 A
new 600mm diameter glass reinforced nylon five star spider
base with tapered steel spindle bush.Manufactured at our factory
in Germiston - a 600mm dia. glass reinforced nylon base. This
is available with our new castor - the 50mm dia. Apollo Executive
model A tapered steel reinforcing ring is moulded into the
center to ensure that the spindle remains in position and
does not creep Sturdy ribs are incorporated into the design
to ensure that with the glass filled material used minimum
flexing occours.
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no load applied and spindle
inserted
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Under full load - 650kg. Our
base is measured for deflection and spindle movement.
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Testing of our bases is done at our premises in Elandsfontein
this ensures that our products meet with the highest international
standards.
Castors are tested by an independent international manufacturer
of heavy duty industrial castors
The complete unit - base and castors is tested by the South
African Bureau of Standards to SABS 1528-1 " Test for castors
& five star base", with the relevant report available
for inspection.
In the picture on the left the Chatton 600mm dia base is shown
with no load applied.
In the picture on the right a load of 650kg is applied. |
| 5
Star Chair Base - 600mm Diameter  Manufactured
from Glass filled Nylon this 660mm diameter five star office
chair base is designed for the most rugged conditions.
A steel reinforcing ring is moulded inside the tapered 50mm
diameter orifice to prevent spindle "creep" as well
as giving the base extra strength.
The castors are our Venus 50mm Twin Wheel Executive castors
with a push - in 10mm dia.pin.
An identical base and castors has been tested by the SABS
to eight times more than the required standard. The relevant
report is available on request.
These along with all our products, are made at our factory
in Elandsfontein, Germiston.
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| Testing
for deflection, spindle creep and failure. |
 |
 |
The base to be tested is placed
on the test rig supported by levellers inserted into the castor
pivot holes
A steel mandrell made to the same dimensions as a spindle is
inserted in the centre hole and the distance of penetration
measured. The distance from the bottom of the base to the base
of the test rig is measured See pic "A". Hydraulic
pressure is applied and measurements taken at various points
Our bases are tested to a pressure of 2500 kPa which is equal
to 650 kg.
The deflection at this point can be seen in pic "B"
This test when compared to those conducted on "imported
bases" equals and in some cases even surpasses them giving
us confidence that our product is sure to give trouble free
service throughout the life of the chair. |
