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Caster wheel for rotary axle
Wheel contact
point
Caster length
Figure 88: Caster length
When fitting the product with angle-
adjustable caster-wheel bearing blocks,
the caster length can be increased. The
caster length is the distance between the
rotary axle of the caster wheel fork
projected onto the floor and the wheel
contact point. The wheel contact point of
the caster wheel trails behind the rotary
axle as it were. The caster length has a
stabilizing effect on moving in a straight
line. Increasing the caster length can be
attained by mounting the caster wheel in a
different wheel position on the caster
wheel fork (the in doing so, the front seat
height or the angel of the seat changes,
see chapter 18). Another possibility is to
bend the caster wheel axle (see
chapter 23.4) forwards in the direction of
travel in the lower area. The angle of the
caster wheel axle can be adjusted up to
approximately 4 mm over the length of the
caster wheel bearing block out of the
35
Operating instructions SPEEDY F4 & F2
vertical. This increases the caster length
and the tendency to vibrate reduces.
Caster wheel for rotary axle tilted
maximum in the direction of travel
Max.
4 mm
Wheel contact
point
Increased caster length
Figure 89: Increased caster length via the inclination
of the caster wheel axle
23.3 Replacing the caster wheel forks
A distinction needs to be made between the
caster wheel forks with a screwed axle and
those with a quick-release axle.
In addition, the replacement of the caster
wheel forks with screw-on axles differs from
the angle-adjustable caster-wheel bearing
blocks and welded caster-wheel bearing
blocks.
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