Linear Ball Bearings

Linear ball bearings are rolling-element linear bearings that use recirculating hardened steel balls instead of sliding elements to provide low-friction, straight-line motion along round shafts with only one degree of freedom. They are better suited than plain linear bearings for higher speeds, longer strokes, and overhanging cantilevered loads due to their lower coefficient of friction and because plain bearings may bind under the 2:1 rule, requiring plain bearing spacing to be at least twice the load overhang, a rule rolling-element bearings are not subject to. PBC Linear linear ball bearings feature heat-treated alloy steel shells for durability, precision steel balls for smooth travel, molded polymer resin retainers for reduced noise, and standard double seals to help keep contaminants out. However, linear ball bearings typically require more maintenance than plain bearings, including periodic lubrication and greater care to keep debris, contamination, shock, and vibration away from the rolling elements. Available in closed, open, adjustable, self-aligning, flanged, pillow block, and double-wide configurations, PBC Linear ball bearings are dimensionally interchangeable with industry standards and cover inch sizes from 1/4 in. to 2 in. ID and metric sizes from 8 mm to 50 mm ID. Static load capacities reach up to 3,500 lb. (15,900 N) and dynamic load capacities up to 1,300 lb. (6,000 N), with operating temperatures from -4°F to 176°F (-20°C to 80°C).

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326 products

Linear Ball Bearing Flanged JPFC30G 30mm JIS

Double Linear Ball Bearing - Round Flanged JPFC30G 30mm JIS Metric, Center Mount

$82.42

Double Linear Ball Bearing - Round Flanged JPFC30G 30mm JIS Metric, Center Mount

$82.42

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

IP24G 1.50" Linear Ball Bearing Inch Series Closed , Polymer Cage Standard Width

Linear Ball Bearing IP24G 1.50" Closed

$62.14

Linear Ball Bearing IP24G 1.50" Closed

$62.14

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

EP30GW 30mm Ball Bearing ISO Metric Closed , Polymer Cage Double Wide

Linear Ball Bearing EP30GW 30mm Closed , Double Wide

$118.02

Linear Ball Bearing EP30GW 30mm Closed , Double Wide

$118.02

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

Linear Ball Bearing Square Flange Center Mount JPKC25G 25mm

Double Linear Ball Bearing JPKC25G 25mm JIS Metric - Square Flanged Center Mount

$47.87

Double Linear Ball Bearing JPKC25G 25mm JIS Metric - Square Flanged Center Mount

$47.87

Twin linear ball bearing with JIS 25mm ID, square flanged center-mount housing, heat-treated alloy steel shell, quiet resin retainer polymer cage, and double seals included as standard. Built to Japanese Industrial Standards, the recirculating ball design provides low-friction, high-speed linear motion and can outperform plain bearings in cantilevered applications where..

$47.87

Linear Ball Bearing EP40G-OP 40mm Open

$74.50

Linear Ball Bearing EP40G-OP 40mm Open

$74.50

Linear ball bearing, open, with a 40mm 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 bearings...

$74.50

IP16GW 1.00" Linear Ball Bearing Inch Series Closed , Polymer Cage Double Wide

Linear Ball Bearing IP16GW 1.00" Closed Double Wide

$68.08

Linear Ball Bearing IP16GW 1.00" Closed Double Wide

$68.08

Double linear ball bearing, closed, with a 1" inner diameter (ID). The twin-size format equals two standard linear ball bearings mounted back-to-back for added stability. Its ball bearing design provides a low coefficient of friction and offers an advantage in cantilevered applications where plain bearings may be limited by the..

$68.08

JP30G 30mm JIS Metric Ball Bearing Closed , Polymer Cage Standard Width

Linear Ball Bearing JP30G 30mm JIS Metric Closed

$51.30

Linear Ball Bearing JP30G 30mm JIS Metric Closed

$51.30

Linear ball bearing, closed shell, with a 30mm ID JIS Metric, featuring a standard-sized heat-treated alloy steel shell that enhances durability and load capacity. Recommended over plain bearings in cantilevered applications as the 2:1 binding rule does not apply. Double seals add protection, a low coefficient of friction enables higher..

$51.30

EP30G-OP 30mm Ball Bearing ISO Metric Open , Polymer Cage Standard Width

Linear Ball Bearing - EP30G-OP 30mm Open

$64.38

Linear Ball Bearing - EP30G-OP 30mm Open

$64.38

Linear ball bearing, open, 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 bearings...

$64.38

IP12GW 3/4" Linear Ball Bearing Inch Series Closed , Polymer Cage Double Wide

Linear Ball Bearing IP12GW 3/4" Closed Double Wide

$38.15

Linear Ball Bearing IP12GW 3/4" Closed Double Wide

$38.15

Double linear ball bearing, closed, with a 3/4" inner diameter (ID). The twin-size format equals two standard linear ball bearings mounted back-to-back for added stability. Its ball bearing design provides a low coefficient of friction and offers an advantage in cantilevered applications where plain bearings may be limited by the..

$38.15

EPK16GW 16mm Ball Bearing ISO Metric Closed Square Flange, Polymer Cage Double Wide

Twin Linear Ball Bearing EPK16GW 16mm Square Flanged End Mount

$43.62

Twin Linear Ball Bearing EPK16GW 16mm Square Flanged End Mount

$43.62

Double-sized square-flanged linear ball bearing, 16mm ID, end mount, with a long heat-treated alloy steel shell for higher load and moment capacity. Equivalent to two standard-sized bearings mounted back to back, the square end flange provides secure four-bolt mounting at the end of the assembly. Recirculating hardened steel balls, a..

$43.62

IP10GW 5/8" Linear Ball Bearing Inch Series Closed , Polymer Cage Double Wide

Linear Ball Bearing IP10GW 5/8" Closed Double Wide

$34.18

Linear Ball Bearing IP10GW 5/8" Closed Double Wide

$34.18

Double linear ball bearing, closed, with a 5/8" inner diameter (ID). The twin-size format equals two standard linear ball bearings mounted back-to-back for added stability. Its ball bearing design provides a low coefficient of friction and offers an advantage in cantilevered applications where plain bearings may be limited by the..

$34.18

IP16G-OP 1.00" Linear Ball Bearing Inch Series Open , Polymer Cage Standard Width

Linear Ball Bearing IP16G-OP 1.00" Open

$44.42

Linear Ball Bearing IP16G-OP 1.00" Open

$44.42

Linear ball bearing, open shelled, with a 1" inner diameter (ID). The open design allows use with supported shafting while the ball bearing design provides smooth, accurate linear motion with a low coefficient of friction. It offers an advantage in cantilevered applications where plain bearings may be limited by the..

$44.42

EP25G-OP 25mm Ball Bearing ISO Metric Open , Polymer Cage Standard Width

Linear Ball Bearing - EP25G-OP 25mm Open

$39.01

Linear Ball Bearing - EP25G-OP 25mm Open

$39.01

Linear ball bearing, open, with a 25mm 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 bearings...

$39.01

EP16GW 16mm Ball Bearing ISO Metric Closed , Polymer Cage Double Wide

Linear Ball Bearing - EP16GW 16mm Closed , Double Wide

$39.13

Linear Ball Bearing - EP16GW 16mm Closed , Double Wide

$39.13

Double linear ball bearing, closed, with a 16mm 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..

$39.13

EP12GW 12mm Ball Bearing ISO Metric Closed , Polymer Cage Double Wide

Linear Ball Bearing - EP12GW 12mm Closed , Double Wide

$33.28

Linear Ball Bearing - EP12GW 12mm Closed , Double Wide

$33.28

Double linear ball bearing, closed, with a 12mm 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..

$33.28

IP12G-OP 3/4" Linear Ball Bearing Inch Series Open , Polymer Cage Standard Width

Linear Ball Bearing IP12G-OP 3/4" Open

$23.44

Linear Ball Bearing IP12G-OP 3/4" Open

$23.44

Linear ball bearing, open shelled, with a 3/4" inner diameter (ID). The open design allows use with supported shafting while the ball bearing design provides smooth, accurate linear motion with a low coefficient of friction. It offers an advantage in cantilevered applications where plain bearings may be limited by the..

$23.44

JP16G 16mm JIS Metric Ball Bearing Closed , Polymer Cage Standard Width

Linear Ball Bearing JP16G 16mm JIS Metric Closed

$16.85

Linear Ball Bearing JP16G 16mm JIS Metric Closed

$16.85

Linear ball bearing, closed shell, with a 16mm ID JIS Metric, featuring a standard-sized heat-treated alloy steel shell that enhances durability and load capacity. Recommended over plain bearings in cantilevered applications as the 2:1 binding rule does not apply. Double seals add protection, a low coefficient of friction enables higher..

$16.85

EPK08GW 8mm Linear Ball Bearing ISO Metric Closed Square Flange, Polymer Cage Double Wide

Twin Linear Ball Bearing EPK08GW 8mm Square Flanged End Mount

$32.99

Twin Linear Ball Bearing EPK08GW 8mm Square Flanged End Mount

$32.99

Double-sized square-flanged linear ball bearing, 8mm ID, end mount, with a long heat-treated alloy steel shell for higher load and moment capacity. Equivalent to two standard-sized bearings mounted back to back, the square end flange provides secure four-bolt mounting at the end of the assembly. Recirculating hardened steel balls, a..

$32.99

IP08G-OP 1/2" Linear Ball Bearing Inch Series Open , Polymer Cage Standard Width

Linear Ball Bearing IP08G-OP 1/2" Open

$20.78

Linear Ball Bearing IP08G-OP 1/2" Open

$20.78

Linear ball bearing, open shelled, with a 1/2" inner diameter (ID). The open design allows use with supported shafting while the ball bearing design provides smooth, accurate linear motion with a low coefficient of friction. It offers an advantage in cantilevered applications where plain bearings may be limited by the..

$20.78

KHP14 14mm Thin Wall Ball Bearing ISO Metric Closed Square Flange,

Thin Wall Linear Ball Bearing KHP14 14mm ISO Metric Closed

$15.11

Thin Wall Linear Ball Bearing KHP14 14mm ISO Metric Closed

$15.11

Thin walled compact linear ball bearing of 14mm ID (inner diameter). The KHP line is great for space sensitive applications. Closed Inner Diameter (ID): 14mm Outer Diameter (OD): 21mm Max Dynamic Load Rating: 620 N Product Line has a range of ISO Metric 6mm to 50mm IDs We recommend certified..

$15.11

326 products

PBC Linear linear ball bearings feature heat-treated alloy steel shells for durability, precision steel balls for smooth travel, molded polymer resin retainers for reduced noise, and standard double seals to help keep contaminants out. However, linear ball bearings typically require more maintenance than plain bearings, including periodic lubrication and greater care to keep debris, contamination, shock, and vibration away from the rolling elements.

Available in closed, open, adjustable, self-aligning, flanged, pillow block, and double-wide configurations, PBC Linear ball bearings are dimensionally interchangeable with industry standards and cover inch sizes from 1/4 in. to 2 in. ID and metric sizes from 8 mm to 50 mm ID. Static load capacities reach up to 3,500 lb. (15,900 N) and dynamic load capacities up to 1,300 lb. (6,000 N), with operating 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.

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Linear Ball Bearings

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Linear Ball Bushings

Flanged Linear Ball Bearings

Linear Ball Bearing Pillow Blocks