Specs from the makers' own documentation Battery compatibility built in UK retailer prices, updated daily 25+ years of trade experience
‹ Dual Action Polishers
12V Professional · Brushless
GPX 12V-77 Dual action polisher No product photo yet
Dual Action Polishers · Bosch 12V Professional

Bosch GPX 12V-77 Professional Brushless 77mm Dual Action Polisher (Body Only)

5-speed3 years (with registration)

Bosch GPX 12V-77: cordless dual action polisher, 77mm backing pad, 12mm orbit, 1,400–7,000rpm.

Adds it to My Tools, kept on this device
How do you want it?2 ways to buy · tap one to see what's in the box
Lowest price we track
No retailer price yet
None of the retailers we track lists it right now.
77mm
Backing pad
12mm
Throw
3.2m/s²
Vibration

Full specs

From Bosch's own documentation. Checked 10/10/2026. Report a spec error ›

Pad & Polishing

MotionDual action (random orbit)
Backing pad77 mm
Throw (orbit)12 mm

Physical & Build

Noise level< 70 dB(A) LpA / 78 dB(A) LwA
Vibration (polishing)3.2 m/s²

Speed & Control

Top speed (rpm)7,000 rpm
Lowest speed (rpm)1,400 rpm
Top speed (orbits)14,000 opm
Lowest speed (orbits)2,800 opm
Speed dial positions5
Variable speed✓ Yes
Soft start✓ Yes

Power & Motor

Voltage12V
MotorBrushless

Powered by Bosch 12V Professional · 3

All 3 batteries that fit this tool, smallest first. Kits and chargers ›

GBA12V-20 2.0Ah · 24Wh 0.18kg from £46.99at Machine Mart + £4.99 delivery View at Machine Mart ›
GBA12V-30 3.0Ah · 36Wh 0.18kg from £55.00at Machine Mart + £4.99 delivery View at Machine Mart ›
GBA12V-60 6.0Ah · 72Wh 0.39kg from £79.99at Machine Mart + £4.99 delivery View at Machine Mart ›

We may earn a commission on retailer links.

Warranty · 3yr

Up to 3 years1 year as standard, 3 once you register it with Bosch
Register with Bosch ›
Register within 28 days of buying Own one? Add it to My Tools and we'll remind you before the 28 days run out

Register within 4 weeks. Batteries & chargers can also be extended (unlike DeWalt/Makita).

Warranty terms are set by the maker and can change. Always confirm current cover on their site before you buy.

Related guides

Buying a Spare Power Tool BatteryBuying Guides

Buying a Spare Power Tool Battery

A spare battery is the most common thing anyone buys after the tool itself, and it is the easiest one to get…

Read guide ›
Impact Driver vs Combi Drill: Which Do You Actually Need?Getting Started

Impact Driver vs Combi Drill: Which Do You Actually Need?

They look similar, they cost about the same, and most people buy them as a twin kit without ever being told what…

Read guide ›
First and Second Fix Carpentry ExplainedGetting Started

First and Second Fix Carpentry Explained

"First fix" and "second fix" get said on every site, and nobody stops to explain them, which leaves anyone starting out nodding…

Read guide ›
Browse all buying guides ›
‹ Back to Dual Action Polishers
How we make money: Affiliate disclosure
Scroll to Top