Blade and arbor
The specified blade sits between arbor flanges beneath a tightened nut. Use the exact diameter, arbor and speed limits in the Type 2 manual.
Power Tools / Saws / Field guide
Table Saw
Understand the blade, arbor, guarding, riving knife, fence, height and bevel controls that make a table saw a precise but demanding cutting station.
2Type10 inBlade
01 / Tool anatomy
See the assembled tool and its components
An original educational poster identifies 12 documented parts and systems. The numbered descriptions remain readable below the artwork on narrow screens.
- Blade guard
Covers the blade during applicable through-cuts.
- Riving knife
Follows the blade through the kerf to help resist closing stock.
- 10-inch blade
Cuts the material above the table when correctly mounted.
- Arbor and flanges
Clamp the blade to the drive shaft.
- Motor and drive
Transmit power through the documented gear group to the arbor.
- Table casting
Supports stock and the saw's guide assemblies.
- Throat plate
Closes the tabletop opening around the blade.
- Rip fence
Guides an edge for a parallel rip cut.
- Fence rails
Position the rack-and-pinion fence system.
- Height and tilt controls
Set blade elevation and bevel relative to the table.
- Dust shroud and port
Direct under-table chips toward a collector.
- Rolling stand
Supports the portable saw when deployed and locked.
Technical references: DeWalt DWE7491RS Type 2 manual · DeWalt DWE7491RS Type 2 exploded diagram A · DeWalt DWE7491RS Type 2 exploded diagram B. The DWE7491RS Type 2 manual and its two official exploded diagrams ground the identified systems. Their arrangement is for teaching and does not claim exact hidden service geometry or sequence. 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
A table saw raises a circular blade through a supported table; a rip fence guides cuts parallel to an edge, while a miter gauge or suitable sled guides crosscuts. The DeWalt DWE7491RS Type 2 reference is a portable jobsite saw with a rolling stand and rack-and-pinion fence rails. Cabinet, contractor and compact saws vary substantially in motor drive, trunnion mounting, mass and safety systems. Never borrow service assumptions from another type.
The Type 2 motor and arbor assembly drive a clamped 10-inch blade. Height and bevel controls position the blade relative to the table. A correctly aligned riving knife follows behind the blade, with the guard used for suitable through-cuts. The fence slides on its rail system to set rip width, while the throat plate supports stock near the blade and the under-table shroud sends chips to a dust port. The poster groups documented systems, not exact Type 2 disassembly geometry.
Guard and riving knife
The guard covers the exposed blade during applicable through-cuts; the riving knife tracks the kerf to reduce closing behind the blade. Set and align both per the manual.
Table and throat plate
The table supports the work. An appropriate throat plate closes the opening without touching the blade; change it only with power disconnected.
Fence and rails
The rack-and-pinion rails position the rip fence; lock it parallel to the blade for a rip cut and check the rear support.
Elevation and bevel
The front handwheel and bevel controls set blade height and angle. Type 2 drawings show the supporting mechanism, but the illustration avoids unverified hidden precision.
Stand and extraction
The rolling stand supports the portable saw when deployed and locked. An under-table shroud and port collect chips when connected to suitable extraction.
01 / Working relationship
How the main groups connect
02 / Working principle
Set, guide and control the action
These decisions make the mechanism useful at the bench.
Choose the cut guide
Use the fence for ripping and a miter gauge or sled for crosscutting. Do not trap a cutoff between a fixed fence and blade.
Set blade and guard
Disconnect power, inspect the correct blade and throat plate, set modest blade exposure and install guard/riving knife for the operation.
Plan the feed
Support infeed and outfeed, position the body out of the kickback line and use a push stick or other suitable device as the hands approach the blade.
Rip solid wood
Mark a straight reference edge, set the rip fence and keep the board supported through the cut.
Break down sheet goods
Provide broad support and a safe handling plan; a track saw or panel saw may be safer for an oversized sheet.
Crosscut
Use a miter gauge or sled with stable support. Keep the rip fence clear of a free offcut unless a safe stop arrangement is specified.
03 / At the bench
Setup, technique and finish quality
Use the steps for a first pass, then inspect the work before changing the setup.
- Read the exact DWE7491RS Type 2 manual and identify the guard, riving knife, push stick, fence and stop switch.
- Set up and lock the stand; inspect blade condition, throat plate, arbor nut and dust connection with power disconnected.
- Select a suitable blade, set its height and bevel, and align the fence or miter guide for the cut.
- Confirm the riving knife and guard configuration required by that operation; never omit them casually.
- Support the stock before and after the blade, clear the offcut path and stand outside the kickback line.
- Start with wood clear of the blade; feed steadily without twisting or pinching the cut.
- Use a push device when needed; switch off and wait for a complete stop before reaching near the blade or moving an offcut.
Ripping versus crosscutting
The fence references a long edge for ripping; a miter gauge or sled references an end for crosscuts. Combining guides incorrectly can trap stock.
Kickback path
A misaligned fence, pinched kerf or twisted work can drive material back. The riving knife, guard, correct guide and body position all matter.
Blade selection
Tooth count, hook angle, plate thickness and kerf must match material and the riving-knife requirements in the manual.
Type-specific service
DWE7491RS has multiple production types. The Type 2 manual and diagrams are the references here; check the type on the tool before ordering parts.
What changes by model or material
Cabinet saws have different mass, motor/drive arrangements and often different trunnion structures. Do not map this portable Type 2 mechanism onto them.
Rack-and-pinion rails are a feature of the reference model; T-square and other fences set/lock differently.
Some saws add anti-kickback pawls or flesh-detection brakes. Follow the exact saw's documented system and compatible blade rules.
Dado use is model, region, blade and insert specific. Never assume a saw accepts a dado stack without exact manufacturer instructions.
Choosing the tool
- Compare rip capacity, table support, fence accuracy and mobility for the work you make.
- Look for a guard/riving-knife arrangement you can set correctly for common operations and maintain with available parts.
- Check the required supply, dust system, blade format and stand stability before purchase.
Useful accessories
- A model-compatible miter gauge or crosscut sled, outfeed support and push aids.
- Appropriate throat plates and guard parts only where approved for the exact type.
Consumables
- Correctly sized, speed-rated saw blades for ripping, crosscutting or sheet goods.
- Replace worn throat plates or push devices when damaged.
04 / Keep control
Care, troubleshooting and safety
Stop the tool and disconnect power before investigating a fault or changing a part.
Care checklist
- Disconnect power and wait for a full stop before blade, guard or insert changes.
- Keep tabletop and rails clean; inspect fence lock and alignment.
- Inspect blade, arbor nut, riving knife, guard and push devices before use.
- Clear dust from the shroud and ports per the manual; check stand locks and cord.
Common mistakes
- Using the rip fence as a crosscut stop that traps an offcut.
- Removing the guard/riving knife for convenience on a through-cut.
- Pushing narrow stock by hand close to the blade.
- Feeding unsupported sheet goods that can tip or rotate.
Safety at the operation
- Wear eye and hearing protection; manage wood dust and keep distractions away.
- Keep hands out of the blade path and stand out of the kickback line.
- Use the correct guide, guard, riving knife and push aids for the operation.
- Never reach over or behind a moving blade; wait for a complete stop.
When the result goes wrong
Stop; inspect blade sharpness, fence alignment, stock straightness and feed pressure.
Check blade choice/condition, support, throat plate and cut direction.
Disconnect power; check stand lock, blade mounting, debris and damaged blade.
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
DeWalt DWE7491RS Type 2 instruction manual
Official guarding, blade, fence, stand, alignment and operating instructions for this type.
DeWalt DWE7491RS Type 2 exploded diagram A
Official Type 2 table, fence, rail and control service illustration.
DeWalt DWE7491RS Type 2 exploded diagram B
Official Type 2 motor/arbor, dust and stand service illustration.
Learn and compare
DeWalt DWE7491RS model documents
Official model/type selector for current documentation and product specifications.
DeWalt Table Saws: How-To Videos
Maker videos on setup, guards, fence and blade adjustments; check the model shown before following a step.
Function of Riving Knives — video
WoodWorkers Guild of America explains kerf control and riving-knife purpose in a table saw.
Safe Ripping and Cross Cutting — video
General technique demonstration with a different saw; retain the DWE7491RS manual for model-specific setup.
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.
DeWalt DWE7491RS jobsite table sawBosch 4100XC-10 worksite table sawSawStop Cabinet, contractor and jobsite table sawsMilwaukee M18 FUEL 8¼-inch table sawJET JPS-10 ProShop II table sawPowermatic Cabinet table saw rangeLaguna Fusion table sawsSKIL TS6307-00 portable table sawGrizzly Woodworking table saw rangeRYOBI Jobsite table saw rangeMetabo HPT C10RJS jobsite table sawRIDGID Portable table saw rangeMakita 2705 historical table saw model (discontinued)
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 Saws family →Continue through the Tools library