Carriage Housing for Precision Linear Guides

Product Specifications

Technical details and manufacturing context for Carriage Housing

Definition

The carriage housing is the main structural component of a precision linear guide's bearing block. It serves as the mounting interface for the linear guide system, providing a rigid platform to attach the moving load while containing and protecting the internal rolling elements (balls or rollers) and recirculation system. It ensures precise alignment with the guide rail and maintains the preload for smooth, accurate linear motion. The housing is typically made from carbon steel or stainless steel, offering strength and corrosion resistance depending on the material selected. Key dimensions include width (34–150 mm), length (50–250 mm), and height (24–70 mm), which affect load capacity, rigidity, and mounting compatibility. Mounting hole spacing ranges from 26 to 100 mm and must match the mating component's hole pattern. Dynamic load ratings (5–120 kN) and static load ratings (10–200 kN) are specified per ISO 14728-1, indicating the housing's capacity under cyclic and maximum loads without permanent deformation. Preload classes (Z0–Z3) and accuracy grades (C0–C5) are also defined by ISO 14728-1, with higher preload increasing rigidity but reducing service life, and C0 offering the highest precision. Operating temperature ranges from -20°C to 80°C, limited by seals and lubrication. Maximum speed is 60–300 m/min, constrained by ball recirculation and lubrication. Lubrication can be grease or oil, with grease for general use and oil for high-speed applications. Sealing options (IP54–IP65) protect against dust and moisture, with higher IP ratings for harsher environments. The material for rails and balls is typically bearing steel (GCr15/SUJ2) per GB/T 18254 and JIS G4805, while the housing itself is steel. Weight ranges from 0.5 to 10 kg, affecting inertia and handling. Always verify model-specific values and standards with the legal manufacturer or supplier before procurement.

Working Principle

The carriage housing is rigidly mounted to the moving machine element. It contains internal raceways that align with the raceways on the stationary guide rail. Rolling elements circulate within the housing, transferring the load from the housing to the rail with minimal friction, enabling precise linear motion. The housing's geometry and mounting holes facilitate secure attachment and alignment. Preload is maintained by the housing's design, ensuring consistent contact between rolling elements and raceways, which is essential for accuracy and rigidity.

Common Materials

Carbon Steel, Stainless Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Width	34–150 mm	Matches rail width; affects load capacity and rigidity.
Length	50–250 mm	Determines mounting hole spacing and load distribution.
Height	24–70 mm	Affects center of gravity and moment load capacity.
Mounting Hole Spacing	26–100 mm	Must match mating component hole pattern.
Dynamic Load Rating	5–120 kN	Determines service life under cyclic loading.ISO 14728-1
Static Load Rating	10–200 kN	Maximum load without permanent deformation.ISO 14728-1
Preload Class	Z0–Z3	Higher preload increases rigidity but reduces life.ISO 14728-1
Accuracy Grade	C0–C5	C0 highest precision, C5 standard.ISO 14728-1
Operating Temperature	-20–80 °C	Seals and lubrication limit range.
Maximum Speed	60–300 m/min	Limited by ball recirculation and lubrication.
Lubrication Type	Grease/Oil	Grease for general use, oil for high speed.
Sealing	IP54–IP65	Higher IP for dusty or wet environments.IEC 60529
Material	GCr15/SUJ2	Bearing steel for rails and balls; housing is steel.GB/T 18254, JIS G4805
Weight	0.5–10 kg	Affects inertia and handling.

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
The housing itself: encloses and locates the internal parts and provides the mounting interface.
End Seal / Wiper Part
Prevents contamination (dust, chips) from entering and retains lubrication within the housing.

Material: Rubber or Polyurethane
Lubrication Fitting / Port Part
Allows for the introduction of grease or oil to lubricate the internal rolling elements and raceways.

Material: Steel

Applied To / Applications

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

Precision Linear Guide / Bearing Block

View system integration details

Manufacturers of Carriage Housing

Manufacturer profiles associated with Carriage Housing.

Sourcing Carriage 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 materials are available for carriage housings?

Carriage housings are typically made from carbon steel or stainless steel. Carbon steel offers high strength, while stainless steel provides corrosion resistance. The choice depends on the application environment and load requirements.

How do I select the correct carriage housing size?

Selection involves matching the housing width to the rail width, considering length and height for load capacity and rigidity, and ensuring mounting hole spacing aligns with your machine's hole pattern. Dynamic and static load ratings must meet your application's loads, and accuracy grade and preload class should be chosen based on required precision and rigidity.

What is the significance of preload class and accuracy grade?

Preload class (Z0–Z3) indicates the internal clearance or preload applied to the rolling elements. Higher preload increases rigidity but reduces service life. Accuracy grade (C0–C5) defines the precision of the guide system, with C0 being the highest precision and C5 standard. These are specified per ISO 14728-1.

What maintenance is required for carriage housings?

Regular lubrication is essential, using grease for general applications or oil for high-speed operations. Check seals for damage to maintain IP rating. Monitor for unusual noise or vibration, which may indicate wear or loss of preload. Always follow the manufacturer's maintenance guidelines.

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 Carriage 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 50 MPa static load
other spec:	Max linear speed: 5 m/s, Vibration tolerance: 15 g
temperature:	-20°C to +120°C

Carriage Housing

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards