PRAGA HOSTIVAR a.s.
CREATE NEW HORIZON 

Production Potential - Basic Division

Rotating Parts

Machining of Steel Rotary Parts

• turning
• drilling
• surface milling, milling of profiles and gearing
• surface grinding, grinding of holes, profiles and gearing

Box (case) Parts

Machining of box (case) parts from Al alloys to dimensions 1200x900x800 mm

• milling
• drilling

Separation of Material

• shearing of sheets
• cutting of bars
• profile plasma burning

Surface Finishing and Heat Treatment

• Carburizing and Hardening
• Surface Treatment

Technological Potential of Machine Workplaces

We are able to ensure the above mentioned works in following range of parameters and technological possibilities

Rotating Parts

Turning of Parts

• Turning of parts of flange and shaft type
• To diameter 320 mm in length to 1500 mm (shafts between centres to length of 1300 mm) on CNC machines
• To diameter 800 mm in length to 700 mm vertical NC

Gear cutting - to diameter 400 mm in length to 250 mm - to m10

Gear slotting - to diameter 500 mm in length to 110 mm to m5,5

Broaching of profiles - to diameter 130 mm

Gear grinding - production of spur gearing with module from 1 mm to 10 mm, with diameters to 600 mm in length to 160 mm and weight to 200 kg with longitudinal and cross involute modification. We are able to machine the gearing with hobbing milling cutter or with shaping. This gearing could be shaving, too

We can do broaching - internal gearing ( resp. slotting) on horizontal machine with force of 10 tons.

Profile Grinding - to diameter 100 mm in length to 800 mm

Surface grinding - to diameter 300 mm in length to 1000 mm

Grinding of Holes - to diameter 300 mm in length to 100 mm

Grinding of Surface - to 250 x 250 x 800 mm

Measurement of Accuracy - we measure geometrical accuracy of gearing on device PNC 65 CNC of firm KLINGELNBERG.

Further, we create project and engineering documentation, including strength analyses for spur and bevel gearings.

Box (case) Parts

Machining of hole's surface

• to 1200 x 900 x 800 mm(H7)
• to diameter 500 mm (H12)

Measurement of accuracy - 3 D coordinate measuring device MERLIN 1100
(could be used also for external measurement of parts to dimensions 1100 mm x 1100 mm x 750 mm)

Separation of Material

• shearing of sheets on drop shears to thickness of 6 mm
• cutting of bar material on band saw to diameter about 250 mm
• plasma burning to thickness 25 mm

Crack Detection

- incaring (detection)

Technological Potential of Heat Treatment

Bell nitriding furnace

- nitriding in gas, max. weight about 300 kg, max. length of 600 mm

Multi-purpose set of furnaces IPSEN

• Surface treatment, hardening, tempering, carburizing and various types of annealing up to size of charge 790x460x440 mm, max. weight 180 kg
• High-frequency hardening of parts to diameter from 5 mm to diameter of 120 mm, length 1000 mm and max. weight of 70 kg