Simplicity® Plain Linear Bearings, Sleeve Bushings, Pillow Blocks & Flange Mounts
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Plain linear bearing pillow block, open, with a 1" compensated ID for round shafts. This self-aligning, mountable, standard-sized pillow block features an inserted Simplicity® plain bearing within an aluminum alloy housing. The self-lubricating FrelonGOLD® bore liner provides oil-free, maintenance-free motion in harsh conditions such as extreme temperatures, dirt, contamination, vibration,..
$110.92
Square Linear Bearing with a 1" diameter, 2.25" length, featuring 2 adjustable Frelon®J self-lubricating plugs on each of two adjacent sides (at right angles to each other) and Frelon pads on the opposing sides for smooth, corrosion-resistant sliding on a stainless steel square shaft. Crafted from anodized aluminum, this low-maintenance..
$108.40
Plain linear bearing, closed, with a 12mm compensated ID that provides a 0.0015" running clearance per side on round shafts. Encased in a standard cylindrical anodized aluminum shell, this bearing features a bonded Simplicity® self-lubricating FrelonGOLD® bore liner for maintenance-free linear, rotating and oscillating motion in harsh environments such as..
$18.46
Plain linear bearing, closed, with a 5/8" precision ID (inner diameter) that provides a 0.0005" running clearance per side on matching round shafts. Encased in a standard cylindrical anodized aluminum shell, this bearing features a bonded Simplicity® self-lubricating FrelonGOLD® bore liner for maintenance-free linear, rotational, and oscillating motion in harsh..
$20.59
Square Linear Shaft of 1" diameter and a length of 12", made of 304 stainless steel, known for high corrosion resistance. Buffed and polished to provide an excellent running surface for self-lubricating Frelon®J lined square bearing plugs and pads. Part Number PST16-012-000 Bearing Type Stainless Steel Square Shafting Diameter 1"..
$34.25
Square Linear Bearing with a 1.5" diameter, 6" length, featuring 4 adjustable Frelon®J self-lubricating plugs on each of two adjacent sides (at right angles to each other) and Frelon pads on the opposing sides for smooth, corrosion-resistant sliding on a stainless steel square shaft. Crafted from anodized aluminum, this low-maintenance..
$228.40
Square Linear Bearing with a 1" diameter, 2.25" length, featuring 2 adjustable Frelon®J self-lubricating plugs on each of the 4 sides of the bearing for smooth, corrosion-resistant sliding on a stainless steel square shaft. Crafted from anodized aluminum, this low-maintenance bearing excels in harsh environments and is often used as..
$109.99
Plain Linear Bearing with a Square Flange and a 3/4" precision ID, designed to slide smoothly on both steel and ceramic-coated aluminum shafts. It features a self-lubricating FrelonGOLD® bearing liner that performs reliably with vibration damping in harsh conditions, enabling long-term, maintenance-free operation. Precision running clearance on the inner diameter..
$81.15
Twin plain linear bearing pillow block, closed, with a 1" compensated ID. This self-aligning mountable aluminum alloy pillow block bearing features an inserted Simplicity® plain bearing with a bonded, self-lubricating FrelonGOLD® liner for oil-free, maintenance-free motion through high temperatures, dirt, contamination, vibration, and shock loads. The twin body adds bearing..
$183.36
Plain linear bearing pillow block, closed, with a 3/4" precision ID. This self-aligning, mountable, standard-sized pillow block features an inserted closed-shelled Simplicity® plain bearing within an aluminum alloy housing. The self-lubricating FrelonGOLD® liner provides oil-free, maintenance-free motion in harsh conditions such as extreme temperatures, dirt, contamination, vibration, and shock loads...
$63.71
Plain linear bearing, closed, with a 3/4" compensated ID (inner diameter) that provides a 0.0015" running clearance per side on matching round shafts. Encased in a standard cylindrical anodized aluminum shell, this bearing features a bonded Simplicity® self-lubricating FrelonGOLD® bore liner for maintenance-free linear, rotational, and oscillating motion in harsh..
$21.00
Plain linear bearing, closed, with a 2" precision ID (inner diameter) that provides a 0.0005" running clearance per side on matching round shafts. Encased in a standard cylindrical anodized aluminum shell, this bearing features a bonded Simplicity® self-lubricating FrelonGOLD® bore liner for maintenance-free linear, rotational, and oscillating motion in harsh..
$130.84
Round flanged sleeve bearing, 1.5" ID, 1.75" OD and 2" length with a closed lightweight aluminum alloy shell. This Simplicity® plain bushing supports linear, rotational, and oscillating motion with a bonded, self-lubricating FrelonGOLD® liner that eliminates grease and reduces maintenance in harsh operating conditions. Built for environments where heat, dirt,..
$73.30
Sleeve bearing of 1" ID, 1.25" OD and 1.5" length, unflanged with a closed, lightweight aluminum alloy shell. This maintenance-free Simplicity® plain bushing supports linear, rotational, and oscillating motion with a bonded, self-lubricating FrelonGOLD® liner that eliminates grease in harsh operating conditions. Built for environments where heat, dirt, welding splatter,..
$29.04
Sleeve bearing of 3/8" ID, 5/8" OD and 3/4" length, unflanged with a closed, lightweight aluminum alloy shell. This maintenance-free Simplicity® plain bushing supports linear, rotational, and oscillating motion with a bonded, self-lubricating FrelonGOLD® liner that eliminates grease in harsh operating conditions. Built for environments where heat, dirt, welding splatter,..
$14.53
Extended Plain Linear Bearing with a 1" ID in a square flanged aluminum housing (end mount). The ID has a precision running clearance and features a unique self-lubricating FrelonGold® lining for maintenance-free linear, rotational or oscillating motion in harsh conditions like extreme heat, dirt, and vibration. Extended Size Housing With..
$241.36
Twin plain linear bearing pillow block, closed, with a 1" precision ID. This self-aligning mountable aluminum alloy pillow block bearing features an inserted Simplicity® plain bearing with a bonded, self-lubricating FrelonGOLD® liner for oil-free, maintenance-free motion through high temperatures, dirt, contamination, vibration, and shock loads. The twin body adds bearing..
$183.36
Plain linear bearing pillow block, open, with a 3/4" precision ID for round shafts. This self-aligning, mountable, standard-sized pillow block features an inserted Simplicity® plain bearing within an aluminum alloy housing. The self-lubricating FrelonGOLD® bore liner provides oil-free, maintenance-free motion in harsh conditions such as extreme temperatures, dirt, contamination, vibration,..
$78.52
Open plain linear bearing with a 1" precision ID for round shafts, which provides a 0.0005" running clearance per side. The open anodized aluminum shell provides clearance for rail-supported shafting or profiled rails, while the bonded, self-lubricating FrelonGOLD® liner supports maintenance-free linear, rotational, and oscillating motion without grease. Built for..
$49.07
Plain linear bearing, closed, with a 5/8" compensated ID (inner diameter) that provides a 0.0015" running clearance per side on matching round shafts. Encased in a standard cylindrical anodized aluminum shell, this bearing features a bonded Simplicity® self-lubricating FrelonGOLD® bore liner for maintenance-free linear, rotational, and oscillating motion in harsh..
$20.59
Plain linear bearings are precision-bored linear motion components that use sliding elements along the bore’s inner diameter, such as a bonded self-lubricating liner or low-cost injection-molded polymer liner, to produce low-friction straight-line motion along a round or square shaft. Open-shelled versions provide a cutout to clear the way for rail supported shafts or profiled rails. Unlike rolling element ball bearings, plain linear bearings eliminate balls that can jam, seize, contaminate, brinell (dent), or fail in harsh environments. Simplicity® plain linear bearings feature a premium bonded, self-lubricating FrelonGOLD® PTFE-based liner that minimizes friction and wear, eliminates the need for external lubrication, and delivers long-lasting maintenance-free performance in conditions involving extreme heat, dirt, welding splatter, particulates, debris, vibration, shock, washdown, and caustic exposure. Configurations include standard, twin-size, self-aligning, die set, flanged, pillow block bearings and sleeve bearings (bushings). Off-the-shelf style choices include round or square shaft bearings, straight or crowned anodized aluminum shells, open or closed shell designs, standard or double-size housings, and straight or flanged sleeve options. Optional Frelon®J liners provide resistance to corrosive chemicals, and Frelon®W liners support FDA-compliant applications. All variants are available with precision or compensated running clearances and can support linear, rotary, or oscillating motion. ID sizes are offered in Inch, ISO Metric, and JIS Metric standards. The 2:1 binding rule applies to plain bearing systems as the farther a load sticks out from the shaft or rail, the farther apart the bearings or carriages need to be to prevent binding.
- Sizing Options: Inch, metric, and JIS sizes available
- Available in open, closed and thin-wall styles
- ID Sizes: Available from 3/16” to 4” Inch Series, 5mm to 80mm Metric Series
- Shaft Lengths: Up to 12 feet
- Shell Material: Standard is aluminum; stainless steel shells are available
- Maximum Speed: Up to 8 m/s (315 in/s)
- Temperature Rating: -400°F to +400°F or -240°C to 204°C
- Maximum Horizontal Static Load: 2,165 to 100,500 lb (982 to 45,586 kg)
- Seal Options: Nitrile rubber, urethane, and viton seals available from ½” ID and up or 20mm and up
- Mounting Options: O-ring and retaining ring grooves for multiple mounting options
- External Lubrication: Optional feature for added lubrication
- Vibration Damping: Ensures smooth and quiet operation
View the Plain Linear Bearing Product Features page
Frequently Asked Questions
What are flanged plain bearings used for?
Flanged plain bearings are used to simplify mounting and axial positioning in linear motion systems, providing a built-in flange that helps secure the bearing within a housing or plate.
What is a pillow block plain bearing?
A pillow block plain bearing is a mounted assembly that houses a plain bearing in a rigid block, making installation easier while providing alignment support and load distribution.
What are twin or double-size plain bearings?
Twin or double-size plain bearings feature extended length or dual-bearing surfaces to increase load capacity, improve stability, and reduce deflection in demanding applications.
What are die set plain bearings used for?
Die set plain bearings are designed for use in stamping and tooling applications, providing precise linear guidance and durability under high loads and repetitive motion.
What are thin-wall plain bearings?
Thin-wall plain bearings are designed for space-constrained applications, offering a reduced outer diameter while maintaining low friction and reliable linear motion performance.
What is a sleeve bushing in linear motion applications?
A sleeve bushing is a cylindrical plain bearing that provides smooth, low-friction motion along a shaft, commonly used where compact size and simple installation are required.
What are the benefits of self-lubricating liners in plain bearings?
Self-lubricating liners eliminate the need for external lubrication, reduce maintenance, minimize friction and wear, and perform reliably in dirty, dry, or high-temperature environments.
When should mounted plain bearings be used instead of standalone bearings?
Mounted plain bearings, such as pillow blocks or flanged units, should be used when easier installation, improved alignment, and additional structural support are required.
What materials are used in plain bearing liners?
Plain bearing liners are typically made from PTFE-based materials that provide low friction, wear resistance, and consistent performance across a wide range of temperatures and conditions.
Can plain bearings operate without lubrication?
Yes, plain bearings with self-lubricating liners are designed to operate without external lubrication, making them ideal for applications where maintenance access is limited or contamination is a concern.
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