Obtain fine flatness and surface finish

ADVANTAGES:

• A wide variety of materials can be lapped
• Flatness to one light band (0.0003 mm) on 100 dia
• Surface finish to less than 0.2 µRA

The advantages of lapping for obtaining fine flatness and surface finish have long been recognised by production and design engineers. Proper finish and flatness can be achieved with any of the seven standard lapping machines in the GMT range, in bench and floor models.

SOME REASONS WHY LAPPING MAACHINES HELP TO TRANSFORM A COSTLY, RARELY USED HAND OPERATION INTO AN ECONOMICAL PROCESS:-

• Parts of different shapes, thicknesses and materials can be lapped.
• Because the lap plate continuously maintains its flatness, production is not interrupted.
• Appropriate diameters of the conditioning rings result in optimum lapping area.
• An automatic and adjustable digital timer controls lapping cycles.

A partial list of the materials that lend themselves to lapping: Cast iron, Tungsten, Plastics, Ceramics, Stainless Steel, Alumina, Silicon, Bronze, Stellite, Carbon, Ferrite and Aluminium. Pump manufacturers, electronic industries, valve manufacturers, etc.,

REVERSE MECHANISM

A reverse mechanism is used to correct the flatness of the lap plate and avoid downtime for lap plate correction.

MODELS 300mm and 400mm dia

300mm and 400mm dia lapping machines are bench models and are robust. The lap plate and conditioning rings are made from special, close-grained cast iron. The lap plate is supported on a preloaded taper roller bearing for maximum stability.

STANDARD EQUIPMENT FOR MODELS 300mm and 400mm dia

• Heavy-duty steel fabricated housing.
• Abrasive distribution system with pump, tank and infinitely variable flow control.
• Cast alloy lap plate, radially serrated.
• Three adjustable conditioning rings with yoke and bearing assemblies.
• Automatic lapping cycle timer.
• Drive unit, 0.37 kW motor with gearbox.
• Reverse mechanism.
• Three pressure plates with lifting eye bolts.
• Three felt pads.
• Optional Equipment
• Variable speed drive.
• Special lap plate for lapping tungsten carbide, ceramics, etc
• A handy machine cabinet which for storage for all accessories

LAPPING MACHIINES, MODELS 610, 900 & 1200 dia.

These sizes are constructed on a solid fabricated structure and heavily ribbed. Special attention has been given to the design of the main spindle bearings, giving great axial load capacity, maximum stability, long life and smooth performance even under heavy eccentric loading. Lap plates are manufactured from close-grained alloy cast iron, stress relieved after pre-machining and finally finish-machined and lapped in position.

STANDARD EQUIPMENT FOR MODELS 610, 900 & 1200 dia.

• Heavy-duty structural steel with integrally mounted drive motor, gear reduction unit.
• Abrasive pump, abrasive pump, abrasive distribution system, complete with electrical control panel.
• Heavy-duty work table, manually adjustable vertically.
• Alloy cast iron serrated lap plate.
• Three adjustable conditioning rings with roller yoke assemblies.
• Three felt pads.
• Reverse mechanism.
• Adjustable timer, tank, feeding systems with adjustable flow control.
• Removable drain container.
• Main drive motor with gear reduction unit.
• Three cast-alloy pressure plates with eye bolts.
• Wrenches, instructional manual.
• Stirrer motor.
• Optional Equipment
• Heavy-duty, double acting, pneumatic cylinders, radially adjustable, mounted on a steel spider assembly.
• Variable speed drive.
• Special porous-structure lap plate for lapping tungsten carbide material.
• Provision for water cooling.
• Abrasive Tank

A pump feeds the slurry to the lap plate through an infinitely adjustable control jet that closely regulates the required flow onto the lapping tungsten carbide.