GEMMASTA GMP8 No.3 without Wheels

2 Wheel Grinder with 2 Medium Guards

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GEMMASTA GMP8 No.3 without Wheels


This machine is supplied with the following:

Cast Aluminium centre housing

2 x  Cast Aluminium 95mm wide Wheel Guards - Please Note: If you elect to run 2 x 75mm wide Expandable Drums there is not enough room under the guards to run polishing buffs or face plates as well.

1 x 385mm long x 25.40mm stainless steel shaft. Shaft is tapped with 1/4 inch female threads on both ends.

2 x Overhead Taps and associated tubing supplying water to the wheels.

1 x Brass Hose Connector to allow water to be connected to the machine by a standard hose connection fitting.

1 x 3 Speed Pulley Set (Speeds are 850, 1420 and 1988 rpm)

1 x 1/3hp Electric Motor

1 x Stainless Steel Tray with Pinchweld edge protection in the front and sides.

1 x 25mm Drain Assembly (Associated drain tube is not supplied)

Supplied with base board, motor, and water system as shown. Baseboard measures 580mm wide x 600mm deep)

Please ask for a quote for a customised fit out of this machine.

Originally designed and built by Roy Gaerth in Adelaide in 1972, these heavy duty lapidary grinders have long been the machine of choice for many people in the Australian Opal Industry, and in Gem and Lapidary Clubs right around Australia. Roy eventually sold the manufacturing rights to Gemmasta Lapidary Equipment in Flinders Park, South Australia and it was later aquired by Shell-Lap in Adelaide. In 2018 Shell-Lap closed when the owner retired and the manufacturing moved to Ballina in NSW.

Since then the machine has undergone several design improvements to make it even better than the original.

The Gemmasta GMP8-3 now comes with a full stainless steel tray that replaces the galvinised steel tray that was previously supplied with this model. The bearings have been replaced with fully sealed units.

The 3/4 Inch shaft has been updated to a full 1 inch stainess steel shaft. This provides additional rigidity and greater support, particularly those users that want to run heavy sintered grinding wheels.

The 1 inch shaft also means that lapidary wheels used on this machine do not reqire bushing and are less prone to vibration.

This is a machine that is built to last, made of solid cast aluminium components with a lifetime warranty against manufacturing faults.



Brand Gemmasta
Shipping Weight 44.0000kg
Shipping Width 0.700m
Shipping Height 0.400m
Shipping Length 0.680m
Shipping Cubic 0.190400000m3
Unit Of Measure ea

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