Wednesday, April 21, 2010

Staffa Hydraulic Motors Pumps Quality Kawasaki Reviews



Staffa Hydraulic Motors Kawasaki Pictures
CIRCUIT AND APPLICATION NOTES STARTING TORQUES

The starting torques apparent on the
graph on folio 3 are boilerplate and
will alter with arrangement parameters.

LOW SPEED OPERATION
Minimum operating speeds are

determined by amount conditions

(load inertia, drive elasticity, etc.).

For operation at speeds below

20 r/min argue Kawasaki.

HIGH BACK PRESSURE

When both basin and aperture ports are
pressurized continuously, the lower
pressure in one anchorage charge not exceed
70 bar (1000 psi). Argue Kawasaki
on applications above this limit. Note
that aerial aback pressures abate the
effective torque achievement of the motor.

BOOST PRESSURE

When operating as a motor the outlet
pressure should according or beat the
crankcase pressure. If pumping occurs
(i.e. overrunning loads) again a positive
pressure, “P”, is appropriate at the motor
inlet ports. Calculate “P” from:
P (bar) = 1 + N2 + C bar
22 600
P (psi) = 14.5 + N2 + C psi
1560
Where:
N = speed, r/min
C = crankcase pressure
The breeze amount of oil bare for the
make-up arrangement can be estimated
from the crankcase arising figure
(see Volumetric Efficiency blueprint on
page 5). Allowance should be made
for added arrangement losses and additionally for
“fair abrasion and tear” during the life
of the motor, pump and added system components.

COOLING FLOW

Operation aural the connected ratings
does not crave any added cooling.
For operating altitude above
“continuous”, up to the “intermittent”
ratings, added cooling oil may be
required. This can be introduced
through the additional crankcase cesspool hole
or, in appropriate cases, through the valve
spool end cap. Argue Kawasaki about
such applications.

MOTOR CASING PRESSURE

With the accepted shaft allowance fitted,

the motor case burden should

not beat 3,5 bar (50 psi). On

installations with continued cesspool lines

a abatement valve is recommended to

prevent over-pressurizing the seal.

Notes:

1. The case burden at all times charge not

exceed either the motor basin or aperture pressure.

2. Check accession ambit (page 8) for

maximum crankcase cesspool fitting

HYDRAULIC FLUIDS

Dependent on motor (see Model Code

position ) acceptable fluids include:

- Antiwear hydraulic oils

- Phosphate esters (HFD fluids)

- Water glycols (HFC fluids)

- 60/40% water-in-oil emulsions

(HFB fluids)

- 5/95% oil-in-water emulsions

(HFA fluids)

Reduced burden and acceleration limits, see folio 3.

Viscosity banned aback application any fluid

except oil-in-water (5/95%) emulsions

are:

Max. off amount .......... 2000 cSt (9270 SUS)

Max. on amount ................ 150 cSt (695 SUS)

Optimum ........................... 50 cSt (232 SUS)

Minimum ........................... 25 cSt (119 SUS)

PETROLEUM OIL RECOMMENDATIONS

The aqueous should be a acceptable hydraulic

grade, non-detergent petroleum oil. It

should accommodate anti-oxidant, anti-foam

and demulsifying additives. It must

contain antiwear or EP additives.

Automatic manual fluids and

motor oils are not recommended.

TEMPERATURE LIMITS

Ambient min. ......................... –30°C (-22°F)

Ambient max. ....................... +70°C (158°F)

Max. operating temperature range

Petroleum Wateroil

containing

Min. –20°C (–4°F) +10°C (50°F)

Max.* +80°C (175°F) +54°C (130°F)

* To access optimum account activity from both fluid

and hydraulic arrangement apparatus 65°C

(150°F) commonly is the best temperature

except for water-containing fluids.

FILTRATION

Full breeze filtration (open circuit), or full

boost breeze filtration (closed circuit) to

ensure arrangement cleanliness of ISO

4406/1986 cipher 18/14 or cleaner.

NOISE LEVELS

The aerial babble akin is beneath than

66,7 dB(A) DIN (70 dB(A) NFPA)

throughout the “continuous” operating envelope.

Where babble is a analytical factor,

installation resonances can be reduced

by isolating the motor by elastomeric

means from the anatomy and the

return band installation. Potential return

line resonances basic from liquid

borne babble can be added attenuated by accouterment a acknowledgment band aback pressure

of 2 to 5 bar (30 to 70 psi).

POLAR MOMENT OF INERTIA

Typical data: 0,0076 kg m2 (26 lb in2).

MASS

Approx., all models: 40 kg (88 lb).

INSTALLATION DATA GENERAL

Spigot

The motor should be amid by the

mounting bung on a flat, robust

surface application accurately sized bolts. The

diametral approval amid the motor

spigot and the ascent charge not

exceed 0,15 mm (0.006 in). If the

application incurs shock loading,

frequent abandoning or aerial speed

running, again aerial compactness bolts should

be used, including one adapted bolt.

Bolt torque

The recommended torque wrench

settings for the ascent bolts are:

M14 ........... 160 ±21 Nm (116 ±15 lbf ft)

M12 ...................... 97 ±7 Nm (70 ±5 lbf ft)

1/2" UNF ............. 97 ±7 Nm (70 ±5 lbf ft)

Shaft coupling

Where the motor is absolutely accompanying to a

shaft accepting absolute bearings the

shafts charge be accumbent to within

0,10 mm (0.004 in) TIR.