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
Closed self-lubricating plain linear bearing with a 8mm 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. The anodized aluminum shell is both lightweight and sturdy,..
$15.98
Round Flanged Sleeve Bearing with a 35mm inner diameter, 35mm length and closed aluminum alloy shell. This maintenance-free Simplicity® plain bushing is designed for both linear and rotational movement. The self-lubricating bearing liner is FrelonGold®, ensuring durable performance in extreme environments (such as heat or dirt) without catastrophic failure. Temperature..
$69.30
Sleeve Bearing, round flanged with a 1/4" inner diameter, 1/4" length, and closed aluminum alloy shell. This maintenance-free Simplicity® plain bushing is designed for both linear and rotational movement. The self-lubricating bearing liner is FrelonGold®, ensuring durable performance in extreme (such as hot or dirty) environments without catastrophic failure. Temperature..
$13.88
Simplicity® Plain Linear Sleeve Bearing with a 5/8" inner diameter and 3/4" length, with a round flanged end mount. This closed plain bushing is designed for both linear and rotational movement. The self-lubricating, maintenance-free bearing liner is FrelonGold®, ensuring durable performance in hot or dirty environments without catastrophic failure. Temperature..
$20.96
Thin Wall Plain Linear Bearing with a compensated 50mm 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 provides more clearance between the bearing interior and shaft allowing the bearing to perform like a linear..
$117.77
Thin Wall Plain Linear Bearing with a compensated 20mm 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 provides more clearance between the lined interior and shaft allowing the plain bearing to perform like a..
$18.91
Thin Wall Plain Linear Bearing with a precision 20mm 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..
$18.91
Thin Wall Plain Linear Bearing with a precision 6mm 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..
$14.38
Open plain linear bearing with a 5mm ISO Metric precision ID (inner diameter) with a running clearance of 0.0005" per side, featuring a self-lubricating FrelonGOLD® liner for maintenance-free operation in harsh conditions including extreme temperatures, dirt and vibration. ISO Metric - Open anodized aluminum shell Precision running clearance of 0.0005" per..
$19.82
Open plain linear bearing with a compensated 5mm 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..
$19.82
Closed plain linear bearing with a compensated 30mm ISO Metric ID (inner diameter) with a running clearance of 0.0015" per side. Self-Lubricating Bearing Liner is FrelonGOLD®. ISO Metric - Closed Anodized aluminum shell (optional stainless steel) Compensated running clearance of 0.0015" per side Self-Lubricating Bearing Liner: FrelonGOLD® is standard. Operates..
$65.27
Closed plain linear bearing with a compensated 40mm ISO Metric ID (inner diameter) with a running clearance of 0.0015" per side. Self-Lubricating Bearing Liner is FrelonGOLD®. ISO Metric - Closed Anodized aluminum shell (optional stainless steel) Compensated running clearance of 0.0015" per side Self-Lubricating Bearing Liner: FrelonGOLD® is standard. Operates..
$74.87
Closed plain linear bearing with a compensated 5mm ISO Metric ID (inner diameter) with a running clearance of 0.0015" per side. Self-Lubricating Bearing Liner is FrelonGOLD®. ISO Metric - Closed Anodized aluminum shell (optional stainless steel) Compensated running clearance of 0.0015" per side Self-Lubricating Bearing Liner: FrelonGOLD® is standard. Operates..
$15.98
Crowned closed plain linear bearing with a compensated 25mm ID (inner diameter) with a running clearance of 0.0015" per side and 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..
$48.54
Plain linear bearing, closed, with a 40mm 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..
$74.87
Plain linear bearing, closed, with a 30mm 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..
$65.27
Plain linear bearing, closed, with a 10mm 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..
$17.71
Closed plain linear bearing with a 5mm ISO Metric precision ID (inner diameter) with a running clearance of 0.0005" per side. Self-Lubricating Bearing Liner is FrelonGOLD®. ISO Metric - Closed anodized aluminum shell Precision running clearance of 0.0005" per side Self-Lubricating Bearing Liner: FrelonGOLD® is standard. Operates well in harsh..
$15.98
Open plain linear bearing with a 2" 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. Inch Series - Open anodized aluminum shell Precision..
$163.00
Open plain linear bearing with a 1/2" 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. Inch Series - Open anodized aluminum shell Precision..
$25.63
313 products

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