Linear Bearings

Linear bearings are mechanical components that slide or roll along round or square shafts, enabling linear motion by reducing friction. PBC Linear manufactures bearings in the US, including the Simplicity® Plain Linear Bearings that feature a self-lubricating FrelonGold® PTFE liner for maintenance-free sliding in harsh environments. Our Linear Ball Bearings include a durable heat-treated outer ring, a quiet resin retainer polymer cage, and low-friction steel balls for speed. Additionally, our roller pillow blocks come with single, double, or twin sets of coated steel rollers in an open aluminum housing, designed to roll along rail-supported steel shafts for heavy-duty applications. Plain linear bearings support rotary, linear, or oscillating motion, while ball bearings avoid the 2:1 binding ratio associated with plain bearings. Both types are available in single, double, pillow block, and flange mounts, as well as Inch, ISO Metric, and JIS metric ID sizes. Plain bearings also include variants such as sleeve bearings, square bearings, and die set bearings.

PBC Linear® Specifications for Simplicity Plain Linear Bearings:

• Self-Lubricating Bearing Liner: FrelonGOLD® is standard;
• Optional liners include Frelon® J for corrosive chemical conditions and 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 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

Browse the below categories to see the many variants and sizes to choose from. You can also view more product features and loop around back to the online store.

Types of Linear Bearings we offer are: 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