Husqvarna PG 680

The Husqvarna PG 680 is an excellent choice for applications both large and small and especially commercial purposes. Smaller in size than the PG 820 the PG 680 is renowned for its manoeuvrability and ease of use without sacrificing power and output.

Benefits & Applications
Videos
Technical specifications
Accessories, Parts & Related products
Recommended tools
User guide
Documentation
Article no.

Benefits

Application range

Application range
Applications range from concrete floor preparation and repair to grinding and polishing of concrete floors as well as the repair and polishing of terrazzo and other natural stone.
High power machinery

High power machinery
High power machinery capable of delivering extremely high production rates, increasing profit and saving valuable time.
Robust machine

Robust machine
Superior industrial strength construction delivers an atrractive yet robust machine.
Multi purpose application possibilities

Multi purpose application possibilities
Multi purpose application possibilities. A highly versatile line of equipment.
Comprehensively tried and tested

Comprehensively tried and tested
Comprehensively tried and tested on actual projects, ensuring technological effectiveness in the field in most applications and situations.
Low cost

Low cost
Low tool and maintenance cost per square metre/foot.
5-way sealing mechanism

5-way sealing mechanism
A unique 5-way sealing mechanism protects bearings and internal parts from aggressive concrete dust and slurry, which contributes to a longer machinery service life before first service and between subsequent services.
Easy to use control box

Easy to use control box
The control box is clearly marked and easy to use. Regulates and controls various functions on the machine.
Redi-lock

Redi-lock
Husqvarna’s Redi Lock™ is an instant and hassle-free system for changing diamond tooling. Robust construction ensures maximum protection and life of your diamond tools.
HiPERFLOOR™

HiPERFLOOR™
HiPERFLOOR™ is a unique method with low environmental impact, for mechanical grinding, treatment and polishing of concrete floors. As well as increased hardness and durability, the result is a floor with spectacular reflective qualities, whether in residential, commercial or industrial settings.

An excellent machine with power and a versatile size.
At 680 mm, it will fit through a standard door making it accessable to most projects.
Dual Drive Technology™ – fully independent control of both planetary and satellite grinding heads in regards to speed and direction of rotation. This enables higher production rates.
Triple-headed grinder – more downward pressure and power can be delivered to grinding heads. More stable operation over undulating surfaces.
Market-leading power-to-weight ratio.
Long machinery service life thanks to the 5-way sealing mechanism, the spring steel head system and all zincplated steel parts.
Gear-driven planetary head; premium quality belt for powering grinding heads.
Industrial strength construction (robust steel frame, strong single-piece aluminium cover).
Low tool cost.
Ease of manoeuvrability and enhanced operator control.

Ergonomically advantageous

Low impact on operator’s body when handling due to ergonomic frame and handle design.
Dual Drive Technology™

Dual Drive Technology™ – a unique patented twin motor arrangement with separate motors for grinding discs and planetary which enables total control of head speed and direction. This increases production rates, enhances operator control and allows for a wider range of applications, compared to any other planetary machine.
Best in class

Best in class in terms of performance, reliability and longer machinery service life - before first service and between subsequent others.
Solid hard rubber wheels

Solid hard rubber wheels help the machine to deliver smoother cutting and polishing.

Technical specifications for PG 680

Engine
Power output	12.5 kW
Rated current, A	32 A
Voltage	380 / 480 V
Phases	3

Specs
Grinding width	680 mm / 27 "

Dimensions
Weight	385 kg / 850 lbs

Recommended tools

Model	G 11X1 D	Redi Lock G 1170	Redi Lock G 1140	Redi Lock G 1150	Redi Lock G 1120	Redi Lock G 1110	Redi Lock G 1110	Redi Lock G 1110	Redi Lock G 1140	Redi Lock G 1110	Redi Lock G 1110
Optimal Good Acceptable —
Materials

Safety instructions

Safety instructions

Under no circumstances may the machine be started without having read the operators manual and paid special intensions to the safety instructions found in the operator’s manual. Should the user fail to comply with these, Husqvarna Construction Products Sweden AB or its representatives are free from all liability both directly and indirectly. Read through these operating instructions and make sure that you understand the contents before starting to use the machine. Should you, after reading these safety instructions, still feel uncertain about the safety risks involved you must not use the machine. Please contact your dealer for more information.
Unpacking

Unpacking

To prevent damage to the Grindng shrould when unpacking and transporting ensure to follow the recommended procedure as outline in the supporting video.
Setup workspace

Setup workspace

Position grinder on the working area. Set handle in upright position (illustrated right).

Pull back on handle using the kicker bar to lift grinding head off the ground.

Lay machine back on the ground.

WARNING!

Ensure STOP/RUN switch is in STOP position as unintentional starting of machine while changing discs can result in serious injury.
Assembling diamonds

Assembling diamonds 1/3

Have a set of gloves ready, as diamonds can get very hot during dry grinding applications.

WARNING!

Ensure STOP/RUN switch is in STOP position as unintentional starting of machine while changing discs can result in serious injury.

Assembling diamonds 2/3

As different applications require different selections of diamond tools, there will be many occasions when the grinding discs need to be changed.

Place diamonds as shown in the Redi Lock™ diamond holder disc and secure by tapping lightly. Assembly discs on planetary head lock screws by slightly rotating it.

Note

When using the machine, each grinding head should always have the same diamond type and number of diamonds as the other grinding heads. Each grinding head must have diamonds the same height as the other grinding heads.

WARNING!

Ensure STOP/RUN switch is in STOP position as unintentional starting of machine while changing discs can result in serious injury.

Assembling diamonds 3/3

Once new diamonds have been attached, reverse procedure to lower machine to ground.

Adjust rubber skirt so that a good seal is established between the floor and head of the machine. Ensure join in skirt is at the front of the machine to allow for better air flow. Setting of the skirt is essential to obtain good dust extraction and minimise the possibility of airborne dust.

WARNING!

Ensure STOP/RUN switch is in STOP position as unintentional starting of machine while changing discs can result in serious injury.
Adjusting Handlebar

Adjusting handlebar

Set handle to most comfortable working height using adjustment lever.

Note

It is recommended that this height be set as close as possible to the height of the operator’s hip bone. When the machine is running, there can be a slight grinding force/pull to one side that can be felt through the handlebars. Use the hip to resist this force instead of trying to control this through the arms (such positioning will be much easier for the operator using the machine over prolonged periods of time).
Connect DC

Connect DC

-Connect the hose to the PG Grinder.

-Connect the hose to the DC.

-Attach the plastic bag to the DC, if this is not already in place.

-Plug in the power cable to the DC.

Note

The power cable dipictad in the footage may vary from region to region.
Powering up machine

Powering up machine

Ensure the STOP/RUN switch is set on Stop (rotate counter clockwise).

Plug power supply to machine. Only turn power on at plug once fully connected.

Disengage Emergency Stop button (twist clockwise).

Depress Power button. On doing so, a soft “clunk” should be heard to come from within the electrical cabinet. This indicates the line contactors have engaged, supplying power to the drives/frequency converters.

Note

The power cable dipictad in the footage may vary from region to region.

Note

Always have the DC Vac running before starting to run the Grinder
Smooth start

Smooth start

Standing behind machine with handlebars set as described earlier, apply a small amount of downward pressure on the handle. Switch the machine to run mode using the STOP/RUN switch on the control panel.

The machine should start smoothly and accelerate to the selected speed over a period of 5 seconds.
Setting speed and rotation

Setting Speed and rotation 1/2

On the control panel there is a FORWARD / REVERSE and Speed dial. When starting the machine for the first time on any given application, it is advised that the speed setting should not exceed 7 on start up. As the application allows speeds may be increased during operation.

The machine should start smoothly and accelerate to the selected speed over a period of 5 seconds.

Setting Speed and rotation 2/2

Speed settings should be adapted to the specific application. This will differ from application to application and tools configurations.

For example having a faster satalite speed and slower planetary speed will allow the diamond tools to concertrate in the same area for a longer period of time, giving a higher stock removal rate.

In order to achieve maximum effiency different settings will be required.
Dual drive Technology

Dual Drive Technology™

Two types of planetary effects can be achieved with Dual Drive Technology™ – counter rotation and same direction rotation. Each of them creates a different dynamic under the machine and therefore, a different result in the grinding.
Counter rotation

Counter rotation 1/2

While in counter rotation, the diamonds closer to the centre of the machine move in the direction to the planetary rotation.

The diamonds toward the outside move away from the direction of planetary rotation.

As the inner diamonds are being accelerated in the direction of planatery rotation they grind more aggressively creating an inner band where the machine cuts more effectively.

Counter rotation 2/2

When the machine is moved forward, the middle zone is ground more thoroughtly then the outer zones. The end result is a deeper cut through the middle zone when compared to the outer zones.
Same direction rotation

Same direction rotation 1/2

While in same direction rotation, the diamonds closer to the centre of the machine move in the opposite direction to the planetry rotation.

The diamonds toward the outside move in the direction of planetary rotation.

As the outer diamonds are being accelerated in the direction of planatery rotation they grind more aggressively creating an outer band where the machine cuts more effectively.

Same direction rotation 2/2

When the machine is moved forward, the middle zone is still ground more thoroughtly then the outer zones but not as much as in the case of counter rotation. The end result is a more even cut through the middle zone when compared to the outer zones, which is less prominate then in counter rotation.
Grind-pattern relevancy

Relevance of grindning patterns

All planetary grinders remove more stock from the middle of the grinder. Always overlap the outer zones to ensure efficient and clean grinding.

Remember to change the grinding rotation each pass to maintain a uniformed direction over the floor.
Grinding close to a wall

Grinding close to a wall

When the machine is in operation it will slightly pull to one side. This force is determined by the planetary head rotation. When the head of the machine pulls in to the wall the operator will get a much closer cut to the wall.

A comfortable operating position should allow the handle bar to rest firmly against the operator´s hip.
Diamond selection

Diamond selection

The way diamond segments are set-up on the grinding heads of the machine will also greatly influence the performance of the machine, the productivity levels and also the finished floor quality.
Application reference
Full set vs Half set

Full set vs Half set 1/3

There are basically two types of diamond configurations that can be used when using the Husqvarna PG grinders:

Full set of diamonds. When there are diamonds placed at all positions on the diamond holder discs.

Half set of diamonds. When there are diamonds placed at each alternating positions on the diamond holder discs.

By changing the way the diamonds are set-up on the diamond holder discs, an operator can significantly affect the performance of the machine and therefore the finished product.

Full set vs Half set 2/3

A full set of diamonds will cut a flater floor when compared to a half set of diamonds.

The full set will remove all the high spots instead of carring with the surface of the floor and droping down into the low or softer spots.

With a full set of diamonds the highest level of flatness will be achivied.

Full set vs Half set 3/3

A half set of diamonds will follow the surface of the floor.

The grinder can be placed on an uneven surface and yet still find a stable footing. The half-set diamond configuration should be used when a flat floor is not required.

The half set will carry over the high spots and into the low spots, which is ideal to remove floor coatings or glues where optimum flatness is not the overall objective.
Diamond vs single segment

Diamond vs single segment 1/3

As well as using full set and half set, the operator can also choose from double or single segment tools. This will enable the operator to have control over both his tool economy and productivity.

Double segments: A double segment tool consists of two diamond segments on one Redi Lock™ shoe.

Single segments: A single segment tool consists of one diamond segments on one Redi Lock™ shoe.

Diamond vs single segment 2/3

Double segments are more commonly used as there is less preasure on each diamond segment resulting in lower cost and longer tool life. In principle double segments are used on softer concrete to prevent unwanted excess removal of the concrete stock.

Diamond vs single segment 3/3

A single segment is more commonly used on very hard surfaces as this increases the grinding pressure per diamond segment. This will result in a higher productivity and more aggressive concrete stock removal.

A significantly shorter tool life can be expected when using single segments due to the increase in segment preasure.

Husqvarna PG 680

Benefits

Application range

High power machinery

Robust machine

Multi purpose application possibilities

Comprehensively tried and tested

Low cost

5-way sealing mechanism

Easy to use control box

Redi-lock

HiPERFLOOR™

Ergonomically advantageous

Dual Drive Technology™

Best in class

Solid hard rubber wheels

Videos

Technical specifications for PG 680

Accessories for PG 680

Recommended tools

Model

Safety instructions

Safety instructions

Unpacking

Unpacking

Setup workspace

Setup workspace

Assembling diamonds

Assembling diamonds 1/3

Assembling diamonds 2/3

Assembling diamonds 3/3

Adjusting Handlebar

Adjusting handlebar

Connect DC

Connect DC

Powering up machine

Powering up machine

Smooth start

Smooth start

Setting speed and rotation

Setting Speed and rotation 1/2

Setting Speed and rotation 2/2

Dual drive Technology

Dual Drive Technology™

Counter rotation

Counter rotation 1/2

Counter rotation 2/2

Same direction rotation

Same direction rotation 1/2

Same direction rotation 2/2

Grind-pattern relevancy

Relevance of grindning patterns

Grinding close to a wall

Grinding close to a wall

Diamond selection

Diamond selection

Application reference

Full set vs Half set

Full set vs Half set 1/3

Full set vs Half set 2/3

Full set vs Half set 3/3

Diamond vs single segment

Diamond vs single segment 1/3

Diamond vs single segment 2/3

Diamond vs single segment 3/3

Documentation for PG 680

Articles for PG 680