Linear Guide Carriage

Name: Linear Guide Carriage | Linear actuator guide components - Frigate
Price: 249.00 USD
Availability: InStock

Linear Guide Carriage systems are expected to support multi-directional forces without inducing elastic deformation that compromises alignment. This is achieved through four-point angular contact geometry and extended bearing raceways, enabling even load distribution under combined axial, radial, and moment forces. The structural interface of the Linear Guide Carriage is designed to maintain stability under high dynamic loads, preventing localized stress concentration that often leads to fatigue failure in high-cycle operations.

Material

Carbon Steel (SUJ2, hardened), Stainless Steel (SUS440C) or Aluminum Alloy

Dimensional Tolerances

Width/Height – ±0.005 mm; Mounting Hole Position – ±0.01 mm; Rail Fit Clearance – ≤0.003 mm

Mounting Hole Specifications

Thread Size – M4–M12; Hole Pattern – DIN/ISO standard or custom; Countersink – 90° (per customer spec)

Flatness/Parallelism

Mounting Surface Flatness – ≤0.005 mm/100 mm; Parallelism to Rail Seat – ≤0.01 mm

Raceway Profile & Hardness

Profile – Precision-ground Gothic Arch or Circular; Hardness – 58–62 HRC (hardened & tempered)

Product Description

Linear Guide Carriage assemblies deployed in metrology systems, semiconductor processing, or high-speed CNC equipment must retain motion fidelity over prolonged usage. Sub-micron repeatability is maintained through matched ball-grade tolerances and ground raceway profiles that eliminate cumulative positioning error. The preload configuration of the Linear Guide Carriage ensures rigidity in the axial direction, reducing micro-shift during acceleration and deceleration phases, even when mounted in cantilevered axes.

Running Accuracy

Straightness – ≤0.003 mm/100 mm; Parallelism to Rail – ≤0.005 mm

Surface Finish

Raceway – Ra ≤0.1 µm (superfinish); Exterior – Ra ≤0.4 µm (anodized or coated)

Burr-Free Requirement

Laser-deburred edges, ISO 13715 compliant (no sharp edges)

Protective Coating

Black Oxide, Hard Chrome Plating (5–10 µm, for corrosion resistance), Nickel-Teflon Coating (low friction)

Certification Standards

ISO 14728 (Linear Motion Bearings), JIS B 1514, RoHS/REACH compliant

Technical Advantages

Friction-induced hysteresis and non-linearity in motion profiles can degrade performance in servo-driven stages. Linear Guide Carriage units mitigate these effects using engineered recirculating elements and deep-channel raceways to maintain a uniform rolling interface. The internal architecture ensures low and stable dynamic friction, with coefficients averaging below 0.003 under lubricated conditions, supporting smoother velocity transitions and finer force control in precision actuation systems.

Industrial applications frequently expose Linear Guide Carriage assemblies to airborne particulates, metal chips, coolants, and corrosive atmospheres. To maintain uninterrupted operation, the carriage housing integrates multi-layer end seals, directional deflectors, and dual-lip contact scrapers made of chemically resistant elastomers. This containment design minimizes ingress of contaminants into the ball circuit while maintaining internal pressure equalization, preventing premature pitting or corrosion of the bearing surfaces.

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Industry Applications

Semiconductor Wafer Handling Systems

Provides sub-micron linear motion control in vacuum or cleanroom conditions, ensuring positional stability during die placement and inspection.

Coordinate Measuring Machines (CMMs)

Ensures rigid and backlash-free travel of probing arms, critical for dimensional accuracy in 3D metrology and reverse engineering.

Medical Imaging Equipment

Facilitates smooth and vibration-free linear displacement of imaging modules, maintaining alignment in high-resolution MRI and CT systems.

Automated Optical Inspection (AOI) Systems

Delivers low-friction, high-precision scanning of sensor arrays for defect detection in PCB and microelectronic assembly lines.

Robotic Arm Base Rails

Handles combined axial and moment loads for robotic end-effector transport with minimal deflection during high-speed operation.

Pick-and-Place Automation

Enables repetitive, high-cycle linear movements with stable kinematic response for precise object positioning in packaging and assembly lines.

Structural Rigidity for High Moment Load Stability

Linear Guide Carriage assemblies must withstand torsional loads and base distortion under eccentric forces. High moment resistance is achieved through optimized contact angles, extended bearing spans, and a monoblock design. Finite element-tuned geometry ensures resistance to twist around all axes, supporting cantilevered setups with minimal deflection.

Linear Guide Carriage units are dimensionally aligned with global rail standards such as ISO 12090, DIN 645, and JIS B 1181. Tolerance-matched interfaces enable direct replacement or integration without rail modification, simplifying retrofits and minimizing system downtime.

Having Doubts? Our FAQ

Check all our Frequently Asked Question

How does Frigate ensure Linear Guide Carriage flatness during high-precision machining?

Frigate machines the carriage base on CNC surface grinders using air-gauged reference plates. Flatness is measured within ±3 microns across the entire mounting surface. This guarantees uniform rail contact and eliminates stress-induced warping during bolt tightening. Precision flatness is essential for maintaining parallelism in multi-axis motion systems.

What quality control methods does Frigate apply to verify bearing raceway accuracy?

Frigate uses coordinate measuring machines (CMMs) and optical profilometers to validate raceway curvature and contact geometry. Ball-track tolerances are maintained within ±1 micron to avoid uneven load distribution. Consistent raceway geometry ensures predictable frictional behavior and load sharing. Each Linear Guide Carriage is traceable to inspection logs via part serialization.

Can Frigate customize Linear Guide Carriage preloading based on user-specific dynamic profiles?

Yes, Frigate offers preload tuning by selecting ball diameter deviations and raceway offset adjustments during assembly. Preload levels are optimized based on application stiffness, expected thermal expansion, and motion frequency. This allows buyers to fine-tune damping behavior in servo-driven systems. Frigate also provides preload simulation data on request.

How does Frigate validate moment load performance of its Linear Guide Carriage in real use cases?

Finite Element Analysis (FEA) is applied on the carriage structure under user-defined moment conditions. Load simulations replicate pitch, roll, and yaw forces based on actual mounting orientation. Physical tests confirm torsional rigidity using strain gauge measurements at critical nodes. The results are correlated with ISO standard moment ratings.

How does Frigate handle corrosion resistance for Linear Guide Carriage in chemical processing environments?

Frigate offers carriages in stainless steel or with nickel-Teflon composite coatings. These materials withstand exposure to acids, coolants, and vapors without degrading mechanical tolerances. Seals are also made from chemically resistant elastomers tested for long-term material compatibility. This ensures long service life even under continuous wet-process operation.

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