Dynaset HHK 200-12, HHK 200-17 Instructions Manual

HYDRAULIC BENCH GRINDER

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HYDRAULIC BENCH GRINDER

2008

INSTRUCTIONS

HHK 200-12

HHK 200-17

P

T

To enable putting DYNASET hydraulic bench grinder into operation only pressure- (P) and return (T) lines are
to be connected to the hydraulic system.
Ensure that the hydraulic fluid flow is sufficient to run the unit, i.e. at least the nominal flow must be available.
At the hydraulic flow less that demanded nominal rate the grinder runs at underspeed. If the hydraulic flow is so
excessive, that the automatic speed control valve is unable to handle it, the unit begins to hunt. In the latter case
the hydraulic flow is to be reduced either by replacing an existing hydraulic pump with a suitable one or using flow
limiter. DYNASET PRIORITY VALVE is recommended.

After having been connected to the hydraulic system, DYNASET hydraulic bench grinder is to be started by
directing the hydraulic flow to the units pressure port by means of control valve - manual or solenoid. Even simple
ball valve or three-way valve can be used.
To ensure DYNASETs proper operation, the hydraulic pressure must be set at least to the level, at which the
nominal power output is achieved (ref. to PARAMETERS). Lower pressure reduces output power. Maximum
hydraulic pressure is 210 bar (ref. to PARAMETERS). If the hydraulic system main pressure is higher, service
pressure relief valve must be used.
Ensure also that your machines hydraulic fluid cooling is working properly when DYNASET unit is in operation.

DYNASET HYDRAULIC GENERATORS ARE DESIGNED FOR EASY INTEGRATION INTO HYDRAULIC SYSTEM OF ANY
TYPE:

DYNASET hydraulic bench grinder works being integrated into an original hydraulic
system of a material handling machine.

Unit can be placed deliberately ensuring an easy access to the unit. Grinder should be
positioned on a horisontal surface. Additionally, return line must be connected to a
hydraulic oil tank in the shortest possible way in order to keep return oil pressure under
5 bar. It is possible to use DYNASET either as a plug-in grinder and connect hydraulic
power with quick couplings, or make a fixed installation on a carrier machine.
Ensure that the filtration capacity of a hydraulic system is sufficient.

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HYDRAULIC BENCH GRINDER

2008

DYNASET HYDRAULIC BENCH GRINDER IS A COMPACT UNIT , DESIGNED FOR BOTH MOBILE AND
WORKSHOP INSTALLATION. THE ONLY POWER SOURCE IS A HYDRAULIC SYSTEM TO PROVIDE GRINDER
WITH REQUIRED HYDRAULIC FLUID FLOW AT DEMANDED PRESSURE.

DYNASET hydraulic grinder is assembled on a robust steel frame and includes following components:

hydraulic motor
automatic rotation speed control valve
grinding wheel shaft with support flange and locking nut
adjustable grinding support
grinding wheels protective cover with an adjustable spark screen.

An automatic rotation speed control valve keeps unit's rotation speed constant when incoming hydraulic oil flow
can vary from nominal (= minimum demanded flow) up to value of 50% over the nominal.

CONSTRUCTION

CLASSIFICATION

DYNASET hydraulic bench grinder is designed and manufactured in conformity with the standard SFS 5349.

INSTALLATION

T

CF

P

LS

LS valve

S

M

PT

DYNASET PV SAE 3/4 - 1 1/4 -XX lpm - 12/24 V priority valve includes

following components:

ALSO AVAILABLE for open centre hydraulic systems with variable displacement pump: PRIORITY VALVE PV C3C ¾ - 1 ¼ - 12/24 V.

DYNASET PRIORITY VALVE enables to operate your DYNASET-unit simultaneously with other hydraulic executors.

1.
Sandwich-mounted pressure
compensator with SAE-flange
specification;

2.
Solenoid valve 12/24V;

3.
Flow limiter;

4.
Pressure relief valve.

PV SAE priority valve is designed for the
installation to main pressure line between
SAE-flanges of main hydraulic pump. Pre­adjusted, independent from other
functions and priorised hydraulic flow for
DYNASET-unit comes from the solenoid
valve.

S

M

PT

T

CF

PP

LS LS

A

B

PV SAE valve

The demanded hydraulic flow is to be ensured and controlled with a DYNASET PRESSURE COMPENSATED
PRIORITY VALVE.

The rest of hydraulic pumps capacity is available for all other
functions. Furthermore, pumps control works together with
DYNASET PV SAE priority valve.

1. OPEN CENTRE HYDRAULIC SYSTEM WITH VARIABLE DIPLACEMENT PUMP

2. CLOSED CENTRE HYDRAULIC SYSTEM WITH VARIABLE DISPLACEMENT PUMP

The demanded hydraulic flow is to be ensured and controlled with a DYNASET PRESSURE
COMPENSATED LOAD SENSING (LS) VALVE.

DYNASET LS-valve includes following
components:

1.
Flow limiter;

2.
Solenoid valve 12/24V;

3.
Pressure relief valve;

4.
Optional shuttle valve.

DYNASET LOAD SENSING VALVES:

LSV 40, LSV 60, LSV 95 and LSV 150

LS-connection, pressure relief, max. hydraulic flow 40,

60, 95 ja 50 l/min respectively.

DYNASET FLOW LIMITERS to the pressure line:

VR 40 PK - 1/2, max. 35 l/min, with pressure compensation;
VR 95 PK - 3/4, max. 95 l/min, with pressure compensation.

ALSO AVAILABLE for closed centre hydraulic systems with variable displacement pump:
DYNASET SOLENOID VALVE to the pressure line for remote starting -

SV 70 NC - 1/2 - 12 / 24 V max 70 l/min with LS -connection;
SV 150 NC 1 - 12 / 24 V max 150 l/min with LS -connection.

AUTOMATIC

FREQUENCY

CONTROL VALVE

AUTOMATIC

ROTATION SPEED

CONTROL VALVE

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HYDRAULIC BENCH GRINDER

2008

INSTALLATION

In the first place the demanded oil flow is to be
ensured with the proper choice of a hydraulic pump.
In systems with redundant hydraulic flow an
installation with DYNASET PRIORITY VALVE is
recommended.

Installation with a standard pressure compensated
3-way valve should be avoided in order to close off
potential waving in hydraulic system.

ALSO AVAILABLE for hydraulic systems with
constant displacement pump:
DYNASET FREE CIRCULATION VALVE with
solenoid and pressure control, type VKV 903/4.

S

M

PT

AUTOMATIC

FREQUENCY

CONTROL VALVE

3. HYDRAULIC SYSTEM WITH CONSTANT DIPLACEMENT PUMP

1

Choose the graininess of grinding wheel according to your task.

2

Install the chosen grinding wheel onto the grinder:

- unscrew screws (pos. 15, 9 pcs.) and detach the protective cover (pos. 2) together with arched guard
and spark screen;

- unscrew the locking nut and remove flange from grinders shaft;

- put the grinding wheel onto the shaft, replace the flange and fix with the locking nut.

When tightening the locking
nut, the shaft is to be kept
unrotated with screwdriver as
shown on the above pictures.

ATTENTION !

Alternatively grinding wheels of 12 mm, 20 mm and 25 mm can be used. However their use is allowed only with
appropriate protective inserts attached to a grinding wheels cover.

GRINDING WHEEL PROTECTIVE INSERT
WIDTH, MM WIDTH, MM

25 8
20 12
12 12 + 8

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HYDRAULIC BENCH GRINDER

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INSTALLATION

PRIOR TO STARTING THE GRINDER

HYDRAULIC REQUIREMENTS GRINDING WHEEL HYDRAULIC PORTS WEIGHT

OIL FLOW OIL PRESSURE OD width mounting PRESSURE RETURN

MODEL l/min bar hole

min max min max mm mm mm P T kg

HHK 200/3000-12 12 20 180 210 200 32 32 BSP 1/2" BSP 1/2" 12,4 *

HHK 200/3000-17 17 30 180 210 200 32 32 BSP 1/2" BSP 1/2" 12,4 *

* with the grinding wheel of 32 mm

1

Ensure that the grinder is properly connected to the hydraulic
system of your carrier machine and there are no oil leakages
in system.

2

Ensure that the unit is securely fixed onto steady base or
frame.

3

Start the engine of your carrier machine. Adjust the rpm to
the demanded level if necessary.

4

Start the grinder with a control valve.

5

Put the tool to be sharpened onto the grinding support and
re-sharpen it or make other machining.

2008

180

200

265

233

185

301

11

4 kpl.

51

5

Grinder's protective cover has a junction pipe (OD 51)
for an exhaust blower. If an exhauster is available,
grinder can be connected to the ventilation system in
order to keep the working area clean from grinding
dust.

3

Replace and fix the protective cover. Adjust the position of a spark screen.

4

Adjust and tighten the grinding support.

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HYDRAULIC BENCH GRINDER

OPERATION

PRIOR TO STARTING THE GRINDER

P

T

11

9

8

10

6

1

7

15

2

5

12

13

4

3

12

13

15

29

13

19

20

21

22

23

24

18

50

51

51.2

14

17

16

1560

55 56

2008

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HYDRAULIC BENCH GRINDER

No STOCK DESIGNATION DETAILS QUANTITY

NUMBER HHK...-12 HHK...-17

1 07051713 FRAME 1 1
2 07051708 GRINDSTONES COVER 1 1
3 07051712 ARCHED GUARD 1 1
4 07051733 SCREEN HOLDER 1 1
5 07051724 SPARK SCREEN 1 1
6 07051711 GRINDING SUPPORT 1 1
7 07051710 SPACER PLATE 1 1
8 07051705 SHAFT M20x1,5-45 1 1
9 07051704 SUPPORT FLANGE D88 1 1
10 07051703 BEARING FLANGE D88 1 1
11 85076660 LOCKING NUT DIN439-B M20x1,5 1 1
12 85004093 ALLEN SCREW M6x16 8.8 SSi 4 4
13 85011457 WASHER, wide 6,4x15-1,5 SSi 6 6
14 85009056 NUT M6 Nyloc 4 4
15 85004091 ALLEN SCREW M6x10 8.8 SSi 9 (12) 9 (12)
16 85004190 ALLEN SCREW M12x70 8.8 SSi 1 1
17 85009060 NUT M12 Nyloc 1 1
18 07001767 RETURN PIPE ASSEMBLY D15x173x10 1 1
19 11001010 FLANGED FITTING 15 1 1
20 07031474 RPM VALVE BLOCK ASSEMBLY D3007 1 1
21 85000626 HEX SCREW M8x30 8.8 SSi 4 4
22 85011260 WASHER 8,4x17-1,6 4 4
23 85009058 NUT M8 Nyloc 4 4
24 17027050 HF PLUG R3/8 4 4
25 91081730 NAMEPLATE HHK200-12 1

NAMEPLATE HHK200-17 1
29 85004092 ALLEN SCREW M6x12 8.8 SSi 2 2
50 07001144 RPM CARTRIDGE 12 lpm 1

RPM CARTRIDGE 17 lpm 1
51 07001468-4,0L HYDRAULIC MOTOR 4.0 1

07001468-5,5L HYDRAULIC MOTOR 5.5 1

51.2 21048505 SHAFT SEAL, COMPLETE 17x30 1 1

LOCKING RING 30 1 1

55 SECURITY INSERT 12 MM OPTIONAL 1 1
56 SECURITY INSERT 8 MM OPTIONAL 1 1
60 ALLEN SCREW M6x20 8.8 SSi 3 3

ASSEMBLY

Wide range of standard hydraulic fluids can be used with the DYNASET hydraulic equipment.
Subject to the operating temperature, following mineral hydraulic oils are recommended:

ISO VG 32 for oils operation temperature up to 70 °C;
ISO VG 46 for oils operation temperature up to 80 °C;

ISO VG 68 for oils operation temperature up to 90 °C.
Synthetic and bio-oils can be used as well if their viscosity characteristics and lubricating efficiency are corresponding
to above mineral oils. Automatic transmission fluids and even engine oils can be used, provided that they are
allowed to be used in hydraulic system of your carrier machine.
Prior to use special hydraulic fluids a with DYNASET equipment, please be kindly requested to contact nearest
DYNASET representative for an advice.

HYDRAULIC FLUIDS

Hydraulic bench grinder is only allowed to be used when securely fixed onto robust base.
The grindstone's rotation speed is 3000 rpm. Never start the unit without protective cover !
Grinding support should be properly adjusted and fixed prior to starting the grinder. The spark screen must be
used as well to keep operators eyes uninjured.

TO AVOID INJURIES, WHICH MIGHT BE CAUSED BY GRINDING DUST AND SPARKS, ALWAYS WEAR
PROTECTIVE CLOTHING, GLOVES AND GOGGLES !

Never wear loose clothing that can get entangled in the working equipment.
The tightness of lids and covers as well as of all screw joints must be inspected on a regular basis, for instance
at least once a week or more frequently, if a grinder is exposed to a noticeable vibration.

The hydraulic system of a carrier machine may be pressurised up to 420 bar. Strictly follow all your local safety
instructions related to the high pressure hydraulics.
Operators and maintenance personnel must always comply with local safety regulations and precautions in order
to close out the possibility of damages and accidents.

TECHNICAL CONDITION OF YOUR MACHINERY AND EQUIPMENT MUST BE SUBJECTED TO CONSTANT
SURVEILLANCE. Hydraulic system of a carrier machine should be maintained according to the service program.
All couplings, valves and hoses of the system should be leak-proof and kept clean in order to follow their technical
condition.
Hydraulic leakages must be rectified immediately to avoid injuries caused by hot oil blowouts.

Prior to maintenance, detaching from a carrier or disassembling a DYNASET-unit, the hydraulic system of a
machine should be stopped and DYNASETs hydraulic circuit depressurised.

When working with DYNASET hydraulic equipment, appropriate protective clothing, safety goggles and gloves
should be worn. Do not touch parts heated by hydraulic oil.

WHEN CARRYING OUT ANY SERVICE DISASSEMBLING OR REPAIR OF DYNASET HYDRAULIC UNIT
(AND/OR HYDRAULIC SYSTEM OF A CARRIER MACHINE), ABSOLUTE CLEANLINESS MUST BE MAINTAINED
TO ENSURE RELIABLE AND TROUBLE-FREE OPERATION OF YOUR EQUIPMENT.

Having carried out a maintenance or cleaning, NEVER LEAVE UNITs COVERS /SHIELDS/SCREENS UNREPLACED
AND UNSECURED ! Condition of any seal/gasket must be inspected and defective parts replaced.

All installation and service of hydraulic equipment must be performed by qualified and experienced personnel
only.

2008

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HYDRAULIC BENCH GRINDER

SAFETY

MANUFACTURERS LIMITED WARRANTY

1. Warranty coverage

All hydraulic accessories manufactured by
DYNASET OY are subject to the terms and
conditions of this limited warranty. Products are
warranted to the original purchaser to be free from
defects in materials or workmanship. Exclusions
from warranty are explained in item 8.

2. Beginning of warranty period

Warranty period begins from the delivery date of
the product. Delivery is considered to be done on
the date when installation has been accomplished
or purchaser has taken the product in use. Product
is considered as taken in use at the date when
DYNASET OY has delivered the product to
purchaser, unless separately agreed otherwise
by written agreement.

3. Warranty period

Warranty period is twelve (12) months based on
maximum of 2000 hours usage during this time
period. In cases where the system is provided
complete with certain special components (e.g.
drive unit), those components are considered as
a subject to their manufacturers warranty.

4. Warranty procedures

Immediately upon identifying a problem which
purchaser believes to be a failure subject to the
products limited warranty, purchaser must contact
primary to the seller of the product. Contact must
be made as soon as possible, latest thirty (30)
days after the problem was identified. Seller and/or
manufacturer technical staff determines the nature
of the problem primarily by phone or e-mail.
Purchaser commits to give necessary information
and to perform routine diagnostic procedures in
order to determine the nature of the problem and
necessary procedures.

5. Warranty repairs

If the product is found to be defective during the
warranty period, DYNASET OY will, at its option,
either repair the product, author it to be repaired
at its authorized workshop or exchange the
defective product. If the product must be repaired
elsewhere than premises of DYNASET OY or
authorized workshop, all costs excluded from this
warranty (traveling and waiting hours, daily
allowance, traveling expenses and
uninstallation/reinstallation costs) will be charged
from the purchaser.

If the problem is not covered by this limited
warranty, DYNASET OY has the right to charge
purchaser of troubleshooting and repairing.

6. Delivery terms of warranty repair

If the product is found possible to be defective
under this limited warranty and it needs to be
repaired, DYNASET OY gives Warranty Return
Number (WRN). Items being returned must be
shipped, at the purchasers cost, adequately
packed for shipment, to the DYNASET OY or to
other location authored by DYNASET OY.
Shipment documents must contain:

- Purchasers name and contact information

- Receipt of original purchase

- WRN code

- Problem description

7. Warranty of repaired product

Warranty period of the product repaired under this
limited warranty continues to the end of original
warranty period.

8. Exclusions from warranty

This warranty shall not apply to:

a. Failures due to normal wear and tear, improper
installation, misuse, abuse, negligence, purchaser
selection of improper product to intended use, accident,
improper filtration of hydraulic oil or intake water or
lack of maintenance

b. Cost of maintenance, adjustments, installation
or startup

c. Coating, hydraulic oil, quick couplings and
interconnection hoses (internal or external to system
assemblies)

d. Products altered or modified in a manner not
authorized by DYNASET OY in writing

e. Products which have been repaired during
warranty period by others than DYNASET OY or its
authorized workshop

f. Costs of any other damage or loss, whether
direct, indirect, incidental, special or consequential,
arising out of the use of, or the inability to use, the
product

g. Telephone or other communications expense
h. Product that is used in exceptional conditions,
considered to cause excessive wear and tear

i. Faults caused by nature phenomenons like
flood, thunder, etc.

© DYNASET OY, all rights reserved

2008

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HYDRAULIC BENCH GRINDER

EC DECLARATION OF CONFORMITY

We hereby declare that the below-reference product design, structure and our
manufacture form fulfills relevant, fundamental safety and health requirements
with the provisions in the Council Directive on mutual approximation of laws of the
Member States on the safety of machines.

- Machine directive 2006/42/EC

- Directive 97/23/EC European standards Pressure equipment.

Apply conformity standards:

- EN ISO 4413: EN ISO 4413:2010 Hydraulic fluid power - General rules and safety
requirements for systems and their components.

If device has changed by someone other than at the hands of manufacturer or his
permission, this declaration is not valid.

PRODUCT: HYDRAULIC BENCH GRINDER

ALL TYPE NUMBERS: HHKxxxxxxx-xxxxxxxx-xxxxxx-xxxxxx-xxxx

YLÖJÄRVI 15.10.2012

DYNASET Oy

Timo Nieminen
R&D Manager

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HYDRAULIC BENCH GRINDER