bearings or rollers in the carriage/slider travel. This minimizes friction and wear while maintaining alignment, enabling precise linear positioning and motion control. The rail's straightness and surface finish are critical for achieving the specified accuracy grades. The carriage contains recirculating balls or rollers that roll on the rail's raceways, distributing load and reducing contact stress. Proper lubrication, typically grease, forms a thin film that separates the rolling elements from the rail surface, reducing friction and preventing metal-to-metal contact. The rail's mounting holes allow secure attachment to a machine base, ensuring rigidity and stability. The system's performance depends on correct installation, preload, and alignment, as well as regular maintenance to prevent contamination and wear.

Common Materials

Carbon steel, Stainless steel, Alloy steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rail Width	15–65 mm	Standard series sizes
Rail Height	15–90 mm	Determines load capacity and stiffness
Rail Length	1000–6000 mm	Custom lengths available
Accuracy Grade	C1–C5	C1 highest precision, C5 general purposeISO 12085
Running Parallelism	0.003–0.023 mm	Per 1000 mm lengthISO 12085
Dynamic Load Rating	8–120 kN	For 100 km travel lifeISO 14728-1
Static Load Rating	15–250 kN	Maximum allowable static loadISO 14728-1
Rail Hardness	58–62 HRC	Induction hardenedISO 683-17
Operating Temperature	-20–80 °C	Continuous operation
Maximum Speed	5–10 m/s	Depends on lubrication and accuracy
Lubrication Type	Grease	Lithium soap grease recommended
Mounting Hole Pitch	60–120 mm	Standard pitch for rail mounting
Weight per Meter	1.5–15 kg/m	Varies with rail size

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

Running Surface Part
Precision-ground track for ball/roller contact

Material: Hardened steel
End Caps Part
Protect rail ends and prevent contamination

Material: Plastic or rubber

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 Rail

Manufacturer profiles associated with Linear Guideway Rail.

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Frequently Asked Questions

What materials are available for the linear guideway rail?

The rail can be made from carbon steel, stainless steel, or alloy steel. The choice depends on the application's requirements for corrosion resistance, strength, and cost. Verify the specific material grade with the manufacturer.

What accuracy grades are available?

Accuracy grades range from C1 to C5 per ISO 12085, with C1 being the highest precision and C5 for general purpose. The grade affects running parallelism and other geometric tolerances. Confirm the required grade for your application.

What is the maximum operating temperature?

The rail can operate continuously in temperatures from -20°C to 80°C. For higher temperatures, consult the manufacturer for special materials or coatings.

How should the rail be lubricated?

Grease lubrication is recommended, typically lithium soap grease. The lubrication type and interval depend on operating conditions such as speed, load, and environment. Follow the manufacturer's guidelines for maintenance.

Data Basis

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

Preliminary Technical Classification

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pressure:	N/A (mechanical load bearing, not fluid pressure)
other spec:	Max dynamic load: 5-50 kN (varies by size), Max speed: 5 m/s, Accuracy grade: Normal (N), High (H), Precision (P), Super Precision (SP)
temperature:	-20°C to 80°C (standard), -40°C to 120°C (special grades)

Product Specifications

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