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).

More About Linear Ball Bearings

Ways to Order

Catalog Preview
Web Catalog Web Catalog Download PDF Download PDF Video Video Features Features

Browse Categories

Linear Ball Bearings

324 products
Close filters
324 products
Linear ball bearing, double-sized and closed, with an 8mm 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...
$30.43
Square Flanged Linear Ball Bearing with an 8mm ID (inner diameter) and standard size with an end flange mount. Features a heat treated allow steel shell for durability, low coefficient of friction for speed and resin retainer for quiet motion. ISO Metric Series - Closed shell for end-supported shafts Handles..
$19.85
Round Flanged Linear Ball Bearing with an 8mm 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..
$19.85
Linear ball bearing, closed shell, with a 10mm 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..
$14.16
Closed Linear Ball Bearing with a 10mm ID (inner diameter). Heat treated allow steel shell for durability, low coefficient of friction for speed and resin retainer for quiet motion. ISO Metric Series - Closed shell for end-supported shafts Handles cantilevered loads better than plain bearings Temperature Range: -4/+176°F (-20/+80°C) Variant..
$13.87
Open Linear Ball Bearing, Self-Aligning, with a 1/2" 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"..
$31.01
Linear ball bearing, open shelled, with a 13mm 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..
$19.01
Linear ball bearing, open shelled, with a 12mm 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..
$18.10
Linear ball bearing, open, 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 bearings...
$20.47
Linear ball bearing, closed shell, with an 8mm 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..
$13.22
Closed Linear Ball Bearing with an 8mm ISO Metric ID (inner diameter). Heat treated allow steel shell for durability, low coefficient of friction for speed and resin retainer for quiet linear motion. Temperature Range: -4/+176°F (-20/+80°C) Variant ID Sizes from 1/4" to 2” Inch Series,  5mm to 50mm Metric  Size..
$13.22
Closed Linear Ball Bearing with a 5mm ISO Metric ID (inner diameter). Heat treated allow steel shell for durability, low coefficient of friction for speed and resin retainer for quiet linear motion. Temperature Range: -4/+176°F (-20/+80°C) Variant ID Sizes from 1/4" to 2” Inch Series,  5mm to 50mm Metric  Size..
$12.65
Thin walled compact linear ball bearing of 40mm ID (inner diameter). The KHP bearings are all closed and are great for space sensitive applications. Inner Diameter (ID): 40mm Outer Diameter (OD): 52mm Max Dynamic Load Rating: 4400 N Product Line has a range of ISO Metric 6mm to 50mm IDs..
$51.05
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
Thin walled compact linear ball bearing of 25mm ID (inner diameter). The KHP line is great for space sensitive applications.  Closed Inner Diameter (ID): 25mm Outer Diameter (OD): 35mm Max Dynamic Load Rating: 1990 N Product Line has a range of ISO Metric 6mm to 50mm IDs We recommend certified..
$45.12
Thin walled compact linear ball bearing of 30mm ID (inner diameter). The KHP compact bearings are all closed and are great for space sensitive applications.  Inner Diameter (ID): 30mm Outer Diameter (OD): 40mm Max Dynamic Load Rating: 2880 N Product Line has a range of ISO Metric 6mm to 50mm..
$41.94
Thin walled closed, compact linear ball bearing of 10mm ID (inner diameter). The KHP line is great for space sensitive applications.  Inner Diameter (ID): 10mm Outer Diameter (OD): 17mm Max Dynamic Load Rating: 500 N Product Line has a range of ISO Metric 6mm to 50mm IDs We recommend certified..
$13.10
Thin walled compact linear ball bearing of 12mm ID (inner diameter). The KHP line is great for space sensitive applications.  Closed Inner Diameter (ID): 12mm Outer Diameter (OD): 19mm Max Dynamic Load Rating: 620 N Product Line has a range of ISO Metric 6mm to 50mm IDs We recommend certified..
$14.35
Twin Linear Ball Bearing Pillow Block, open shelled, with a 3/4" ID (inner diameter) bearing inside a housing made of aluminum alloy. Features a low coefficient of friction for smooth operation, a heat-treated alloy steel shell for durability, a resin retainer to reduce noise, and standard double seals at no..
$137.77
Twin Linear Ball Bearing Pillow Block, closed shell, with a 5/8" ID (inner diameter) bearing inside a housing made of aluminum alloy. Features a low coefficient of friction for smooth operation, a heat-treated alloy steel shell for durability, a resin retainer to reduce noise, and standard double seals at no..
$115.61

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.