Linear ball bearing, open shelled, with a 40mm ID JIS Metric, featuring a standard-sized heat-treated alloy steel shell that enhances durability and load capacity. Recommended over plain bearings in cantilevered applications as the 2:1 binding rule does not apply. Double seals add protection, a low coefficient of friction enables higher..
$73.36
Adjustable linear ball bearing, closed, with a 1.25" inner diameter (ID). The adjustable split shell design lets users fine-tune fit and running clearance for smooth, accurate linear motion with a low coefficient of friction. Its ball bearing design offers an advantage in cantilevered applications where plain bearings may be limited..
$137.42
Square Flanged Linear Ball Bearing 25mm ID JIS Metric and standard sized, featuring an end-mounted flange, a heat-treated alloy steel shell for durability and double seals for enhanced protection. Boasts a low coefficient of friction for speed and a resin retainer polymer cage for reduced noise. Excels in cantilevered applications,..
$46.41
Round Flanged Linear Ball Bearing with a 25mm ID JIS Metric and standard width, featuring an end-mounted flange, a heat-treated alloy steel shell for durability and double seals for enhanced protection. Boasts a low coefficient of friction for speed and a resin retainer polymer cage for reduced noise. Excels in..
$46.34
Linear ball bearing, double-sized and closed, with a 25mm ID JIS Metric, featuring a double wide heat-treated alloy steel shell for greater durability and higher load capacity under cantilevered conditions. Double seals add protection, a low coefficient of friction enables higher speeds, and a resin retainer polymer cage reduces noise...
$69.96
Square Flanged Linear Ball Bearing with a 25mm ID (inner diameter) and standard size with an end flange mount. Features a heat treated allow steel shell for durability, low coefficient of friction for speed and resin retainer for quiet motion. ISO Metric Series - Closed shell for end-supported shafts Handles..
$46.55
Double linear ball bearing, closed, with a 25mm ID (inner diameter). Featuring a heat-treated alloy steel shell for durability, a resin retainer polymer cage for reduced noise and a low coefficient of friction for speed. Handles cantilevered loads better than plain bearings, overcoming the 2:1 binding ratio limitation of plain..
$70.00
Die set plain linear bearing with an aluminum shell, a 40mm ID and a compensated running clearance of 0.0015″ per side in a closed, standard-width design. Features a round flange and self-lubricating FrelonGOLD® liner as standard, which provides optimal performance in extreme conditions such as dirt, heat and vibration. An..
$133.66
Adjustable linear ball bearing with a 35mm ID JIS Metric, featuring a flexible slit along the side that provides adaptability for imperfect or worn shafts. A standard-sized heat-treated alloy steel shell enhances durability and load capacity, especially in cantilevered applications. Double seals add protection, a low coefficient of friction enables..
$66.06
Linear ball bearing, closed shell, with a 35mm ID JIS Metric, featuring a standard-sized heat-treated alloy steel shell that enhances durability and load capacity. Recommended over plain bearings in cantilevered applications as the 2:1 binding rule does not apply. Double seals add protection, a low coefficient of friction enables higher..
$54.64
Square Linear Bearing with a 1" diameter, 4" 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..
$120.97
Open Linear Ball Bearing, Self-Aligning, with a 1.25" ID and a low coefficient of friction. Constructed with a heat-treated alloy steel shell, the resin retainer effectively reduces noise during operation, while double seals are included as standard at no additional cost. Temperature Range: -4/+176°F (-20/+80°C) Variant ID Sizes: from 1/4"..
$92.31
Linear ball bearing, open shelled, with a 1.25" inner diameter (ID). The open design allows use with supported shafting while the ball bearing design provides smooth, accurate linear motion with a low coefficient of friction. It offers an advantage in cantilevered applications where plain bearings may be limited by the..
$74.18
Adjustable linear ball bearing with a 30mm ID JIS Metric, featuring a flexible slit along the side that provides adaptability for imperfect or worn shafts. A standard-sized heat-treated alloy steel shell enhances durability and load capacity, especially in cantilevered applications. Double seals add protection, a low coefficient of friction enables..
$61.14
Adjustable Linear Ball Bearing with a 30mm ISO Metric ID (inner diameter). This adjustable round shaft bushing has a slit down the side which would be used when working with an old shaft or an old machine, or any other environment where parts are not perfectly made. Temperature Range: -4/+176°F..
$61.15
Linear ball bearing, open shelled, with a 35mm ID JIS Metric, featuring a standard-sized heat-treated alloy steel shell that enhances durability and load capacity. Recommended over plain bearings in cantilevered applications as the 2:1 binding rule does not apply. Double seals add protection, a low coefficient of friction enables higher..
$68.88
Closed plain linear bearing with a JIS Metric 38mm ID, compensated with 0.0015" running clearance per side. Its green anodized aluminum shell ensures robust durability, while the FrelonGOLD® liner delivers self-lubricating, maintenance-free performance with vibration damping. Meets JIS metric tolerance standards for precision and compatibility Optional Frelon® J or W..
$80.86
Self-aligning closed plain linear bearing with a 38mm JIS compensated ID that has a 0.0015" running clearance per side. The green anodized aluminum shell ensures robust durability, while the FrelonGOLD® liner delivers self-lubricating, maintenance-free performance with vibration damping. Crowned outer diameter (OD) is self-aligning Meets JIS metric tolerance standards for..
$104.31
Double Linear Ball Bearing 20mm ID JIS Metric Square-Flanged, Center Mount equipped with a long heat-treated alloy steel shell for durability and double seals for added protection. With a low coefficient of friction for speed and a resin retainer polymer cage for reduced noise, this enhanced sized linear ball bearing..
$32.92
Linear Ball Bearing, Square Flanged and Double Sized, 20mm ID JIS Metric, with the flange mount at the end. Equipped with a long heat-treated alloy steel shell for durability and double seals for added protection. With a low coefficient of friction for speed and a resin retainer polymer cage for..
$37.87
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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