Glebar’s PG-912DG Enclosed Centerless Form Grinder uses a 12” wide work wheel and servo motors to reduce setup times, increase throughput, and maintain tighter tolerances. Our engineers didn’t stop there, adding an enclosed design, a simple touch-screen HMI, and remote connectivity and data collection. Combined, these functions help to generate more uptime and produce higher quality parts, something every manufacturer strives to attain.
Touchscreen HMI
Automation
Remote Connectivity
Safety Enclosure
Multi-Part Grinding 
At the core of the PG-912DG is a 12” wide work wheel. The longer wheel allows manufacturers to grind more material or parts per cycle. In testing, Glebar’s engineers were able to increase throughput by as much as 30%.
Fully enclosed with interlocks and a mist collector to provide a safe and clean work environment. The interlocks prevent opening the enclosure while the grinder is running.
Operators can quickly call up a job using the touchscreen HMI, and the servo motors will automatically adjust the oscillating regulating wheel to the pre-programmed position, reducing setup time. This precise positioning enables the PG-912DG to maintain tight tolerances and improve sphericity. In testing, Glebar engineers achieved a Cpk two times greater than the existing process. The thick granite machine bed provides enhanced rigidity, as well as thermal and vibratory stability, maintaining a high-quality part.
The control software is entirely developed at Glebar and is fully customizable to address your application and process. The intuitive touch screen interface allows for ease of use and flexibility. The machine software interface was developed to allow an unskilled operator to run many high precision machines simultaneously.
A variety of feeding systems are available. For feeding rods or balls, the feeder can be positioned from the top or side of the machine. We can also design semi-automated systems for testing and small production runs. Stainless-steel hoppers that can hold thousands of balls are also available. Custom solutions tailored to specialty applications are also available.
Designed for feeding balls from a hopper assembly, channeling them into singular stations on the plunge grinder.
Includes dresser head assembly, Stylus checking system, slide assembly and platen which mounts on the back of the machine. This system enables the user to dress the grinding wheel while still mounted on the machine.
Collects and removes debri and dust from the work area.
Comes with arbor, flange with four weights and stand. Balanced grinding wheels are critical for high precision parts.
Post grinding and cleaning, the data is collected, analyzed and fed back to the machine for automatic size compensation. Measurements are shown on a trend graph on the machine control.
Built specific for the part; integrated into the cell.
Post grinding, system is integrated into the cell to pressure clean parts.
Both Z and X axis of feeder have velocity and position control set on the machine touch screen.
Automatically picks parts from trays, loads into machine, unloads and places back to parts tray. Fully guarded and interlocked access doors. Robot arm incorporates two grippers for staging the loading and unloading during the grind cycle, reducing idle time.
Available in manual and hydraulic version.
30 gallon capacity with two removable settling tanks centrifugal pump & filtration package
Glebar prides itself on selling precision grinding machine system solutions, tailored to your specific needs. Below is a small subset of applications, performed on this machine, that Glebar has provided solutions for over the years.
Glebar’s Applications Division conducts research and development of innovative cutoff and grinding technology. Their most recent focus was to innovate the existing design of our PG-9 series of Centerless Plunge Grinding Machines. The goal was to help customers reduce setup times, increase throughput, and maintain tighter tolerances.
Current Process: Lathes and Hydraulic Form Grinders
In order to shape spherical and cylindrical parts, manufacturers rely on lathes and hydraulically powered form grinders.
Challenges: Complicated Setup, Inconsistent and Slow Process, Manual Operation, and Open Work Environment
Lathes form parts from bar stock one at a time limiting throughput. The setup for a lathe is complicated and labor-intensive requiring a skilled technician. The cutting process relies on a skilled operator working the different gears and levers to bring the cutting tool closer or further from the part affecting the tolerance. With several manually controlled parts, the setup and cutting processes are difficult to replicate, creating inconsistent surface finishes. The open, high-speed cutting environment and manual operation increase the potential of operator injury.
While hydraulically powered form grinders can produce multiple parts per cycle, they too rely on skilled technicians for setup. Several microswitches must be configured to set the grinding sequence. As the hydraulic system warms up, the speed of the regulating wheel fluctuates, making it difficult to control the tolerances. The grinding cell of most hydraulic form grinders is exposed, raising the risk of potential operator injury.
Below is a sample of select components Glebar has ground, on this machine, over the years. Please contact us and send us your drawing for a personal consultation.
PG-912DG Enclosed Centerless Form Grinder
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