Linear Bearing - Closed - Inch Series FL

Plain Linear Bearings - Closed

Closed-shell plain linear bearings from the Simplicity® line feature a self-lubricating FrelonGOLD® liner for maintenance-free operation in harsh environments, handling extreme temperatures from -400°F to +400°F (-240°C to 204°C) and resisting dirt, shock, and vibration. Available in inch (3/16" to 4"), ISO metric (5 mm to 80 mm), and JIS sizes, they are designed for end-supported shafting, with static load capacities up to 166,000 lb (740 kN) and speeds up to 8 m/s (315 in/s). Options include aluminum or stainless steel shells, precision or compensated running clearances (0.0005" or 0.0015" per side), and standard or self-aligning ODs to accommodate misalignment. Interchangeable with many linear ball bearings and some bronze bushings, they are well suited for heavy-load applications involving linear, rotational, or oscillating motion.

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Plain Linear Bearings - Closed

238 products
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238 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
Thin Wall Plain Linear Bearing with a compensated 40mm 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..
$67.37
Thin Wall Plain Linear Bearing with a compensated 25mm 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..
$34.96
Thin Wall Plain Linear Bearing with a compensated 14mm 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..
$18.55
Thin Wall Plain Linear Bearing with a compensated 10mm 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..
$15.95
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 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
Simplicity® Plain Linear Sleeve Bearing with a 7/16" 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..
$18.12
Simplicity® Plain Linear Sleeve Bearing with a 1/4" inner diameter and a length of 3/8" 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® by default, ensuring long-lasting performance in extremely hot and/or dirty..
$14.25
Plain linear bearing, closed, with a 30mm 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..
$65.27
Plain linear bearing, closed, with a 40mm 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..
$74.87
Plain linear bearing, closed, with a 5mm compensated ID 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, rotating and oscillating motion in harsh environments such..
$15.98
Plain linear bearing, self-aligning, closed, with a 25mm compensated ID that provides a 0.0015" running clearance per side on matching round shafts. Encased in a crowned-OD cylindrical anodized aluminum shell, this bearing can pivot slightly within its housing to accommodate angular misalignment between parallel shafts. It features a bonded Simplicity®..
$48.54
Plain linear bearing, closed, with a 30mm 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..
$65.27
Plain linear bearing, closed, with a 40mm 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..
$74.87
Plain linear bearing, closed, with a 5mm 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..
$15.98
Plain linear bearing, closed, with a 10mm 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..
$17.71
Plain linear bearing, closed, with a 1/2" 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..
$18.46
Plain linear bearing, self-aligning, closed, with a 2" compensated ID (inner diameter) that provides a 0.0015" running clearance per side on matching round shafts. Encased in a crowned-OD cylindrical anodized aluminum shell that realigns when there is a slight misalignment between parallel shafts, this bearing features a bonded Simplicity® self-lubricating..
$143.92

Plain Linear Bearings - Closed

238 products

Closed-shell plain linear bearings from the Simplicity® line feature a self-lubricating FrelonGOLD® liner for maintenance-free operation in harsh environments, handling extreme temperatures from -400°F to +400°F (-240°C to 204°C) and resisting dirt, shock, and vibration. Available in inch (3/16" to 4"), ISO metric (5 mm to 80 mm), and JIS sizes, they are designed for end-supported shafting, with static load capacities up to 166,000 lb (740 kN) and speeds up to 8 m/s (315 in/s). Options include aluminum or stainless steel shells, precision or compensated running clearances (0.0005" or 0.0015" per side), and standard or self-aligning ODs to accommodate misalignment. Interchangeable with many linear ball bearings and some bronze bushings, they are well suited for heavy-load applications involving linear, rotational, or oscillating motion.

They offer oil-free operation, vibration damping for smooth and quiet motion, and seal options (nitrile, urethane, viton for ½” ID or 20mm and up). Optional external lubrication and various mounting options, such as O-ring and retaining ring grooves, enhance their versatility. 

  • 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
  • This translates to ID sizes: 4.76 mm (0.19 in) to 101.6 mm (4 in)
  • Maximum Horizontal Static Load: 2,165-100,500 lb (982- 45,586 kg)
  • Static Load Capacities up to 166,000 lb (740 kN)
  • Maximum Speed: Up to 8 m/s (315 in/s);
  • Shell Material: Anodized aluminum; optional stainless steel shells
  • Self-Lubricating: Provides oil-free operation
  • FrelonGold® liner (optional corrosive chemical-resistant Frelon® J or FDA-compliant Frelon® W)
  • 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 or linear rail supported shafts
  • Interchangeable with linear ball bearings and some bronze bushings
  • 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

View the full product features page for plain linear bearings