Linear Ball Bearing

Linear Ball Bearings

Linear ball bearings are rolling-element linear bearings that use recirculating steel balls instead of sliding elements for low-friction motion along a straight-line axis with one degree of freedom. They are better suited than plain bearings for higher speeds, longer strokes, and overhanging cantilevered loads where the 2:1 binding rule can be a concern. PBC Linear linear ball bearings feature heat-treated alloy steel shells for durability, precision steel balls for smooth travel, polymer resin retainers for reduced noise, and standard double seals to help keep contaminants out. Available in closed, open, and adjustable configurations, they cover inch sizes from 1/4" to 2" ID and metric sizes from 8mm to 50mm ID. These bearings are dimensionally interchangeable with industry standards and are available as standalone cylindrical bearings, pillow blocks, flanged units, and double-sized versions for added load support. Typical load ratings reach up to 1700 lb. (7900 N) static and 850 lb. (3800 N) dynamic, with reliable operation across temperatures from -4°F to 176°F (-20°C to 80°C).

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Linear Ball Bearings

324 products
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324 products
Open Linear Ball Bearing Pillow Block with a 1/2" ID (inner diameter) bearing inside a housing made of aluminum alloy. Size interchangeable with industry standards and our Simplicity plain linear bearing series. Open shell for use with linear rail supported round shafts Temperature Range: -4/+176°F (-20/+80°C) Variant ID Sizes: Available..
$71.00
Linear Ball Bearing Pillow Block, closed, with a 1" ID (inner diameter), featuring a linear ball bearing inside an aluminum alloy housing, incorporating a heat-treated alloy steel shell for enhanced durability, a resin retainer polymer cage for reduced noise, and double seals at no extra cost for contaminant protection. Size-interchangeable..
$103.08
Closed Pillow Block Bearing featuring a Linear Ball Bearing with a 10mm ID (inner diameter) inside a housing made of aluminum alloy.  Temperature Range: -4/+176°F (-20/+80°C) Variant ID Sizes: Available from 1/4" to 2” Inch Series,  8mm to 50mm Metric  Interchangeable: Size interchangeable with industry standards and our Simplicity plain..
$53.59
Closed Pillow Block Bearing consisting of a Linear Ball Bearing with a 25mm ID (inner diameter) inside a housing made of aluminum alloy. Temperature Range: -4/+176°F (-20/+80°C) Variant ID Sizes: Available from 1/4" to 2” Inch Series,  8mm to 50mm Metric  Interchangeable: Size interchangeable with industry standards and our Simplicity..
$98.48
Extended Plain Linear Bearing with a 16mm compensated ID consisting of a round flanged aluminum housing (end mount) with a self-lubricating FrelonGold® lining for maintenance-free linear, rotational or oscillating motion in harsh conditions like extreme heat, dirt, and vibration. Extended aluminum housing with a self-lubricating FrelonGOLD® liner Round Flanged End  ..
$80.17
Thin-walled linear ball bearing with an 8mm ISO metric bore, designed for compact applications requiring minimal radial space. Closed shell protects internal ball races from contamination. Ideal for cantilevered loads not subject to the 2:1 plain bearing binding rule. Used in machinery, automation equipment, and precision instruments. Part Number KHP08..
$11.69
Thin-walled linear ball bearing with a 6mm ISO metric bore, designed for compact applications requiring minimal radial space. Closed shell protects internal ball races from contamination. Ideal for cantilevered loads not subject to the 2:1 plain bearing binding rule. Used in machinery, automation equipment, and precision instruments. Part Number KHP06..
$11.50
Closed linear ball bearing with a 1" ID, self-aligning, featuring a heat-treated alloy steel shell and resin retainer for reduced noise. It offers a low coefficient of friction, includes double seals at no extra cost, and operates from -4°F to 176°F (-20°C to 80°C). Variants available in sizes from 1/4"..
$52.52
Closed linear ball bearing with a 3/4" ID, self-aligning, featuring a heat-treated alloy steel shell and resin retainer for reduced noise. It offers a low coefficient of friction, includes double seals at no extra cost, and operates from -4°F to 176°F (-20°C to 80°C). Variants available in sizes from 1/4"..
$32.68
Square Flanged Linear Ball Bearing, End Mount with a 50mm ISO Metric inner diameter and double wide design for higher cantilevered load capacity. The heat-treated alloy steel shell ensures durability, while the resin retainer polymer cage minimizes noise and the low coefficient of friction enhances speed. End Flange Mount and..
$278.22
Round Flanged Linear Ball Bearing with a 50mm ID and standard housing size features a heat-treated alloy steel shell for durability and a low coefficient of friction for speed. A resin retainer polymer cage ensures quiet operation. Ideal for cantilevered applications, it performs best in low-debris environments.  Temperature Range: -4/+176°F..
$158.43
Double-sized, Round Flanged Linear Ball Bearing 40mm ID JIS Metric, center mount, 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..
$94.23
Square Flanged Linear Ball Bearing with a 40mm ISO Metric inner diameter, center mount and double wide design for higher cantilevered load capacity. The heat-treated alloy steel shell ensures durability, while the resin retainer polymer cage minimizes noise and the low coefficient of friction enhances speed. Center Flange Mount and..
$190.99
Square Flanged Linear Ball Bearing, End Mount, with a 40mm ISO Metric inner diameter and double wide design for higher cantilevered load capacity. The heat-treated alloy steel shell ensures durability, while the resin retainer polymer cage minimizes noise and the low coefficient of friction enhances speed. Temperature Range: -4/+176°F (-20/+80°C)..
$144.16
Double Linear Ball Bearing 40mm ID Round-Flanged Center Mount featuring a heat-treated alloy steel shell for durability. With a low coefficient of friction and a resin retainer polymer cage, this enhanced sized linear ball bearing ensures smooth, quiet, high-speed operation and it has an advantage in cantilevered applications over plain..
$182.92
Linear ball bearing, closed, with a 2" inner diameter (ID). Its ball bearing design provides high speed linear motion with a low coefficient of friction and offers an advantage in cantilevered applications where plain bearings may be limited by the 2:1 binding rule. The heat-treated alloy steel shell provides durability,..
$108.31
Double-sized, Round Flanged Linear Ball Bearing 30mm ID JIS Metric, center mount, 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..
$82.42
Linear ball bearing, closed, with a 1.5" inner diameter (ID). Its ball bearing design provides high speed linear motion with a low coefficient of friction and offers an advantage in cantilevered applications where plain bearings may be limited by the 2:1 binding rule. The heat-treated alloy steel shell provides durability,..
$62.14
Double linear ball bearing, closed, with a 30mm 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..
$118.02
Double Linear Ball Bearing 25mm 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..
$47.87

Linear Ball Bearings

324 products

Linear ball bearings are rolling-element linear bearings that use recirculating steel balls instead of sliding elements for low-friction motion along a straight-line axis with one degree of freedom. They are better suited than plain bearings for higher speeds, longer strokes, and overhanging cantilevered loads where the 2:1 binding rule can be a concern. PBC Linear linear ball bearings feature heat-treated alloy steel shells for durability, precision steel balls for smooth travel, polymer resin retainers for reduced noise, and standard double seals to help keep contaminants out. Available in closed, open, and adjustable configurations, they cover inch sizes from 1/4" to 2" ID and metric sizes from 8mm to 50mm ID. These bearings are dimensionally interchangeable with industry standards and are available as standalone cylindrical bearings, pillow blocks, flanged units, and double-sized (twin) versions for added load support. Typical load ratings reach up to 1700 lb. (7900 N) static and 850 lb. (3800 N) dynamic, with reliable operation across temperatures from -4°F to 176°F (-20°C to 80°C).

Standard Linear Ball Bearings

Linear Ball Bearings from PBC Linear provide unmatched performance in linear motion with compatibility for industry standards. These bearings feature durable, heat-treated alloy steel shells and resin retainers for quieter operation and reduced friction.

Feature Specification
Temperature Range -4°F to +176°F (-20°C to +80°C)
Material Heat-treated alloy steel shells
Designs Wide range including double wide and thin wall
Styles Closed Open Double Wide Thin Wall


Linear Ball Bearing Flange Mounts

Designed for compact and efficient installation, Linear Ball Bearing Flange Mounts excel in high-speed applications. These mounts offer outstanding load capacities and low friction for enhanced performance.

Feature Specification
Inner Diameter Range 8 mm to 50 mm
Static Load Capacity Up to 15,900 N
Dynamic Load Capacity Up to 6,080 N
Designs Double wide options available
Styles Round Square Round Center Mount Square Center Mount Double Wide


Linear Ball Bearing Pillow Blocks

Linear Ball Bearing Pillow Blocks are designed for versatile mechanical applications, featuring aluminum alloy housings and ball bearing inserts for stability and efficiency. These blocks accommodate high loads while minimizing friction.

Feature Specification
Static Load Capacity Up to 7,900 N (1,700 lb)
Dynamic Load Capacity Up to 3,800 N (850 lb)
Designs Open and closed configurations
Styles Closed Single Closed Twin Open Single Open Twin

Frequently Asked Questions

When should I use linear ball bearings?
Use linear ball bearings when you need smooth, high-speed linear motion with minimal friction and good performance under overhung or cantilevered loads.
What are the main practical use differences between plain linear bearings and linear ball bearings?
Linear ball bearings differ from plain linear bearings in three key ways: (1) they resist rotation and provide more controlled, single-axis motion; (2) they handle cantilevered loads better, avoiding the ~2:1 binding limitation common in plain bearings; and (3) they support higher speeds due to rolling contact instead of sliding friction.