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Linear Guides and Rail Systems
Linear guides and rail systems are machine elements that move heavy objects in a straight line with minimal friction or resistance. They typically have two main components: a stationary rail and a movable carriage, or slider, that supports the load and moves along the rail.
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Linear guides and rail systems generate lower friction than comparable plain sliding bearings. Because of this, less power is required to move a load, higher speeds can be achieved, and greater efficiency is reached. Linear bearings and rails offer recirculating ball bearings to handle extremely heavy loads. External carriages and guides handle heavy loads in dirty environments, with constant lubrication. Internal carriages and guides handle lighter loads and tolerate component misalignment with no lubrication required. Guide tracks with slides use a PTFE bonded coating on the slide to handle heavy loads, even in extreme temperatures, with no additional lubrication required.
LMN-Linear-Motion-Buying-Guide.pdfFor part listing and specifications, go to Shop Now
Linear Bearings & Rails
WON H, M, and MB series linear guides use recirculating ball-bearing blocks on hardened steel rails for low-friction guided motion with high load and moment capacity. H series provides a standard rail profile, M series reduces assembly height, and MB series uses a wider low-profile format when a broader bearing footprint is needed for machine layout or moment stability.
- H series load ratings extend to 74,600 N for machine axes requiring substantial guide capacity
- M and MB low-profile formats reduce guide height where vertical installation space is limited
- Rectangular and flanged bearing blocks provide different mounting arrangements for the moving machine member
Starting at
(M9-95L)
Internal Carriages & Guides
SureMotion LU series internal carriage guides place sealed wheel bearings inside an enclosed guide track for compact linear guidance without internal rail lubrication. Crown-wheel LUC carriages accommodate greater alignment variation, while double-V LUV carriages provide defined V-track engagement, allowing the wheel geometry to be matched to frame alignment and guidance requirements.
- Three-, four-, and five-wheel carriage formats provide different support arrangements as load and stability requirements increase
- Enclosed track construction shields the guide wheels from incidental contact and external debris
- Adjustable eccentric wheels allow carriage preload and running clearance to be set during installation
Starting at
(LUV-0-480)
External Carriages & Guides
SureMotion LV series external carriage guides run sealed V-wheels on an exposed V-shaped track so debris can move away from the running surfaces rather than collect inside the guide. This open, serviceable construction fits dusty or contaminated machinery where access for inspection and debris tolerance are important selection considerations.
- V-wheel geometry helps clear contaminants from the running surfaces during travel
- Rail sections can be joined end-to-end when the required travel exceeds a single guide length
- External wheel placement simplifies inspection, adjustment, and maintenance access
Starting at
(LVR-20-266)
Guide Tracks with Slides
PBC Mini-Rail and Uni-Guide series combine ceramic-coated aluminum tracks with self-lubricating FrelonGOLD plain-bearing carriages for quiet guided motion without routine bearing lubrication. Mini-Rail targets small-footprint assemblies, while Uni-Guide extends the bearing concept to higher loads and travel up to 2,000 mm with low- and tall-profile choices.
- Operating capability from -400°F to 400°F supports applications where temperature extremes rule out more conventional guide materials
- Uni-Guide low-profile and tall-profile tracks provide different mounting and clearance envelopes for machine integration
- Plain-bearing construction damps vibration and tolerates shock without recirculating rolling elements
Starting at
(MR07-0100-1)
Linear Guides & Rail System Accessories
Linear guide and rail accessories support installation, adjustment, and mounting of compatible carriage systems. LU and LV carriage tools provide the required adjustment interface for their wheel arrangements, while PBC guide-track clamps secure compatible tall-profile Uni-Guide tracks where the track design requires external mounting hardware.
- Select carriage adjustment tools by the corresponding LU or LV guide family
- Select guide-track clamps by the compatible PBC track profile and size
