Polivac JH-G4 Mitchell Oscillating Sander / Scrubber

Choose the Polivac Mitchell JH-G4 for Tight Spaces Yet Professional Results

When the job takes you into tight corridors, stairwells, apartments and smaller commercial spaces, the right machine isn't necessarily the biggest one — it's the one that actually fits. The Polivac Mitchell JH-G4 is a compact, lightweight oscillating sander and scrubber that delivers the same high-speed orbital performance as its larger sibling in a 42 kg package that goes where heavier machines simply can't.

Less aggressive than a belt sander, more effective than a standard swing machine, the JH-G4 gives professional floor contractors and facility maintenance teams the precision to choose exactly how much surface they want to remove — from a light scuff to strip a floor back to bare timber. Australian-made by Polivac, a name trusted in the industry for over 60 years, and backed by a 1-year motor and parts warranty.

Key Benefits & Features of the Polivac Mitchell JH-G4

• High-speed oscillating system for a superior floor finish — Operating at 2,900 oscillations per minute, the rectangular orbital action of the JH-G4 delivers a more even, consistent finish than traditional rotary machines. This eliminates swirl marks and reducing the time needed to achieve a professional result, regardless of the space you're working in.

• Lightweight and highly manoeuvrable at just 42 kg — At nearly 36% lighter than the JH-G5, the JH-G4 is significantly easier to transport between floors, rooms and job sites. It navigates doorways, corners and tight access points with minimal effort, making it the practical choice for multi-level residential and commercial work.

• Vibration-isolated handle for fatigue-free operation — The handle is fully isolated from the machine base, meaning the operator absorbs virtually none of the machine's oscillation during use — allowing for extended cleaning and sanding sessions without the physical strain typical of high-frequency floor machines.

• Dual-purpose: sander and scrubber in one machine — With the optional solution tank, the JH-G4 converts from a floor sander into a fully functional scrubber. Adjustable weights allow operators to fine-tune the machine's downward pressure to suit the surface and the task at hand.

• Wide range of pads, screens and sandpapers for every application — From light maintenance coats through to heavy stock removal, the JH-G4 accepts a broad selection of cleaning pads, sanding screens and sandpapers. This gives operators complete control over the level of surface preparation required for each job.

JH-G4 vs JH-G5: Which Polivac Mitchell Oscillating Sander is Right for You?

Both the JH-G4 and the JH-G5 share the same proven oscillating technology — identical motor output, oscillating speed, handle design, lead length and cast iron construction. The core difference comes down to pad size and machine weight, and that distinction matters more than it might first appear.

• Choose the JH-G4 (38 cm × 25 cm pad / 42 kg) — The lighter, more manoeuvrable option. Ideal for smaller rooms, narrow corridors, stairwells, apartments and any space where tight access or transport between floors is a factor. Its lower weight is easier on operators over long shifts and makes moving between job sites more practical. Best suited to domestic properties, boutique retail spaces and commercial tenancies with constrained layouts.

• Choose the JH-G5 (48 cm × 33 cm pad / 66 kg) — The high-productivity option, offering 56% more pad coverage per pass than the JH-G4. Fewer passes means faster job completion on large, open floor areas. The additional machine weight also increases downward pressure, an advantage on heavily soiled floors or when more aggressive stock removal is required. Best suited to large open-plan offices, hotel ballrooms, school halls, warehouse floors and commercial spaces where access isn't a constraint.

Polivac Mitchell JH-G4 Technical Specifications

• Motor: 1.1 kW (1.48 HP), 50 Hz, 230–240 V

• Plate & Pad Size: 38 cm × 25 cm

• Oscillating Speed: 2,900 oscillations per minute

• Weight: 42 kg

• Handle: Fully height adjustable, vibration-isolated

• Power Lead: 13 m heavy-duty flexible safety rubber

• Body Construction: Cast iron

• Finish: Powder coated

• Solution Tank: Optional

• Warranty: 1 year on motor and parts

Polivac Mitchell JH-G4 Manual

Operator's Manual

Polivac Mitchell JH-G4 Manual

Brochure

Polivac Mitchell JH-G4 Brochure