Double linear ball bearing 3/8" ID square-flanged, end mount featuring a heat-treated alloy steel shell for durability. The double-size design is equivalent to two standard-sized linear ball bearings mounted back to back, with the square flange formed at the end of the extended shell for secure four-bolt mounting. A low..
$31.20
Double linear ball bearing 1/2" ID square-flanged, end mount featuring a heat-treated alloy steel shell for durability. The double-size design is equivalent to two standard-sized linear ball bearings mounted back to back, with the square flange formed at the end of the extended shell for secure four-bolt mounting. A low..
$36.72
Double linear ball bearing 3/8" ID round-flanged, end mount featuring a heat-treated alloy steel shell for durability. The double-size design is equivalent to two standard-sized linear ball bearings mounted back to back, with the round flange formed at the end of the extended shell for flexible rotational positioning during installation..
$42.71
Linear ball bearing 1" ID square-flanged, end mount, standard size, featuring a heat-treated alloy steel shell for durability. The square flange provides secure four-bolt mounting and straightforward alignment with machine frames and mounting surfaces. A low coefficient of friction, recirculating hardened steel balls, and a molded polymer resin retainer support..
$45.71
Linear ball bearing 1.5" ID square-flanged, end mount, standard size, featuring a heat-treated alloy steel shell for durability. The square flange provides secure four-bolt mounting and straightforward alignment with machine frames and mounting surfaces. A low coefficient of friction, recirculating hardened steel balls, and a molded polymer resin retainer support..
$87.83
Linear ball bearing 2" ID square-flanged, end mount, standard size, featuring a heat-treated alloy steel shell for durability. The square flange provides secure four-bolt mounting and straightforward alignment with machine frames and mounting surfaces. A low coefficient of friction, recirculating hardened steel balls, and a molded polymer resin retainer support..
$153.36
Linear ball bearing 3/8" ID square-flanged, end mount, standard size, featuring a heat-treated alloy steel shell for durability. The square flange provides secure four-bolt mounting and straightforward alignment with machine frames and mounting surfaces. A low coefficient of friction, recirculating hardened steel balls, and a molded polymer resin retainer support..
$29.10
Linear ball bearing 3/4" ID square-flanged, end mount, standard size, featuring a heat-treated alloy steel shell for durability. The square flange provides secure four-bolt mounting and straightforward alignment with machine frames and mounting surfaces. A low coefficient of friction, recirculating hardened steel balls, and a molded polymer resin retainer support..
$31.51
Linear ball bearing 1" ID round-flanged, end mount, standard size, featuring a heat-treated alloy steel shell for durability. The round flange allows flexible rotational positioning during installation while avoiding corner interference in tight spaces. A low coefficient of friction, recirculating hardened steel balls, and a molded polymer resin retainer support..
$25.41
Linear ball bearing 3/8" ID round-flanged, end mount, standard size, featuring a heat-treated alloy steel shell for durability. The round flange allows flexible rotational positioning during installation while avoiding corner interference in tight spaces. A low coefficient of friction, recirculating hardened steel balls, and a molded polymer resin retainer support..
$13.17
Linear ball bearing 1/4" ID round-flanged, end mount, standard size, featuring a heat-treated alloy steel shell for durability. The round flange allows flexible rotational positioning during installation while avoiding corner interference in tight spaces. A low coefficient of friction, recirculating hardened steel balls, and a molded polymer resin retainer support..
$13.17
Linear ball bearing pillow block, open, with a 2" self-aligning open-shelled ball bearing mounted inside an aluminum alloy housing. The bearing itself is self-aligning, using an internal ball-track design to accommodate minor shaft and housing misalignment, while the open configuration allows use with rail-supported shafts or profiled rails. A side-mounted..
$491.30
Double-sized linear ball bearing pillow block, open, with a 2" self-aligning open-shelled ball bearing mounted inside an aluminum alloy housing. The bearing, equal in size to two standard bearings placed end to end, uses a self-aligning internal ball-track design to accommodate minor shaft and housing misalignment, while the open configuration..
$945.10
Linear ball bearing pillow block with a 2" ID self-aligning closed-shell ball bearing mounted inside an aluminum alloy housing. The bearing itself is self-aligning, using an internal ball-track design to accommodate minor shaft and housing misalignment. A side-mounted grease zerk fitting provides convenient lubrication access. Interchangeable with industry-standard dimensions, the..
$409.31
Self-aligning closed linear ball bearing with a 20mm 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..
$31.45
Self-aligning closed linear ball bearing 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..
$50.16
Self-aligning closed 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..
$27.40
Self-aligning closed linear ball bearing 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..
$73.41
Self-aligning open linear ball bearing with a 20mm 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..
$31.60
Self-aligning closed linear ball bearing 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..
$100.02
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.
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