Linear Bearing - Plain, Open

Plain Linear Bearings

Plain linear bearings of the Simplicity® line featuring a self-lubricating FrelonGOLD® liner for maintenance-free operation and reliable performance in harsh conditions, including extreme temperatures (-400°F to +400°F), dirt, and vibration. The bearing shells are constructed from anodized aluminum and are available in both open and closed versions, with inner diameters (IDs) ranging from 3/16” to 4” in inches, 5mm to 80mm in metric, and JIS standards. Standard ID clearance is 0.0005" per side, while compensated clearance is 0.0015" per side, supporting static loads up to 166,000 lb (740 kN). Optional seals made of nitrile, urethane, or viton are available for IDs larger than ½” or 20mm. Designed for linear rail or end-supported shafting, these bearings achieve speeds up to 8 m/s while dampening vibration for smooth, quiet operation. Interchangeable with linear ball bearings and some bronze bushings, they ensure durability across various applications.

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Plain Linear Bearings

313 products
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313 products
Thin Wall Plain Linear Bearing with a precision 16mm ID (inner diameter), featuring a self-lubricating FrelonGOLD® liner for maintenance-free operation in harsh conditions like extreme temperatures, dirt and vibration.  Closed - ISO Metric Only Precision running clearance 0.0005" per side Anodized aluminum outer shell - Straight outer diameter Designed for..
$18.55
Thin Wall Plain Linear Bearing with a precision 12mm ID (inner diameter), featuring a self-lubricating FrelonGOLD® liner for maintenance-free operation in harsh conditions like extreme temperatures, dirt and vibration.  Closed - ISO Metric Only Precision running clearance 0.0005" per side Anodized aluminum outer shell - Straight outer diameter Designed for..
$16.62
Open plain linear bearing with a compensated 40mm ISO Metric ID (inner diameter), featuring a self-lubricating FrelonGOLD® liner for maintenance-free operation in harsh conditions like extreme temperatures, dirt and vibration. The compensated running clearance of 0.0015" per side enables the plain bearing to perform like a linear ball bearing. ISO..
$93.14
Open plain linear bearing with a 25mm ISO Metric ID (inner diameter) with a compensated running clearance of 0.0015" per side. Self-Lubricating Bearing Liner is FrelonGOLD®. ISO Metric Series - Open Anodized aluminum shell (optional stainless steel) Compensated running clearance of 0.0015" per side Self-Lubricating Bearing Liner: FrelonGOLD® is standard...
$49.07
Closed Compensated Plain Linear Bearing 25mm ID (inner diameter). The compensated running clearance of 0.0015" per side provides more clearance between the inner diameter and shaft allowing the bearing to perform like a linear ball bearing. Straight outer diameter. ISO Metric Closed Standard Width Self-Lubricating Bearing Liner: FrelonGOLD® is standard Optional..
$38.84
Crowned plain linear bearing, closed, with a compensated 5mm ID (inner diameter) that provides a running clearance of 0.0015" per side. Lined with self-lubricating FrelonGOLD® for maintenance-free operation in harsh conditions like extreme temperatures, dirt and vibration. Crowned self-aligning outer diameter. ISO Metric Series - Closed Anodized Aluminum Shell (Optional..
$19.17
Plain linear bearing, closed, with an 80mm precision ID (inner diameter) that provides a running clearance of 0.0005" per side. Lined with self-lubricating FrelonGOLD® for maintenance-free operation in harsh conditions like extreme temperatures, dirt and vibration. ISO Metric Series - Closed Straight outer diameter (crowned ODs available via the FMA..
$353.77
Crowned plain linear bearing, closed, with a 5mm precision ID (inner diameter) that provides a running clearance of 0.0005" per side. Lined with self-lubricating FrelonGOLD® for maintenance-free operation in harsh conditions like extreme temperatures, dirt and vibration. Crowned self-aligning outer diameter. ISO Metric Series - Closed Crowned outer diameter -..
$19.17
Crowned plain linear bearing, closed, with an 8mm precision ID (inner diameter) that provides a running clearance of 0.0005" per side. Lined with self-lubricating FrelonGOLD® for maintenance-free operation in harsh conditions like extreme temperatures, dirt and vibration. Crowned self-aligning outer diameter. ISO Metric Series - Closed Crowned outer diameter -..
$19.17
Plain linear bearing, closed, with a 16mm precision ID (inner diameter) that provides a running clearance of 0.0005" per side. Lined with self-lubricating FrelonGOLD® for maintenance-free operation in harsh conditions like extreme temperatures, dirt and vibration. ISO Metric Series - Closed shell Straight outer diameter (crowned ODs available via the..
$20.59
Plain linear bearing, open, with a 2" compensated ID, which has a 0.0015" per side running clearance. Housed in an anodized aluminum shell and lined with the renowned self-lubricating FrelonGOLD® liner, this bearing ensures maintenance-free performance in harsh conditions, including extreme temperatures, dirt, and vibration. Inch Series - Open anodized..
$163.00
Plain linear bearing, open, with a 1.5" compensated ID, which has a 0.0015" per side running clearance. Housed in an anodized aluminum shell and lined with the renowned self-lubricating FrelonGOLD® liner, this bearing ensures maintenance-free performance in harsh conditions, including extreme temperatures, dirt, and vibration. Inch Series - Open anodized..
$93.14
Plain linear bearing, closed, with a 3" compensated ID, which has a 0.0015" per side running clearance. Housed in an anodized aluminum shell and lined with self-lubricating FrelonGOLD®, this bearing ensures maintenance-free performance in harsh conditions, including extreme temperatures, dirt, and vibration. Inch Series - Closed anodized aluminum shell Compensated..
$353.77
Plain linear bearing, open, with a 1/2" compensated ID, which has a 0.0015" per side running clearance. Housed in an anodized aluminum shell and lined with self-lubricating FrelonGOLD®, this bearing ensures maintenance-free performance in harsh conditions, including extreme temperatures, dirt, and vibration. Inch Series - Open anodized aluminum shell Compensated..
$25.63
Crowned, closed plain linear bearing with a compensated 4 inch ID (inner diameter) that has a slightly larger running clearance of 0.0015" per side. Self-Lubricating Bearing Liner is FrelonGOLD®. Crowned self-aligning outer diameter.   Inch Series - Closed Anodized Aluminum Shell Compensated running clearance 0.0015" per side Self-Lubricating Bearing Liner: FrelonGOLD®..
$735.89
Crowned, closed plain linear bearing with a compensated 3/16 inch ID (inner diameter) that has a slightly larger running clearance of 0.0015" per side. Self-Lubricating Bearing Liner is FrelonGOLD®. Crowned self-aligning outer diameter.   Inch Series - Closed Anodized Aluminum Shell Compensated running clearance 0.0015" per side Self-Lubricating Bearing Liner: FrelonGOLD®..
$17.59
Crowned, closed plain linear bearing with a compensated 1/2 inch ID (inner diameter) that has a slightly larger running clearance of 0.0015" per side. Self-Lubricating Bearing Liner is FrelonGOLD®. Crowned self-aligning outer diameter.   Inch Series - Closed Anodized Aluminum Shell Compensated running clearance 0.0015" per side Self-Lubricating Bearing Liner: FrelonGOLD®..
$20.32
Closed plain linear bearing with a 2.5" precision ID, which has a 0.0005" per side running clearance. Encased in an anodized aluminum shell and lined with self-lubricating FrelonGOLD®, this bearing ensures maintenance-free performance in harsh conditions, including extreme temperatures, dirt, and vibration; where ball bearings often fail. Inch Series Closed..
$221.11
Open self-lubricating plain linear bearing with a 20mm JIS Metric inner diameter and a precision running clearance of 0.0005" per side. Made with a self-lubricating FrelonGOLD® liner, it offers excellent wear resistance and vibration dampening, ensuring smooth operation without extra lubrication in harsh and/or high temperature environments. The anodized aluminum..
$28.75
Closed self-lubricating plain linear bearing with a 6mm JIS Metric ID and a compensated running clearance of 0.0015" per side. It features a self-lubricating FrelonGOLD® liner for excellent wear resistance, vibration dampening, and reduced friction in harsh and/or high temperature conditions. The green anodized aluminum shell with a straight outer..
$15.98

Plain Linear Bearings

313 products

Plain linear bearings of the Simplicity® line featuring a self-lubricating FrelonGOLD® liner for maintenance-free operation and reliable performance in harsh conditions, including extreme temperatures (-400°F to +400°F), dirt, and vibration. The bearing shells are constructed from anodized aluminum and are available in both open and closed versions, with inner diameters (IDs) ranging from 3/16” to 4” in inches, 5mm to 80mm in metric, and JIS standards. Standard ID clearance is 0.0005" per side, while compensated clearance is 0.0015" per side, supporting static loads up to 166,000 lb (740 kN). Optional seals made of nitrile, urethane, or viton are available for IDs larger than ½” or 20mm. Designed for linear rail or end-supported shafting, these bearings achieve speeds up to 8 m/s while dampening vibration for smooth, quiet operation. Interchangeable with linear ball bearings and some bronze bushings, they ensure durability across various applications.


  • Linear, rotational and oscillating motions possible
  • Static Load Capacities up to 166,000 lb (740 kN)
  • ID sizes: 4.76 mm (0.19 in) to 101.6 mm (4 in)
  • Specific sizes are 3/16” to 4” Inch Series, 5mm to 80mm Metric Series
  • Choose between standard ID running clearance (0.0005" per side) and compensated ID running clearance (0.0015" per side)
  • Options for standard/straight OD or self-aligning/spherical OD to prevent binding
  • Optional liners include corrosive chemical resistant Frelon® J or FDA compliant Frelon® W
  • Temperature Rating: -400°F/+400°F or -240°C/204°C
  • Maximum Speed: Up to 8 m/s (315 in/s);
  • Shaft Lengths: Up to 12 feet
  • Shell Material: Standard is anodized aluminum; stainless steel shells optional
  • 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
  • Designed for use with end-supported shafting
  • Interchangeable with linear ball bearings and some bronze bushings