Choosing_castors_wheel_first

Choosing a Castor- Choose the Wheel First


	When choosing a castor, choose the wheel first from usage needs.

1 General Category	2 Typical use	Series	Capacities up to Kg	Wheel diameters available
Domestic Institutional	Domestic, office furniture, chairs, light ward equipment	Twin	80	40,50,75
Domestic Institutional	Light cabinets, tool boxes, racks	L	40	50
General Institutional	Lighter display racks, office document trolleys, lighter institutional use, etc.	E	40	40,50,75,100,125
	Lighter hospital furniture/beds, display racks, audio visual equipment, bread trolleys, etc.	K	75	65,75,100
	Standard hospital & laboratory equipment, supermarket trolleys, laundry carts, etc.	M	90	100,125
	M Deluxe, Display, Shopfitting, Furniture	MD	90	100,125
	Premium hospital/laboratory equipment needing reliable performance & low maintenance	Q	90	125,175,200
Lighter industrial	Lighter transit trolleys, display and bakehouse racks, small factory trolleys.	D	100	75,100,125
	Heavier transit trolleys, and heavily used lighter trolleys. Tougher than D series.	J	230	100,125
	Heavier mobile racks, jigs, heavier display equipment. A tough castor.	O	350	100,125
	Heavier food carts, factory or outdoor equipment. Limit of hand pushing.	Y	600	220,265,400
	Larger, lighter trolleys, rougher or softer ground. Slow tow on most.	H	450	150,200
Heavier industrial	Industrial trolleys, rougher usage, good for impact, hand pushed.	T	600	150,200
	Heavier industrial, with impact.	X	1000	150,200
	Very heavy cargo trucks, very heavy maintenance platforms. Usually towed.	V	1200	200,250

Remember: The bigger the wheel diameter, the easier it will roll over bumps

3 Tyre properties (not all types are available in all series)	Resilience (ride) rating	Floor protection		Push effort		Typical floor surface used on	4 Bearing properties (not all types are available in all series)
	Resilience (ride) rating	damage	marking	smooth	rough	Typical floor surface used on
RUBBER R black standard	good	good	poor	good	good	industrial areas concrete floors	PLAIN A plain inserted improved rolling H plain hi-temp in high temp wheels I plain cast iron for highest impact N plain nylon, works well in wet on S/S axle bushing P plain polypropylene - lowest cost T plain Teflon BALL B unground, easiest rolling at low cost Q precision ground lubricated and sealed ROLLER R low cost for rough conditions S stainless steel version of roller bearing
S grey flat non-marking	V good	V good	V good	good	good	institutional areas soft surfaces
T grey round non-marking	V good	V good	V good	good	good	institutional areas carpets
B blue hi-res	excellent	excellent	excellent	good	V good	rougher surfaces quiet areas
J thermoplastic TPR	fair	good	good	good	fair	vinyl tiles smooth concrete
O rubber on CI	good	good	good	good	good	outdoor concrete sealed concrete
URETHANE U solid on nylon or cast iron	fair	V good	V good	good	fair	all surfaces for floor protection rough concrete towed outdoor
URETHANE M solid on aluminum
URETHANE A solid Anti-Static						non-marking to anti-static level
F foamed	excellent	excellent	excellent	V good	V good	all outdoor or indoor areas
NYLON N nylon	poor	good	good	good	poor	smooth concrete smooth indoors
H hi-temp resin	poor	good	good	good	poor	concrete or steel oven floor
PHENOLIC K hi-temp phenolic	poor	good	good	good	poor	concrete or steel oven floor
POLYPROPYLENE P polypropylene	poor	good	good	good	poor	carpet or vinyl indoor areas
P.V.C. V P.V.C.	fair	fair	good	fair	poor	concrete floor indoors
CAST IRON C cast iron	V poor	poor	poor	good	poor	high temp ovens and dirt floors


...then after you have chosen the wheel choose the fork for your mounting needs, and choose the attachments for function needs - see appropriate Series page.