RIDGID R8647B 18V Brushless Cordless Reciprocating Saw (Tool Only) review

RIDGID 18V brushless reciprocating saw · R8647B tool-only package

The R8647B is the tool-only version of RIDGID’s full-size 18V brushless reciprocating saw. The exact U.S. product page lists the R8647 saw, one wood-cutting blade and its manual; it says a battery and charger are sold separately. This assessment follows that exact package and the R8647 operator’s manual. It is a document-based review, not a report of ownership, cutting tests or measured performance.

A conventional cordless format with selectable motion

The R8647 has a front barrel grip and a rear D-handle in RIDGID’s exact-model image, placing it in the conventional two-handed category rather than the compact one-handed group. The manual specifies a 1-1/4-inch stroke and a 0–3,200-strokes-per-minute no-load range. RIDGID’s R8647B page repeats 3,200 SPM. Those are specifications, not a prediction of speed in a particular pipe, nail-embedded board or branch.

The product page calls the motor brushless and says the R8647 cuts 20% faster than the earlier R8643. That is the manufacturer’s stated comparison; no test protocol or independent timed result accompanies it. A brushless label alone does not establish runtime for your battery, service life or a better cut on every material. The useful distinction here is the documented combination of trigger control, a selectable orbital switch and an adjustable shoe.

Orbital action is a choice, not a default for every blade

The manual describes a switch between linear and orbital action. It characterizes linear motion as better for smooth cuts and orbital action as a faster-cutting setting. It also gives two important limits: let the motor stop fully before changing the selector, and do not use orbital mode with a metal-cutting blade. For metal, the manual instead recommends a slower speed and says not to force the saw. These instructions make the orbital feature a task-specific option, not a general reason to select the saw.

The shoe can extend or retract and its pivot angle adjusts automatically to the cut. The clamp is operated by a side lever without a separate blade-change wrench; the manual still requires removing the battery pack before changing blades. A trigger lock-off, LED above the blade clamp and integrated rafter hook are also described. RIDGID warns not to suspend the saw overhead or hang it from your body using the hook; it is for a stable support. For plunge cuts in wood or wallboard, the manual cautions against blades longer than six inches because of whipping and says to secure the workpiece.

The tool-only suffix is material

R8647B is not the R8647KN kit. The exact B-page package list includes a wood blade and manual but explicitly says battery and charger are separate. The page also describes compatibility with RIDGID 18V batteries, so this option is most coherent for a buyer who already has a compatible RIDGID pack and charging setup. If a 4.0 Ah battery and charger are needed in the same box, the KN suffix is a different retail configuration; do not infer its contents from a tool-only photograph or from a generic “R8647” title.

Against the older RIDGID R8646B, the published R8647B configuration is brushless rather than brushed and uses a 1-1/4-inch rather than 1-1/8-inch stroke. The earlier R8646 assessment describes a pivoting shoe and tool-free clamp but leaves orbital action unknown. These differences are useful for a paper comparison; they are not evidence that the R8647 cuts a given material faster than the R8646. The R8647 manual’s mode limits and the exact battery/package you will use remain more practical decision points than an unverified performance ranking.

Weight and clearance are not solved by the listing

RIDGID’s exact product table calls 6.710 lb “Product Weight” without saying whether the number is for the saw alone, a battery-installed tool or another product-weight basis. Because the package is tool-only, that label still does not prove bare-tool weight. I leave bare-tool weight unknown; a strict numerical weight filter therefore should not treat 6.710 lb as a saw-only measurement. The sources reviewed also do not supply an overall length or height, so check a dimensioned drawing if a particular stud bay or cabinet opening is the limiting factor.

The manufacturer recall page reviewed for this model group displayed a notice for two RIDGID framing nailers, not the R8647. That is a bounded page check, not proof that no other recall or service notice could apply. Confirm the serial/date information and current manufacturer notices for the exact tool you obtain.

Who should compare the R8647B

The R8647B is a reasonable model to investigate if you need a full-size cordless format, already use RIDGID 18V batteries and specifically value an orbital/linear selector together with a pivoting shoe and lever-operated clamp. It is less complete as a first-tool package because the battery and charger are excluded. Before choosing it, verify the exact R8647B suffix, confirm battery compatibility, select a blade for the material, and plan solid workpiece support and a safe path clear of concealed services. If a kit is the better starting point, compare the separate R8647KN package rather than assuming the two suffixes mean the same box.