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

EPK25GW 25mm Ball Bearing ISO Metric Closed Square Flange, Polymer Cage Double Wide

Twin Linear Ball Bearing EPK25GW 25mm Square Flanged End Mount

$78.56

Twin Linear Ball Bearing EPK25GW 25mm Square Flanged End Mount

$78.56

Double-sized square-flanged linear ball bearing, 25mm 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..

$78.56

EPF25GW 25mm Ball Bearing ISO Metric Closed Round Flange, Polymer Cage Double Wide

Double Linear Ball Bearing EPF25GW 25mm Round Flanged End

$79.80

Double Linear Ball Bearing EPF25GW 25mm Round Flanged End

$79.80

Double linear ball bearing, 25mm ID ISO metric, round-flanged 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 round end flange allows flexible rotational positioning during installation and avoids corner interference in tight spaces. Recirculating..

$79.80

IPS24-OP 1.50" Self Aligning Inch Ball Bearing Open , Standard Width

Linear Ball Bearing IPS24-OP 1.50" Self Aligning Open

$127.45

Linear Ball Bearing IPS24-OP 1.50" Self Aligning Open

$127.45

Open Linear Ball Bearing, Self-Aligning, with a 1.5" ID and a low coefficient of friction. Constructed with a heat-treated alloy steel shell, the resin retainer effectively reduces noise during operation, while double seals are included as standard at no additional cost. Temperature Range: -4/+176°F (-20/+80°C) Variant ID Sizes: from 1/4"..

$127.45

IP24G-OP 1.50" Linear Ball Bearing Inch Series Open , Polymer Cage Standard Width

Linear Ball Bearing IP24G-OP 1.50" Open

$86.73

Linear Ball Bearing IP24G-OP 1.50" Open

$86.73

Linear ball bearing, open shelled, with a 1.5" 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..

$86.73

JP40G-OP 40mm JIS Metric Ball Bearing Open , Polymer Cage Standard Width

Liinear Ball Bearing JP40G-OP 40mm JIS Metric Open

$73.36

Liinear Ball Bearing JP40G-OP 40mm JIS Metric Open

$73.36

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

$73.36

IP20G-AJ 1.25" Linear Ball Bearing Inch Series Adjustable , Polymer Cage Standard Width

Linear Ball Bearing IP20G-AJ 1.25" Adjustable

$137.42

Linear Ball Bearing IP20G-AJ 1.25" Adjustable

$137.42

Adjustable linear ball bearing, closed, with a 1.25" inner diameter (ID). The adjustable split shell design lets users fine-tune fit and running clearance for smooth, accurate linear motion with a low coefficient of friction. Its ball bearing design offers an advantage in cantilevered applications where plain bearings may be limited..

$137.42

Linear Ball Bearing Flanged JPK25G 25mm JIS

Linear Ball Bearing - Square Flanged JPK25G 25mm JIS Metric

$46.41

Linear Ball Bearing - Square Flanged JPK25G 25mm JIS Metric

$46.41

Linear ball bearing with a JIS 25mm ID, square flanged end-mount standard sized 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..

$46.41

JPF25G 25mm JIS Metric Ball Bearing Closed Round Flange, Polymer Cage Standard Width

Linear Ball Bearing - Round Flange JPF25G 25mm JIS Metric

$46.34

Linear Ball Bearing - Round Flange JPF25G 25mm JIS Metric

$46.34

Round Flanged Linear Ball Bearing with a 25mm ID JIS Metric and standard width, featuring an end-mounted flange, a heat-treated alloy steel shell for durability and double seals for enhanced protection. Boasts a low coefficient of friction for speed and a resin retainer polymer cage for reduced noise. Excels in..

$46.34

JP25GW 25mm JIS Metric Ball Bearing Closed , Polymer Cage Double Wide

Linear Ball Bearing JP25GW 25mm JIS Metric Closed, Double Wide

$69.96

Linear Ball Bearing JP25GW 25mm JIS Metric Closed, Double Wide

$69.96

Linear ball bearing, double-sized and closed, with a 25mm ID JIS Metric, featuring a double wide heat-treated alloy steel shell for greater durability and higher load capacity under cantilevered conditions. Double seals add protection, a low coefficient of friction enables higher speeds, and a resin retainer polymer cage reduces noise...

$69.96

EPK25G 25mm Ball Bearing ISO Metric Closed Square Flange, Polymer Cage Standard Width

Linear Ball Bearing - Square Flange EPK25G 25mm

$46.55

Linear Ball Bearing - Square Flange EPK25G 25mm

$46.55

Square-flanged linear ball bearing, 25mm ID ISO metric, standard-sized, end mount, with a closed heat-treated alloy steel shell for durability on end-supported shafts. The square flange provides secure four-bolt mounting, while recirculating hardened steel balls and a low coefficient of friction support smooth, high-speed travel. A resin retainer polymer cage..

$46.55

EP25GW 25mm Ball Bearing ISO Metric Closed , Polymer Cage Double Wide

Linear Ball Bearing - EP25GW 25mm Closed , Double Wide

$70.00

Linear Ball Bearing - EP25GW 25mm Closed , Double Wide

$70.00

Double linear ball bearing, closed, 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..

$70.00

JP35G-AJ 35mm JIS Metric Ball Bearing Adjustable , Polymer Cage Standard Width

Linear Ball Bearing JP35G-AJ 35mm JIS Metric Adjustable

$66.06

Linear Ball Bearing JP35G-AJ 35mm JIS Metric Adjustable

$66.06

Adjustable linear ball bearing with a 35mm ID JIS Metric, featuring a flexible slit along the side that provides adaptability for imperfect or worn shafts. A standard-sized heat-treated alloy steel shell enhances durability and load capacity, especially in cantilevered applications. Double seals add protection, a low coefficient of friction enables..

$66.06

JP35G 35mm JIS Metric Ball Bearing Closed , Polymer Cage Standard Width

Linear Ball Bearing JP35G 35mm JIS Metric Closed

$54.64

Linear Ball Bearing JP35G 35mm JIS Metric Closed

$54.64

Linear ball bearing, closed shell, with a 35mm 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..

$54.64

IPS20-OP 1.25" Self Aligning Inch Ball Bearing Open , Standard Width

Linear Ball Bearing IPS20-OP 1.25" Self Aligning Open

$92.31

Linear Ball Bearing IPS20-OP 1.25" Self Aligning Open

$92.31

Open Linear Ball Bearing, Self-Aligning, with a 1.25" ID and a low coefficient of friction. Constructed with a heat-treated alloy steel shell, the resin retainer effectively reduces noise during operation, while double seals are included as standard at no additional cost. Temperature Range: -4/+176°F (-20/+80°C) Variant ID Sizes: from 1/4"..

$92.31

IP20G-OP 1.25" Linear Ball Bearing Inch Series Open , Polymer Cage Standard Width

Linear Ball Bearing IP20G-OP 1.25" Open

$74.18

Linear Ball Bearing IP20G-OP 1.25" Open

$74.18

Linear ball bearing, open shelled, with a 1.25" 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..

$74.18

JP30G-AJ 30mm JIS Metric Ball Bearing Adjustable , Polymer Cage Standard Width

Linear Ball Bearing JP30G-AJ 30mm JIS Metric Adjustable

$61.14

Linear Ball Bearing JP30G-AJ 30mm JIS Metric Adjustable

$61.14

Adjustable linear ball bearing with a 30mm ID JIS Metric, featuring a flexible slit along the side that provides adaptability for imperfect or worn shafts. A standard-sized heat-treated alloy steel shell enhances durability and load capacity, especially in cantilevered applications. Double seals add protection, a low coefficient of friction enables..

$61.14

EP30G-AJ 30mm Ball Bearing ISO Metric Adjustable , Polymer Cage Standard Width

Linear Ball Bearing - EP30G-AJ 30mm Adjustable

$61.15

Linear Ball Bearing - EP30G-AJ 30mm Adjustable

$61.15

Adjustable Linear Ball Bearing with a 30mm ISO Metric ID (inner diameter). This adjustable round shaft bushing has a slit down the side which would be used when working with an old shaft or an old machine, or any other environment where parts are not perfectly made. Temperature Range: -4/+176°F..

$61.15

JP35G-OP 35mm JIS Metric Ball Bearing Open , Polymer Cage Standard Width

Linear Ball Bearing JP35G-OP 35mm JIS Metric Open

$68.88

Linear Ball Bearing JP35G-OP 35mm JIS Metric Open

$68.88

Linear ball bearing, open shelled, with a 35mm 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..

$68.88

Linear Ball Bearing Square Flange JPKC20G 20mm JIS Metric

Double Linear Ball Bearing JPKC20G 20mm JIS Metric - Square Flanged Center Mount

$32.92

Double Linear Ball Bearing JPKC20G 20mm JIS Metric - Square Flanged Center Mount

$32.92

Twin linear ball bearing with JIS 20mm 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..

$32.92

JPK20GW 20mm JIS Metric Ball Bearing Closed Square Flange, Polymer Cage Double Wide

Double Linear Ball Bearing Square Flange JPK20GW 20mm - Square Flanged End Mount

$37.87

Double Linear Ball Bearing Square Flange JPK20GW 20mm - Square Flanged End Mount

$37.87

Twin linear ball bearing with JIS 20mm ID, square flanged end-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..

$37.87

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

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Linear Ball Bearings

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