Institutional Range
310 Series
Size: 50mm, 75mm & 100mm
Light duty pressed steel swivel castors with 10mm bolt holes.
Can be fitted with grey non-marking Rubber Tyred or Black Polypropylene wheels.
Suitable for a wide range of light duty applications.
Castor Reference and Load Capacity
Wheel
Tread
Plated
Castor
Swivel
Swivel Race
Bolt
Grey
Black
Diameter
Width
Finish
Height
Radius
Diameter
Diameter
Rubber
Polypropylene
2”
22mm
Zinc
73mm
45mm
41mm
*10mm
50-310-R
50-310-P
50mm
60kg
65kg
3”
**23mm
Zinc
101mm
68mm
41mm
*10mm
75-310-R
75-310-P
75mm
70kg
75kg
4”
**26mm
Zinc
124mm
75mm
41mm
*10mm
100-310-R
100-310-P
100mm
80kg
85kg
An alternative 100mm and 125mm castor is available in a chrome plated finish. Details on request.
* Bolt hole fitting requires a 20mm washer and a 10mm bolt.
** The 3” and 4” Polypropylene wheels have 22mm tread widths.
OPTIONAL EXTRAS
Round Expanding Tubular Adaptor
Square Expanding Tubular Adaptor
Combined Swivel and
Wheel Brake (all sizes)
Expanding adaptors available for round tubing in
Expanding adaptors available for square tubing
Simultaneously brakes both the
the following sizes:
in the following sizes:
swivel head and wheel. Release is
Overall height of castors increased by 3mm.
Overall height of castors increased by 3mm.
affected by the trip pedal. To order
add suffix ‘ SWB ’ to castor reference.
To order add suffix detailed in table to swivel
To order add suffix detailed in table to swivel
castor references.
castor references.
Swivel Radius
The swivel radius is increased when
Expander
Expander
brakes are fitted.
Range
Ref.
Range
Ref.
50mm wheels: increased by 40mm
18 - 19.5mm
R-18
20 - 22mm
S-20
75mm wheels: increased by 32mm
100mm wheels: increased by 25mm
19.5 - 21.7mm
R-20
22 - 25mm
S-22
21.7 - 24.5mm
R-22
25 - 28mm
S-25
24.5 - 27mm
R-25
29 - 32mm
S-29
27 - 29.5mm
R-27
36 - 38mm
S-36
29.5 - 32mm
R-30
8