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GPTEC ‘ESG’ SERIES HELICAL GEAR BOXES WITH BUILT IN THRUST BEARINGS FOR PLASTIC EXTRUDER & OTHER MACHINERIES.

The ‘ESG’ range of helical reduction units includes a new generation of designed components.
This reduction unit give :

Wide modular construction of all parts

Optimization of gear geometry to afford higher performances & reliability

To overcome separate alignment of Electric motor, Worm reducer, Thrust bearing housing & coupling is eliminated in the ‘ESG’ range of helical reduction unit which is the modern development in the plastic industries in the field of blow molding & extruders.

This unique features give added advantage over worm reducer, thrust bearing housing & coupling, as follows :

As the shank of the screw is directly fitted into the hollow shaft of the ‘ESG’ Helical reduction unit gives maximum accuracy in alignmentd.

Better efficiency as helical reduction units are having higher efficiency compared to worm reducerr.

Extruder machine can be installed in smaller place.

Cost savings.

Electricity power consumption is reduced by 40% to 50%.

Less assembly time is required & hence quick service to customers


Extruder Gear Box for Rubbber, Plastic & Food Extruder Machine

DESIGN FEATURES :

All the graded cast iron casting with its special shape has been designed differently compared to the more traditional forms of helical reduction units. It is duly ribbed in order to give the utmost Torsion stiffness. The casing developed for this range of reduction units, together with the latest technology, high quality of materials, most advanced machinery processes, particularly the bearing seats which are machined in a single operation ensure excellent accuracy, rigidity & reliability. The special design offers the advantage of favorable power to weight ratio & increased thermal productivity thereby ensuring optimum performance, even when the reduction units reaches temperatures of 85 – 90 deg.c .at maximum capacity.

GEARS :

In high quality case – hardening steel to ensure very high bending stress resistance & long life. Normally in 20 MNCR 5 & EN – 36. Gears are hobbed on precision hobbing machine & duly Lapped to ensure maximum accuracy.

GEARING CAPACITY :

The gearing capacity is calculated under a series of thorough test, taking into account the varying Loads during long operations.

THE FOLLOWING CONDITIONS HAVE BEEN TESTED :

Max. tooth strength.

Max. wear unit.

Max. temperature allowable without forced cooling.

Max. lubrication limit for gearing under fluid friction conditions.

BEARING :

Spherical & cylindrical roller bearings are used to carry considerable thrust & radial loads & spherical roller thrust bearing is used to carry full thrust load from the screen of an extruder machine.

LUBRICATION & COLLING :

This range of reduction units are usually provided with splash lubrication. Special use conditions Could call for an increase of cooling capacity by means of a cooling coil. This range of reduction Units are usually provided with splash lubrication. Special use conditions could call for an increase Of cooling capacity by means of a cooling coil.

RECOMMENDED LUBRICANTS :

MANUFACTURER’S NAME
MANUFACTURER’S REFERENCE
Indian Oil Co., Bharat Petroleum, Caltex (I) Ltd.
Servo – mesh 320, Amocom – 320, Morepa – 5.

OIL SEALS :

Silicon based oil seals are used which can withstand upto a temperature rise of 200 Deg. C.

INSTALLATIONS :

For perfect reduction unit operation the following installations must be adhered to :

When assembling the reduction unit to a base plate, make sure that possible vibrations are avoided.

Make sure that the reduction unit & extruder machine shafts are always in alignment, we Recommend connections with self – alignment couplingst.

Components such as pulley, sprocket, couplings fitted to the input shaft of the reduction unit, Must have an ‘ISO’ 47 bore tolerance & key ways must be in perfect contact. When assembling Components, heavy hammer blowers must be avoided in order to avoided bearing & other internal damage.

Oil seals must never be painted because this would cause lubricant leakage.

MAINTENANCE :

Topping up different (mixed) lubricants must be avoided as this would inhibit the lubricating effect& cause serious damage to all internal components. The reduction units will be supplied without oillubrication & it will be necessary to charge the unit with the correct quantity of oil, before puttinginto operation, with the aid of filler, drain & oil level plugs. When an internal overhaul is carried out,it will be necessary to place the lubricant.. For mineral oil lubrication proceed as follows :

Replace the oil after the first 200 operation hours, clean the inside thoroughly, re-charge with The correct quantity of new oil.

Check the oil level periodically & replace the lubricant after approximately 2500 operating hours.