A cylindrical grinder finishes round parts, while a surface grinder finishes flat ones. Many buyers search for "cylindrical surface grinders" when they need both. Prayosha makes both, and the hydraulic cylindrical grinding machine is the round-work partner of its surface grinder range.
The PCY 600 has a 150 mm centre height and a hydraulically operated main slide. In-feed is by an AC servo motor through a ground ball screw that is directly coupled. A Ø 60 × 250 mm internal grinding spindle running at 16,000 RPM lets the same machine grind bores. The work head speed is infinitely variable from 50 to 600 RPM through a 3-phase AC drive.
Specification
| Specification | Unit | PCY 600 |
|---|---|---|
| Machine | ||
| Centre height | mm | 150 |
| Main slide | — | Hydraulically operated |
| Internal grinding spindle | — | Ø 60 × 250 mm, 16,000 RPM |
| Work head speed | RPM | 50 – 600, infinitely variable (3-ph AC variable drive) |
| In-feed | — | AC servo motor with ground ball screw |
| Cross slide guideways | — | LM guideways |
| Minimum oscillation stroke | mm | 2 (proximity switch) |
| Lubrication | — | Automatic, main slide via flow-control valve |
| Collet clamping | — | Hydraulic jib clamp / de-clamp on request |
| Power | ||
| Wheel head | HP | 3 |
| Work head | HP | 0.5 |
| Hydraulic | HP | 1 |
| Coolant pump | HP | 0.1 |
| Total connected power | HP | 4.6 |
Features
- Hydraulic main slide driven by a reputed-make hydraulic cylinder
- AC servo in-feed with a ground ball screw and imported coupling
- LM guideways on the cross slide
- Automatic lubrication of the main slide through a flow-control valve
- Imported endless flat belt with a dynamically balanced pulley, to reduce vibration
- Built-in electrical control panel with reputed components, and full safety guards
- Hydraulic collet clamping and de-clamping available on request
Typical parts
Engine and gearbox shafts, motor armature shafts, hydraulic piston rods, pins, bushes, rollers and spindle shafts. Using the internal spindle, it also grinds bores in bushes, sleeves and gear blanks.
Also available: CNC thread grinding for threaded shafts, and the CNC turning centre for pre-machining.
Frequently asked questions
Can the PCY 600 grind both outside and inside diameters?
Yes. It has a Ø 60 × 250 mm internal grinding spindle running at 16,000 RPM, in addition to external grinding.
What is the work head speed range?
50 to 600 RPM, infinitely variable through a 3-phase AC variable drive.
What is the total power requirement?
About 4.6 HP in total: a 3 HP wheel head, 0.5 HP work head, 1 HP hydraulic motor and 0.1 HP coolant pump.
Is a cylindrical grinder the same as a surface grinder?
No. A cylindrical grinder finishes round parts between centres or in a chuck. A surface grinder finishes flat faces on a reciprocating table.
