PONAR KOWARY NUA 25 tool grinding machine

PONAR KOWARY NUA 25 tool grinding machine was built by the Polish company PONAR KOWARY (LAKFAM) in 1984. A machine characterised by a robust construction of high stability, is used in tool shops and workshops for precision grinding of tools and tooling. Grinding of workpieces is performed on a table with a surface area (L x W) of 915 x 135 mm with two handwheels for manual longitudinal movement (X axis) and transverse movement (Z axis) of the work table. The reliable grinding wheel spindle moving at 3850 and 5635 rpm guarantees rapid and precise machining. The total weight of the machine is 910 kg.

The machine is offered with the extensive range of equipment shown in the attached photos, which includes:
– driven divider to the instrument along the screw line
– angle vice 2 pcs.
– moving tailstock: 2 pcs.
– 3-jaw chuck fi 160 + spanner
– workpiece centre positioning tool
– fixed magnet
– screw line tool
– booster cradle
– check roller
– prisms: 2 pcs.
– grinding wheels: 12 pcs.

Technical specifications of the PONAR KOWARY NUA 25 grinding machine

• work table surface (L x W): 915 x 135 mm
• table feed in X axis (longitudinal movement): 410 mm
• table feed in Z-axis (transverse movement): 205 mm
• worktable swivel angle: ± 45°
• largest distance between tailstock tusks: 685 mm
• largest distance between tusks of handle head and tailstock head: 465 mm
• tusks elevation above worktable surface: 125 mm
• largest distance between worktable surface and axis of grinding wheel spindle: 310 mm
• grinding wheel spindle rotational speed: 3850, 5635 rpm
• vertical swivel angle of grinding wheel spindle: ± 15°, 90°
• horizontal swivel angle of grinding wheel spindle: 340°
• grinding wheel spindle motor power: 0.55 kW
• DTR – Technical and Operational Documentation
• power supply: 3x 380 V; 50 Hz
• dimensions (L x W x H): 1325 x 1240 x 1250 mm
• weight of machine NUA 25: 910 kg

The tool grinding machine has undergone an overhaul valued at approx. 3000 PLN, during which textolite baskets, large rollers with a diameter of 24×24 mm and small rollers 17×17 mm in longitudinal feed of the worktable were replaced with new ones.