Glebar PG-9X20DHD
Image: glebar.com, Glebar
Key Specifications
grinding diameter capacity
work wheel diameter
work wheel length
work wheel power
work wheel speed
regulating wheel power
How much does the Glebar PG-9X20DHD cost?
Price estimate
We do not have a price for the Glebar PG-9X20DHD that we can stand behind, so we show no number. Configuration, options and installation move the final price a long way: a quote is the reliable figure.
Overview
The Glebar PG-9X20DHD is a centerless form grinder stretched to a 20 in (508 mm) work wheel, built for forming long ceramic and carbide blanks while they are still soft. Glebar names unfired carbide and the crystal quartz glass boules used for fibre optics as the target work, ground to near net size. Maximum grinding length is 20 in (508 mm), and part diameter runs from 0.002 in (0.05 mm) to 4 in (100 mm).
It sits on the compact base of the PG-9DHD, and the comparison shows what changed. The PG-9DHD has a 10.125 in (257 mm) wheel and grinds up to 10 in (254 mm) of length. This machine roughly doubles both, and the regulating wheel is extended to match, so several components can be ground at once along the wheel. Spindle power is 15 hp (11 kW) only. Wheel speed is 2,400 rpm, and the regulating wheel runs 10-400 rpm on 2 hp (1.5 kW).
The slide assembly is hard chromed, with a stated resolution of 0.1 micron, and the regulating wheel side is driven by a servo motor. Slide velocity and position are set on a touch-screen HMI running custom-designed software on an industrial workstation. A diamond work wheel of this length is not something to lift by hand, so the machine has a built-in hoist for removing the wheel and spindle assembly.
Listed size is 47 x 39 x 50 in (119 x 99 x 127 cm) and listed weight 1,800 lb (817 kg). Both are worth confirming with Glebar when a machine is specified, because the PG-9DHD is listed at 2,000 lb (908 kg) with a wheel half as long. Services are 480 VAC, 3PH, 60 Hz at 40 A and 3 CFM of air at 80-90 PSI.
Full Specifications
| Parameter | Value |
|---|---|
| Grinding Diameter Capacity | Min 0.002 in (0.05 mm) – Max 4 in (100 mm) |
| Work Wheel Diameter | 9 in (229 mm) |
| Work Wheel Length | 20 in (508 mm) |
| Work Wheel Power | 15 hp (11 kW) |
| Work Wheel Speed | 2,400 rpm |
| Regulating Wheel Power | 2 hp (1.5 kW) |
| Regulating Wheel Speed | 10-400 rpm |
| Machine Weight | 1,800 lb (817 kg) |
| Grinding Length | Max 20 in (508 mm) |
| Power Requirement | 480 VAC, 3PH, 60 Hz, 40 A |
| Air Requirement | 80-90 PSI, 3 CFM |
| Machine Dimensions | 47 x 39 x 50 in (119 x 99 x 127 cm) |
Specifications sourced from glebar.com — verified 2026-10-05
Strengths & Limitations
Strengths
- 20 in (508 mm) work wheel and matching regulating wheel grind several components at once
- Maximum grinding length of 20 in (508 mm), against 10 in (254 mm) on the PG-9DHD
- Hard chromed slide assembly with a stated resolution of 0.1 micron
- 15 hp (11 kW) work wheel spindle at 2,400 rpm
- Built-in hoist for removing the diamond work wheel and spindle assembly
- Servo-motor driven regulating wheel side, set from a touch-screen HMI
Limitations
- Designed around soft-state ceramics and carbide; Glebar gives no roundness figure for this model
- Spindle power is 15 hp (11 kW) only, where the PG-9DHD offers 7.5 hp (5.6 kW) and 10 hp (7.5 kW) as well
- Listed weight of 1,800 lb (817 kg) is below the PG-9DHD's 2,000 lb (908 kg) despite the longer wheel, so confirm weight and footprint before planning the installation
- A 20 in (508 mm) diamond wheel is a heavy consumable that needs the hoist for every change
Best For
Frequently Asked Questions
01
Ceramic components such as unfired carbide, and the crystal quartz glass boules used to produce fibre optics. The carbide is form ground in the soft state to near net size, which removes material far more easily than grinding it after sintering.
02
It is built on the PG-9DHD base with the work wheel and regulating wheel extended to 20 in (508 mm). Maximum grinding length rises to 20 in (508 mm) from the PG-9DHD's 10 in (254 mm). Work wheel diameter, 9 in (229 mm), and the part diameter range up to 4 in (100 mm) are the same on both.
03
The work wheel is 9 in (229 mm) in diameter and 20 in (508 mm) long, driven by 15 hp (11 kW) at 2,400 rpm. The regulating wheel has a 2 hp (1.5 kW) drive with a speed range of 10-400 rpm, and its side of the machine is servo-motor driven.
04
The machine has a built-in hoist for removal of the diamond work wheel and spindle assembly. With a wheel 20 in (508 mm) long that is the practical way to handle it, and the hoist is part of the listed feature set.