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However, after people invented the wheel, moving and moving object is a lot easier, but can only be run on a straight line, wheel for moving heavy objects to the direction of the change is still very difficult, then people invented with a steering wheel structure, that is what we call castor or universal wheel.
Castor appeared to people carrying brought epoch-making revolution especially the moving object, not only can easily carry, can also with any direction, greatly improving the efficiency.
Users of wheeled equipment responsible for proper maintenance and operation.
To avoid improper use or overload, goods heavy to light on the cart.
Rough pavement of high speed or heavy pressure wheels will cause the wheels or equipment damage.
Supports and fasteners: the loose wheel shaft and the nut tightening and check weld or support plate for damage.
Overload or crash will lead to distortion.
Stent deflects the overloaded pressure distortion on individual round wheels and cause premature failure.
If it is lever type caster, should be to tighten the nut or solid rivet and ensure equipment mounting bracket without bending and pole installed correctly.
Installing a caster wheel, lock nut or locking washers should be used.
Expansion plug pole of castor installation to ensure that the plug rod firmly installed in a casing.
Castor also is what we call the universal wheel, its structure is allowed to rotate 360 degrees;
Fixed castor no rotational structure, can't turn.
Usually two casters are generally use collocation, such as the structure of the trolley is in front of two fixed wheel, behind near the armrest is driven by two wheels.
Castor castor has a variety of materials, such as cast iron wheel, nylon wheel, etc.
Castor: if the activity is too loose, should be replaced immediately.
Such as castor central rivet nut is fixed, shall ensure that its locked firmly.
Such as activity can't free rotation, should check the ball in the presence of corrosion or dirt.
If there is a fixed type caster wheel assembly, shall ensure that no bending wheel caster stents: visual check the abrasion of the wheels.
The wheel rotational impeded associated with fine impurities such as red, the rope.
Anti-wind can cover Yin in the clutter.
Castor too loose or too tight is also another factor, to replace the damaged/castor wheels to avoid the unstable rotation.
Inspect and replace the wheel after, shall ensure that use lock washers and nut tightening wheel axle.
Because of loose axle can lead to friction wheel with stents and jammed.
Replace the wheels and bearings should be to avoid the loss.
Lubrication: castor should add lubricating oil regularly, wheels and bearing can use for a long time.
Put grease on shaft, sealing ring and roller bearing friction parts, can reduce friction and make more flexible rotation.
Under normal circumstances once every six months for lubrication.
The car in a month after cleaning for wheel lubrication.