Machine Tool
MACHINE TOOL BEARINGS
Machine tools keep our economy running. Nearly every manufactured product we touch and use throughout the day has been formed with a CNC machine tool – from the cars we drive to the electronics we use to the equipment that produces and packages our food. These high-precision machines require specialized bearings that ensure smooth movement, reduced friction, load management, and operational efficiency.
We partner with the world’s leading manufacturers of specialized bearings to offer our customers products that can keep up with diverse and demanding production environments. These custom bearings are essential for a wide range of industries that rely on precision manufacturing, such as aerospace, automotive, medical devices, electronics, metalworking, and power generation.
Manufacturers
LI-BE Italy
Based in Northern Italy, LI-BE is the world’s leading manufacturer of specialized machine tool bearings. Ritbearing is one of the primary importers of LI-BE products in the U.S. Their expert team has advanced expertise in the effects of different loads on individual bearing styles, and their bearings are lauded for their ability to handle axial loads from both directions and radial loads.
Their most common machine tool bearings are:
- Axial Angular Contact Ball Bearings – Provide high accuracy and low friction in high-speed applications.
- Axial Radial Bearings – Can support radial and axial loads on machining tools.
- Axial Cylindrical/Needle Roller Bearings – Known for high accuracy and low friction in applications with limited space.

JNS – JAPAN
Japan Nose Seiko is one of Japan’s premier manufacturers of:
- Combined Needle Roller Bearings – Known for their higher load-carrying capacity and ability to withstand oscillation with greater rigidity.
- Stainless Steel Cam Followers – Can accept high radial and shock loads and can be screwed directly into a piece of metal.
- Roller Followers – Mounted on an existing shaft and can accept high radial and shock loads due to their extra thick outer ring design.
Ritbearing is one of the primary importers of JNS products in the U.S.
Features

IRAUNDI - SPAIN
- Crossed roller bearings
- Slewing ring bearings
ORS - TURKEY
- Precision Abec 5 radial ball bearings
RCBD - CHINA
- Precision angular contact ball bearings
- Precision cylindrical roller bearings
SSB - USA
- Thin section bearings (inch dimensions and custom designs available)
TPI - TAIWAN
- Ball screw support bearings
- Precision angular contact ball bearings
NKE - AUSTRIA
- Single row angular contact ball bearings
- Double row angular contact ball bearings
- Four-point angular contact ball bearings
SMT - Japan
- Double row angular contact ball bearings
- Engineered specials
PRECISION ANGULAR CONTACT BEARINGS
- Offer high stiffness
- Ability to carry axial forces in one direction
- Tolerances are typically in the Abec 7 to Abec 9 range
- Non-separable
- Can be provided in a single fashion, pairs, tri-sets or quad sets
PRECISION CYLINDRICAL ROLLER BEARINGS
- Supplied in either single or double row
- Single row design is ideal for higher speed applications
- Double row design is ideal for higher rigidity
- Cylindrical rolling element allows for higher load carrying capacity throughout the bearing
- Can be offered with a tapered bore design
BALL SCREW SUPPORT BEARINGS
- Precision angular contact ball bearings
- Can be made with a large or small design
- Ceramic hybrid design bearings are available upon request
- Ideal for high rigidity applications
CROSSED ROLLER BEARINGS
- High load capacity
- Can receive radial, axial, and moment loads in all directions
- High torsional stiffness
OTHER STYLES OF PRECISION CYLINDRICAL PRODUCT INCLUDE COMBINATION PRODUCTS SUCH AS
- Needle roller bearings
- Axial cylindrical roller bearings
- Axial radial bearings
Applications
AUTOMATIC SCREW MACHINES
- Double row angular contact ball bearings
- Engineered specials
MACHINING CENTERS
- Axial radial bearings
- Crossed roller bearings
GRINDING MACHINES
- Needle roller/axial cylindrical roller bearings
- Angular contact bearings
ROTARY TABLES
- Axial radial bearings
- Thin section bearings
HIGH SPEED SPINDLES
- Precision angular contact ball bearings
LIVE AND DEAD CENTERS
- Double row angular contact ball bearings
- Precision angular contact ball bearings
WATER JET MACHINES
- Double row angular contact ball bearings
CNC
- Precision angular contact ball bearings
OTHER
- Needle roller bearings
- Non-locating bearings used in conjunction with needle roller/axial cylindrical roller bearings
Find The Right Machine Tool Bearings For Your Applications
Know what you need or want some expert advice? Request a quote and our team of experts will work with you to identify the right bearing solution for your performance and budgetary needs.