Motor and base
The central motor turns both arbor ends; bolt the cast base to a stable bench before use.
Power Tools / Powered Sharpening Systems / Field guide
Benchtop Bench Grinder
Shape an edge on a securely guarded wheel with light passes, a close tool rest and heat awareness.
8 × 1 inWheel1,750 RPMSpeed
01 / Tool anatomy
See the assembled tool and its components
An original educational poster identifies 9 documented construction features. The numbered descriptions remain readable below the artwork on narrow screens.
- Eye-shield assembly
Clear shields on adjustable mounting rods block ordinary wheel debris.
- Spark deflector
Adjusts above the wheel behind its transparent shield.
- Outer wheel guard
Removable cover encloses the outboard side of each wheel.
- Abrasive wheel
The two 8-inch wheels are 60 and 120 grit on this reference model.
- Flanges and nut
Clamp the wheel on the arbor; left and right nuts have different hands.
- Inner wheel guard
Fixed guard surrounds the inboard side of the wheel.
- Adjustable tool rest
Supports a controlled edge position near the wheel; secure both knobs.
- Motor and spindle
Central enclosed motor turns both horizontal arbor ends.
- Base and switch
Bolted base supports the machine; front switch controls motor power.
Technical references: RIKON 80-805 product and specifications · RIKON 80-805 M5 operator manual, pages 10 and 16-17. Each abrasive wheel mounts on a motor arbor between flanges behind an outer guard cover. Adjustable rests and clear eye shields are separate mounted assemblies. The study shows documented groups spaced for teaching, not a required wheel-changing order. Original educational artwork depicts documented component groups and their relationships; it is not a service sequence or a replacement for the exact model manual.
02 / Understand the tool
What it is and what each part does
RIKON's 80-805 is a 1/2-horsepower, 1,750-rpm grinder supplied with 8-by-1-inch 60- and 120-grit wheels on 5/8-inch arbors. Its guarded double-ended layout, adjustable rests and shields suit bevel repair and shaping. Final fine honing usually happens on a separate stone or strop. The original rendering follows the manual's wheel and guard arrangement without copying its branding.
The enclosed motor turns a horizontal spindle out of both sides. A wheel is clamped between inner and outer flanges with the side-specific retaining nut, inside fixed and removable guard halves. A tool rest supports the edge close to each wheel; a spark deflector and clear shield sit above. The exploded study separates only these documented groups for anatomy, not a wheel-change sequence.
Wheels, flanges and nuts
Two specified 8-inch wheels mount between flanges; left and right retaining threads differ. Match wheel speed rating and fit.
Inner and outer guards
Guard halves surround each wheel and must be fitted before operation.
Rests, arrestors and shields
Set these per the exact manual and inspect their clearance as a wheel wears.
01 / Working relationship
How the main groups connect
02 / Working setup
Use the guarded wheel face and close rest
02 / Working principle
Set, guide and control the action
These decisions make the mechanism useful at the bench.
Inspect before power
Use the manual's wheel inspection and mounting method; check guards, rests, shields and clearance with the plug out.
Support the edge
Hold suitable work on the tool rest and use light, controlled contact on the wheel face, never an unsupported side grind.
Control heat
Move the edge across the wheel and pause or cool as appropriate to avoid temper damage.
Repair a chipped chisel
Remove only enough metal to re-form the bevel; finish the edge on stones or another honing system.
Shape a turning tool
Use a suitable rest or approved jig to maintain profile and avoid overheating.
Refresh a scraper blank
Grind square with light contact, then hone and burnish by the scraper method.
03 / At the bench
Setup, technique and finish quality
Use the steps for a first pass, then inspect the work before changing the setup.
- Bolt the grinder securely; unplug to check wheel condition, guard coverage and clearances.
- Confirm each wheel's size, arbor fit and speed rating against the manual.
- Adjust rests and spark deflectors to the maker's specified gaps and tighten them.
- Stand aside at startup until the wheel reaches full speed; stop if it vibrates.
- Present supported work lightly to the correct wheel face and sweep across it evenly.
- Pause to check heat and geometry, then switch off and wait for complete stop before adjustment.
Guard gaps change
Wheel wear increases distance to rest and spark arrestor; reset clearances as the manual specifies.
Flanges distribute load
Correct flange and blotter arrangements support the wheel. Never improvise washers or arbor adapters.
Grinding is not honing
A wheel establishes shape and removes damage; a finer edge generally needs further sharpening.
What changes by model or material
Coarse and fine wheels remove material at different rates; the reference ships with 60- and 120-grit wheels.
A lower nominal speed can help control heat, but technique and wheel condition still matter.
Water-cooled systems favor slower material removal and jig-guided repeatability.
Choosing the tool
- Match wheel diameter, width, arbor and rated speed to the specific grinder.
- Check stable mounting, guard coverage and accessible tool-rest adjustment.
- Plan a separate honing step for fine woodworking edges.
Useful accessories
- Bench mounting hardware
- Maker-approved sharpening jig
- Wheel dresser
Consumables
- Compatible 8-inch wheels
- Replacement shields
- Approved wheel blotters
04 / Keep control
Care, troubleshooting and safety
Stop the tool and disconnect power before investigating a fault or changing a part.
Care checklist
- Unplug before guard, rest or wheel work.
- Dress a glazed wheel with an approved tool using the manual's method.
- Inspect wheels for cracks, chips or excessive wear; replace unsafe wheels.
- Keep guards, shields, rests and mounting bolts secure and free of packed debris.
Common mistakes
- Using a wheel with inadequate speed rating or wrong arbor fit.
- Grinding on the side of a wheel not rated for side load.
- Leaving the rest too far from a worn wheel.
- Holding one spot until the tool edge overheats.
Safety at the operation
- Wear safety glasses plus a face shield as appropriate; shields are not eye protection.
- Keep guards in place and stand out of the wheel plane at startup.
- Do not wear loose sleeves or gloves that can catch; keep hands clear of the gap.
- Let the wheel stop completely before leaving or changing adjustments.
When the result goes wrong
Stop, unplug and inspect mount, wheel damage, seating and flange fit; do not operate a suspect wheel.
Reduce pressure, move the tool across the face, dress a glazed wheel and manage cooling.
Stop and set the specified rest clearance; replace a damaged rest or wheel.
05 / Sources to keep learning
Manuals and educational resources
Use the exact tool manual for setup, limits and replacement parts. These lessons, documents and model pages teach relevant techniques or help compare real variations.
Manufacturer manuals
Learn and compare
06 / Manufacturer directory
Manufacturers & Brands
These maker-owned links document relevant tools and tool brands. A product brand may use another company's factory; compare the exact model before choosing parts or accessories.
Choose parts for the exact model
Cutters, abrasives, guards, guides, dust fittings and service parts vary by tool. Check the model plate and manufacturer manual before ordering or changing a component.
Compare the Powered Sharpening Systems family →Continue through the Tools library