Surface Grinding Machine

CORMAK SGA 40100AHD

Surface Grinding Machine 400 × 1000

The 400 × 1000 surface grinding machine is an advanced solution designed for high-precision flat surface grinding in the machine-building industry. Equipped with automatic feeds on all three axes and a digital readout system, it ensures excellent machining accuracy while maintaining a rigid and robust construction.
A key advantage of this magnetic surface grinder is its ability to handle heavy loads up to 600 kg, making it a reliable choice for demanding production applications.

Construction and Performance

The machine is built on a heavy-duty bed construction that provides high rigidity and effectively minimizes vibrations during operation.
The spindle runs at 1450 rpm and is mounted on precision bearings, ensuring stable operation of the grinding wheel with dimensions 350 × 40 × 127 mm.

The hydraulic system controls the longitudinal table movement within a speed range of 7–23 m/min, while automatic cross and vertical feeds enable precise motion control.
The 406 × 1020 mm working table, equipped with an electromagnetic chuck, facilitates secure workpiece clamping and enhances operational safety.

An integrated coolant system with a 0.14 kW pump efficiently dissipates heat, preventing thermal distortion and ensuring dimensional stability.

Precision and Productivity

Precision is achieved through advanced feed mechanisms and accurate control systems.
The automatic intermittent cross feed (0.1–8 mm) and vertical feed increments down to 0.005 mm allow machining tolerances below 0.01 mm, which is essential for components with high dimensional requirements.

Productivity is further enhanced by a maximum table travel of 450 × 1130 mm and a cross feed speed of up to 990 mm/min, enabling efficient machining of large surfaces without compromising accuracy.

The grinding wheel operates at an optimized speed, ensuring uniform material removal, reduced wheel wear, and a surface finish of Ra below 0.2 μm.
The three-axis digital readout system eliminates manual positioning errors, shortens setup time, and increases throughput in production cycles.

Technical Data

Working table size:
406 × 1020 mm

Maximum table travel:
450 × 1130 mm

Table T-slots:
14 × 3 mm

Longitudinal table speed:
7–23 m/min

Maximum distance from table surface to spindle center:
570 (460) mm

Maximum load capacity (including chuck):
600 kg

Automatic intermittent cross feed:
0.1–8 mm

Rapid cross feed:
990 mm/min

Handwheel feed (cross):
0.02 mm (0.001") per graduation
5 mm (0.2") per revolution

Grinding wheel dimensions:
350 × 40 × 127 mm

Grinding wheel speed:
1450 rpm

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Automatic vertical feed:
0.005 / 0.01 / 0.02 / 0.03 / 0.04 / 0.05 mm

Rapid vertical feed:
480 mm/min

Handwheel feed (vertical):
0.005 mm (0.0002") per graduation
1 mm (0.04") per revolution

Spindle motor power:
5.5 kW

Hydraulic oil pump motor:
2.2 kW

Coolant pump motor:
0.14 kW

Vertical drive motor:
1 kW

Cross feed drive motor:
0.04 kW

Machine weight:
4000 kg

Machine dimensions (L × W × H):
3300 × 2400 × 2000 mm

Standard Equipment

3-axis digital readout

Electromagnetic table 406 × 1020 mm

Grinding wheel

Grinding wheel balancing arbor

Grinding wheel flange

Tool kit

24V machine lighting

Coolant system