Linear Bearings & Guideways

Linear bearings & guideways are primarily used in positioning table (positioning stage) applications.

The main function of a positioning table's linear or rotary bearing system is to carry the user mounted load while the table is in motion. The bearings are also a key element in determining the overall positioning table accuracy, repeatability, straightness and flatness.

Each bearing design provides advantages and disadvantages in load capacity, size, cost, stiffness, and friction. Selecting the right linear or rotary bearing system for a positioning table application is critical.

Linear bearings and guidewaysLinear bearings and guideways

The four primary linear motion bearings used in positioning table applications are:

Drawing of cross roller linear bearingDrawing of cross roller linear bearing

Cross Roller Linear Bearings feature cylindrical rollers with ground "V" ways. The larger surface contact between the rollers & "V" ways typically increases the table load capacity by up to 3 times more over a comparable ball & rod type system.

These table designs also produce better flatness and straightness specifications over traditional ball & rod type systems. Thus cross roller linear bearings are typically used in higher accuracy type of applications.

Drawing of round rail linear bearingDrawing of round rail linear bearing

Round Rail Linear Bearings use four bushings with recirculating ball bearings which are mounted within either two, or four pillow blocks (aluminum or steel housings). The contact point between the recirculating balls in the bushing and the round shaft produces a very low friction positioning table. The greater number of balls contacting the ground shaft provides for a larger load capacity system. This table design provides long travel lengths, good load capacities, large moment load capacities, and can accommodate protective cover plates & waycovers.


Drawing of square rail (linear guide) bearing systemDrawing of square rail (linear guide) bearing system

Square Rail (linear guide) Bearing Systems are very similar in operation to the round rail systems. The recirculating ball bearings in the bearing block contact more surface area on the curved ball race on the square rail which provides a table that has increased load capacity, increased moment load capacity, and higher system rigidity over the round rail positioning table.

These linear bearings will have better flatness & straightness specifications than a round rail system. This table design is also able to handle shock & vibration forces better than a round rail system and can accommodate protective cover plates & waycovers.

drawing of air bearing linear tabledrawing of air bearing linear table

Air Bearing Linear Tables create a small air cushion between the table carriage and the table base (guide rail). This provides a non-contact linear bearing system that is rigid, friction free, and cog-free. Using a very accurate guide rail (rectangular or square) can produce excellent flatness & straightness specifications. Typical drive mechanisms for these tables include high accuracy acme screws and linear motors. Incorporating a high accuracy non-contact linear motor drive system with a high accuracy non-contact linear encoder for position feedback creates a very accurate sub-micron or nano-precision positioning table, one that could virtually last forever.


Linear Bearings & Guideways We Provide:

Spine shaftsSpine shafts

Linear Guideways & Splines

Spine shafts are designed for light load applications where positional accuracy and low cost are desired, and anti-backlash assemblies are available. Linear guideways are compact, value-priced linear guide systems that feature a precision aluminum guide and passive carriage. The integral mounting base allows support over the entire length, if desired. Consider linear rail systems for light load applications requiring minimal frictional drag, low cost and long wear.


Threee linear rails and slidesThreee linear rails and slides

Linear Rails

Linear Rails are essential for precision motion control. They provide stable and accurate linear movement, vital in a wide range of industrial applications.


3 different size linear recirculating bearings3 different size linear recirculating bearings

Linear Recirculating Bearings

We carry both Lintech Profile Rail Linear Recirculating Bearings and SCHNEEBERGER Cross Roller Linear Bearings. Lintech’s family of Profile Rail Recirculating Linear Bearings are cost-effective and offer short-delivery turnaround times. SCHNEEBERGER Cross Roller Linear Bearings are renowned for high accuracy, frictionless motion, high rigidity and high reliability.


Threee linear rails and slidesThreee linear rails and slides

Linear Slides

Linear Slides are integral components in motion control, offering a complete system that combines a linear rail with a movable carriage. They provide smooth, controlled movement and are key in applications where precision and ease of integration are crucial.


Linear Tables & Stages

Provide manual positioning by a precision lead-screw with anti-backlash nut, and are available in strokes from 25mm to 150mm. Manual positioning is provided by a graduated drum that can be set to zero position. The reading accuracy is 0.01mm. Table parts are constructed with anodized aluminum, MINIRAIL linear guideways and lead screws in corrosion resistant steel.


Roller recirculating linear guidance systemsRoller recirculating linear guidance systems

Roller Recirculating Units

Linear Guidance Systems for Unlimited Stroke Lengths. According to the model and loading, balls or rollers are used which are returned internally, load-free, so that continuous motion is ensured.  These flat roller & ball recirculating units are characterized by low pulsation/low friction, high load carrying capacity/rigidity, and great precision.


Single and dual shaft assembliesSingle and dual shaft assemblies

Round Shafting & Bearings

Shaft assemblies are provided in single and dual rail versions, with diameters from 0.5 inch (12 mm) to 2.0 inch (50 mm) and lengths to 192 inches (4800 mm).   Open and closed linear bearings & pillow blocks are provided in both inch and metric sizes.   The single shaft assemblies (SA series), along with linear bearings (SLBO & DLBO), are typically used when the mechanical designers wish to spread apart the SA series and make their own custom carriage assembly.


Shaft supportsShaft supports

Shaft Supports

The single shaft assemblies (SA series), along with linear bearings (SLBO & DLBO), are typically used when the mechanical designers wish to spread apart the SA series and make their own custom carriage assembly. The dual shaft assemblies (TRSA series) and carriage assemblies (TRCA series) are utilized when ease of installation is of essence. The pre-aligned shafts on the TRSA series and the pre-aligned linear bearings on the TRCA series allow the user to quickly mount the components in their system.


Linear Bearing & Guideway Products:

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SLBO Single Bushing Open Pillow Block by Lintech

SLBO Single Bushing Open Pillow Block

Features an open LBO bushing in aluminum blocks with self-aligning capability and preload adjustment, ensuring smooth, precise operation in mechanical systems.

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DLBO Series Dual Bushing Open Pillow Block by Lintech

DLBO Series Dual Bushing Open Pillow Block

Combines two open LBO bushings in an aluminum block with a lubricating wick, designed for quick installation and reduced seal drag, ensuring precise mechanical alignment.

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DLBC Series Closed Dual Linear Bearing Pillow Block by Lintech

DLBC Series Closed Dual Linear Bearing Pillow Block

Features two closed linear bearings in an aluminum block with a lubricating wick, ensuring easy mounting and precise alignment in mechanical systems.

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ARC Series Profile Rail by Lintech

ARC Series Profile Rail

4-row alloy steel bearings, N/H/P grades, 15-55mm rails, multiple block sizes, high-speed & lube options, versatile load support.

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HRC Series Square Profile Rail  by Lintech

HRC Series Square Profile Rail

High-capacity 4-row square rail bearings, alloy steel, N/H/P grades, 15-55mm sizes, seals, speed & lube options, up to 112.8 kN load.

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MR Series Mini Profile Rail by Lintech

MR Series Mini Profile Rail

440 stainless steel, optional seals, self-lube, high-speed, N/H/P grades, adaptable sizes for varied loads.

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M/V Series Linear Bearing with Needle Cage by Schneeberger

M/V Series Linear Bearing with Needle Cage

Type M/V linear guideways with needle cages offer low resistance and high rigidity, ideal for heavy loads.

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N/O Series Linear Bearing with Needle Cage by Schneeberger

N/O Series Linear Bearing with Needle Cage

With needle bearings ensure supreme rigidity and low resistance, ideal for high-load tasks.

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R Series Cross Roller Guideway by Schneeberger

R Series Cross Roller Guideway

Offer cross-roller and ball options for versatile, high-precision applications.

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RD Series Linear Bearing with Recirculating Units by Schneeberger

RD Series Linear Bearing with Recirculating Units

Sizes 1-12, RD Series, 100-1500 mm Lengths, 1 m/s Max Speed

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RN Series Cross Roller Guideway  by Schneeberger

RN Series Cross Roller Guideway

Sizes 3-12, RN Series, 50-1500 mm Lengths, 1 m/s Max Speed

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RNG Series Cross Roller Guideway by Schneeberger

RNG Series Cross Roller Guideway

Sizes 4-12, RNG Series, 50-1500 mm Lengths, 1 m/s Max Speed

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SLBC-8 Series by Lintech

SLBC-8 Series

SLBC series pillow block with 1 closed self-aligning ball bushing, load capacity from 265 to 3000 lbs, diameters from 0.5 in to 2 in. Works with SL shafting.

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SLBC-10 Series by Lintech

SLBC-10 Series

SLBC series pillow block with 1 closed self-aligning ball bushing, load capacity from 265 to 3000 lbs, diameters from 0.5 in to 2 in. Works with SL shafting.

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SLBC-12 Series by Lintech

SLBC-12 Series

SLBC series pillow block with 1 closed self-aligning ball bushing, load capacity from 265 to 3000 lbs, diameters from 0.5 in to 2 in. Works with SL shafting.

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