Supreme surface grinders sit between the compact Premier and the heavy Jumbo range. Wider tables, a 550 mm spindle centre height and a 350 mm wheel at 1440 RPM make them the usual choice for die-set plates, mould bases and medium machine parts.
Supreme machines are built on the same PH platform as the rest of the hydraulic range. A hydraulic table runs on end-cushioned cylinders, cross feed is motor driven with rapid positioning, and the vertical handwheel reads in 0.002 mm steps. The PH 2040 and PH 2060 move up to a 5 HP hydraulic motor and a 150-litre tank to handle the longer, heavier strokes.
Choosing a Supreme model
- PH 1632 and PH 1640: 400 mm wide tables, 800 or 1000 mm long. Suited to die plates and mould inserts.
- PH 2040: a 500 × 1000 mm table with 550 mm cross traverse, for wider bolsters and fixture bases.
- PH 2060: a 500 × 1500 mm table with a 7.5 HP spindle, for long plates, guide rails and batches of parts.
How the axes work
Table (longitudinal)
Driven by hydraulic cylinders with end cushioning. Solenoid valves give soft, shock-free table reversals at both ends of the stroke.
Cross feed
AC induction motor and drive through a trapezoidal screw and nut, with rapid positioning and automatic cross feed of 0.5–5 mm at each table reversal.
Vertical feed
AC induction motor with a precision gearbox through a trapezoidal lead screw. The handwheel least count is 0.002 mm (2 microns), and the head has rapid up and down movement.
Supreme surface grinder specification
| Specification | Unit | PH 1632 | PH 1640 | PH 2040 | PH 2060 |
|---|---|---|---|---|---|
| Capacity | |||||
| Max. table size | mm | 400 × 800 | 400 × 1000 | 500 × 1000 | 500 × 1500 |
| Max. longitudinal travel | mm | 875 | 1075 | 1575 | |
| Max. cross traverse | mm | 450 | 550 | ||
| Max. spindle centre height above table | mm | 550 | |||
| Speeds and feeds | |||||
| Table speed | m/min | 5 – 25 | |||
| Power cross traverse | mm/min | 1000 | |||
| Auto cross feed at each table reversal (infinitely variable) | mm | 0.5 – 5 | |||
| Least count of vertical feed handwheel | mm | 0.002 | |||
| Grinding head | |||||
| Grinding wheel size | mm | 350 × 50 × 127 | |||
| Spindle motor | HP | 5 | 7.5 | ||
| Grinding spindle speed | RPM | 1440 | |||
| Hydraulic system | |||||
| Working pressure | kg/cm² | 20 | |||
| Hydraulic motor | HP | 3 | 5 | ||
| Tank capacity | L | 75 | 150 | ||
Features
- Hydraulic semi-automatic operation on a horizontal-spindle, reciprocating-table layout
- Column-moving design that keeps the table and work stable while the wheel head travels
- Hydraulic X-axis with end cushioning and soft table reversal through solenoid valves
- Vertical feed handwheel with a least count of 0.002 mm (2 microns)
- Spindle runs on imported super-precision bearings, grease-packed for life
- Rapid positioning on the X and Y axes, plus rapid up and down travel on the vertical axis
- Machines tested as per IS 2743 and ISO standards, according to the manufacturer
Applications
- Die-set and press-tool plates, stripper and punch-holder plates
- Plastic-mould bases and cavity plates
- Machine beds, gibs, slides and spacers of medium length
- Production grinding of batches of flat components held on a magnetic chuck
Need CNC control on a Supreme-size table? See the CNC Supreme profile surface grinder.
Frequently asked questions
Which Supreme model should I choose?
Pick the model by your largest regular job. The PH 1632 and PH 1640 take 400 mm wide work. The PH 2040 and PH 2060 take 500 mm wide work, and the PH 2060 also takes lengths up to 1500 mm.
What grinding wheel does the Supreme series use?
All Supreme models use a 350 × 50 × 127 mm wheel running at 1440 RPM.
Are Supreme surface grinders available for export?
Yes. Prayosha supplies machines in India and abroad. See the surface grinding machine exporter page for documentation and shipping.
Can the Supreme be supplied with special table sizes?
Prayosha states that it builds machines to specific size, capacity and production requirements. Share your component drawing so the team can confirm.
