Linear Bearing Rail

Product Specifications

Technical details and manufacturing context for Linear Bearing Rail

Definition

The Linear Bearing Rail is a precision linear motion component used in machinery and equipment manufacturing. It serves as a hardened, precision-ground track that guides moving parts along a straight path with minimal friction and high accuracy. In a mast system, the rail provides the structural track for the mast assembly or attached components, working with linear bearings to ensure stable and precise positioning. The rail is available in hardened steel or stainless steel, with standard metric shaft diameters from 8 to 80 mm and rail lengths from 100 to 4000 mm (custom lengths available; longer rails may require splicing). Dynamic load ratings range from 0.5 to 120 kN, and static load ratings from 1 to 160 kN, based on ISO 14728-1. Travel accuracy grades C3 to C5 per ISO 10285, with repeatability of ±0.005 to ±0.02 mm. Maximum travel speed is 2 to 5 m/s, operating temperature -20 to 80 °C, and vibration amplitude ≤0.05 mm at 1 m/s and 50% load. Lubrication is grease (lithium soap) with optional oil; seal type is contact for dust protection. Rail material is bearing steel GCr15 per GB/T 18254, hardness 58-62 HRC per ISO 683-17, and weight per meter 0.5 to 15 kg. These values are directory reference ranges; verify model-specific specifications with the manufacturer or supplier.

Working Principle

The rail provides a hardened, precision-ground surface along which linear bearings travel. The bearings contain recirculating balls or rollers that roll between the rail and the bearing, converting sliding friction into rolling friction. This rolling contact reduces wear and allows smooth, low-friction linear motion. The rail's precision-ground profile ensures accurate guidance, while the bearing's recirculating elements distribute load evenly, enabling high load capacity and positioning accuracy. The system operates within specified load, speed, and temperature limits; exceeding these can cause premature wear or failure.

Common Materials

Hardened steel, Stainless steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Shaft Diameter	8–80 mm	Standard metric sizes; larger sizes on request.ISO 10285
Rail Length	100–4000 mm	Custom lengths available; longer rails may require splicing.
Dynamic Load Rating	0.5–120 kN	Based on 100 km travel life.ISO 14728-1
Static Load Rating	1–160 kN	Maximum load without permanent deformation.ISO 14728-1
Travel Accuracy Grade	C3–C5	C3 for high precision, C5 for general use.ISO 10285
Repeatability	±0.005–±0.02 mm	Depends on preload and mounting.
Maximum Travel Speed	2–5 m/s	Limited by lubrication and seal type.
Operating Temperature	-20–80 °C	Continuous operation; higher peaks possible with special seals.
Vibration Amplitude	≤0.05 mm	Measured at 1 m/s speed and 50% load.
Lubrication Type	Grease	Lithium soap grease; oil lubrication optional.
Seal Type	Contact	Contact seals for dust protection; non-contact for low friction.
Rail Material	GCr15	Bearing steel; stainless steel optional.GB/T 18254
Hardness	58–62 HRC	Indentation hardness of rail and shaft.ISO 683-17
Weight per Meter	0.5–15 kg/m	Depends on rail profile and 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

Rail Body Part
Main structural element providing the precision ground running surface

Material: Hardened steel
Running Surface Part
Precision-ground surface where bearings make contact

Material: Hardened steel with surface treatment

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Linear Bearing Rail.

Applied To / Applications

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

Leader Mast

View system integration details

Manufacturers of Linear Bearing Rail

Manufacturer profiles associated with Linear Bearing Rail.

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Frequently Asked Questions

What materials are available for the Linear Bearing Rail?

The rail is available in hardened steel or stainless steel. The standard rail material is bearing steel GCr15 per GB/T 18254, with hardness 58-62 HRC per ISO 683-17. Stainless steel is optional for corrosion resistance.

What are the standard sizes and load ratings?

Shaft diameters range from 8 to 80 mm, and rail lengths from 100 to 4000 mm. Dynamic load rating is 0.5-120 kN, static load rating 1-160 kN, based on ISO 14728-1. These are reference ranges; confirm for your specific model.

What accuracy grades are available?

Travel accuracy grades C3 (high precision) and C5 (general use) per ISO 10285. Repeatability is ±0.005 to ±0.02 mm. Verify the required grade for your application.

What are the operating limits?

Maximum travel speed is 2-5 m/s, operating temperature -20 to 80 °C, and vibration amplitude ≤0.05 mm at 1 m/s and 50% load. Lubrication is grease (lithium soap) with optional oil; contact seals for dust protection. Always check with the manufacturer for specific conditions.

Data Basis

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

Preliminary Technical Classification

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pressure:	Max 50 MPa static load capacity, dynamic loads typically 20-30% lower
other spec:	Max velocity: 5 m/s, acceleration: 50 m/s², contamination resistance: IP54 standard
temperature:	-20°C to +80°C (standard), up to +150°C with special seals/lubricants

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

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