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Please Note
1 All specifications and recommendations are given to the best of our knowledge and ability.
No liability is accepted for their application.
2 Specifications (by dimensions, description, illustration or otherwise) are approximate and are
liable to change without notice especially with regard to developments and improvements.
3 Since load capacity ratings are only general recommendations they can be subject to wide
variations under different working conditions.
4 Listing of goods does not necessarily imply that they are ‘Ex stock’ nor do we accept any
obligation to supply them
.
Castor Selection Advice
Use this guide to help identify the right castor or wheel for your requirements...
Castor Fitting Options
Bolt Hole
What mode of fitting will suit your application best?
Weight Loading Considerations
To be sure that the load capacity of individual castors will safely handle the total weight of equipment to
be carried, use the following method to determine your requirements.
On equipment to be fitted with 4 castors take the total weight of the equipment plus the weight of the
trolley / mount and divide by 3. This will build in a safety factor to allow for variable operating conditions
or uneven surfaces.
Load +Weight of Transport Equipment
Load Capacity of Castor = -------------------------------------------
3
Choosing the rightWheel
Hard Tread
Resilient Tread
In general terms the larger the wheel, the easier the equipment is to push or pull and overcome small obstructions. Bearings in wheels will also
assist with ease of movement. Wheels can be divided into two basic types:
Bearings
P
LAIN BEARINGS
will be suitable for lighter loads and
where intermittent movement is required.
R
OLLER BEARINGS
are available on certain sizes
to reduce the effort needed to move quite heavy loads.
B
ALL
J
OURNAL BEARINGS
offer low friction and long working
life. An essential for constant moving applications and all
but the heaviest power towing uses.
T
APERED ROLLER BEARINGS
good performance for high load
capacities, adjustable play, ideal for power towing.
These are the easiest to push and in many cases will be the first choice
for ease of movement.
N
YLON WHEELS
are the most popular choice as they will
not damage solid compacted floors such as cement or tile
and have good load capacity.
C
AST
I
RON WHEELS
combine strength and shock resistance
with long life and economy. They will withstand extremes of
temperature but may cause floor wear and can be noisy.
P
OLYURETHANE WHEELS
have good load carrying
characteristics. High tear strength and abrasion resistance
give these wheels a life of up to 10 times that of rubber.
R
UBBER TYRED WHEELS
are available in a wide range of sizes
and load capacities with a choice of Nylon, Plastic, Cast Iron,
Aluminium and Pressed Metal centres. Non-marking tyre
options can be offered. Suitable for most floors.
These are kinder to flooring, although may need more effort to move.
Top Plate
Expander
Usually a rectangular or square plate
with 4 fixing holes.
A single bolt hole bracket prefitted
with an adjustable expander to suit
round or square tubing.
A single central bolt hole fixing
Sales andTechnical Support
Midlands
t.
0121 772 1010
f.
0121 773 1103
e.
sales
@
keystonecastors.com
North
t.
0161 865 3800
f.
0161 865 3400
e.
manchester
@
keystonecastors.com
Special Applications
We can offer Castor ranges to suit specialist applications such as
High and Low Temperatures, Low level castors, Stainless steel,
Jacking or Gate Castors plus we offer a Re-tyring service.