Carriage/Slide Block for Linear Rails

Product Specifications

Technical details and manufacturing context for Carriage/slide block

Definition

The carriage or slide block is a critical component within X-Axis Rails & Drive systems that mounts onto linear rails and moves along them with minimal friction. It serves as the interface between stationary rails and moving equipment, providing stable support, precise positioning, and smooth linear motion for tools, sensors, or workpieces in automated machinery and industrial equipment. This component is typically made from carbon steel, stainless steel, or aluminum alloy, and is available in a range of sizes to suit different rail widths and load requirements. Key parameters include rated load capacity (500–5000 N), travel speed (0.5–5 m/s), positioning accuracy (±0.01–±0.05 mm per ISO 10791-2), repeatability (±0.003–±0.01 mm per ISO 230-2), operating temperature (-20 to 80 °C), maximum acceleration (10–50 m/s²), and rail width (15–65 mm per ISO 12090-1). Other dimensions such as block height, length, width, mounting hole spacing, and weight vary with size and material. Material grades may include GCr15 or 42CrMo4, and the IP rating ranges from IP54 to IP65. The carriage/slide block operates on the principle of linear motion using rolling elements (balls or rollers) or sliding surfaces. It contains recirculating ball bearings or roller elements that travel along precision-ground raceways within the block, reducing friction and enabling smooth, accurate movement along the rail. Preload adjustment mechanisms ensure proper contact and eliminate play for high precision applications. When selecting a carriage/slide block, verify model-specific values for load, speed, accuracy, and environmental resistance with the legal manufacturer or supplier, as the listed ranges are for reference only. Proper installation, lubrication, and maintenance are essential to achieve the specified performance and service life.

Working Principle

The carriage/slide block operates on the principle of linear motion using rolling elements (balls or rollers) or sliding surfaces. It contains recirculating ball bearings or roller elements that travel along precision-ground raceways within the block, reducing friction and enabling smooth, accurate movement along the rail. Preload adjustment mechanisms ensure proper contact and eliminate play for high precision applications.

Common Materials

Carbon steel, Stainless steel, Aluminum alloy

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Load Capacity	500–5000 N	Static load capacity; dynamic load is lower.
Travel Speed	0.5–5 m/s	Maximum speed depends on lubrication and load.
Positioning Accuracy	±0.01–±0.05 mm	Higher accuracy requires preloaded rails.ISO 10791-2
Repeatability	±0.003–±0.01 mm	Depends on ball screw and guide preload.ISO 230-2
Operating Temperature	-20–80 °C	Seals and grease limit the range.
Maximum Acceleration	10–50 m/s²	Higher acceleration reduces service life.
Rail Width	15–65 mm	Common sizes: 15, 20, 25, 30, 35, 45, 55, 65.ISO 12090-1
Block Height	24–90 mm	Height from rail top to block top.
Block Length	60–200 mm	Length along the rail direction.
Block Width	34–100 mm	Width across the rail.
Mounting Hole Spacing	20–80 mm	Distance between mounting holes on the block.
Weight	0.5–10 kg	Per block, varies with size and material.
Material Grade	GCr15, 42CrMo4	Bearing steel or alloy steel for rails and blocks.GB/T 18254, EN 10083-3

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

Bearing retainer Part
Holds and guides recirculating ball bearings

Material: Carbon steel
End seals Part
Protect internal components from contaminants

Material: Synthetic rubber
Mounting plate Part
Provides attachment points for equipment

Material: Carbon steel
Preload adjustment mechanism
Adjusts bearing contact for optimal performance

Material: Stainless steel
Recirculating Ball Bearings
The rolling elements that travel along the internal raceways.

Applied To / Applications

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

X-Axis Rails & Drive

View system integration details

Manufacturers of Carriage/slide block

Manufacturer profiles associated with Carriage/slide block.

Sourcing Carriage/slide block 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.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 6 September 2026

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 typical load capacity of a carriage/slide block?

The rated load capacity typically ranges from 500 to 5000 N, but the dynamic load is lower. Always verify the exact capacity for your specific model and application with the manufacturer.

What materials are commonly used for carriage/slide blocks?

Common materials include carbon steel, stainless steel, and aluminum alloy. Material grades may include GCr15 or 42CrMo4, but confirm the exact grade with the supplier.

How does preload affect the performance of a carriage/slide block?

Preload adjustment ensures proper contact between rolling elements and raceways, eliminating play and improving rigidity and accuracy. Higher preload can increase stiffness but may reduce service life.

What environmental conditions can a carriage/slide block withstand?

The operating temperature range is typically -20 to 80 °C, and the IP rating ranges from IP54 to IP65. For dusty or wet environments, a higher IP rating is recommended. Always check the manufacturer's specifications.

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/slide block

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 capacity, dynamic loads typically 30-40% lower
other spec:	Max velocity: 5 m/s, Acceleration: 50 m/s², IP rating: IP54-IP67 depending on seals
temperature:	-20°C to +80°C (standard), -40°C to +120°C (special seals/lubricants)

Carriage/slide block

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards