Bosch GSS 18V-10 cordless orbital sander with rectangular pad and top-mounted power button; battery compartment shown.
Labeled Bosch GSS12V-40 sander highlighting ergonomic grip, speed selector, dust collection, and brushless motor features.
Bosch GSS 18V-10 cordless orbital sander with triangular sanding pad; ergonomic grip and red switch visible.
Bosch GSS12V-40 cordless orbital sander with brushless motor and battery indicator; compact design with textured grip.
Bosch hand sander with white sanding sheet on rectangular pad; red power button and dust port visible on side.
Front view of Bosch sheet orbital sander with dust port and clamps for securing sandpaper; rectangular pad shown.
Detail view of Bosch sander’s rectangular sanding pad with dust extraction holes; red switch and black handle visible.
Bosch handheld sander with red power button and speed dial; warning label inserted into dust collection vent.
Close-up of Bosch electric sander with dust collection canister and red power button; ergonomic contours for grip.
Bosch GSS 18V-10 cordless orbital sander with rectangular sanding pad and ergonomic grip; battery compartment visible.
Person using Bosch detail sander with pointed pad to smooth chipped paint on wooden window frame; workshop setting visible.
Bosch GSS 18V-10 cordless orbital sander with rectangular pad and top-mounted power button; battery compartment shown.
Labeled Bosch GSS12V-40 sander highlighting ergonomic grip, speed selector, dust collection, and brushless motor features.
Bosch GSS 18V-10 cordless orbital sander with triangular sanding pad; ergonomic grip and red switch visible.
Bosch GSS12V-40 cordless orbital sander with brushless motor and battery indicator; compact design with textured grip.
Bosch hand sander with white sanding sheet on rectangular pad; red power button and dust port visible on side.
Front view of Bosch sheet orbital sander with dust port and clamps for securing sandpaper; rectangular pad shown.
Detail view of Bosch sander’s rectangular sanding pad with dust extraction holes; red switch and black handle visible.
Bosch handheld sander with red power button and speed dial; warning label inserted into dust collection vent.
Close-up of Bosch electric sander with dust collection canister and red power button; ergonomic contours for grip.
Bosch GSS 18V-10 cordless orbital sander with rectangular sanding pad and ergonomic grip; battery compartment visible.
Person using Bosch detail sander with pointed pad to smooth chipped paint on wooden window frame; workshop setting visible.
BOSCH

Bosch Sheet Orbital Finishing Sander GSS12V-40N 12V Bare Tool Brushless (6000-10000 OPM Variable Speed Woodworking Corner Detail Sanding)

In stock
SKU: GSS12V-40N
$169.00 USD

Description

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Bosch GSS12V-40N 12V Max Cordless Brushless Sheet Orbital Finishing Sander Bare Tool

The Bosch GSS12V-40N 12V Max Cordless Sheet Orbital Finishing Sander is a compact battery-powered surface prep tool engineered for fine woodworking, cabinetry touch-ups, and corner detail sanding. Driven by an efficient brushless motor generating variable speeds from 6,000 to 10,000 OPM, this lightweight sander delivers corded-like removal rates while keeping hand fatigue minimal during overhead or vertical orientation. Outfitted with interchangeable sanding backing plates and integrated dust extraction ports, this cordless unit ensures flat, swirl-free surface finishing across tight trim profiles and wood joinery.

**Battery and charger sold separately.

Best Used For:

  • Cabinetry & Custom Furniture Finishing: Smoothing hardwood door panels, face frames, and veneer edges prior to applying stain or sealer.
  • Detail & Tight-Corner Sanding: Accessing hard-to-reach internal corners, window casings, and narrow wood trim pieces using interchangeable plate attachments.
  • Jobsite Paint Prep & Drywall Touch-Ups: Feathering paint edges, removing surface blemishes, and sanding filler patches in confined residential spaces.

Key Performance & Safety Features

  • 12V Max Brushless Motor: Delivers long runtime and motor longevity while maintaining constant rotational speed under downward hand pressure.
  • Variable-Speed Adjustment Dial: Allows woodworkers to configure orbit rates between 6,000 and 10,000 OPM to match delicate veneers or dense lumber.
  • Interchangeable Sanding Plate Design: Modular base accommodates 1/4 sheet, 1/3 sheet, and detail delta plates for maximum application versatility.
  • Hook-and-Loop Backing Pad: Secures abrasives tightly while facilitating fast sandpaper sheet swaps on active production lines.
  • Integrated Dust Collection Port: Captures fine wood dust using the included mobile filter bag or connects directly to a shop vacuum hose.
  • Ergonomic Palm-Grip Profile: Balanced low-profile housing places user control directly above the workpiece for superior surface feel.

What's Included

  • (1) Bosch GSS12V-40 12V Max Brushless Sheet Orbital Finishing Sander (GSS12V-40N)
  • (2) Interchangeable Sanding Plates
  • (3) Abrasive Sandpaper Sheets
  • (1) Mobile Dust Bag
  • (1) Paper Hole Punch Tool

Technical Specifications

Brand / Manufacturer Bosch
Model / Part Number GSS12V-40N
System Voltage Rating 12V Max DC
Motor Structure Type Brushless DC Motor
Orbital Speed Range 6,000 – 10,000 OPM
Abrasive Compatibility 1/4 Sheet, 1/3 Sheet, Detail Sheet
Abrasive Attachment Method Hook-and-Loop System
Dust Management Type Filter Bag / Vacuum Hose Adapter
Overall Dimensions (L x W x H) 7.7 in. x 5.2 in. x 4.3 in. (195.58 mm x 132.08 mm x 109.22 mm)
Bare Tool Net Weight 1.8 lbs (0.82 kg)
Pro-Tip: Use the included hole punch template on standard plain-backed sandpaper sheets to punch dust extraction holes alignment-matched to the backing plate for maximum airborne dust capture.