General Information

Make sure that the line voltage is the same as the Grinder is marked before turning on current. The ground wire is attached to the inside of the motor case. The other end is attached to ground prong of the 3-prong plug.

Warning-Grinding Wheels and Spindle Speeds

Select proper wheel for the type of material to be ground. Lock wheel securely to spindle. Dress wheel with a diamond dresser only. Use only recommended wheels as on the label. See ANSI  B7.1 and OSHA regulations regarding safety practices. Be sure both wheel and belt guards are in place prior to starting grinder. A set of pulleys is supplied which operate the spindle at speeds which give the proper peripheral speed for the grinding wheels furnished. These pulleys are numbered and a chart on the nameplate attached to the Grinder gives the correct combination of pulleys to be used with wheels of various diameters.


Only specially selected deep groove precision ball bearings which are permanently lubricated are used. Spindle bearings are supplied with non-metallic retainers. Motor bearings have steel retainers. All ball bearings are selected for fit to both spindle and housing, which assures long life, and accurate results can be obtained with proper attention.

Universal Motor

Universal type motors will operate on either alternating or direct current, but only on voltage for which they are designed, as shown on the nameplate. The 110-volt motor will operate on AC or DC, but not on 220-volt. Universal motors will overheat rapidly if overloaded, the operator should make certain that the Grinder is not overloaded because serious and expensive damage will be the result. The motor housings are sand cast aluminum. Brushes should be inspected frequently, kept free from dirt and dust, and should operate freely in the brush holders, make sure that the brush springs have proper tension. The armature is dynamically balanced and fitted with a fan. A baffle plate inside the housing directs a constant flow of air across the armature, thus eliminating the possibility of overheating. Automatic bearing adjustment takes care of expansion and contraction. All motors are supplied with deep groove bearings and tension springs to provide for automatic adjustment.

Eccentric Tube

The spindle housing is sand cast aluminum. All bearing seats are line reamed and honed assuring proper fit and alignment. Automatic bearing adjustment takes care of expansion and contraction. The spindle assembly is supplied with flinger assembled on wheel end forming a labyrinth seal to protect against foreign matter getting into the bearing. The spindle assembly has the front bearing locked with automatic adjustment operating from the rear end. The eccentric tube provides for a manual belt adjustment which is positive and assures the proper belt tension at all times. The motor and spindle assembly remain parallel under all conditions. The belt tension will not cause a misalignment of the grinding spindle because the motor and spindle assembly is securely locked in parallel relation. There are no springs or hinges which permit side movement when the grinder is in operation, thus the possibility of vibration set up is reduced to a minimum.

To Attach Grinder to Lathe

The simple locking device has a right-hand thread. Start the clamp head screw into clamp nut, the clamp head lock pin enables the operator to easily and securely lock the Grinder to the T-slot in the compound rest of lathe. The nameplate lists correct pulley combination for proper speed of various sized wheels. Be sure that the pulleys are mounted correctly. That is the correct pulley on the motor and the correct pulley on the spindle. Line up pulleys. Attach belt and rotate spindle tube for proper belt tension. Lock spindle tube in position. Set grinding spindle center to lathe center and securely lock clamp bracket. See that all end play and looseness has been eliminated in the lathe before operating Grinder.

Lock and Operate in Any Position

The circumferentially adjustable grinding spindle can be locked and operated in any position within the range of adjustment. The locking arrangement is simple and positive.

Adaptable to Any Equipment

Mounting brackets can be utilized for vertical milling spindle or surface grinder mounting and permits positioning the grinder at any desired angle. #1065 Bracket, standard bore 2 9/16” or may be bored to specification.