PG-9BHD

Centerless Form Grinder

The Glebar Advantage

Using a PG-9BHD, the part is ground centerlessly -- the action of the work and regulating wheels contain and rotate the part without the need to hold the ends. For example, drumsticks have been traditionally made with a back-knife lathe, that rotates a wooden dowel by holding it the ends. This inefficient process leaves extra material at the ends, which must be cut off, requiring the stick to be polished using additional pieces of equipment. With the Glebar PG-9BHD Form Grinder, the drumstick is made in less time, in fewer operations, and is dimensionally more accurate. The highest quality drumsticks in the world are made using Glebar equipment

Automation
Template Tracing Dresser
Safety Enclosure
Multi-Part Grinding

Introducing the PG-9BHD

  • The PG-9BHD Centerless Form Grinder produces spherical or cylindrical components from pre-form or rod in a range of materials, including rubber, ceramics, wood, plastic, glass, and Teflon® (PTFE). The PG-9BHD delivers high throughput and quality results, yet saves production space thanks to a small footprint.
  • Starting with a rod of material, the PG-9BHD can produce intricate cylindrical shapes, or even grind the rod directly into balls. The unique oscillating regulating wheel assembly, used in ball form applications, forces parts to rotate randomly while grinding. This ensures sphericity -- the 3-dimensional roundness of the ball. For this reason, the clear majority of roll-on deodorant balls and golf ball cores in the world are ground on Glebar Form grinders.
  • Designed with longevity in mind, our machines are still working at many customer sites around the world, decades after they were made. Glebar has extensive knowledge of grinding materials from foam to granite and everything in between. Featuring a reliable and time-tested design, customers around the world have come to expect the outstanding results that come with over half a century of experience in plunge grinding. In some industries, the word “Glebar” is synonymous with the process of Form grinding itself
  • Thanks to innovations such as the fast approach valve, we can grind most materials in seconds for a very efficient process. With rock-solid PLC driven control, the PG-9BHD is able to deliver the repeatable results that are increasingly important in a Six Sigma driven world.
  • For a higher precision Form grinder, with linear encoder, motorized slide and touchscreen control, explore the PG-9DHD.
For decades, thousands of different of parts have been ground on Glebar's PG-9BHD. Examples include carbon fiber and Teflon® (PTFE) components, drumsticks, golf ball cores, deodorant balls, check valve balls, pen nibs, fuse bodies, ceramic insulators, billiard balls, and contact lens blanks - to name few.

PG-9BHD Highlights

10” Wide Work Wheel for Multiple Part Per Cycle Capability

10” Wide Work Wheel for Multiple Part Per Cycle Capability

Since this machine accepts a 10" wide grinding wheel, multiple parts per cycle can be generated in a single infeed motion and with our vast knowledge base of material matching, we can marry the optimum grinding wheel to handle almost any material – from foam to diamonds.

Powerful 15HP Motor and Rigid Spindle for Heavy Grinding

Powerful 15HP Motor and Rigid Spindle for Heavy Grinding

The PG-9BHD can be fitted with a 15HP main spindle motor for heavy grinding of materials such as G10 fiberglass turning cylinders into balls. The spindle is a high precision twin grip setup. A hard chrome plated regulating wheel slide is dovetail ground for longevity, yet smooth due to our use of Turcite for gibs.

On-Machine Contour Wheel Dressing

On-Machine Contour Wheel Dressing

The machine is designed for contour dressing directly on the machine. Straight-line or template-tracing hydraulic dressers are also used in certain applications. Glebar also produces offline dressing machines: the manual DM-9B and the fully-automated DM-9CNC.

Automation and Accessories

Automation and Accessories

A variety of feeding systems are available for rod or ball feeding from the top or side of the machine, from semi-automated systems for testing and small production runs all the way up to stainless-steel hoppers that can hold thousands of balls. Custom solutions tailored to specialty applications are also available. 

Key Features

  • Multiple components per cycle
  • Up to 10-1/8 " usable grinding area
  • Oscillating regulating wheel for improved sphericity on ball forms.
  • Hydraulic variable speed regulating wheel drive
  • Hydraulic ram positioning
  • Reliable PLC-driven control
  • Hard-chromed dovetail slide with turcite gib
  • Simple wheel removal and replacement
  • On-machine dressing available
  • Extensive selection of rod or ball feeding systems
  • Multiple components per cycle
  • Up to 10-1/8 " usable grinding area
  • Oscillating regulating wheel for improved sphericity on ball forms
  • Hydraulic variable speed regulating wheel drive
  • Hydraulic ram positioning
  • Reliable PLC-driven control
  • Simple wheel removal and replacement

Specifications

  • Diameter Accuracy : 0.0005" (13µm)
  • Grinding Diameter Capacity : Min 0.002" (0.05mm), Max 4" (100mm)
  • Roundness : 0.0005" (13µm)
  • Work Wheel Diameter : 9" (229mm)
  • Work Wheel Power : 7.5HP (5.6kW), 10HP (7.5kW), or 15HP (11kW)
  • Work Wheel RPM : 2400
  • Work Wheel Length : 10-1/8" (257mm)
  • Regulating Wheel RPM : 10 - 400
  • Machine Footprint : 47”x39”x50” (119x99x127cm)
  • Machine Weight : 2000 lbs.
  • Hydraulic Pump Motor Power : 2HP (1.5kW)

Accessories

Ball Feeder

Ball Feeder

Designed for feeding balls from a hopper assembly, channeling them into singular stations on the plunge grinder.

Contour Work Wheel Dressing Attachment with Storage Box

Contour Work Wheel Dressing Attachment with Storage Box

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.

Template Tracing Work Wheel Dresser

Template Tracing Work Wheel Dresser

Uses a formed template to dress shallow shapes into the grinding wheel. An auto dress version of this dresser available.

Template Tracing Regulating Wheel Dresser

Template Tracing Regulating Wheel Dresser

Uses a formed template to dress shallow shapes into the regulating wheel.

Mist Collector

Mist Collector

Collects and removes debri and dust from the work area.

Off-machine Wheel Balancing System

Off-machine Wheel Balancing System

Comes with arbor, flange with four weights and stand. Balanced grinding wheels are critical for high precision parts.

Programmable Side Feeder

Programmable Side Feeder

Both Z and X axis of feeder have velocity and position control set on the machine touch screen.

Straight-line Regulating Wheel Dresser

Straight-line Regulating Wheel Dresser

Available in manual and hydraulic version.

Three-Stage Recirculating Coolant System

Three-Stage Recirculating Coolant System

30 gallon capacity with two removable settling tanks centrifugal pump & filtration package

Select Case Studies

Select Components Ground on a Glebar PG-9BHD

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.

Golf Ball Cores

Read Case Study >

Felt Pen Tips

Read Case Study >

Bowling Balls
Catalytic Converters
Cedar Balls
Check Valve
Composite Spindles and Rods
Contact Lens Blanks
Cryogenic Insulators
Curtain Rod Fineals
Deodorant Balls
Drum Sticks
Frac Balls
Fuse Bodies
Golf Shafts
High-Performance Polymid Rod
O Rings
Plastic Spindles
Rubber Balls
Rubber Rollers
Screw Driver Handles
Silicon Nitride Balls
Welding Rods
Zirconium Balls

Please fill out as much information as possible. You will receive an email confirmation. One of Glebar engineers will contact you within 24 hours.

Contact Information

 

Files / Drawings Upload

If you have relevant drawings or illustration files, please upload them here. Files should be in .jpg, .pdf, or .tiff format and should be 10MB or less in size. If you need assistance regarding upload, please call us (201) 337-1500

General Information

Need help or have questions?
Please contact Mark Bannayan at 201-644-2020 or mbannayan@glebar.com.

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