Self-aligning open linear ball bearing 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..
$28.06
Self-aligning open linear ball bearing with a 40mm inner diameter. Featuring a heat-treated alloy steel shell for durability and 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..
$100.35
Self-aligning open linear ball bearing with a 30mm inner diameter. Featuring a heat-treated alloy steel shell for durability and 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..
$73.86
Self-aligning open linear ball bearing with a 50mm inner diameter. Featuring a heat-treated alloy steel shell for durability and 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..
$168.29
Double-sized linear ball bearing, JIS 8mm ID round-flange center mount, with a long heat-treated alloy steel shell for durability, higher load capacity, and improved resistance to moment loading. The double-sized design is equivalent to two standard linear ball bearings mounted back to back, while the center flange provides balanced mounting...
$20.50
Linear ball bearing with a 2" ID, self-aligning and closed-shelled, featuring a heat-treated alloy steel shell for durability and a resin retainer polymer cage for reduced noise. The self-aligning ball-track design helps accommodate minor shaft and housing misalignment, while the low coefficient of friction supports smooth, high-speed linear motion. Linear..
$172.18
Linear ball bearing with a 1.5" ID, self-aligning and closed-shelled, featuring a heat-treated alloy steel shell for durability and a resin retainer polymer cage for reduced noise. The self-aligning ball-track design helps accommodate minor shaft and housing misalignment, while the low coefficient of friction supports smooth, high-speed linear motion. Linear..
$103.81
Linear ball bearing with a 1.25" ID, self-aligning and closed-shelled, featuring a heat-treated alloy steel shell for durability and a resin retainer polymer cage for reduced noise. The self-aligning ball-track design helps accommodate minor shaft and housing misalignment, while the low coefficient of friction supports smooth, high-speed linear motion. Linear..
$74.02
Twin linear ball bearing with JIS 50mm 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..
$166.30
Twin linear ball bearing with JIS 50mm 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..
$131.48
Double-sized, Round Flanged Linear Ball Bearing 50mm 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..
$165.11
Linear Ball Bearing, Round End Flange, Double Sized, 50mm ID JIS Metric, 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..
$132.60
Double-sized square-flanged linear ball bearing, 50mm ID ISO metric, center mount, with a long heat-treated alloy steel shell for higher load and moment capacity. The center flange provides balanced four-bolt mounting and improved resistance to moment loading, while the double-size design is equivalent to two standard bearings mounted back to..
$320.26
Double-sized round-flanged linear ball bearing, 50mm ID, center 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 center flange provides balanced mounting, while the round shape allows flexible rotational positioning and avoids corner interference. Recirculating..
$319.03
Double-sized round-flanged end-mount linear ball bearing, 50mm ISO metric ID 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..
$261.08
Double linear ball bearing, closed, with a 2" 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..
$233.62
Linear ball bearing with a JIS 50mm ID, square flanged end-mount housing, standard-sized 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..
$158.96
Round Flanged Linear Ball Bearing with a 50mm 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..
$154.72
Linear ball bearing, double-sized and closed, with a 50mm 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...
$240.93
Square-flanged linear ball bearing, 50mm 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..
$158.97
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).
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.
Recently Viewed Products
Exclusive section that stores the history of product views
- Choosing a selection results in a full page refresh.
- Opens in a new window.