Thin Wall Plain Linear Bearing. Compensated 6mm ID (inner diameter). The compensated running clearance provides more clearance between the inner diameter and shaft allowing the bearing to perform like a linear ball bearing. ISO Metric Closed Compensated running clearance, 0.0015" per side FAG Interchange Self Lubricating Simplicity Frelon Gold® liner material with anodized..
$14.38
Thin Wall Plain Linear Bearing with a 50mm ID (inner diameter) ISO Metric Closed Precision running clearance, 0.0005" per side FAG Interchange Self Lubricating Simplicity Frelon Gold® liner material with anodized aluminum outer shell Designed for use with end-supported shafting Interchangeable with compact linear ball bearings and some bronze bushings Product Variant..
$117.77
Thin Wall Plain Linear Bearing with a 30mm ID (inner diameter) ISO Metric Closed Precision running clearance, 0.0005" per side FAG Interchange Self Lubricating Simplicity Frelon Gold® liner material with anodized aluminum outer shell Designed for use with end-supported shafting Interchangeable with compact linear ball bearings and some bronze bushings Product Variant..
$58.72
Thin Wall Plain Linear Bearing with a 20mm ID (inner diameter) ISO Metric Closed Precision running clearance, 0.0005" per side FAG Interchange Self Lubricating Simplicity Frelon Gold® liner material with anodized aluminum outer shell Designed for use with end-supported shafting Interchangeable with compact linear ball bearings and some bronze bushings Product Variant..
$18.91
Thin Wall Plain Linear Bearing. Compensated 10mm ID (inner diameter). The compensated running clearance provides more clearance between the inner diameter and shaft allowing the bearing to perform like a linear ball bearing. ISO Metric Closed Compensated running clearance, 0.0015" per side FAG Interchange Self Lubricating Simplicity Frelon Gold® liner material with anodized..
$15.95
Thin Wall Plain Linear Bearing with a 40mm ID (inner diameter) ISO Metric Closed Precision running clearance, 0.0005" per side FAG Interchange Self Lubricating Simplicity Frelon Gold® liner material with anodized aluminum outer shell Designed for use with end-supported shafting Interchangeable with compact linear ball bearings and some bronze bushings Product Variant..
$67.37
Thin Wall Plain Linear Bearing with a 15mm ID (inner diameter) ISO Metric Closed Precision running clearance, 0.0005" per side FAG Interchange Self Lubricating Simplicity Frelon Gold® liner material with an anodized aluminum outer shell Designed for use with end-supported shafting Interchangeable with compact linear ball bearings and some bronze bushings Product..
$18.55
Thin Wall Plain Linear Bearing. Compensated 20mm ID (inner diameter). The compensated running clearance provides more clearance between the inner diameter and shaft allowing the bearing to perform like a linear ball bearing. ISO Metric Closed Compensated running clearance, 0.0015" per side FAG Interchange Self Lubricating Simplicity Frelon Gold® liner material with anodized..
$18.91
Thin Wall Plain Linear Bearing. Compensated 8mm ID (inner diameter). The compensated running clearance provides more clearance between the inner diameter and shaft allowing the bearing to perform like a linear ball bearing. ISO Metric Closed Compensated running clearance, 0.0015" per side FAG Interchange Self Lubricating Simplicity Frelon Gold® liner material with anodized..
$14.38
Thin Wall Plain Linear Bearing with a 35mm ID (inner diameter) ISO Metric Closed Precision running clearance, 0.0005" per side FAG Interchange Self Lubricating Simplicity Frelon Gold® liner material with an anodized aluminum outer shell Designed for use with end-supported shafting Interchangeable with compact linear ball bearings and some bronze bushings Product..
$67.37
Thin Wall Plain Linear Bearing with a 16mm ID (inner diameter) ISO Metric Closed Precision running clearance, 0.0005" per side FAG Interchange Self Lubricating Simplicity Frelon Gold® liner material with an anodized aluminum outer shell Designed for use with end-supported shafting Interchangeable with compact linear ball bearings and some bronze bushings Product..
$18.55
Closed Pillow Block with a Linear Ball Bearing of 40mm ID (inner diameter) inside a housing made of aluminum alloy. Durable Heat Treated Alloy Steel Shell for durability, low coefficient of friction for speed and resin retainer for low noise operation. Temperature Range: -4/+176°F (-20/+80°C) Variant ID Sizes: Available from..
$185.30
Closed Pillow Block Bearing featuring a Linear Ball Bearing with a 20mm ID (inner diameter) inside a housing made of aluminum alloy. Durable Heat Treated Alloy Steel Shell. ISO Metric. Temperature Range: -4/+176°F (-20/+80°C) Variant ID Sizes: Available from 1/4" to 2” Inch Series, 8mm to 50mm Metric Interchangeable: Size..
$69.28
Closed Pillow Block Bearing featuring a Linear Ball Bearing with a 12mm ID (inner diameter) inside a housing made of aluminum alloy. Durable Heat Treated Alloy Steel Shell. ISO Metric. Temperature Range: -4/+176°F (-20/+80°C) Variant ID Sizes: Available from 1/4" to 2” Inch Series, 8mm to 50mm Metric Interchangeable: Size..
$58.63
Open Pillow Block Bearing featuring a Linear Ball Bearing with a 25mm ID (inner diameter) inside a housing made of aluminum alloy. Durable Heat Treated Alloy Steel Shell. Temperature Range: -4/+176°F (-20/+80°C) Variant ID Sizes: Available from 1/4" to 2” Inch Series, 8mm to 50mm Metric Interchangeable: Size interchangeable with..
$123.58
Open Pillow Block Bearing featuring a Linear Ball Bearing with a 30mm ID (inner diameter) inside a housing made of aluminum alloy. Durable Heat Treated Alloy Steel Shell. ISO Metric. Temperature Range: -4/+176°F (-20/+80°C) Variant ID Sizes: Available from 1/4" to 2” Inch Series, 8mm to 50mm Metric Interchangeable: Size..
$184.67
Open Pillow Block Bearing featuring a Linear Ball Bearing with a 16mm ID (inner diameter) inside a housing made of aluminum alloy. Durable Heat Treated Alloy Steel Shell. ISO Metric. Temperature Range: -4/+176°F (-20/+80°C) Variant ID Sizes: Available from 1/4" to 2” Inch Series, 8mm to 50mm Metric Interchangeable: Size..
$78.24
Open Pillow Block Bearing featuring a Linear Ball Bearing with a 20mm ID (inner diameter) inside a housing made of aluminum alloy. Durable Heat Treated Alloy Steel Shell. Temperature Range: -4/+176°F (-20/+80°C) Variant ID Sizes: Available from 1/4" to 2” Inch Series, 8mm to 50mm Metric Interchangeable: Size interchangeable with..
$85.67
Open pillow block bearing featuring a linear ball bearing with a 50mm inner diameter (ID) in accordance with ISO Metric standards, housed in a durable aluminum alloy casing. The shell is made from heat-treated alloy steel for enhanced strength and longevity. Temperature Range: -4/+176°F (-20/+80°C) Variant ID Sizes: Available from..
$353.72
Closed Pillow Block Bearing consisting of a Linear Ball Bearing with a 16mm ID (inner diameter) inside a housing made of aluminum alloy. Durable Heat Treated Alloy Steel Shell. Temperature Range: -4/+176°F (-20/+80°C) Variant ID Sizes: Available from 1/4" to 2” Inch Series, 8mm to 50mm Metric Interchangeable: Size interchangeable..
$64.58
Linear bearings are precision-bored mechanical components with sliding or rolling elements along the bore, enabling low-friction straight-line axial movement on round or square shafts. Open-shelled variants provide clearance for rail-supported shafts or profiled guide rails. Linear bearings are commonly standardized around specific inch, ISO metric, and JIS metric shaft sizes.
In this category, PBC Linear offers sliding element self-lubricating plain linear bearings, rolling element linear ball bearings, and cam roller pillow blocks.
Plain linear bearing options include premium Simplicity® bearings with bonded FrelonGOLD® PTFE liners that serve as the sliding element between the bearing and shaft, providing smooth, self-lubricating, maintenance-free motion without metal-to-metal contact in harsh environments such as extreme heat, dirt, vibration, and high-downtime replacement situations. EconoGlide® bearings provide a low-cost alternative to popular polymer-lined linear bearings, using injection-molded Frelon® IM liners for cleaner applications and easy-access machinery.. These plain bearings support linear, rotational, and oscillating motion, with Simplicity configurations including standard, twin-sized, flanged, pillow block, thin-walled, sleeve bushing, and die set variants.
Linear ball bearings are rolling-element bearings with durable heat-treated outer rings, quiet resin retainers, and high-speed recirculating steel balls. Because they are not subject to the 2:1 binding limitation of plain bearings, they are well suited for cantilevered load applications and are available in standard, twin-sized, flanged, and pillow block housings.
Cam roller pillow blocks use open aluminum housings with one or more sets of 3 opposing coated steel cam rollers that run on rail-supported round shafts for long linear travel with high loads.
PBC Linear Specifications for Simplicity Plain Linear Bearings:
- Self-Lubricating Bearing Liner is Bonded to the Bore ID: FrelonGOLD® is standard;
- Optional liners: Frelon®J for corrosive chemical conditions; Frelon®W (FDA compliant)
- Temperature Rating: -400°F/+400°F or -240°C/204°C
- ID Sizes: Available from 3/16” to 4” Inch Series, 5mm to 80mm Metric Series
- Maximum Horizontal Static Load: 2,165-100,500 lb (982- 45,586 kg)l
- Maximum Speed: Up to 8 m/s (315 in/s)
- Shaft Lengths: Up to 12 feet
- Shell Material: Standard is aluminum; stainless steel shells are available
- Self-Lubricating: Provides oil-free operation
- 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
Specifications for EconoGlide Plain Linear Bearings:
- Injection Molded Polymer Bearing ID Liner
- Temperature Rating: -58ºF/+194ºF (-50ºC/+90ºC)
- ID Sizes: 3/8” to 2” and 8mm to 50mm
- Maximum Speed: 1.5 m/s
- Shell Material: standard is aluminum; stainless steel shells are available
- Self-Lubricating: Provides oil-free operation
- 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
- Bearings available in inch and metric sizes; Flanged bearings are in metric sizes
Specifications for Linear Ball Bearings:
- Temperature Range: -4/+176°F (-20/+80°C)
- ID Sizes: Available from 1/4" to 2” Inch Series, and 8mm to 50mm Metric Series
- Static Load Capacities: Up to 1700 lb (7900 N)
- Dynamic Load Capacities: Up to 850 lb (3800 N)
- Interchangeable: Size interchangeable with industry standards and the Simplicity plain linear bearing series
- Low Coefficient of Friction: Ensures smooth operation
- Heat Treated Alloy Steel Shell: Provides durability
- Resin Retainer: Reduces noise
- Double Seals: Included as standard at no additional cost
Specifications for Roller Bearing Pillow Blocks:
- Use a floating "F" part number for each opposing block on parallel shafts to accommodate imperfect alignments.
- A set of opposing roller bearings consists of 1 fixed side roller, 1 eccentric side roller (to account for any misalignment) and a top support roller
- FUBK Series replacement kits include one new roller for each of the three in a set
- Order two replacement kits to cover more than one set of opposing bearings
Frequently Asked Questions
What is the difference between plain linear bearings and linear ball bearings?
Plain linear bearings use self-lubricating liners and are ideal for harsh environments, while linear ball bearings use recirculating steel balls for low friction and higher-speed performance.
What are the benefits of plain linear bearings?
Plain linear bearings provide maintenance-free, self-lubricating operation and perform well in environments with heat, dirt, debris, and vibration.
What are the advantages of linear ball bearings?
Linear ball bearings deliver high-speed, low-friction performance and eliminate the 2:1 binding limitation of plain bearings in cantilevered applications.
Which linear bearing is best for dirty or harsh environments?
Plain linear bearings are best suited for dirty or harsh environments because their self-lubricating liners resist contamination from dust, debris, and moisture.
Which linear bearing is best for high-speed applications?
Linear ball bearings are ideal for high-speed applications due to their low coefficient of friction and recirculating ball design.
When should cam roller pillow blocks be used?
Cam roller pillow blocks are ideal for heavy-load, long-travel applications, using coated steel cam rollers in open housing designs for durable performance along rail-supported round shafts.
Do linear ball bearings require lubrication?
Yes, most linear ball bearings require lubrication for optimal performance and service life, unlike self-lubricating plain bearings.
What motions do plain linear bearings support?
Round shaft plain bearings support rotary, linear, and oscillating motion, while square shaft versions support linear and oscillating motion only.
Are linear bearings interchangeable with industry standards?
Yes, most linear bearings are dimensionally interchangeable with industry-standard sizes.
What sizes are available for linear bearings?
Linear bearings match standard shaft sizes and are available in inch, metric, and JIS sizing.
What is the difference between plain linear bearings and linear ball bearings?
Plain linear bearings use self-lubricating liners and are ideal for harsh environments, while linear ball bearings use recirculating steel balls for low friction and higher-speed performance.
What are the benefits of plain linear bearings?
Plain linear bearings provide maintenance-free, self-lubricating operation and perform well in environments with heat, dirt, debris, and vibration.
What are the advantages of linear ball bearings?
Linear ball bearings deliver high-speed, low-friction performance and eliminate the 2:1 binding limitation of plain bearings in cantilevered applications.
Which linear bearing is best for dirty or harsh environments?
Plain linear bearings are best suited for dirty or harsh environments because their self-lubricating liners resist contamination from dust, debris, and moisture.
Which linear bearing is best for high-speed applications?
Linear ball bearings are ideal for high-speed applications due to their low coefficient of friction and recirculating ball design.
When should cam roller pillow blocks be used?
Cam roller pillow blocks are ideal for heavy-load, long-travel applications, using coated steel cam rollers in open housing designs for durable performance along rail-supported round shafts.
Do linear ball bearings require lubrication?
Yes, most linear ball bearings require lubrication for optimal performance and service life, unlike self-lubricating plain bearings.
What motions do plain linear bearings support?
Round shaft plain bearings support rotary, linear, and oscillating motion, while square shaft versions support linear and oscillating motion only.
Are linear bearings interchangeable with industry standards?
Yes, most linear bearings are dimensionally interchangeable with industry-standard sizes.
What sizes are available for linear bearings?
Linear bearings match standard shaft sizes and are available in inch, metric, and JIS sizing.
Types of Linear Bearings: Linear Plain Bearings, Linear Plain Bearing Flange Mounts, Linear Plain Sleeve Bearings, Linear Plain Pillow Block Bearings, Linear Plain Bearing Flange Die Set Bushings, Linear Plain Square Bearings, Linear Ball Bearings, Linear Ball Bearing Flange Mounts, Linear Ball Bearing Pillow Blocks, Roller Pillow Block Bearings, Single Roller Pillow Block Bearings, Double Roller Pillow Block Bearings, Twin Roller Pillow Block Bearings
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