- JHC-12: Grinding wheel outer diameter ø305mm; suitable for workpiece diameter ø1~40mm
- Model 18: Grinding wheel outer diameter ø455mm / Regulating wheel outer diameter ø255mm; suitable for workpiece diameter ø1~100mm
- Model 20: Grinding wheel outer diameter ø455mm / Regulating wheel outer diameter ø305mm; suitable for workpiece diameter ø1~100mm
- Model 24H: Grinding wheel outer diameter ø610mm / Regulating wheel outer diameter ø305mm; suitable for workpiece diameter ø2~150mm
- Model 24T: Grinding wheel outer diameter ø610mm / Regulating wheel outer diameter ø305mm; suitable for workpiece diameter ø2~230mm
We can assist customers with grinding solution planning, selecting the appropriate machine model and automatic loading / unloading device based on the size, material, and grinding process requirements of the workpiece.
Contact your sales representative and get further details.
Centerless grinding is a high-precision machining process used to remove material from cylindrical workpieces without requiring center holes or a chuck. Instead, the workpiece is supported on a workrest blade between the grinding wheel and the regulating wheel.
Grinding Methods & Applications of JAINNHER JHC Centerless
- Thru-feed Grinding: Ideal for straight, headless cylindrical components (such as rods, pins, and shafts). The workpiece passes completely through the wheels, making it ideal for continuous, high-volume production.
- In-feed Grinding: Ideal for complex workpieces with shoulders, steps, flares, or multiple diameters. The grinding wheel feeds while the workpiece is held in a fixed position on the workrest blade. Machine solutions with loading and unloading devices can be designed to suit different grinding requirements.
- Form Grinding: A specialized variation of in-feed grinding used for shaped, intricate profiles (e.g., ball studs or profiled rollers).
JHC Centerless Grinders: Overview & Product Lineup
Jainnher offers a versatile lineup of centerless grinding machines tailored to diverse manufacturing requirements—from standard high-precision parts to heavy-duty, long bar grinding.
JHC-12 / 18 / 20 Series | Conventional Manual Grinders
- Ideal Workpiece Diameter: ø1~100mm
- Key Features: Cost-effective conventional models designed for versatile everyday production, providing high reliability for general precision grinding.
JHC-24H Series | High-Rigidity Hydrostatic Spindle
- Ideal Workpiece Diameter: ø2~150mm
- Key Features: Equipped with advanced hydrostatic bearings on the grinding wheel spindle. This design minimizes friction, boosts rigidity, and delivers superior damping, enabling heavy-duty cutting with high precision while extending spindle lifespan.
JHC-24T Series | Symmetrical Feeding for Long Bar Stock
Unlike standard centerless grinders, the JHC-24T series adopts a symmetrical feeding direction for both grinding and regulating wheels. Combined with Jainnher's design long-bar loading and unloading systems, it is capable of handling bars up to a maximum outer diameter of ø230mm.
- JHC-2408T Series: Features a hydrostatic grinding wheel spindle for workpieces ranging from ø2~230mm.
- JHC-2416T & JHC-2424T Series: Built with high-load hydrostatic bearings on the spindle, ideal for heavy-duty long bar grinding of workpieces ranging from ø6~230mm.
QA
How to Choose the Right Centerless Grinder for My Application?
The right centerless grinder depends on factors such as workpiece diameter, material, geometry, grinding method, required accuracy, production volume, and loading and unloading requirements. Jainnher offers different centerless grinding configurations for thru-feed, in-feed, form grinding, and long-bar applications. Our team can evaluate your workpiece and production requirements to recommend a suitable machine configuration. Contact us to discuss your grinding requirements and find the right solution for your application.
Who is Jainnher and what does the company specialize in?
Jainnher is a manufacturer of precision grinding machines specializing in centerless, cylindrical, internal, thread and vertical grinding solutions. With a range of JHC centerless grinders, Jainnher provides solutions for different workpiece sizes, grinding methods, production requirements, and automation needs.
What types of centerless grinding machines does Jainnher offer?
Jainnher offers a range of JHC centerless grinding machines designed for different workpiece sizes, grinding applications, and production requirements. The lineup includes conventional manual grinders, high-rigidity models with hydrostatic grinding wheel spindles, and long-bar centerless grinders with symmetrical feeding and specialized loading and unloading systems. Workpiece capacities range from small precision components to long bar stock up to ø230 mm, depending on the model.
Can Jainnher provide automation for centerless grinding?
Yes. Jainnher can provide loading and unloading solutions tailored to different workpiece sizes, shapes, and production requirements. Automation options can be integrated with the grinding machine to support more consistent and efficient production, from individual workpiece handling to high-volume manufacturing.