Gothic Arch Track Rollers
Ways to Order
Gothic Arch track roller bearing from the PBC Linear metric-series track roller lineup, featuring a 12mm bore and a 35mm maximum outer diameter. The roller's outer race is ground with a Gothic arch (four-point contact) profile, allowing it to ride smoothly and self-align along a hardened steel shaft or raceway..
$62.13
Gothic Arch track roller bearing from the PBC Linear metric-series track roller lineup, featuring a 8mm bore and a 24mm maximum outer diameter. The roller's outer race is ground with a Gothic arch (four-point contact) profile, allowing it to ride smoothly and self-align along a hardened steel shaft or raceway..
$45.98
Gothic Arch track roller bearing from the PBC Linear metric-series track roller lineup, featuring a 12mm bore and a 35mm maximum outer diameter. The roller's outer race is ground with a Gothic arch (four-point contact) profile, allowing it to ride smoothly and self-align along a hardened steel shaft or raceway..
$55.07
Gothic Arch track roller bearing from the PBC Linear metric-series track roller lineup, featuring a 5mm bore and a 16mm maximum outer diameter. The roller's outer race is ground with a Gothic arch (four-point contact) profile, allowing it to ride smoothly and self-align along a hardened steel shaft or raceway..
$27.09
Gothic Arch track roller bearing from the PBC Linear metric-series track roller lineup, featuring a 8mm bore and a 24mm maximum outer diameter. The roller's outer race is ground with a Gothic arch (four-point contact) profile, allowing it to ride smoothly and self-align along a hardened steel shaft or raceway..
$39.52
Gothic Arch track roller bearing from the PBC Linear inch-series track roller lineup, featuring a 0.375in bore and a 1.21in maximum outer diameter. The roller's outer race is ground with a Gothic arch (four-point contact) profile, allowing it to ride smoothly and self-align along a hardened steel shaft or raceway..
$15.74
Gothic Arch track roller bearing from the PBC Linear metric-series track roller lineup, featuring a 5mm bore and a 16mm maximum outer diameter. The roller's outer race is ground with a Gothic arch (four-point contact) profile, allowing it to ride smoothly and self-align along a hardened steel shaft or raceway..
$22.88
Gothic Arch track roller bearing from the PBC Linear inch-series track roller lineup, featuring a 0.1875in bore and a 0.771in maximum outer diameter. The roller's outer race is ground with a Gothic arch (four-point contact) profile, allowing it to ride smoothly and self-align along a hardened steel shaft or raceway..
$10.83
Gothic Arch track roller bearing from the PBC Linear inch-series track roller lineup, featuring a 0.1875in bore and a 0.771in maximum outer diameter. The roller's outer race is ground with a Gothic arch (four-point contact) profile, allowing it to ride smoothly and self-align along a hardened steel shaft or raceway..
$34.62
Gothic arch track roller bearings are precision cam-roller bearings with a concave Gothic arch profile ground into the outer rolling surface. This profile contacts the mating shaft or rail raceway at four points rather than two. This four-point contact geometry improves load distribution, running accuracy, self-alignment, and load capacity compared with flat or single-radius rollers. PBC Linear uses these rollers throughout its Cam Roller Technology (CRT) linear guide systems, including Redi-Rail® guides.
The sealed, self-contained bearings are available in hardened 52100 chrome bearing steel or corrosion-resistant 440C stainless steel across a range of bore and outer-diameter sizes. They can be used as original equipment, replacement parts, or bearing elements in custom track-roller guide assemblies.
- Precision cam-roller bearings with a concave Gothic arch outer rolling surface
- Four-point contact with the mating shaft or rail raceway instead of two-point contact
- Improved load distribution, running accuracy, self-alignment, and load capacity
- Used throughout PBC Linear Cam Roller Technology (CRT) linear guide systems
- Compatible with Redi-Rail® linear guides
- Sealed, self-contained bearing construction
- Available in hardened 52100 chrome bearing steel
- Available in corrosion-resistant 440C stainless steel
- Offered in multiple bore and outer-diameter sizes
- Suitable for original equipment, replacement parts, and custom track-roller guide assemblies
Frequently Asked Questions
What are Gothic arch track rollers?
Gothic arch track rollers are sealed cam-roller bearings with a concave Gothic arch profile ground into the outer rolling surface. They run along a hardened shaft or rail raceway in linear guide systems.
Why do Gothic arch track rollers create four-point contact, and what are the benefits?
The Gothic arch profile has two curved flanks rather than one continuous circular radius. As the roller surrounds the curved shaft or rail raceway, each flank contacts the mating surface at two separated locations, creating four contact points in cross-section. Compared with two-point contact, this distributes loads across more locations and improves rigidity, running accuracy, alignment, load capacity, and resistance to forces from multiple directions.
Where are Gothic arch track rollers used?
PBC Linear uses Gothic arch track rollers in Cam Roller Technology linear guide systems, including Redi-Rail® guides. They are also available as replacement bearings and for custom track-roller guide assemblies.
What materials are available for Gothic arch track rollers?
Gothic arch track rollers are available in hardened 52100 chrome bearing steel or corrosion-resistant 440C stainless steel, depending on the required load capacity and operating environment.
Are Gothic arch track rollers sealed?
Yes. Gothic arch track rollers use sealed, self-contained bearing construction that retains lubrication and helps protect the internal rolling elements from contamination.
What surface do Gothic arch track rollers contact?
A concave Gothic arch profile is formed into the track roller's outer rolling surface. This surface contacts a hardened shaft or a raceway built into a linear rail.
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