Pedestal Grinders and Other Off-Hand Grinders

Shop Tools and Techniques Grinding Grinding is the process of removing material by the cutting action of individual hard and sharp abrasive grains or particles of a revolving wheel as they come in contact with the surface to be ground. Shop Tools and Techniques

Shop Tools and Techniques Grinding Wheels Abrasive Particles that are held together by a glue-like material called the bond. Shop Tools and Techniques

Shop Tools and Techniques Grinding Wheels Abrasives either Natural Occurring or Synthetic Natural Emery Corundum Flint Garnet Quartz Diamond Shop Tools and Techniques

Shop Tools and Techniques Grinding Wheels Synthetic Aluminum Oxide Silicon Carbide Zirconia-Aluminum Oxide Boron Carbide Ceramic Aluminum Oxide Cubic Boron Nitride Diamond Shop Tools and Techniques

Shop Tools and Techniques Grinding Wheels Natural verses Synthetic Synthetic Has replaced most naturally occurring abrasives Superior Hardness Durability Controlled Grain size Controlled Purity Controlled Shape Shop Tools and Techniques

Shop Tools and Techniques Grain Size Grain Size determines the coarseness or fineness of the grinding wheel Ranges from 6 (very coarse) to 240 (very fine) Coarse Wheel Fine Wheel Shop Tools and Techniques

Shop Tools and Techniques Bond Types Vitrified Bond Most common (Clay or Feldspar) Resinoid Bond Synthetic resins Rubber Bond Flexible Bond Metal Bond Electrically conductive wheels Shop Tools and Techniques

Shop Tools and Techniques Grinding Wheel Grade The degree of strength that a bond holds the abrasive grains in the bond setting. Grade A Softest Grade Z Hardest Shop Tools and Techniques

Shop Tools and Techniques Grinding Wheel Grade The degree of strength that a bond holds the abrasive grains in the bond setting. Hardness of Material Hard Material – Soft Wheel Area of Contact Large Contact – Soft Wheel Speed of Wheel Higher Speed – Softer Wheel Shop Tools and Techniques

Shop Tools and Techniques Grinding Wheel Grade The degree of strength that a bond holds the abrasive grains in the bond setting. Machine Condition Rigid Machine – Soft Wheel Rate of Feed High Rates – Hard Wheel Operator Characteristics Ram Rod – Hard Wheel Shop Tools and Techniques

Grinding Wheel Structure The structure of the grinding wheel is the space relationship of the grains and the bonding material to the voids that separate them. Structure 0 Small Spacing Structure 12 Larger Spacing Shop Tools and Techniques

Grinding Wheel Structure Grinding Wheels are fitted with paper blotters that act as cushions between the wheel and flanges holding them on. Shop Tools and Techniques

Grinding Wheel Features Abrasive Type Aluminum Oxide, Silicon Carbide, CBN, Diamond Grain Size 8 coarse to 240 very fine Grade A – Soft to Z – Hard Structure 0 – Close to 12 - Open Shop Tools and Techniques

Grinding Wheel Features Bond Type V – Vitrified S – Silicate B – Resinoid R – Rubber E – Shellac M – Metal Diameter Width Bushing Size Shape Shop Tools and Techniques

Grinding Wheel Manufacture The methods used in the manufacturing of specific grinding wheels are dependent upon the individual abrasive grain, the bond to be utilized and the particular application that the abrasive will be used for. Shop Tools and Techniques

Shop Tools and Techniques Pedestal Grinder The grinding wheels are mounted on a double-ended spindle and are held in place between two flanged disks Typically, a roughing or coarse grained wheel is usually mounted on one end of the spindle and a fine wheel on the other. A tool rest is provided for each wheel so that tools may be held or steadied while being ground . • Shop Tools and Techniques

Shop Tools and Techniques Pedestal Grinder Shop Tools and Techniques

Shop Tools and Techniques Pedestal Grinder Shop Tools and Techniques

Shop Tools and Techniques Pedestal Grinder Shop Tools and Techniques

Shop Tools and Techniques Pedestal Grinders Shop Tools and Techniques

Pedestal Grinder Bases Shop Tools and Techniques

Pedestal Grinder Accessories Rear exhausted dust collection unit Shop Tools and Techniques

Pedestal Grinder Accessories Quench Bath Cup Shop Tools and Techniques

Pedestal Grinder Accessories Wheel Guard Shop Tools and Techniques

Pedestal Grinder Accessories Why you need a Wheel Guard Shop Tools and Techniques

Pedestal Grinder Accessories Spark Guard Shop Tools and Techniques

Pedestal Grinder Accessories A tool rest is provided for each wheel so that tools may be held or steadied while being ground Shop Tools and Techniques

Pedestal Grinder Accessories Eye Shield and Work Light Shop Tools and Techniques

Pedestal Grinder Accessories Dressing Tools Shop Tools and Techniques

Pedestal Grinder Accessories Tool set for removing and mounting guards, rests, and etc. Shop Tools and Techniques

Pedestal Grinder Accessories Spindle nut wrench Shop Tools and Techniques

Pedestal Grinder Accessories Spark guard and tool rest setting gage Shop Tools and Techniques

Pedestal Grinder Accessories Lockout lock and tag Shop Tools and Techniques

Pedestal Grinder Accessories Lockout hasps Shop Tools and Techniques

Shop Tools and Techniques Dismounting A Wheel 1. Turn off grinder 2. Lock-out and Tag-out grinder 3. Disconnect exhaust collector 4. Loosen and relocate Eye shield 5. Loosen and relocate tool rest 6. Loosen and relocate spark guard Shop Tools and Techniques

Shop Tools and Techniques Dismounting A Wheel 7. Remove wheel guard 8. Loosen wheel mounting nut Right hand threads on right side Left hand threads on left side 9. Remove Wheel 10. Inspect wheel for damage Discard damaged wheel Shop Tools and Techniques

Shop Tools and Techniques Turn Off Grinder Shop Tools and Techniques

Shop Tools and Techniques Lock-out And Tag-out Shop Tools and Techniques

Disconnect Exhaust Collector Shop Tools and Techniques

Loosen And Relocate Eye Shield Shop Tools and Techniques

Loosen And Relocate Tool Rest Shop Tools and Techniques

Loosen And Relocate Spark Guard Shop Tools and Techniques

Shop Tools and Techniques Remove Wheel Guard Shop Tools and Techniques

Loosen Wheel Mounting Nut Shop Tools and Techniques

Shop Tools and Techniques Remove Wheel Shop Tools and Techniques

Inspect Wheel For Damage Shop Tools and Techniques

Shop Tools and Techniques Mounting a Wheel 1. Clean Spindle shaft 2. Replace inner washer 3. Ring test wheel to mount 4. Install wheel on spindle 5. Replace outer washer 6. Tighten wheel mounting nut 7. Rotate wheel manually and observe Shop Tools and Techniques

Shop Tools and Techniques Mounting a Wheel 8. Replace wheel guard 9. Reconnect exhaust collector 10. Relocate and tighten tool rest 11. Relocate and tighten spark guard 12. Remove Tag and Lock 13. Stand to side and restart grinder 14. Dress wheel Shop Tools and Techniques

Shop Tools and Techniques Clean Spindle Shaft Shop Tools and Techniques

Shop Tools and Techniques Ring Test Wheel Shop Tools and Techniques

Shop Tools and Techniques Replace Inner Washer Shop Tools and Techniques

Shop Tools and Techniques Install Wheel Shop Tools and Techniques

Shop Tools and Techniques Replace Outer Washer Shop Tools and Techniques

Tighten Wheel Mounting Nut DO NOT Over-tighten Nut!! Shop Tools and Techniques

Shop Tools and Techniques Rotate Wheel Manually Shop Tools and Techniques

DO NOT Over-tighten Nuts!! Replace Wheel Guard DO NOT Over-tighten Nuts!! Shop Tools and Techniques

Reconnect Exhaust Collector Shop Tools and Techniques

Relocate And Tighten Tool Rest DO NOT Over-tighten Nuts!! Shop Tools and Techniques

Relocate And Tighten Spark Guard DO NOT Over-tighten Nuts!! Shop Tools and Techniques

Shop Tools and Techniques Remove Tag and Lock Shop Tools and Techniques

Stand To Side And Restart Grinder Shop Tools and Techniques

Shop Tools and Techniques Dress Wheel Shop Tools and Techniques

Shop Tools and Techniques Other Grinders Shop Tools and Techniques

Shop Tools and Techniques Other Machines Shop Tools and Techniques

Shop Tools and Techniques The End!! Shop Tools and Techniques

Shop Tools and Techniques

Shop Tools and Techniques