Home
Up
Specials
New Products
Glass Machines
Lapidary Supplies
Information
Catalog Request
Intro to Lapidary
Intro to glass beveling
About us

Heavy Duty Grinder-Polisher

Model 400HDG
*Now with 1/2 HP Hy-torque Motor

Covington's Heavy Duty Grinder Polisher:

• Will take 10, 8 or 6" Wheels or 8" expando drum
• Option: Either end of the shaft will hold an 8" X 1" - 14 thread vertical disc-with a wheel or drum still mounted
• Versatile two-station grinder/polisher
• 1"X18" shaft with heavy-duty neoprene sealed ball bearings
• Cast aluminum pans and hoods
• 1/2 HP, 110V, Heavy Duty motor

Accessories Included:

• Flanges, nuts, drive pulley, v-belt & guard, water valves & drains
• Hoods remove easily for cleaning or wheel change
• Water valve takes 1/4" O.D. plastic tube for gravity water flow or 1/4" copper tube for pressure system
• Spray nozzles under hood wet entire wheel face
• Unit comes with instructions & guarantee
• Comes fully assembled and mounted on Lam-I-Cushion base
• Size: 25" L X 24" W X 15" H
• Shipping Weight:  76 lbs.

Model #400HDG (less wheels)

$ 660.00

Model 592HDG
*Now with 1/2 HP Hy-torque Motor
Two Station 6, 8 or 10" Vari-Speed Grinding Unit Features:

• Heavy duty ball bearings, neoprene sealed and greased for life
• Cast aluminum pans and hoods with water valves and drains
• Speed control with Variable RPM changes with no loss of torque
• 1/2 HP, 110V, Heavy Duty motor

Includes same accessories as the model #400HDG shown above.  This unit will allow operator to use different grinding speeds to achieve optimal grinding or polishing.  Works exceptionally well with expandable drums.  Unit comes fully assembled.  Size: 26" L X 26" W X 17" H  Shipping Weight:  78 lbs.

Model 592HDG (Less Wheels)

$ 785.00

8" Expando Drum Unit
With Four 8" x 3" Expanding Drums

Four Station 8" Expando Unit Features:

• Heavy duty ball bearings, neoprene sealed and greased for life
• Cast aluminum pans and hoods with water valves and drains
• Speed control with Variable RPM changes
• 1/2 HP, 110V Heavy Duty motor

The angled expansion slots through the rubber rim of the expando drum allow it to expand when rotated, thereby locking the belt in place. The drum surface flexes to gemstone contour to quickly remove grinding flats and the belts cutting action quickly removes scratches.

Accessories include four 3" x 25 7/32" sanding belts and v-belts guard. Unit comes fully assembled and mounted on base with instructions and guarantee. Size 37" L x 26" W x 14" H.  Item Ships Freight, Call or e-mail for a Quote

Model No. 594 -- 8" Expando Drum Unit

$ 1,025.50

8" Grinder-Polisher
With 8" Expando Drum

Belts can be quickly changed--just slip off the old and slide on the new!

Grinder-Polisher Features:

• Heavy duty ball bearings, neoprene sealed and greased for life
• Rust proof aluminum castings
• Adjustable cab and wheel rest
• Speed control with 8 RPM changes
• 1/3 HP, 110V, heavy duty Motor

Expando drum: angled expansion slots through rubber rim allow drum to expand when rotated, thereby locking belt in place. Drum surface flexes to gemstone contour to quickly remove grinding flats and belt's cutting action quickly removes scratches. Hood removes easily for cleaning or wheel change. Water valve takes 1/4" O.D. plastic tube for gravity water flow or 1/4" copper tube for pressure system. Spray nozzles under hood wet entire wheel face. Base-mounted grinder-polisher comes assembled with 2 8" x 1 1/2" silicon carbide grinding wheels (100 & 220 grit), 8" expando drum with 400 grit belt, and aluminum polishing buff. Sample kit includes polish powder with brush and dop sticks with wax. Units comes assembled with operating instructions and guarantee. Size 37" L x 21" W x 16" H (Motor shipped separately 13" x 9" x 9" 16 lbs). Item Ships Freight, Call or e-mail for a Quote

Model #752 -- Grinder-Polisher Silicon Carbide Unit (includes 1/2" bore Vari-drive pulley)

$ 1,175.00

The 754 unit has the same basic features as the 752 with silicon carbide replaced by diamond abrasives. Unit comes with 2 8" x 1 1/2" metal bond diamond grinding wheels (100 & 220 grit), 2 3" x 25 7/32" diamond cloth belts (220 mesh & 1200 mesh) and, for polishing on the leather disc a 2 gram syringe of 50,000 mesh diamond compound with a 2 dram bottle of extender fluid (thinner). Grinder-Polisher comes complete with sample kit, book about using diamond abrasives, instructions and guarantee (motor shipped separately).
Item Ships Freight, Call or e-mail for a Quote

Model #754 -- Grinder-Polisher Diamond Unit (includes 1/2" bore Vari-drive motor pulley)

$ 1,500.00

Covington^® Engineering Corporation
U.S. Toll Free (877)793-6636  Outside U.S. 909-793-6636  Fax 909-793-7641
Email us at sales@covington-engineering.com
715 West Colton Avenue -- P.O. Box 35 -- Redlands, CA 92373