Bearing grinding machines grind inner rings, outer rings and rollers with high precision. Today, manufacturers rely on CNC technology to achieve better accuracy, improved surface finish, and higher productivity.
In this page, we explain how internal (ID), external (OD) and centreless grinding machines work in bearing manufacturing. Additionally, you can explore our full range on our grinding machine homepage.
CNC Internal Grinding Machine for Bearing Bore (ID) Grinding Applications
Our CNC internal grinding machine for bearing bore grinding delivers precise results for straight, taper, and radius bore grinding. Moreover, it ensures excellent repeatability and surface finish. As a result, it is suitable for high-precision applications.
Internal Grinding Applications
Taper Roller Bearing (Inner & Outer Ring Bore)
The machine finishes inner ring bores accurately and also grinds taper bores (10°–30°). Therefore, it maintains precise taper geometry. In addition, the grinding zone is highlighted in golden yellow.
- Suitable for high-accuracy taper bore and straight bore with oscillation grinding applications.
- Recommended with in-process gauging for inner ring bore for high accuracy and smooth operation.
Ball Bearing (Inner & Outer Ring + Groove)
The machine grinds inner and outer ring bores and forms grooves using a 3rd axis radius dressing attachment. Additionally, it maintains consistent raceway geometry.
- Ideal for precise raceway grinding.
- In-process gauging system is recommended for inner ring bore to maintain consistent accuracy and automatic size control.
- Plunge (track) grinding application for internal groove and oscillation grinding application for straight bore grinding.
Spherical Roller Bearing (Radius Bore and straight Bore)
The system generates radius on grinding wheel using X–Z axis synchronous movement and performs plunge grinding in bores. Furthermore, it finishes inner ring bores using oscillation grinding.
- Moreover, In-process gauging system is recommended for inner ring bore for reliable size control and reduced operator dependency.
- Plunge (track) grinding application for radius bore and oscillation grinding application for straight bore grinding.
Learn more:
Enhancing Productivity in Grinding Machines
CNC External Grinding Machine for Bearing OD Grinding Applications
Our CNC external grinding machine for bearing OD grinding performs plunge, taper, and profile grinding with high precision. As a result, it delivers excellent roundness and surface finish.
In addition, a gantry-type auto loading and unloading system is available (optional). Therefore, it increases productivity significantly.
External Grinding Applications
Taper Roller Bearing – Inner Ring OD
The machine performs OD plunge grinding and adjusts taper using a tilting workhead. The grinding zone is highlighted in golden yellow. Therefore, it delivers accurate taper results.
- Optional: Gantry auto loading system
- Plunge (track) grinding applications
Ball Bearing – Inner Ring OD Groove
The system uses a servo-driven 3rd axis radius dressing attachment to generate groove profiles on grinding wheel. Moreover, it ensures repeatable results in production.
- Optional: Gantry auto loading system
- Plunge (track) grinding applications
Spherical Roller Bearing – Inner Ring OD Profile
The machine performs profile grinding using X–Z axis synchronous dressing. As a result, it generates precise radius on both sides.
- Optional: Gantry auto loading system
- Plunge (track) grinding applications
Spherical Roller – Roller Grinding
The machine grinds rollers using special attachments. Consequently, it ensures uniform geometry. Furthermore, it supports batch production.
- Suitable for high-precision roller manufacturing with consistent batch quality.
Read more:
What is Cylindrical Grinding Machine?
Centreless Grinding Machine for Bearing OD Grinding Applications
Our centreless grinding machine for high-production bearing OD grinding supports continuous through-feed grinding. Therefore, it delivers high productivity. In addition, it ensures consistent output quality.
Centreless OD Grinding Applications
Taper Roller Bearing – Outer Ring OD & Roller
The machine performs through-feed grinding for outer rings and rollers. Moreover, an auto feeder supports continuous roller feeding.
Ball Bearing – Inner & Outer Ring OD
The system ensures high-speed grinding with excellent roundness and surface finish. As a result, it is ideal for mass production. The grinding zone is highlighted in golden yellow.
Spherical Roller Bearing – Outer Ring OD
The machine grinds outer rings with high precision. Therefore, it maintains consistent diameter control.
Plunge Grinding (Special Application)
The machine performs plunge grinding for specific parts. In addition, auto loading systems improve efficiency. Therefore, it reduces manual effort.
Internal vs External vs Centreless Grinding
- Internal Grinding (ID): Used for bore finishing
- External Grinding (OD): Used for outer diameter finishing
- Centreless Grinding: Used for high-production OD grinding
Therefore, each process plays a key role in bearing grinding machines applications.
Automation in Bearing Grinding Machines
Modern bearing grinding machines use:
- CNC control systems
- Gantry-type auto loading/unloading
- In-process gauging systems
As a result, automation reduces rejection, improves productivity, and ensures consistent quality.
Grinding Machine Availability in India
We supply machines across India. For example:
- Grinding Machine in Rajkot
- Grinding Machine in Pune
- Grinding Machine in Jaipur
- Grinding Machine in Delhi
Additional Bearing Applications
Our machines also handle:
- Needle roller bearings
- Angular contact bearings
- Clutch bearings
- UC bearings
- Customized bearing components
For industry standards, refer to ISO and Indian Standards | You can also explore bearing solutions from SKF
Why Choose Our Grinding Machines?
- Complete solution: ID + OD + Centreless grinding
- High precision with low rejection
- Automation-ready (CNC grinding with loader)
- Suitable for mass production & high accuracy applications
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FAQs – Bearing Grinding Machine Applications
Manufacturers use internal (ID), external (OD), centreless, and duplex grinding machines for different bearing components such as inner rings, outer rings, and rollers.
CNC grinding machines are best for taper roller bearings because they offer high accuracy and productivity. Typically, separate internal and external grinding machines handle heavy-duty applications.
ID grinding machines the internal bore of the bearing, while OD grinding finishes the outer diameter. Both processes ensure precision and proper fitment.
Plunge grinding, also called track grinding, feeds the grinding wheel directly into the workpiece without oscillation. Therefore, it is ideal for high-precision and repetitive production.
Centreless grinding removes material from the outer diameter without holding the component. As a result, it is widely used for high-production bearing OD grinding applications.
Yes, like a CNC internal grinding machine can handle multiple internal (ID) grinding applications, such as straight bore, taper bore, and radius bore grinding. However, it cannot perform external (OD) grinding operations, which require a separate CNC external grinding machine.
Yes, modern bearing grinding machines support automation through CNC control, gantry-type auto loading/unloading systems, and automatic cycles.
In-process gauging continuously monitors size during grinding. Therefore, it reduces manual adjustments, improves accuracy, and helps minimize rejection.
