Linear Guide / Bearing Housing for Vertical Positioning Actuators

Product Specifications

Technical details and manufacturing context for Linear Guide / Bearing Housing

Definition

In a Vertical Positioning Actuator, the Linear Guide / Bearing Housing is a critical mechanical part that encloses and secures the linear bearing assembly or guide rail system. It ensures the actuator's moving platform or carriage moves along a strictly vertical axis with minimal friction, high rigidity, and precise alignment, directly contributing to the system's positioning accuracy and load-bearing capacity. The housing provides a rigid, precisely machined mounting surface and internal raceways for linear bearings (such as ball bushings) or a secure base for mounting guide rails. It transfers loads from the moving carriage to the actuator's main structure while maintaining the alignment of the rolling elements (balls or rollers) to facilitate smooth, low-friction linear motion along the guideway. This component is typically manufactured from cast iron, aluminum alloy, or carbon steel, with material selection based on required strength, weight, and cost. Key parameters include rail width (15–65 mm), housing bore diameter (12–100 mm), dynamic load rating (5–120 kN), static load rating (10–250 kN), accuracy grade (C1–C5), running parallelism (±0.005–±0.02 mm), operating temperature (-20–80 °C), maximum speed (60–300 m/min), housing material (GC15–GC45), surface treatment (black oxide to phosphating), and weight (0.5–15 kg). These values are reference ranges and must be verified for the specific model and application. Standards such as ISO 12090-1 and ISO 14728-1 are referenced for dimensional and load ratings, but compliance must be confirmed with the manufacturer. The housing's design directly influences the actuator's precision, rigidity, and service life. Proper selection requires consideration of load, speed, accuracy, and environmental conditions. Maintenance signals include increased friction, noise, or play, which may indicate wear or misalignment. Failure boundaries include exceeding load ratings, which can cause permanent deformation, or operating outside temperature limits, which may affect lubrication and materials. Always consult the legal manufacturer for model-specific values and standards.

Working Principle

The housing provides a rigid, precisely machined mounting surface and internal raceways for linear bearings (such as ball bushings) or a secure base for mounting guide rails. It transfers loads from the moving carriage to the actuator's main structure while maintaining the alignment of the rolling elements (balls or rollers) to facilitate smooth, low-friction linear motion along the guideway.

Common Materials

Cast Iron, Aluminum Alloy, Carbon Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rail Width	15–65 mm	Determines load capacity and stiffness.ISO 12090-1
Housing Bore Diameter	12–100 mm	Must match bearing outer diameter.
Dynamic Load Rating	5–120 kN	Higher values allow longer service life.ISO 14728-1
Static Load Rating	10–250 kN	Exceeding may cause permanent deformation.ISO 14728-1
Accuracy Grade	C1–C5	C1 is highest precision, C5 is standard.ISO 12090-1
Running Parallelism	±0.005–±0.02 mm	Tighter tolerance for high-precision applications.ISO 12090-1
Operating Temperature	-20–80 °C	Outside range may affect lubrication and materials.
Maximum Speed	60–300 m/min	Limited by lubrication and seal design.
Housing Material	GC15–GC45	Cast iron grades; steel for higher strength.GB/T 9439
Surface Treatment	Black oxide–Phosphating	Improves corrosion resistance and appearance.
Weight	0.5–15 kg	Affects handling and dynamic behavior.

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

Housing Body Part
Main structural frame that provides rigidity and mounting points.

Material: Cast Iron or Aluminum Alloy
Bore / Raceway Part
Precision-machined internal surface that guides the linear bearing or contacts the guide rail.

Material: Hardened Steel or bearing-grade material
Mounting Holes / Tapped Threads Part
Allow secure attachment of the housing to the actuator structure and the bearing/rail to the housing.

Material: Same as housing body
Seals / Wipers (if present) Optional Part
Protect the internal bearing or guideway from dust, chips, and contaminants.

Material: Rubber or Polyurethane

Applied To / Applications

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

Vertical Positioning Actuator

View system integration details

Manufacturers of Linear Guide / Bearing Housing

Manufacturer profiles associated with Linear Guide / Bearing Housing.

Sourcing Linear Guide / Bearing Housing from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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.

Frequently Asked Questions

What is the primary function of a Linear Guide / Bearing Housing?

It houses and supports linear bearings or guide rails, ensuring precise, low-friction linear motion along a defined axis. It transfers loads from the moving carriage to the actuator structure while maintaining alignment.

What materials are commonly used for this housing?

Typical materials include cast iron, aluminum alloy, and carbon steel. The choice depends on required strength, weight, and cost. Specific grades like GC15–GC45 are listed as reference ranges.

How do I select the correct housing size?

Selection is based on rail width, housing bore diameter, load ratings, accuracy grade, and operating conditions. Always verify these parameters with the manufacturer for your specific application.

What maintenance signals indicate a problem?

Increased friction, unusual noise, or visible play in the carriage may indicate wear, misalignment, or contamination. Regular inspection and lubrication are recommended.

Data Basis

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

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.

Buyer enquiry

Request manufacturing insight for Linear Guide / Bearing Housing

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes: Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here: We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman: CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What we don't claim: A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

pressure:	Max 10 MPa (100 bar) static load capacity, dependent on housing material and mounting
other spec:	Max linear speed: 2 m/s (continuous), 5 m/s (peak); Vibration tolerance: Up to 15 g; IP rating: IP54 standard, IP67 optional
temperature:	-20°C to +80°C (standard), up to +120°C with special seals/lubrication

Linear Guide / Bearing Housing

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards