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GR29 Grinder | Stanley GR29 Underwater Hydraulic Grinder

GR29 Grinder | Stanley GR29 Underwater Hydraulic Grinder

Ref: GR29 30101 CE

Stanley GR29 Hydraulic Underwater Grinder is used by divers and ROV’s alike for grinding, cutting and cleaning with a variety of grinding wheels and cutting discs plus wire and nylon brushes for de-scaling and cleaning. This hydraulic underwater tool can be used by commercial divers to clean off barnacles or marine growth from of the bottom of the ships.

The CE version of the Stanley Underwater Hydraulic Grinder part number GR29 30101 comes with quick disconnect couplers. Hose whips are available separately for the Stanley Hydraulics Underwater Grinder part number GR29310.

The GR29 - 30101 Grinder has a high torque gear motor which drives a 5/8-11 threaded spindle plus has an adjustable 9” guard. It takes a 9" or 7" discs and other accessoires plus can be fitted with many different types of wheels for cutting, grinding, buffing, polishing and barnacle removal.

The integral Stanley Hyrevz gear motor is manufactured to exacting standards to deliver maximum efficiency for the Stanley Hydraulics Underwater Grinder GR29. The plastisol covering the handle transmits very little heat. The plastisol gives a more comfortable grip to the Stanley Hydraulic Underwater GR29. There are two positions available for the assist handle to be conveniently placed by the commercial diver. Either position is at a most comfortable handling position from the valve handle.

We also carry a full range of spares and accessories for the GR29 grinder most available from stock.


Stock Level  ____________

Over 5 Available


Stanley GR29 Grinder Specifications

  • Capacity: 9 in. wheel on 5/8 in. -11 arbor
  • Rpm: 2700 @ 10 gpm (2700 @ 38 gpm)
  • Weight (with guard): 14 lbs. (6.4 kg)
  • Length: 11 in. (28 cm)
  • Width (with guard): 12 in. (30.5 cm)
  • Pressure: 1000 - 2500 psi (70-176 bar)
  • Flow range: 4-10 gpm (15-38 lpm) at the commercial diver
  • Optimum flow: 10 gpm (38 lpm)
  • Porting: -8 SAE O-ring
  • Motor: Stanley Hyrevz Gear


  • Grinding wheels are sold separately
  • 4-10 gpm (15-38 lpm) operating range at the commercial diver end
  • 2700 rpm @ 10 gpm (38 lpm)
  • Adjustable wheel guard
  • Assist handle with plastisol covering


The GR29 Grinder is suitable for a wide range of tasks and EC Hopkins offer a wide range of cutting and grinding consumables for this and all the stanley underwater tools.

Consumables include standard abrasive discs through to diamond discs. Please click on the PDF files below to see the range of accessories and consumables for the GR29 Grinder .

GR29 Cutting & Grinding Accessories 07-2016.pdf

GR29 Scaling & Cleaning Accessories 06-2015.pdf

Stanley GR29 Underwater Grinder

For the GR29 Data Sheets and Manuals Please Click on the PDF files below.

Data Sheet GR29UW 07-2016 v4.pdf

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Contact Details

EC Hopkins Limited Hydraulics
Unit 1,
82 Kettles Wood Drive
Woodgate Business Park
Woodgate Valley
B32 3DB

Tel: +44 (0)121 506 6095
Fax: +44 (0)121 421 8286