Palmary PCB-6020GF-4
Image: palmary.com, Palmary
Key Specifications
grinding diameter range
wheel size
wheel peripheral speed
grinding wheel dressing device
regulating wheel size
regulating wheel speed
How much does the Palmary PCB-6020GF-4 cost?
Price estimate
We do not have a price for the Palmary PCB-6020GF-4 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 Palmary PCB-6020GF-4 is a 4-axis CNC centerless grinder built for long bar. Its distinguishing feature is a two-slide layout: the grinding wheel and the regulating wheel each feed on their own slide, and the work rest is fixed to the machine. The standard range is Ø2 to Ø100 mm.
On a conventional centerless grinder the work rest rides with the regulating wheel slide. Fixing it, Palmary says, gives better grinding accuracy through stability, and it keeps the bar on one line however the wheels wear, which is what infeed and outfeed supports for long stock need. The grinding wheel slide is a square slide with ball screw and reducer, with a linear scale optional; the regulating wheel slide is a dovetail with ball screw and reducer.
Power is the other headline. The grinding wheel motor is 40 HP (29.8 kW) at 2,000 rpm, of IE4 efficiency class, far above anything on the three-axis PCB-6020-3, and it drives a Ø610 mm by 205 mm wheel at 45 m/s (8,858 ft/min). The regulating wheel is Ø330 mm by 205 mm on a 3 kW (4.0 hp) servo.
Unlike most PCB models this one has a fully enclosed splash guard among its standard accessories. A FANUC CNC controller is standard as well. Palmary notes that the double-side slides allow an infeed grinding device or a high speed loading and unloading attachment to be fitted. Weight is 6,500 kg (14,330 lb).
Full Specifications
| Parameter | Value |
|---|---|
| Grinding Diameter Range | Ø2~Ø100 mm (OPT. Ø70~Ø150 mm) |
| Wheel Size | Ø610 x 205 x Ø304.8 mm (24.0 x 8.1 x 12.0 in) |
| Wheel Peripheral Speed | 45 m/s (8,858 ft/min) |
| Grinding Wheel Dressing Device | Single-point dressing device / (opt.) Diamond roller dressing device |
| Regulating Wheel Size | Ø330 x 205 x Ø152.4 mm (13.0 x 8.1 x 6.0 in) |
| Regulating Wheel Speed | 10-200 rpm (variable speed) |
| Regulating Wheel Tilt Angle | ±5° |
| Regulating Wheel Swivel Angle | ±0.5° |
| Regulating Wheel Dresser Swivel Angle | ±5° |
| Regulating Wheel Dresser Offset | 0~15 mm |
| Grinding Wheel Slide | Square slide, Ball screw + reducer + linear scale (opt.) |
| Regulating Wheel Slide | Dovetail slide, Ball screw + reducer |
| Grinding Wheel Motor | 40 HP / 2,000 rpm (29.8 kW) IE4 |
| Regulating Wheel Motor | 3 kW (4.0 hp) servo motor |
| Grinding Wheel Spindle Lubrication | Oil mist type |
| Regulating Wheel Spindle Lubrication | Oil grease type |
| Slide Lubrication | Auto lubricator (LUBE) |
| CNC Control | FANUC |
| Coolant Tank | 125 L (33.0 gal) |
| Wheel Spindle Lubrication Tank | 1.0 L (0.3 gal) |
| Slide Lubrication Tank | 4 L (1.1 gal) |
| Machine Weight | 6,500 kg (14,330 lb) |
Specifications sourced from palmary.com — verified 2026-10-05
Strengths & Limitations
Strengths
- Two-slide design with a fixed work rest for long bar grinding
- 40 HP (29.8 kW) grinding wheel motor of IE4 class
- Fully enclosed splash guard is a standard accessory
- Standard range up to Ø100 mm, with Ø70 to Ø150 mm optional
Limitations
- Linear scale on the grinding wheel slide is optional
- Wheel width of 205 mm; the 255 mm wheel is the PCB-6025GF-4
- Regulating wheel slide is a dovetail, not a square slide
- 6,500 kg (14,330 lb) plus bar handling equipment to accommodate
Best For
Frequently Asked Questions
01
Both the grinding wheel unit and the regulating wheel unit move on their own slides, while the work rest is fixed in the machine. Palmary says this suits long bar outer diameter grinding and improves accuracy through the stability of the fixed rest.
02
The grinding wheel motor is listed as 40 HP at 2,000 rpm (29.8 kW), IE4. The regulating wheel has a 3 kW (4.0 hp) servo motor and a speed range of 10 to 200 rpm.
03
Ø2 to Ø100 mm as standard, with Ø70 to Ø150 mm as an option. The grinding wheel is Ø610 x 205 mm and the regulating wheel Ø330 x 205 mm. Wheel speed is 45 m/s (8,858 ft/min).
04
The PCB-6020-3 is a 3-axis machine with a standard range of Ø2 to Ø80 mm, weighing 5,800 kg (12,787 lb). The PCB-6020GF-4 is a 4-axis, two-slide machine with a fixed work rest, a range to Ø100 mm and a weight of 6,500 kg (14,330 lb).
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